The shot blasting machine is widely used in the surface treatment of casting and heat treatment, but the shot blasting process is a complicated process. It must take into account the influence of various important factors at different positions on the shot blasting of the workpiece. The impact of the pill machine is particularly serious.

The adhesion and adhesion of oil and grease results in a reduction in the necessary free-flowing properties of the projectile loss, and the dust and fine particles adhere to each other and form larger particles, eventually forming agglomerated particles. Process contamination by oily substances means that shot blast coverage is no longer certain, becomes uneven and unstable, and incomplete surface coverage can lead to premature crack formation and expansion. The risk of stress corrosion cracking also increases and leads to premature failure of the workpiece.

The resulting consequences:

Shot blasting strength is reduced;

The roughness of the blasted surface is reduced;

Cold processing capacity continues to decrease;

These processes are emerging and uncontrollable, so process reliability can no longer be maintained.

The influence of the surface of the product During the casting process of the die-casting workpiece, the surface treatment is often performed by the shot blasting process. After the surface is wetted by the oil film, the dust particles and contaminants formed by the wear metal adhere to the surface of the casting. It will cause uneven casting of the castings, and the degree of discoloration varies greatly.