Steel shot and steel grit for steel surface treatment?

　　Shot blasting is a method of strengthening the surface of parts. It also has the functions of finishing and deburring. Shot blasting is often used to clean the surface of castings or parts that need surface strengthening treatment. Shot blasting cannot be used for surface treatment of thin parts with small thickness. In the steel surface treatment process, a high-speed rotating impeller is used to throw steel shot, steel grit or iron shot to hit the surface of parts at high speed to remove the oxide layer on the surface of parts. At the same time, steel shot or iron shot hits the surface of parts at high speed, causing the lattice on the surface of parts to be distorted and deformed, increasing the surface hardness. Generally, steel shot and steel grit have regular shapes, and several blasting heads are up and down, left and right together, with high efficiency and low pollution. Steel shot and steel grit can both clean and decontaminate the workpiece. The purpose is to prepare for the next process, that is, to ensure the roughness requirements of the next process, and some are for surface consistency.

　　Steel shot has a strengthening effect on the workpiece, while steel grit is not obvious. Steel shot treatment is used in almost most areas of machinery, such as ship repair and construction, auto parts, aircraft parts, gun and tank surfaces, bridges, steel structures, steel plates, pipes, etc.