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Steel Belt: Shot Peening
Shot Peening is a modern solution for deformed steel belts. The shot peening process is quick and cost effective. Compared with other methods the shot peening is lower cost and does not interrupt daily production.
== Shot peening process ==
Shot peening is a solution process for the deformed steel belt in which the surface of the belt is hammered with small spherical stainless steel or carbon steel balls called peening shot. Every single small piece of shots hitting the steel belts functions as a small peening hammer, transmitting a small indentation or dimple on the steel belt surface. In order for the indentation to be formed, the steel belt surface layer must yield in tension. The compressed garins help to recover the surface to its real surface (original surface) producing a hemisphere of cold-worked metal extremely stressed in compression. Overlapping indentation create a homogeneous layer of residual compressive stress. It is well known that cracks will not lead up nor propagate in a compressible stressed zone. Because nearly all fatigue and stress corrosion failures create at the surface of a part, compressive stresses generate by shot peening provide very important increases in life time.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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