What is a shot blasting machine?

Nov. 14, 2019

Shot blasting machine is a mechanical device that uses high-speed projectiles thrown by blasting machines to clean or strengthen the surface of the workpiece. The shot blasting machine can simultaneously perform sanding, core removal and cleaning of the casting. It can also be used for surface treatment of forgings, aluminum-magnesium alloy parts, and brazing parts. Compared to other surface treatment technologies, it is faster, more efficient, and can be partially retained or stamped after the casting process. Some areas are also called sand machines and sand blasting machines.

In the 1930s, American companies made the first shot blasting machine in the world. China's shot peening equipment production began in the 1950s, mainly in the former Soviet Union technology. Shot blasting machines can also be used to remove burrs, diaphragms and rust, which may affect the integrity, appearance, or definition of the part of the object. The shot blasting machine can also remove surface contaminants from a partially coated surface and provide an adhesion surface profile that increases the adhesion of the coating. The shot blasting machine is different from the shot blasting machine in that it is used to reduce the fatigue life of the part by increasing the surface stress, increasing the strength of the part, or preventing fretting.

Steel Pipe Shot Blasting Machine

Steel Pipe Shot Blasting Machine

Application range

Surface cleaning.

The shot blasting equipment is first applied to the surface sanding and scale removal of cast steel and cast iron parts in the foundry industry.

Almost all steel castings, ash castings, Ma Steel parts, ductile iron parts, etc. are subject to shot blasting. This is not only to remove the oxide scale and sand on the surface of the casting, but also an indispensable preparation process before the quality inspection of the casting. For example, the large gas turbine casing must be subjected to strict metal parts surface cleaning machine before non-destructive testing to ensure the flaw detection results. reliability. In the production of general castings, shot blasting is an indispensable process for discovering surface defects such as subcutaneous pores, slag holes, and sand, cold insulation, and peeling. Surface cleaning of non-ferrous metal castings, such as aluminum alloys, copper alloys, etc., in addition to removing oxide scales and surface defects of castings, the main purpose is to remove the burrs of the die-casting parts and obtain the decorative surface quality. , get a comprehensive effect. In the production of metallurgical steel, shot blasting or pickling is a process for mechanically or chemically removing phosphorus skin to ensure high productivity in mass production of steel. In the production of other alloy steel sheets and strips such as silicon steel sheets and stainless steel sheets, annealing or pickling treatment must be performed after annealing in the cold rolling process to ensure the surface roughness and thickness precision of the cold-rolled steel sheets.

Workpiece reinforcement

According to the modern metal strength theory, increasing the misalignment density inside the metal is the main direction for improving the strength of the metal. Practice has proved that steel plate shot blasting machine is an effective process to increase the structure of metal dislocations. This is of great significance for workpieces that cannot be further strengthened by phase transformation hardening (such as martensitic quenching) or phase transformation hardening. Aerospace, aerospace industry, automobiles, tractors and other components require lighter weight, but the reliability requirements are getting higher and higher. The important process measures are to use the shot blasting process to improve the strength and fatigue strength of the components.

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