Application Of Shot Peening Technology

Shot peening is used to remove oxide scale, rust, molding sand, and old paint film on medium and large metal products with a thickness of no less than 2mm or without requiring accurate dimensions and contours, as well as castings and forgings. It is a cleaning method before surface coating (plating). Widely used in large shipyards, heavy machinery factories, automobile factories, etc.
Shot peening strengthening is a cold treatment process widely used to improve the fatigue resistance of metal parts that have been in service for a long time under high stress conditions, such as aircraft engine compressor blades, fuselage structural components, automotive transmission system components, etc.
Shot peening strengthening is the process of rapidly and continuously spraying countless small circular media called steel balls into the surface of a part under complete control, resulting in a residual compressive stress layer on the surface. Because when each steel shot hits a metal part, it is like a miniature rod hitting the surface, creating small indentations or depressions. To form a depression, the surface of the metal must undergo stretching. Under the surface layer, compressed grains attempt to restore the surface to its original shape, resulting in a hemisphere under high compressive force. Countless depressions overlap to form a uniform residual compressive stress layer. Ultimately, under the protection of the compressive stress layer, the parts greatly improve their fatigue strength and extend their safe working life.