Alloy steel shot is widely used in the surface spraying and polishing treatment of high hardness workpieces such as automotive springs, suspension springs, quenched gears, screws, chains, various stamped parts, standard parts, and stainless steel due to its bright appearance and non rusting characteristics. It has the functions of surface peeling and surface strengthening treatment for processed workpieces.
Is it better for alloy steel balls to be rounder? During the process of granulation preparation, the molten steel cools from liquid to solid and shrinks during the cooling process. This type of shrinkage is carried out in a free state, and there is no riser like casting to supplement the reduced volume of steel after shrinkage, resulting in elliptical particles with surface depressions. These particles have already fully shrunk, while the alloy steel shot with insufficient shrinkage has a better structure, but the structure is not dense and has shrinkage holes. Internal defects such as shrinkage.
From the perspective of usage effect, the rounder the better. Usually used in the field of cleaning, the cleaning efficiency of high roundness steel balls is lower than that of steel balls with good shrinkage. Polishing energy E=1/2mv2, good shrinkage rate due to poor roundness, and dense structure. Therefore, similarly, if the volume and mass of the alloy steel shot are large, the impact energy is high, and it is not easy to fracture; On the contrary, steel balls with good roundness are not dense, have small particle mass, low kinetic energy, and are prone to breakage.
Editor: Lena