What is overhead rail shot blasting machine 1

What Is Overhead Rail Shot Blasting Machine

The overhead rail shot blasting machine, also known as continuous hanging shot blasting machine, which uses a suspension chain as a workpiece carrying device. On Aug 14th 2021, QGMA GROUP successfully accepted an overhead rail shot blasting machine after the installation at the customer site in China. Let me give a detailed introduction to this equipment.

What is overhead rail shot blasting machine 2

The overhead rail shot blasting machine is a single-stroke rial continuous shot blasting equipment. It has the functions of static loading and unloading of workpieces, automatic and rapid conveying and positioning, and self-rotate and shot blasting of workpieces. The overhead rail shot blasting machine adopts conventional electrical control, and the conveying track of the workpiece adopts stepless speed regulation. It is suitable for all-round shot blasting cleaning of large quantities, cast steel, cast iron, and welded parts, and can be used for various types of hanging workpieces.

What is overhead rail shot blasting machine 3

The suspension chain can work continuously, and the weight capacity of the hooks is mostly 300 kg and 500 kg. When start the working of the shot blasting process, the workers hang a large number of workpieces onto the special tooling, then use a forklift to hang the tooling full of workpieces on the hook of the machine suspension chain.

The hooks enter the shot blasting chamber in turn for shot blasting. There is a rotation device on the top of the shot blasting chamber body of the shot blasting machine, so that the hooks that full of workpieces can rotate in the shot blasting chamber body during the shot blasting process, and clean up in all directions without dead angles. There are a number of hooks reserved outside the shot blasting chamber, which can be used to load and unload workpieces during shot blasting to improve productivity.

After the workpiece is processed, move out of the shot blasting chamber with the hooks. The next set of hooks hang the workpiece into the shot blasting chamber for processing. This type of shot blasting machine works continuously and is suitable for mass processing of all kinds of easily suspended workpieces. Such as engine cylinder heads, motor housings, gears, motorcycle engine housings, locomotive hook and tail frame components, bogie components, hardware tool housings, water pumps, etc.

The cleaning effect is particularly good. It is an ideal choice for industries such as automobiles, tractors, diesel engines, motors, valves, etc. Generally, it can be customized according to your requirements. This type of shot blasting machine adopts the suspension chain as the carrying device, so it can be used in line with the die-casting department, cleaning department, finishing department, inspection department and spraying department, etc.

Through shot blasting, not only can the rust on the surface of the workpiece be removed, the welding slag on the structural parts can be cleaned, but also the welding stress of the workpiece can be eliminated, the fatigue strength of the workpiece can be improved, and the paint film adhesion of the workpiece can be increased. The purpose of improving the surface and internal quality of the entire workpiece. It is widely used in metallurgy, petroleum, chemical, machinery and other industries.

QGMA GROUP designed a three-station step type overhead rail shot blasting machine for customers, which is mainly composed of shot blasting chamber, pneumatic opening and closing door, wheel blast turbine assembly, abrasive reclaim system, catenary conveyor (without Stage speed regulation), workpiece rotation mechanism (stepless speed regulation), dust collector system and electric control system with Omron PLC.

The blasting chamber of overhead rail shot blasting machine

What is overhead rail shot blasting machine 3The side wall of the shot blasting chamber is designed with 6 high efficiency wheel blast turbine assembly, divided into 3 stations, each station has two blasting turbines, to ensure that the cleaned workpieces are fully shot blasted. ZGMn13 wear-resistant protective plates are used for the protective plates lining inside the chamber.

The layout of the blasting turbine is dynamically simulated by the computer, and all the angles and positions of the layout are determined by the computer design. On the basis of taking care of all the workpieces that need to be cleaned, the empty throw of projectiles is minimized, thereby maximizing the utilization rate of projectiles and reducing the wear of the protective plate in the shot blasting chamber.

The hook walking through at the top of the cleaning chamber adopts a guard plate, a multi-layer anti-wear rubber plate, and the bottom layer is sealed with an impact-resistant polyurethane plate. The rubber plate on the top forms a labyrinth seal with an exquisite structure to prevent the abrasive from rebounding to the outside of the chamber. At the same time, the moving part of the catenary hook on the top of the chamber is sealed by a movable sealing plate.

At the same time, the inlet and outlet of the shot blasting chamber are sealed with wear-resistant rubber plates with elastic clamps. We also install ZGMn13 wear-resistant guard plates at the entrances and exits on both sides of the shot blasting chamber to extend the service life.

Wheel blast turbine assembly

What is overhead rail shot blasting machine 5

The wheel blast turbine assembly is composed of blast turbine, blades, abrasive distributor, control cage, side guard plate, end guard plate, top guard plate, impeller, motor, etc. This machine has 6 sets of blast turbine, with special blasting wheel structure, shot blasting specific energy can reach 250 kg/min. The blades can fast installation and disassembly; Using single disc impeller, which with good stability, concentrated shot blasting area and uniform shot blast turbine. The blades, abrasive distributor and control cage in this shot blasting machine are made of high chromium wear-resistant materials and made by a special heat treatment process, so that the weight difference of the blades is controlled within 5 grams, which greatly reduces the operating time of the shot blasting machine. Noise extends the life of wearing parts.

We also Install a limit device on the wheel blast turbine: when opening the top cover of the shot blasting machine for maintenance, ensure that the equipment cannot be started, thereby protecting the safety of maintenance personnel.

Abrasive circulating system

What is overhead rail shot blasting machine 6

During the blast process, dust, broken abrasive and other solid particles or contaminants (fines) are generated by the rust and scale removed from the workpieces. The fines are separated in the abrasive reclamation unit which is individually adjustable to the different types and sizes of abrasive.

The Abrasive reclamation unit consists of an impact separator and a cartridge filter. The impact separator removes the fines from the abrasive and serves as a certified spark extinguisher and meets all ATEX regulations.

The cartridge filter provides the necessary negative pressure to remove dust. lt can be installed separately beside the shot blast machine. The filter is automatically cleansed by compressed air pulses which are adjustable in intensity and duration. All elements of the filter unit are free from ignition sources.

Alternatively, wet filter units can be used for the necessary dust removal. This is often applied in aluminum die casting.

Abrasive circulating system can be divided into circulating system and abrasive separation system, which is composed of screw conveyor, abrasive guide pipe, bucket elevator, air wash separator, pneumatic shot gate valve, etc.

① Screw conveyor

The screw conveyor is composed of a cycloid reducer, a screw shaft (the screw blade is made of 16Mn material), a conveying cover, and a bearing with a seat. Our company has realized serialization of this component, high versatility, interchangeability, stable and reliable performance. The whole screw shaft is processed as a whole after welding, thus ensuring the coaxiality of the two ends of the screw shaft and improving the stability of operation.

② Bucket elevator

The bucket elevator consists of a cycloid reducer, upper and lower belt pulley, conveyor belts, bucket, closed barrels and tensioning devices. In order to ensure that the conveyor belt does not slip during work, the belt pulley is made into a squirrel cage type, which not only improves the friction between the lifting tape and the pulley, avoids the slipping phenomenon of the old-fashioned light pulley, but also reduces the pre-tightening force of the lifting belt.

Extend the service life of the lifting tape. At the same time, the hoist is equipped with a set of tensioning device. When the belt is loose, the belt can be tightened by adjusting the adjustment bolts on both sides of the upper part of the hoist. The lower shaft of the hoist is equipped with a pulse wheel, which can detect and track the working status of the hoist. Once the bucket elevator does not rotate or slips, the signal can be fed back to the PLC for processing in time to ensure the safe operation of the equipment.

③Air wash separator

This machine adopts advanced full curtain separator. This machine adopts advanced full curtain separator. The separator is mainly composed of a separating and conveying screw, an abrasive silo in the sorting area, and so on. Adjusting the seam between the vertical and horizontal adjustment baffles of the separator can improve the height and trajectory of the cloth layer. With the adjustment of the adjustment baffle of the separation zone, that can be obtained a good separation effect, and the separation efficiency can be as high as 99%.

Catenary conveyor

What is overhead rail shot blasting machine 7

① Catenary

Heavy-duty die-forged detachable chain, single hook load-bearing 700Kg.

②Drive device

The hoisting chain drive is a chain drive, and the required speed is obtained by the planetary reducer transmission device. The cleaning work piece hung on the anchor head hook is dragged by the drive sprocket through the chain and travels step by step along the hanging rail.

③Tightening device

It is used to compensate the manufacturing error of chain length and track length, which is beneficial to the installation of the chain and compensates the influence of the increase of the chain pitch due to wear during operation, so as to maintain the tension of the chain and eliminate the line The amount of tension that may be generated. The tensioning device of this machine relies on the gravity of the counterweight to roll the rollers on the frame of the trolley and drive the rollers to move to achieve the purpose of automatic tensioning.

Hook rotation device

What is overhead rail shot blasting machine 8

This machine with 3 station hooks shared to use the hook rotation device. The hook is stopped after entering the shot blasting chamber along the hanging rail. The cylinder drives the rotation mechanism to engage the chain with the sprocket on the hook. The hook rotation mechanism operates to drive the hook to rotate. In this way, it can not only reduce the wear of the chain, but also be suitable for the rotation and cleaning of the workpiece in the shot blasting zone.

Dust collector system

What is overhead rail shot blasting machine 7

We adopts 2-level dust collector: settling chamber and cartridge filters. Cleaning efficiency is up to 99.5%. The material of filter is from Donaldson, the effective filtration area of each filter is up to 15 ㎡. The air shock valve with timing device can clean filters regularly.

Since there is a layer of oil on the workpiece that the customer needs to clean, we add additional explosion-proof and pressure relief devices on the dust collector to ensure the safety of the dust removal system.

Electronic control system

What is overhead rail shot blasting machine 10

This machine is controlled by imported programmable controller (PLC); all other electrical components are made by domestic brand manufacturers. The whole system can be operated automatically or controlled manually.

It is equipped with a abrasive circulation system failure alarm function, and if one of the components of the system fails, the components above it will automatically stop running to prevent the abrasive from jamming.

The door of the shot blasting chamber is interlocked with the abrasive valve of the blast turbine. The door must be closed to open the abrasive valve, which not only improves the production efficiency but also prolongs the service life of the motor.

Each blast turbine is equipped with an ammeter, which can effectively reflect the working state of the shot blasting machine.

The abrasive circulation system of the entire equipment, including elevator, separators, screw conveyors, etc., uses automatic detection devices. When a certain part is not running smoothly or stuck, it can automatically alarm and notify the faulty part, so that the maintenance personnel can target maintenance.

what is shot blasting machine?

What Is Shot Blasting Machine?

Shot Blasting Machine is a surface preparation equipment that removes rust and oxide layer on the surface of the workpiece by steel shots or steel grits which thrown on the surface through high-speed rotating impellers. It is a machine for shot peening, cleaning metal parts such as forging, casting parts, steel surfaces, heavy metal structures, rusted metal parts, etc.

Shot blasting machines not only can clean off contaminants like dirt or oil, remove metal oxides like rust or mill scale, but also can remove deburr the surface to make it smooth. Which will not change the shape of the workpiece, will not reduce the strength of the workpiece. Meanwhile, shot blasting machine can prepare a metal surface before the painting or coatings process, enhances the adhesion of the paint film and the material surface, increases the lifespan and the endurance of coating.

shot blasting machine 12shot blasting machine 1

The origin of shot blasting machine

In order to prevent steel from being corroded, people have made unremitting efforts and come up with many effective methods. The earliest and most common application is the use of coatings to protect steel components from damage by external substances. The coatings that protect steel construction are divided into two categories: metal and non-metal.

There are two basic conditions for a strong bond between the coating and the steel component. First, the gap between the coating and the substrate should be as small as possible. According to the data, when the gap between the coating and the substrate surface is within 0.5nm, it can be firmly bonded. Second, there must be a large enough contact surface between the coating and the surface of the substrate, which means that there is no better way except to increase the surface roughness. A conclusion can be drawn from this, in order for the coating to effectively protect the steel components, it is necessary to treat the surface of the steel components. This can not only clear the impurities on the surface of the workpiece as thoroughly as possible, but also expose the substrate of the workpiece as thoroughly as possible; the second is to generate a certain degree of roughness on the surface of the workpiece, expand the surface area of the workpiece surface, and increase the bonding force between the unit area of the workpiece surface and the coating.

To achieve the purpose of appeal, among all treatment methods, abrasives are the most effective cleaning method as a cleaning medium. There are two cleaning methods using abrasives as the cleaning medium. One is the method in which compressed air (or high-pressure water) accelerates abrasive particles to a high speed to clean the surface of the workpiece, that is, shot peening. The other is to push abrasive particles with a high-speed rotating impeller, so that they can hit the surface of the workpiece at a relatively high speed, this is usually called shot blasting. It is a highly efficient cleaning method that appeared in the 1930s.

The world’s first shot blasting equipment was born 100 years ago. In the beginning, it was applied to various metal or non-metal surfaces to remove impurities, oxide scale, and increase roughness, etc. After a century of development, shot blasting equipment and technology have become quite mature, and its application is not only in heavy industry plants anymore. With the birth of the world’s first horizontally mobile shot blasting equipment in Blastrac in the United States, it was rapidly expanded to be applied to concrete surface coating treatment and ship deck metal surface treatment, and directly led to the industry’s standard formulation and construction method specifications.

Working principle of shot blasting machine

Shot blasting machine is composed of blasting turbines, blasting chamber, workpiece transfer system, abrasive recycling system, dust collector system, electric control system and others.

Blast Turbine

Blast turbines are the heart of shot blasting machine, as they represent one of the most important elements for its efficient operation. Blast wheels are made up of blades, control cage, distributor, impeller and guard plates. The abrasive enters distributor from silo by self-weight, then rotates in the blast turbines. The abrasive rotates to the window of the control cage, then thrown onto the workpiece along with the high-speed rotating blades.

How to choose different types of blades?

The blades have two kinds of types. The one is the same as its name, straight blades. The other one is the curve. If viewed from the side, the blades have a certain angle.

Compared with the same size of the straight blades, the biggest advantage of the curved blades is the higher grinding speed. So the energy shock transferred to the workpiece is greater.
The curved blade can achieve abrasive exit speed, 27% to 30% higher than the straight blade. It is mainly used in the following situations:
When more particle energy is required and distance is greater
The workpiece with higher requirements for roughness
Where scale needs to be removed
Under the same motor power, the straight blade can achieve a lower outlet speed but a higher mass flow rate. Therefore, the choice of the blade depends on the specific situation.

 

blast wheels

Abrasive Recycle System

Abrasive recycle system is composed of a screw conveyor, bucket elevator, separator and storage hopper.

Bucket elevator lower part feeding gate is connected with screw conveyor, its upper part discharging gate is connected with separator. So the abrasive from screw conveyor into the bucket elevator, then transported by the bucket elevator to the separator on the top, and then the cleaned abrasive get into the storage hopper to recycle, the residue will get out of the recycling system from the separator system.

The separator is the most important part of the blasting machine, that determines the steel shot recycling rate. After into the separator, the steel shot and contaminants are uniform distributed in the separation chamber, presenting a flowing curtain. At this time, the separator fan absorbs air through the exhaust opening and separates the contaminants and steel shot by using the principle of gravity winnowing.

recycle system for shot blasting machine

Dust Collector

In the shot blasting process of the shot blasting machine, the steel shot is projectile with a high speed, it will collide and friction with the workpiece. After passing through the recovery system, dust will be generated. The dust collector is to remove the dust in the blasting chamber and other devices to prevent air pollution.

The dust collector can be divided into three levels: coarse purification, medium purification, and fine purification according to the size of the collected dust particles. Coarse purification is to capture dust articles larger than 100 microns, medium purification is to capture dust particles of 10-100 microns, and fine purification is to capture dust particles of 10 microns.

The function of the dust collector is basically the same as that of the volumetric separator, but the structure is simpler. Its main function is to make the airflow to settle down the coarse particles in the airflow when it flows down in a roundabout way, so as to reduce the burden of the dust collector used in the second and third levels of dust removal and purification. The settling box is used for coarse purification, the second level dust collector is used for intermediate purification, and the third level dust collector is used for fine purification.

The second level of dust removal generally uses the CLT/A cyclone dust collector, and its dust removal efficiency can reach up to 70-90. When dealing with large air volume, a large-diameter cyclone dust collector is required, but the dust removal efficiency will be reduced at this time. In order to maintain high dust removal efficiency, a two-stage cyclone dust collector with a concentrator can be used to remove dust. The efficiency is 85-90. The third level dust collector generally adopts pulse jet type filter cartridge dust collector. When the dust on the filter cartridge is removed, this kind of dust collector can clean the dust without stopping the wind. Its dust removal efficiency is 90.

In ventilation and dust removal devices, high-pressure centrifugal fans are usually used. The exhaust noise and mechanical noise produced by high-pressure centrifugal fans will cause harsh working environments. For this reason, a silencer can be installed on the exhaust spring of the fan. To reduce exhaust noise. In order to reduce the mechanical noise, the ventilator can be placed in the ventilator room with sound insulation device, or the sound insulation material can be hidden outside the ventilator casing.

dust collector

Test standard of shot blasting machine

Rust removal grade and surface roughness are the important standards for testing whether the shot blasting machine is qualified.

The removal grade that can be achieved by shot blasting machine is SA2.5-SA3, which means after the shot blasting, the surface of steel without oil, oxide scale, rust and other contaminants, and the surface show a uniform metallic luster.

The surface roughness that can be achieved by shot blasting machine is 25-75μm, the influencing factors including blasting speed, blasting time, type and size of steel shot, etc…

shot blasting machine 2shot blasting machine 5shot blasting machine 8

Application field of shot blasting machine

Steel industry

Shot blasting machine is widely used in steel industry, such as steel plate, H beams, steel structure, steel pipe, wire and other steel products to remove rust, scale and others.

Foundry industry

Shot blasting machine can be applied to the surface sand and oxide scale removal of cast steel and cast iron in the casting industry. Almost all steel castings, gray castings, ductile iron, etc., should be shot blasted. This is not only to remove the casting surface scale and sand, but also an indispensable preparation process before casting quality inspection.

Machinery (motor) industry

According to the requirements of the automobile manufacturing industry, the steel plate and casting parts used need to be blasting, but the strength of the steel plate and the original appearance should not be damaged, and the appearance of the casting parts should be ensured to be clean and beautiful. Since the parts of machinery and motor are not very regular, it requires a different type of shot blasting machine to finish.

Construction industry

There are many parts in the construction industry can be used for shot blasting machine, such as scaffolding, tower crane, aluminum formwork, steel structure, screws and bolts, etc

Shipbuilding industry

The steel plate used in the shipyard has rust will affect the quality of shipbuilding.

It takes a long time to use artificial derusting, so it is necessary to choose the shot blasting machine for derusting cleaning. Generally, the shot blasting and painting line is used more in shipyards, which can not only remove rust from steel plates, but also spray paint to ensure the quality of shipbuilding.

Aerospace industry

The aerospace industry has high requirements for its parts, not only requiring them to be light in material, but also requiring them to be able to withstand extreme loads in extremely harsh environments. By protecting the surface of the parts from external damage and extending the fatigue life, the shot blasting machine can improve the overall performance of the parts.Most parts used in the aviation industry, from aircraft frames to engines, landing gear, drives, and transmission parts (gears/bearings), shot blasting to meet the performance requirements of their materials.

The type of shot blasting machine

Shot blasting machine is the non-standard machine, also called customized blasting equipment, that can according to the shape, size and cleaning requirements of the different workpiece to choose different types shot blasting machine.

Roller conveyor shot blasting machine

Roller conveyor shot blasting machine is the most common and environmentally friendly shot blasting machine. The machine is mainly used to clean steel plates, H beams, steel structures, steel pipes, steel channels, steel scaffoldings and other steel profiles. Through the pretreatment of the steel profiles, to achieve the smooth surface. So as to enhance the adhesion of the paint film and the steel surface, thereby ensuring the quality of the steel anticorrosive coating.

Roller conveyor shot blasting machine can used in many industries, such as aerospace, automotive, construction, foundry, shipbuilding and other industries.

roller conveyor shot blasting machine 1

Hanger type shot blasting machine

Hanger type shot blasting machine is the most flexible and high-efficiency shot blasting machine. The machine operation easily, loading the workpiece on the hook then into blasting chamber to work. After a few times, all progress are completed. Hook type blasting machine is divided into single hook and double hook, hook type blast machine by two hook loading workpieces alternately into the blasting chamber.

Hanger type shot blasting machine mainly used in foundry, mechanism, chemical, motor, and other industries, to clean various of medium or large casting, forging, welding workpiece, including some fragile and irregularly shaped workpieces.

hanger type shot blasting machine

Tumble belt  shot blasting machine

Tumble belt shot blasting machine usually clean some small or medium workpiece. The belt is made of a circular space to let the workpiece roll in it and to achieve the purpose of cleaning. The machine suitable for sand removal, rust removal, descaling and appearance strengthening of small castings, forgings, stamping parts, gears, springs, etc. It is especially suitable for cleaning and strengthening parts that are not afraid of collision and irregular shape workpiece. Tumble belt shot blasting machine is generally used in hardware manufacturing, die casting, precision casting and forging industries, etc.

tumble belt shot blasting machine

Rotary table shot blasting machine

Rotary table shot blasting machine is suitable for the cleaning of flat, thin-walled, sand-sticky oxide scale on the surface of parts that are afraid of collision in the casting and forging and heat treatment workshops. It not only can remove the rust on the surface of the workpiece, but rust and dirt on various workpieces can also be cleaned, and the surface quality of the workpiece can be improved. This machine is widely used in steel, metallurgy, rolling stock, construction machinery, heavy mining machinery and other manufacturing industries.

rotary table shot blasting machine

Mesh belt shot blasting machine

Mesh belt shot blasting machine used the mesh belt as the conveyor device. The machine can work continuously and in the progress of working have no collision. It suitable for small or medium workpiece and the production with large quantities. The machine is a multi-functional shot blasting machine for cleaning dishes, flakes, castings, machine bodies, and structural parts, and it mainly used in automobile, aerospace, aluminum alloy industry and machinery manufacturing industries.

wire mesh shot blasting machine

Overhead rail shot blasting machine

Overhead rail shot blasting machine is suitable for shot blasting large quantities of small and medium workpieces. The workpiece can run continuously or step by step along with the overhead rail conveyor system, so that the workpiece can be stopped in the loading and unloading area and the shot blasting area. Compared with hanger type shot blasting machine, that with high production efficiency. The machine is the most ideal choice for automobiles, tractors, diesel engines, motors, valves and other industries.

overhead rail shot blasting machine

Stone shot blasting machine

Stone shot blasting machine is a machine that is mainly for cleaning stone. The main stone materials include : marble, artificial stone, granite, curbstones, floor tiles, cement tiles, pavement tiles and so on. The treated stone surface has high anti-skid performance, good flatness and a strong three-dimensional effect. The pavers shot blasting machine is a newly developed new type shot blasting machine with high work efficiency, low use cost and good dust removal effect.

stone shot blasting machine

Pipe shot blasting machine

Pipe shot blasting machine is suitable for continuous shot blasting of the outer and inlet surface of batches of steel pipes before welding or painting to thoroughly remove rust, oxide scale and other dirt. After shot blasting, it can obtain a smooth surface with a certain roughness, increase spray adhesion, improve surface quality and anti-corrosion effect. The machine mainly used in some gas and oil industry, cylinder industry, shipbuilding and some other heavy industry.

pipe shot blasting machine

Barrel type shot blasting machine

Barrel type shot blasting machine is used to clean small and medium iron parts, steel parts, alloy and non-metal castings, forgings, heat-treated parts, stamping parts and assembly parts. The machine can achieve high-efficiency and uniform cleaning effect. In shot blasting machine, the barrel not only rotates but also shake up and down. Therefore, the workpiece in the barrel can be completed stirred. The barrel type shot blasting machine used in the automotive, iron, steel and metal industry, heat treat operations, forging operations and small stamping parts industries.

barrel type shot blasting machine

Wire rod coil shot blasting machine

Wire rod coil shot blasting machine is the most suitable machine to clean the wire rod coil surface oxide scale in the manufacturing industry. It is suitable for clean the outer surface of continuous batches to remove the oxide layer and stains, replace the pickling and phosphating process, reduce the investment cost, and present a metallic luster to facilitate the painting and coating of the workpiece.

wire rod shot blasting machine

Preservation line

Preservation line is the machine that combined the shot blasting system, painting system, drying system and paint mist treatment system in a whole machine and inform a continuous automatic working shot blasting and painting line, suitable for blast steel plate, h beam and other raw material. The machine mainly used in steel industry, aerospace, automotive, shipbuilding and other industries.

preservation line

Floor shot blaster

Floor shot blaster is used to remove the coating on the floor, decontamination of nuclear power buildings; small-area steel surface cleaning; cross-street overpass coating cleaning; airport demarcation project; railway bridge deck waterproofing construction; highway bridge-tunnel pavement roughening. The machine can make the concrete surface uniform and rough, which greatly improves the adhesive strength of the waterproof layer and the concrete base layer.

floor shot blaster

Continuous rocker barrel shot blasting machine

The continuous rocker barrel shot blasting machine is an automatic, continuous, and dust-free shot blasting equipment. It has a high degree of flexibility, can respond to changing production requirements, and can quickly adapt to changes in production efficiency, processing technology and market demand. The machine is used to the shot blasting the castings and forgings rust removal. The machine is suitable for the hardware industry, electroplating industry, automobile industry, bearing industry and some small and medium foundry industries.

Continuous rocker barrel shot blasting machine

Continuous tumble pass-thru shot blasting machine

Continuous tumble pass-thru shot blasting machine is mainly used for surface derusting and burr removal of small and medium- size castings that are not afraid of corrosion. It is suitable for shot blasting of runners and risers during the production of large-volume castings.

Continuous tumble pass-thru shot blasting machine

Shot peening machine

Shot peening machine is mainly suitable for mass production of surface cleaning of small and medium-sized workpieces, such as engine connecting rods, gears, diaphragm springs, etc. It is widely used in casting and automobile manufacturing. It has high production efficiency, good sealing effect, compact structure, convenient loading and unloading, high technical content and other features.

shot peening machine

Working routine of shot blasting machine

  1. Dust collect system running
  2. Elevator running, separator running
  3. Screw conveyor running
  4. Workpiece transport system running, let the workpiece into blasting chamber.
  5. Blast wheels running
  6. Open abrasive supply valve, start work
  7. After the blast, close abrasive supply valve
  8. Blast wheel stop
  9. Workpiece transport system running, move out the chamber
  10. Continue to work, repeat step 4-9
  11. If stops working, please let the elevator stop, the separator stop, the dust collector stop, the whole machine stop.

How to maintenance the wear resistant parts of shot blasting turbines?

The shot blasting turbines mainly wear resistance parts including side guard plate, rear guard plate, top guard plate, blades, distributor, and control cage.  If the wearing parts are severely worn and not replaced in time, the service life of the shot blasting machine will be affected. When the shot blasting machine vibrates too much or abnormal noise occurs, the machine must be shut down to check the use of the wearing parts and check whether foreign objects enter the shot blasting machine.

After each shift, check the wear of the wearing parts of the shot blasting turbines.

The blades are the wearing parts that rotate at high speed and are most easily worn out. The wear of the blades should be checked frequently. When the following situations occur, the blades should be replaced.

  1. The blade thickness is reduced by 4-5mm
  2. The blade length is reduced by 4-5mm
  3. The shot blaster vibrates severely

Inspection Method

If the shot blasting turbines are installed in a shot blasting chamber that is easy for personnel to enter, the blade can be inspected in the shot blasting chamber; if it is difficult for maintenance personnel to enter the shot blasting chamber, the top plate of the shot blasting turbines must be opened outside the shot blasting chamber for inspection.

Note: When the blade is replaced, all the blades should be replaced; the weight difference between the replaced blades should not exceed 5g, otherwise there will be greater vibration when the shot blasting machine works.

How to maintenance the wear resistant parts of shot blasting turbines1

The distributor is located in the control cage of the shot blasting turbine, which is usually inconvenient for inspection. You can check the wear of the distributor every day when the blade is replaced.

If the distributor continues to be used after it is worn out, the projectile diffusion angle will increase, which will accelerate the wear of the shot blasting turbine guard plate, and affect the cleaning effect and efficiency. If the outer diameter of the distributor wears 10-12mm, the distributor needs to be replaced.

The main function of the control cage is to adjust the spray angle of the shot blasting turbines, so the direction adjustment of the control cage is particularly important for the use of the shot blasting machine. Before the new shot blasting machine is used, the position of the control cage must be adjusted correctly, so that as many projectiles as possible are projected to the surface of the workpiece to ensure the cleaning effect and the service life of the wear protection plate of the shot blasting chamber.

Adjustment method

  1. Paint black ink on the board or spread a piece of thick paper, and place it on the position of the workpiece to be cleaned.
  2. Turn on the shot blasting turbines, and manually add a small amount of steel shot into the quicksand tube of the shot blasting turbines.
  3. Turn off the shot blasting turbines. If the position of the ejection belt is advance, the position of the control cage will be adjusted in the opposite direction after the shot blasting turbines. After adjustment, go to the second step to continue to check whether the adjustment is in place.
  4. After reaching the satisfactory result, mark the position of the control cage window on the shell of the shot blasting turbine for reference when replacing the blades, distributor, and control cage later.

Control cage wear inspection

  1. If the window is worn within 10mm and the window is worn at 5mm, it is necessary to extend the position mark of the control cage to rotate the control cage against the impeller rotation by 5mm; the window is worn by 5mm, and the position mark of the control cage needs to be extended to rotate the control cage against the impeller by 5mm.
  2. The control cage needs to be replaced if the window is worn out by 10mm.

Choose the right abrasive

Abrasive is an important medium for shot blasting machine work, and it can affect the blasting effect. And correct choice of shot blasting media can mean great savings which most of users are not even aware of.

Chemical component

Products Steel shot
 

Chemical Composition

C 0.70~1.20%
Mn 0.35~1.20%
Si 0.40~1.20%
S ≤0.05%
P ≤0.05%

Hardness

If the steel shot/ steel sand is too soft, it will slow down the cleaning speed and reduce the working efficiency. Hardness is too high, will produce unsatisfactory surface, increase the fragmentation rate of the projectile, consumption is too high, and the equipment wear is larger.

steel shot

Overhead rail shot blasting machine delivery to customer workshop

Overhead rail shot blasting machine delivery to customer workshop

Last week we deliver a set of overhead rail shot blasting machine to our customer workshop. The machine can clean the maximum object item dimension is the diameter 1200mm and height 1500mm. This machine is a step-type shot blasting machine with 6 sets of blast turbines.

The overhead rail shot blasting machine can clean the surface cleaning or strengthening of various medium and small casting, forgings, and riveting parts, especially for the thin and thin-walled parts that are afraid of collision. The machine adopts no pit design, which is easy to install. It not only has high production efficiency but also has a high cleaning effect.

The overhead rail shot blasting machine according to items features, size and the production capacity divided into continuing through type overhead rail shot blasting machine, step-through type overhead rail shot blasting machine, and accumulation type overhead rail shot blasting machine.

Overhead rail shot blasting machine delivery to customer workshop 2

The continue through type overhead rail shot blasting machine is not only can be used with the coating line but also can use as a single machine. The continue through type as its name can working continues. When one workplace is blasting, the other one can loading and unloading the items. The machine can highly improve the working efficiency and it also can save labor and cost.

The step-through type overhead rail shot blasting machine working principle is when the one item into the blasting chamber and start to blasting, the door will be closed and the item rotary in the chamber. After blasting is completed, the door opened and the item is out of the chamber. Users can according to their item’s requirements to adjust the cleaning time to control the productivity and cleaning effect. This machine realizes a double working place for blasting and unloading items.

The accumulation type overhead rail shot blasting machine is designed according to the object items’ requirements. The users can perform intermittent work on the machine according to the situation. The hook walking trough on the shot blasting machine adopts a three-stage sealing protection method of flexible steel core rubber plate, nylon brush, and air-controlled pull cover plate, with a good sealing effect.

Overhead rail shot blasting machine delivery to customer workshop 1

Blasting turbines are the important parts of overhead rail shot blasting machine. It adopts centrifugal high-efficiency and energy-saving blasting turbines. It throws steel shots at a high speed, large abrasive flow rate, rapid blade replacement, and convenient maintenance, which is more economical than old ordinary blasting turbines. Spare parts cost 60%, energy-saving 70%. The overhead rail shot blasting machine has a hook device, chain walking system, workpiece rotation structure three parts, stable performance, reliable quality. It has two hooks into the blasting chamber at a time, the door is closed regularly, The thrown projectile hits the workpiece, the workpiece is automatically rotated for 2-3 minutes, the workpiece is cleaned, the back door is automatically opened, 2 hooks are automatically discharged out of the equipment, and the other 2 hooks enter the equipment to accept the next shot blasting cleaning. The overhead rail shot blasting machine adopts a curtain-type separator, which greatly improves the separation quality, separation efficiency, and abrasive flow rate.

QGMA machinery is a professional shot blasting machine manufacturer and all machines have passed CE, ISO and other certificates. If have any questions please do not hesitate to contact me, we will give you professional and cost-effective solutions.

What is the important things that for the operators to operate the shot blasting machine

The shot blasting machine is an essential element of the surface cleaning process, so it is important that the machine operator knows the basic principle of operation and all the factors that affect its operation. When purchasing a QGMA machinery shot blasting machine, each customer receives instructions for operating the machine and a service book, which describes in detail the service program. Often, daily, weekly, or monthly checking of the operation of individual components of the machine represents unnecessary work, but in the long run, this can also mean 20 to 30% higher savings.

What is the important thing for the operators when they operate the shot blasting machine? Let QGMA machinery introduce to you the three key parts of a blasting machine that we need to pay the most attention to are the following:

  1. Blasting wheel
  2. Cleaning system
  3. Ventilation

Blasting wheel

Blasting wheels are the most important part of a blasting machine, which is the core of the shot blasting machine. So they need special attention. For optimal operation of the shot blasting machine, it is important that the correct amperage and right angles are set, as this is the only way to achieve maximum blasting efficiency. If these settings are not arranged, the desired quality of shot blasting is not achieved, and the cycle is extended.

The blasting wheel is composed of an impeller, control cage, distributor, blades, and some guard plates. After use, a period of time, need to replace these parts regularly.

What is the important things that for the operators to operate the shot blasting machine 2

Cleaning system

Another important part of any shot blasting machine is the proper operation of the cleaning system. The basic task of the cleaner is to remove impurities that get into the blasting media. It is necessary to control the operation of the cleaner and if necessary, clean the impurities. Efficient removal of used blasting media and dust significantly reduces wear on blasting wheel parts and the machine, increases blasting efficiency, shortens blasting time, and enables energy savings.

The cleaning system including a nylon brush, blowing fan, and screw conveyor. These parts will design according to the workpiece size.

What is the important things that for the operators to operate the shot blasting machine 1

Ventilation

The main purpose of the dust collectors is to clean the air that is sucked out of the machine. It works on the principle of dry cleaning dirty air with polyester or cellulose inserts. It performs its functions automatically and requires very little maintenance. However, some attention needs to be paid, as this ensures a long service life and operation without unnecessary downtime. If the ventilation does not work properly, dust accumulates on the workpieces, which reduces the quality of the finished products. QGMA adopt the pulse jet to clean the dust on the filter cartridge. The cleaning efficiency can be up to 99%.

If you think this is too much of a challenge for you and you need help, let us know. We will be happy to help you make your shot blasting machine work perfectly.

QGMA machinery is a professional shot blasting machine and sandblasting room manufacturer. Please feel free to contact me if you have any questions. Our engineering team will give you the most professional and cost-effective solutions.

What is the important things that for the operators to operate the shot blasting machine 3

What is the structure of the shot blasting machine

What is the structure of the shot blasting machine

The shot blasting machine is composed of the shot blasting part and the electric control part. The shot blasting part including a loading and unloading conveyor system, blasting chamber, and others, the blasting chamber has blasting turbines; the electric control part mainly has various operation electrical components and some protective devices. Details are as follows:

Shot blasting system

  1. A set of shot blasting machine must need to have a loading and unloading system. No matter what kind of machine all need to equipped with the loading and unloading system. They mainly used to transport the workpiece into the blasting chamber. The machine also needs to have a recycling system to transport the steel shot to the blasting turbines.
  2. Most of the shot blasting machines put the blasting chamber as the main part of the machine. Usually, the blasting chamber includes blasting turbines, a blasting chamber, a sealing curtain, a guard plate, and other parts. According to the size of the blasting chamber and workpiece, it will be equipped with several blasting turbines to guarantee all the angles of the workpiece can be cleaned. The blasting chamber is will have three-layer rubber curtains to prevent the steel shot splash outside.
  3. Considered to save the operation cost and protection the environment, we will design a steel shot reclaim system. The system including a screw conveyor system, bucket elevator, and separator. The steel shot will through the screw conveyor system into the bucket elevator and then lift the steel shot and impurities to the top of the bucket elevator, through the screw to the separator. The steel shot and impurities will separate in the separator. The cleaned steel shot will storage in the hopper to reuse.

What is the structure of the shot blasting machine 1

Electric control system

  1. A shot blasting machine generally uses a circuit breaker to protect the motor from short-circuits, and a thermal relay device to protect the motor from overload.
  2. For the system of reclaim system, it is necessary to configure a detection switch to detect the operation of the system at any time to prevent blockage. If there is a blockage or trip, a PLC device is also required to give an alarm.
  3. The access door of the blasting chamber needs to be equipped with a stroke switch to facilitate safe maintenance operations. A stroke switch should also be installed on the end cover of each blasting turbine.
  4. Switches should be installed at the high and low limit positions of the lifting motor to ensure that the lifting stops automatically, and a level gauge should be installed on the bin of the separator to realize the control operation.
  5. It is necessary to ensure that the blasting turbines and their cover plate, and the inspection door have an interlocking response. When the cover plate is opened, the blasting turbines cannot be started.
  6. The blasting turbines should also have an interlocking response with the shot supply gate. When the blasting turbines are not running, the shot supply gate will not work.

Any other questions please do not hesitate to share them with us. QGMA engineering team and I will give you the most professional and cost-effective solutions.

What is the structure of the shot blasting machine 2

Different kinds of shot blasting machine principle

The shot blasting machine has many kinds of types, such as barrel type, tumble belt type, hanger type, overhead rail type, rotary table type, and so on. Different shot blasting machines have different working principles, now let QGMA machinery introduce them.

  1. Barrel type shot blasting machine

This type of shot blasting machine has an impellor with high speed. The impeller throws the castings into the rotary roller and then cleaning them. This machine used to clean the casting rust, sand, which need to within 15kg. The machine can be used in many industries which not afraid of collision and will not scratch.

  1. Tumble belt type shot blasting machine

This type of shot blasting machine needs to put the castings into the tumble belt roller and when the quantity is enough, the machine will be operating. When the tumble belt starts to work, the machine will bring the castings rotated in the blasting chamber. The blasting turbines will projectile the steel shot on the surface of the casting to achieve the cleaning effect. This type of machine can be blasting the casting within 150kg.

Different kinds of shot blasting machine principle 3

  1. Hanger type shot blasting machine

This type of shot blasting machine is a standard machine. First need to run the bucket elevator, screw conveyor, and dust collector system. And then put the castings on the hook, press the start button. The castings will according to the track into the blasting chamber and will complete cleaning work in a short time. This machine suitable for cleaning the surface of some large and medium castings, forgings.

  1. Overhead rail type shot blasting machine

This type of shot blasting machine is used to clean some medium and small workpieces in batches. The machine uses the chains to transport the workpiece into the blasting chamber. In the loading, unloading, and blasting progress the workpiece can keep stationary form so that it will realize fixed-point loading and unloading and fixed-point shot blasting. This machine can carry a lifting weight of 50 kg to 2,000 kg, with high efficiency and reliability.

Different kinds of shot blasting machine principle 2

  1. Rotary table type shot blasting machine

This type of shot blasting machine is used the drive the rotation of the pill scraper through its transmission system, it will transport the steel shot to the bottom of the bucket elevator and then to the separator, via the abrasive pipe and other parts enter the blasting turbines. The workpiece will enter and out the blasting chamber with the turntable of the machine. The blasting turbines rotary at a high speed and the workpiece can be clean well.

Different kinds of shot blasting machine principle 1

  1. Road shot blaster

This type of shot blasting machine is used electric power, which drives the machine to work and projectile the steel shot on the surface of the workpiece with high speed. The steel shot will form a certain impact on the surface of the workpiece. The steel shot and the impurities are cleaned inside of the machine by the dust collector system. The cleaned steel shot will be reused. The dust also can be removed in the progress of the dust collector and is very environmentally friendly.

No matter what kind of the shot blasting machine, no matter what kind of working principle is the machine. The machines have the same point is to use shot blasting to clean the workpiece surface, the difference is the workpiece weight, types, and others. We usually use the different to choose the suitable shot blasting machine for our customers.

 

 

The safety operation of roller conveyor shot blasting machine

The roller conveyor shot blasting machine is the machine that continues to removing oxide scale, clean, and pretreatments of various materials, such as steel plate, steel profile, section steel, steel pipe, and others. To make sure the safety operation, we need to do the following:

(1). It is strictly forbidden to violate the operating procedures of the roller conveyor shot blasting machine, otherwise unnecessary losses may be caused.

(2). When the machine is running, the operator and the loading and unloading staff should wear protective glasses and work clothes.

(3). Because the workpiece running speed is not obvious, it is strictly forbidden to stand on the track during the running process, especially when standing in front of the moving direction of the workpiece, clearing the abrasive and observe.

(4). Clean up the abrasives scattered around the roller conveyor shot blasting machine in time to prevent slippage and injury.

(5). It is strictly forbidden to open the observation door of the sealed compartment at the inlet and outlet ends while the roller conveyor shot blasting machine is running.

(6).  The internal sealing material of the roller conveyor shot blasting machine is flammable, so the working temperature is strictly prohibited to exceed 200℃。 Open flames should be avoided during repairs and maintenance.

(7). It is strictly forbidden to open the top cover of the blasting turbines during the movement.

(8). The roller conveyor shot blasting machine has a red signal light under normal working conditions, and the buzzer will sound when an abnormality occurs. At this time, press the emergency stop button to stop the whole machine, find out the cause and eliminate the fault before it can be turned on.

(9). A warning sign must be hung on the electric control cabinet during maintenance, and the main power supply must be cut off when it is necessary to enter the machine for maintenance.

(10). Protective covers such as chains and V-belts should only be removed during maintenance and should be installed firmly when the machine is running.

(11). It is strictly forbidden to leave tools in the screw, chain, motor end, and other parts of the shot blasting machine during maintenance.

(12). Cut off the main power supply when there is a sudden power failure.

The safety operation of roller conveyor shot blasting machine 1

During use the roller conveyor machine, we inevitably need to adjust its separator, the specific adjustment method is:

  1. Properly adjust the gap between the adjustment shaft and the adjustment plate to control enough width and uniform cloth and flow curtain thickness.
  2. The particles of the separated substance can be realized by adjusting the two adjustment plates.
  3. Qualified steel shots enter the hopper of the blasting mechanism through the separator screen, effectively blocking the entry of larger bulk materials and ensuring the safe operation of the blasting turbines.
  4. There is an air volume adjustment plate at the junction between the air outlet of the separator and the duct of the dust collector, which must be adjusted to an appropriate position to ensure that useful projectiles are not brought into the waste bucket.

The safety operation of roller conveyor shot blasting machine 2

The shot blasting and painting line successfully accepted at the customer site

Qinggong Machinery production a set of shot blasting and painting line for our customer. Last week the machine is successfully accepted at the customer site. The cleaning effect and the coating effect are well received by the customer.

The structure and the principle of shot blasting and painting line

  1. The structure of the shot blasting and painting line

The shot blasting and painting line including a shot blasting system, painting system, drying system, and paint mist treatment system. The machine combines all system with a whole, to form a continuous automatic shot blasting and coating production line.

The shot blasting and painting line successfully accepted at the customer site 1

  1. The principle of shot blasting and painting line

The shot blasting and painting line uses the roller type continuous feeding shot blasting machine. During the shot blasting process, the adjustable speed roller conveyor controlled by the electric panel the steel structure or steel into the ejection zone of the blasting chamber. The strong and dense projectiles in the coordinate position hit and rubbed, causing the oxide scale, rust layer and dirt on it to quickly fall off, and the steel surface will obtain a certain roughness and smooth surface, and the workpiece is loaded and unloaded on the inlet and outlet rollers on both sides of the cleaning room. The projectiles and rust dust falling on the steel are blown by the blowing system, and the dropped abrasive dust mixture is conveyed by the recovery screw to the hopper, and the longitudinal and crosswise screw conveyors are collected in the lower part of the bucket elevator, and then lifted to the upper part of the machine for separation, the separated pure projectiles fall into the separator hopper for blasting recycling. Dust generated in shot blasting is sent to the dust removal system by the exhaust pipe, and the purified gas is discharged into the atmosphere, and the particulate dust is captured and collected.

After shot blasting, the workpiece enters the painting room, and the spray gun is evenly sprayed on the surface of the workpiece, and the workpiece is pushed to the drying room by the rotation of the roller table.

The workpiece enters the drying room, and the hot air is used to dry the paint layer attached to the workpiece using the principle of thermal circulation. The roller conveyor in the drying room is conveyed by a plated chain to reduce the contact surface of the workpiece to avoid damage to the coating.

As a procedure, the surface treatment is completed on the shot blasting and painting line. The shot blasting and painting line is a process that combines the processes of shot blasting, primer coating, and drying. After this process, the steel plate and profile are thoroughly shot blasted, and at the same time, an anti-corrosion coating can be sprayed. Compared with the traditional pickling spraying system, the shot blasting and painting system has many advantages. First, it is environmentally friendly and pollution-free. The use of steel shot will not cause waste pollution. Second, it will not cause hydrogen embrittlement. Third, shot blasting can complete texturing and avoid secondary texturing. Fourth, shot blasting can achieve stress strengthening and extend the life of the workpiece.

The shot blasting and painting line successfully accept in customers site 2

What are the features of wire mesh shot blasting machine

What are the features of wire mesh shot blasting machine

Wire mesh shot blasting machine through the wire mesh conveyor system to transfer the workpiece to the sealed shot blasting chamber, which uses the high-speed rotary blast turbine impeller to accelerate the projectile the steel shot to the workpiece surface to achieve the cleaning effect. The core of the wire mesh shot blasting is the circulating steel wire mesh conveyor belt, which is made of high manganese steel material. The machine can be equipped with 4 sets to 8 sets of blast turbines with different powers.

What are the features of the wire mesh shot blasting machine? Now let QGMA analyzed for you.

What are the features of wire mesh shot blasting machine 2

The structure of the wire mesh conveyor system:

Equipped with workpiece creeping mechanism, reducing or even eliminating mesh belt touch marks, continuous operation of flat workpieces, realizing the online fully automated operation

The application of the wire mesh shot blasting machine:

The mesh belt shot blasting machine is mainly used in automobile, aerospace, railway, and machinery manufacturing, especially suitable for surface polishing of small parts such as dish, sheet, casting, body, structure, thin-walled cast iron, or aluminum alloy castings. Pill cleaning can also be used for shot blasting strengthening mechanical parts.

The advantage of wire mesh shot blasting machine:

  1. The mesh belt structure is adopted, the forward speed of the mesh wire belt can be adjusted by frequency conversion, the shot blasting is more uniform, and the cleaning effect is high;
  2. Using a steel mesh belt, the slag skin is easy to leak, and the workpiece has good heat dissipation, which can realize the effective cleaning of high-temperature workpieces;
  3. The pellet recycling purification system adopts an overflow controllable full curtain multi-stage winnowing separator and a special polyester core hoist drive belt to realize the separation and recycling of pellets;
  4. The layout of the shot blasting chamber and the shot blasting device is determined after the computer’s three-dimensional dynamic ejection simulation.
  5. The thickness of the hot zone of the guard plate is up to 70mm, and the distributor maximizes the utilization rate of pellets to 95%. In China, this technology is unique to our company.
  6. The blasting chamber is welded with a 10mm thick steel plate to form a box structure with high strength and no vibration. The interior adopts 12mm ZGMn13, and the guard plate adopts the stop connection, which effectively prolongs the service life of the chamber body and can make full use of the rebound of the projectile to form a secondary cleaning.
  7. The front and rear sealing chambers adopt loose-leaf spring sealing V-shaped devices, which can effectively prevent the projectile from splashing and reduce the wear and tear of the seal. The remaining sealing layers are sealed with a high wear-resistant rubber belt.
  8. In order to reduce the friction to the bottom hopper during the falling process of the pellets, buffer angles are included on the hopper.
  9. In order to prevent deviation of the workpiece during the running process, there are stop plates on both ends of the mesh belt.
  10. The opening number of the shot blasting device can be determined according to the size of the workpiece, which can reduce unnecessary energy waste and reduce unnecessary damage to the equipment

What are the features of wire mesh shot blasting machine 1

Hanger type shot blasting machine shipped to Spain

Last week Qinggong Machinery has delivered a set of hanger type shot blasting machine to Spain. The customer used the machine to clean the used wheels.

The hanger type shot blasting machine can highly improve the working efficiency. The machine can complete more complex works, it not only can save working time but also can achieve the company working goals. There is a development trend for large-scale equipment that is more and more convenient to operate. After the operation of shot blasting machine becomes more convenient, enterprises do not need to hire more educated employees when using the equipment, thus reducing the enterprise employment costs.

The hanger type shot blasting machine mainly used in the casting industry, construction industry, and other industries. It is suitable for cleaning large, medium, and small workpieces, removing sand cores and oxide skins on the workpieces and using shot blasting technology to achieve the purpose of rust removal and strengthening. Shot blasting machine to clean the workpiece surface is the most environmentally friendly, economical, and reliable method nowadays. The cleaning room is protected by high chromium plates, which greatly improves the service life, beautiful appearance, and easy replacement.

Hanger type shot blasting machine shipped to Spain 2

The specific operation process of the hanger type shot blasting machine:

The workpiece to be shot blasted can be directly hung on the hooks, and operate the control system brought to the traction system at the front of the shot blasting chamber, and then the hooks with the workpiece automatically enter the shot blasting chamber. After the hook enters the shot blasting chamber,  the door of the shot blasting chamber will be closed pneumatically and electrically interlocked to prevent others from accidentally opening the door of the shot blasting room when the workpiece is being shot in the shot blasting room. The hook enters the shot blasting chamber to reciprocate and rotate back and forth at the set interval position so that the workpiece is fully ejected and the dead angle of ejection is reduced. Two hooks and one hook are projected in the shot blasting chamber, and the other hook can load and unload the workpiece. The shot blasting time can be adjusted according to the workpiece. After the shot blasting machine stops running, the door of the shot blasting chamber is opened to bring in and out the workpiece. The dust generated in the shot blasting process is filtered and discharged by the

Application scope of hanger type shot blasting machine:

Surface cleaning, finishing, and strengthening of aluminum alloy die castings, zinc alloy dies castings, copper castings, stainless steel precision castings, iron castings, motorcycle frames, and steel products. The hanger type shot blasting machine is the same as the overhead rail shot blasting machine. The workpiece is cleaned in the suspended and rotating state, and the throwing area is large and the cleaning effect is good. When cleaning large and complex parts, it does not need to turn over, which simplifies the operation. This allows the job requirements in large workshops to be met. secondary dust collector.

If you are interested in this kind of shot blasting machine, please no hesitate to contact us. We will be available for you all time.

Hanger type shot blasting machine shipped to Spain1