Nowadays, many industries use the shot blasting machine. The shot blasting machine is not only use in some metal industries, but also can use in construction industries, petroleum industries, natural stone industries, shipyard and ship building, etc. Now let QGMA Machinery introduce the application field of shot blasting machine to you.
what is shot blasting machine
Shot blasting machine is the machine that use the blast wheels projectile the high-speed steel shots to clean or strength the surface of workpieces. Shot blasting machine can remove burring, rusting and oxide scales and increase the adhesion effect between workpiece and coating, so that to achieve the purpose of strengthening the workpiece.
Shot blasting machine is different from the sandblasting machine. The shot blasting machine is used to reduce the fatigue life of workpieces and increase the strengthen of the workpiece or prevent fretting.
Scope application of shot blasting machine
Shot blasting machine is first used in the foundry industry to remove the sand and oxide scale on the surface of casting steel or casting iron workpieces. Almost of the steel casting, gray casting, malleable iron parts, ductile iron parts need to be blasted. That no only to remove the oxide scale and sand on the surface of casting, but also a necessary process before the quality check of the casting. For example, the large size of the gas turbine engine
must be blasted strictly before the non-destructive inspection, to make sure the inspection result reliability.
In the production of casting, shot blasting is the essential process to find the casting surface defects, as subcutaneous pores, slag holes, sand sticking, cold insulation and peeling.
For non-ferrous metal castings, as the surface cleaning of aluminum alloys, copper alloys etc. Except to cleaning the oxide scale and find the defects of the casting surface. The mainly purpose is adopt to the shot blasting to clean the burrs on the casting surface and obtain decorative surface quality.
In the production of metallurgical, shot blasting or pickling is a method to guarantee high productivity in the mass production of steel to remove the dephosphorization by mechanical and chemical.
In the production of silicon steel plates, stainless steel plates and other alloy steel plates and strips, in the process of cold rolling must be annealed and then shot blasted or pickled to ensure the surface roughness and thickness accuracy of the cold rolled steel plates.
According to modern metal strength theory, increasing metal inside dislocation density is the main direction to improve the strength of the metal. Practice has proved that shot blasting is an effective process to increase the metal dislocation structure. This is of great significance to some metals that cannot be hardened by phase transformation (such as martensitic quenching etc) or require further strengthening on the basis of transformation hardening. Aviation, aerospace industry, automobiles, tractors and other parts require lighter weight, but the reliability requirements are getting higher and higher. The important process is to use shot blasting to improve workpiece strength and fatigue strength.