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.

How to choose the suitable way to clean the workpiece surface easily

How to choose the suitable way to clean the workpiece surface easily? If you do not have any ideas, please let QGMA machinery give you the unmatched quality sandblasting room at an affordable price.

In the beginning, there is a question that what is sandblasting?

Sandblasting is a method that can change the metal surface and remove the substance from the metal surface. This process is accomplished by using quality equipment such as air guns and spinning paddles. According to the needs to provide different shot blasting services. The steel shot can be made from a variety of materials, such as sand, silicon carbide particles, or steel balls.

It is usually used to clean metal surface. This unique program is also used to change the texture or surface coating of the metal for decorative purposes to improve its appearance. There are two different techniques to perform the sandblasting function. Sandblasting is a process done with different types of high quality abrasives. By using the abrasive can remove excess material from the surface.

How to choose the suitable way to clean the workpiece surface easily 2

Sandblasting is a special surface treatment program that is widely used in a variety of different industries with a large number of targets. It is the process of accelerating the grinding medium through a nozzle with the help of compressed air. The abrasives used vary according to the surface treatment required. Several common abrasives used by experienced experts in this process include:

  • Steel shot
  • Steel grit
  • Glass bead
  • Crushed glass
  • Aluminum oxide
  • Silicon carbide
  • Plastic
  • Walnut shell
  • Corn cob
  • Baking soda
  • Ceramic grit
  • Copper slag

How to choose the suitable way to clean the workpiece surface easily 1

Before starting sandblasting, it is necessary to select the best media for performing the procedure. It is the most important decision in the business of abrasive blasting procedures. The different media types have different rigidity, thickness, and shape, as well as each, is obtainable in a broad range of particle sizes. Most of the time it is also essential for sample processing to take place to lock in the final media type and size as well. The equipment utilized to perform the sandblasting procedure varies through industry; there are hand cabinets, dedicated automatic high production models, and completely robotic systems with closed loop process controls.

The range of uses for abrasive grit blasting is very broad and includes:

  • This process is performed for surface preparation prior to painting, bonding, or other coating operations.
  • It is highly used for removing rust, scale, sand, or paint from the fabricated components.
  • This process is used in preparation for thermal spray coating for roughening industrial gas turbine engine component surfaces.
  • Used for removing burrs or edge profiling machines components.
  • Giving a matte cosmetic surface finish on consumer products.
  • This process is carried out for removing mold flash from plastic components.

This is an important procedure that is utilized not only to remove rust but to prepare surfaces for high performance coatings as well as to treat final products to give them the luster and surface texture desired by the prospective consumer.

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

How many indispensable benefits the sandblasting room have

How many indispensable benefits the sandblasting room have?

If you want to treat some kinds of object items’ surface smooth, then QGMA sandblasting room is the best choice for you. There has the best service that can clean, sculpt, smooth, or shape different types of surfaces.

There are several basic factors that contribute to the provision of such services. The most important element essential to providing sandblasting in an effective manner is the sandblasting room. These services are performed in the sandblasting room, which is an efficient way to prepare large parts while providing a safe environment for operators. The sandblasting room will be designed according to the application, part size, productivity, and type of abrasives to be used, as well as the workflow of finished parts. The sandblasting room is widely used to remove coatings or to prepare surfaces for paint and powder coatings.

How many indispensable benefits the sandblasting room have 1

The sandblasting room has five common components, such as the sandblasting wall, dust collector, abrasive recovery system, sandblasting system, and electrical control system. The casing will be manufactured to contain dust from the sandblasting process. It also provides complete ventilation and lighting for operators so that they can do their jobs. Depending on the sandblasting process, the actual room has a variety of options.

The sandblasting room is designed for larger parts such as tanks, equipment, or vehicles. There are few options available to customize the room for precise applications, such as crane chutes, trolley tracks, ducts/pipe chutes, and drives with doors at both ends of the room.

The size of the sandblasting room will determine the ability of the dust collector to adequately remove dust and debris from the indoor air. Proper ventilation is an essential element in providing a safe, efficient, and effective working environment.

How many indispensable benefits the sandblasting room have 2

How many indispensable benefits does the sandblasting room have? Now let’s QGMA machinery introduce to you. As below:

  • Compatible with environmental regulations
  • Keep the plant environment clean
  • Avoid air pollution caused by open-air blasting
  • Switch to indoor sandblasting
  • Switching to an expensive chemical stripping method at the front end
  • Cost of chemicals and their handling
  • Protect employees from dust and toxic chemicals
  • Material costs are eliminated by switching from expensive single-use sand to recyclable abrasives
  • Use abrasive media to remove corrosion, scale, old coating, debris, burrs
  • Provide anchoring patterns to promote better paint adhesion
  • Sandblasting with penning media improves the fatigue life of steels and many other metals
  • Easily sandblasting of heavy and large components
  • Sandblasting in an enclosed room reduces weather restrictions in open-air sandblasting
  • Sandblasting rooms is customized according to component specifications

So, if you are looking for a sandblasting room, first visit with the best Manufacturer of the sandblasting room who offers you unmatched quality as well as a well-equipped room where all the sandblasting activities are done in an efficient manner. These rooms provide a safe environment for workers and are completely protected from harmful sandblasting dust.

QGMA machinery is a professional shot blasting machine and sandblasting room manufacturer. If you have any questions about the machine, please do not hesitate to share them with us.

How many indispensable benefits the sandblasting room have 3

How to choose different type of blades

As we all know, the shot blasting machine is composed of many parts, such as a roller conveyor system, shot blasting system, abrasive reclaim system, dust collector, and others. Among them, the shot blasting system is the most important part of the machine. Now let QGMA introduce some points to explain how to choose different types of blads.

The importance of the blast turbines

The blast turbines are the core of the shot blasting machine, which has a great impact on the surface of the workpiece. The KT series of blast turbines, which Qinggong Machinery developed is distinguished by exceptional characteristics. It also has various component configurations and easy maintenance.

How to choose different types of blades 2

Types of the 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.

Choice of the blades

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:

  1. When more particle energy is required and distance is greater
  2. The workpiece with higher requirements for roughness
  3. 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.

How to choose different types of blades 1

Replace the blades

If you first decide to use a straight blade and later find that you don’t get the right results and prefer to use a curved blade, this is not a problem because all parts are interchangeable. The KT series wheels can be fitted with straight or curved blades, as changing blade type and the material does not represent any additional cost or modification.

The KT series blast turbine has proven to be cost-effective and reliable as they are used by many customers in the foundry, metalworking, and automotive industries.

The KT series of high-performance turbines have spare parts for the shot blaster, including a shot blaster with eight projectile blades locked in the wheel twin discs. Double disc wheel has the following advantages:

Improved abrasive flow speeds up cleaning cycles

Directly mounted motors or spindles eliminate manual wheel positioning problems

The front of the housing provides easy access to the runner’s head

Optional replaceable, durable cast liner

Integrated dual labyrinth hub seals provide a superior abrasive seal

T-nut helps to replace the housing

Integrated U – shaped inlet fixture for improvement adjustment and assembly

Low speed and high-speed direct-drive motors

The directly-coupled spindle drive allows the reuse of existing motors

Fewer parts wear due to higher concentricity and more precise alignment

QGMA machinery is a professional shot blasting machine and sandblasting room manufacturer. We have sufficient accessories support. No matter what kind of blast turbines you used, we can give you the most suitable spare parts.

Please do not hesitate to share with me any ideas about the shot blasting machine and sandblasting room. Our engineering team will give you the most professional and cost-effective solutions.

How to choose different types of blades 3

Sandblasting room shipped to Australia

Sandblasting room shipped to Australia

Yesterday we shipped a set of sandblasting room to Australia. The machine size is 13m*8m*6m, with a trolley that has 5T loading capacity. Sandblasting room is an alternative to chemical cleaning or outdoor blasting. It becomes more and more popular across a wide range of industries.

Benefits of sandblasting room

Via removal of rust, coatings, and other surface materials sandblasting can make sure the new coatings better adhere to the surface of the item. Sandblasting is more friendly for the environment. It not only eliminates chemical clean costs but also can reduce toxic chemical exposure. The sandblasting room can allow companies to arrange the production under the control of the weather conditions, time of the day, or other activities that occurred nearby. This multi-function machine can save more costs, and in fact, the sandblasting room can pay for itself in just a year.

Sandblasting room shipped to Australia 1

Requirements and preparation of sandblasting room

The sandblasting system relies on a modern, well-designed sandblasting chamber to ensure a closed, controlled, and clean environment for abrasive recovery. Whether it is to remove an existing coating or to prepare a surface for a new coating, it is essential to use an air compressor for optimal surface treatment.

Sandblasting rooms also have many sizes and material preparation requirements. Some factors to consider include the size and weight of the maximum workpiece, material handling method, sandblasting time, and base material. Also, the width and length of the room had to be increased by four to five feet, depending on the size of the largest piece. The height of the room is also determined by the largest workpiece, but material handling plays an important role in this.

Sandblasting room shipped to Australia 2

Components and design of the sandblasting room

The dust collection system is the key component of the sandblasting room. Reverse pulse cartridge precipitators are now standard because they have a reliable exhaust motor that takes the air out of space and traps it in the filter. These collectors also feature enhanced pleated paper to improve filtration efficiency and reduce size requirements for the facility’s dust collection system. Proper maintenance, such as occasional dusting of ink cartridges, is also important. However, some modern techniques allow self-cleaning through a brief reverse flow of air. Pulse sensing technology differentiates the pressure between the clean and dirty sides of the filter. The dust collector must produce 50 feet of air per minute through the enclosure. The production of dust or hazardous materials may even require rates of up to 100 FPM.

Whether you need to remove abrasive material from the inside of the tank car or from smaller gaps or containers, your plan should include vacuum recovery. Blasting medium recovery systems should be carefully analyzed, as an efficient recovery system is essential to minimize cleanup time and overall project costs. Efficient capture of the media for delivery to the recovery point and reliable transport of the media to cleaner areas are essential for normal performance.

Manufacturers and distributors of these systems typically offer a variety of recovery solutions for all or part of the floor space installation. With no moving parts, pneumatic recovery systems work well with lightweight media such as agriculture, plastics, glass beads, and alumina. Mechanical flooring reduces procurement and installation costs and utilizes pneumatic power. It also has trapezoidal steel blades to provide power.

The spiral bottom plate is generally used for steel sand and steel shot. Although they are more expensive and require more digging, they are best at moving the heaviest abrasives.

The cleaning system requires regular shut down for cleaning, which is very suitable for infrequent or irregular blasting needs. These floors use swing technology to move abrasive and dust to cross plates or screw conveyors.

Sandblasting room shipped to Australia 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.

 

 

What is the role of the dust collector of the shot blasting machine

What is the role of the dust collector of the shot blasting machine

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 particles 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. Increasing the number of dust removal stages in the ventilation and dust removal device can obviously improve the dust removal efficiency, but the general dust removal system only uses two-stage dust removal; only the one-stage fine-purification dust collector is used for the cleaning work with the least dust.

What is the role of the dust collector of the shot blasting machine 2

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 of model CR205 can be used to remove dust. The efficiency is 85-90. The third level dust collector generally adopts LDM type 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. There is also a flat bag cylindrical rotary back-blowing dust collector. Its single machine capacity is large, which can make the piping system simple and occupy a small area. It is especially suitable for large air volume and high negative pressure ventilation and dust removal devices. In addition, a wet CCJ/A self-excited dust collector can also be used, with a dust removal efficiency of 98-99.

What is the role of the dust collector of the shot blasting machine 1

Dry dust collector finally solves the problem of ash transportation and treatment; wet dust collector must solve the problems of sludge treatment and sewage treatment. In the northern region, it also solves the problem of antifreeze, and the sewage treatment device is relatively large.

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.

How to maintenance the wear resistant parts of shot blasting turbines

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 turbines 2

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.

How to maintenance the wear resistant parts of shot blasting turbines1