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研究证明,等离子弧可以用于金属表面硬化处理。等离子弧电流、等离子弧长度、等离子弧工作气体流量、处理速度、等离子发生器喷嘴孔道直径和形状等工艺参数可改变硬化宽度和深度。在硬化处理过程中,为防止金属表面熔化,应采用较低的热输入量。采用较低的能量密度和较慢的处理速度可增加硬化深度。采用椭圆形喷嘴孔道或采用横向磁场可增加硬化宽度。等离子弧硬化处理工艺的经济效益高于激光淬火工艺和感应淬火工艺。
Research shows that plasma arc can be used for metal surface hardening. Plasma arc current, plasma arc length, plasma arc working gas flow rate, processing speed, plasma generator nozzle orifice diameter and shape and other process parameters can change the curing width and depth. In the hardening process, in order to prevent the metal surface melting, should use a lower heat input. Hardening depth can be increased with lower energy density and slower processing speed. Elliptical nozzle orifice or horizontal magnetic field can be used to increase the width of hardening. The plasma arc hardening process is more economical than laser quenching and induction hardening.