高速钢工具的冷处理是三十年代后期提出来的一种热处理工艺,这种工艺在七十年代又取得了一些进展。按传统的概念,冷处理的目的是将淬火钢件冷却到零下温度(一般为-60～-70℃,使钢内的残余奥氏体转变为马氏体。过去工业上采用的高速钢的冷处理主要应用于缩短热处理生产周期(即用淬火+冷处理+一次回火来代替淬火+三次回火)。除此之外,冷处理亦用 Cold-working high-speed steel tools was proposed in the late thirties a heat treatment process, this process has made some progress in the seventies. According to the traditional concept, the purpose of cold treatment is to quench the quenched steel to a sub-zero temperature (typically -60 ~ -70 ℃, so that the residual austenite steel into martensite. Industrial use in the past, the high-speed steel cold treatment Mainly used to shorten the heat treatment production cycle (ie quenching + cold treatment + a tempering instead of quenching + tempering.) In addition, the cold treatment is also used