SHOT-PEENING

Shot Peening of Siambrator Co., Ltd. satisfied all requirement of impact treatment such as uniform hardness and shape, consistency in size, high resistance to fracture, free of interior defects, etc.

Shot peening is a cold working process in which small spherical media called shot bombard the surface of a part. During the shot peening process, each piece of shot that strikes the material acts as a tiny peening hammer, imparting to the surface a small indentation or dimple. To create the dimple, the overlapping dimples from shot peening create a uniform layer of compressive stress at metal surfaces, shot peening provides considerable increases in part life. Compressive stresses are beneficial in increasing resistance to fatigue failures, corrosion, cracking, fretting, galling and erosion caused by cavitation.

Case of Actual Application

Die for cold forging (SKD11) 

About 6.0 times longer

Die for cold forging (YXR 3) 

About 5.0 times longer

Die for hot forging (SKD61) 

About 2.5 times longer

Die for cold forging (SKH 9) 

About 2.0 times longer

Die for cold forging (SKD61) 

About 2.0 times longer


SHOT-PEENING

Above data are for reference only, and are subject to differ in accordance with the processing parameters such as projection velocity, angle and the characteristics of peening shot.

Shot peening is used on gear parts, cams and camshafts, clutch springs, connecting rod, crankshafts, gearwheels, leaf and suspension springs, rock drills and turbine blades. It is also used in foundries for sand removal, decoring, descaling and surface finishing of castings such as engine blocks and heads.

Its descaling action can be used in the manufacturing of steel products such as strip, plates, sheets, wire and bar stock.