一、前言金属表面喷射处理是机械制造中的一种加工工艺。在一定条件下,对某些零件进行表面喷射处理,能够收到良好的工艺效果和使用效果。例如,对受交变弯曲负荷、交变扭转负荷及交变剪切负荷的零件进行表面喷射硬化处理,就能使表面层在冷硬时产生与工作时的拉应力方向相反的压应力,从而大大提高零件的疲劳强度,延长使用寿命。不少资料表明,用此法处理受上述工作负荷的钢质零件,其疲劳强 First, the foreword Metal surface spray processing is a manufacturing process in machinery. Under certain conditions, some parts of the surface spray treatment, can receive a good process results and the use of results. For example, by subjecting parts subjected to an alternating bending load, an alternating torsional load and an alternating shear load to surface-hardening, it is possible to cause a compressive stress in the direction opposite to the tensile stress at work in the surface layer when it is chilled Greatly improve the fatigue strength of parts, to extend the service life. A lot of information shows that using this method to deal with the above-mentioned work load of steel parts, fatigue