At present, the high-carbon cast steel shot on the market is divided into primary quenching and secondary quenching. It is difficult to distinguish from the composition, hardness and metallographic structure. However, the secondary quenched steel shot has fine grain and high fatigue life.
Since the steel shot has not undergone the process of heating and quenching, the Fe3O4 oxide film formed on the surface is relatively thin, so it looks very bright; while the steel shot that has undergone secondary quenching treatment is heated and During the quenching process, the Fe3O4 film on the surface becomes thicker, does not reflect light, and does not look bright.
Therefore, the appearance of cast steel shot is not as bright as possible, but should pay attention to whether it has undergone secondary quenching heat treatment
Steel shot is widely used for descaling and rust removal treatment
How are steel shot and grit used to treat steel surfaces?
Steel shot is widely used for descaling and rust removal treatment
What are the unique characteristics of steel shot?
