深冷处理工艺及其在高速钢模具中的应用  

Cryogenic Treatment Technology and Its Application in High-Speed Steel Die

作　　者：李东和[1] 

机构地区：[1]辽宁省交通高等专科学校机电系,辽宁沈阳110122

出　　处：《沈阳师范大学学报（自然科学版）》2007年第3期333-334,共2页Journal of Shenyang Normal University:Natural Science Edition

摘　　要：指出了对高速钢采用-196℃液氮深冷处理可使组织发生明显变化，促使残留奥氏体向马氏体转变及超细碳化物的析出，从而使模具获得较佳的综合力学性能．高速钢模具的使用寿命，通过深冷处理后比常规热处理提高3倍以上，其使用价值非常显著．The cryogenic treatment in - 196℃ liquid nitrogen makes microstructure evolution in high-speed steel, precipitation of ultra-fine carbides and transformation of retained austenite into martensite. Consequently the die obtains superior mechanical properties. Further research shows that the service life of high-speed steel dies is increased to more than three times as compared with conventional heat treatment. Therefore, the application value of this is desirable.

关 键 词：高速钢 超细碳化物 残留奥氏体 模具 工艺过程 

分 类 号：TG142.45[一般工业技术—材料科学与工程]