W9Mo3Cr4V高速钢钻头深冷处理工艺研究  

The research on process of deep cryogenic treatment for W9Mo3Cr4V HSS drill

作　　者：阎红娟[1] 徐宏海[1] 刘东[1] 

机构地区：[1]北方工业大学机电工程学院,北京100041

出　　处：《机械设计与制造》2010年第7期168-169,共2页Machinery Design & Manufacture

基　　金：北京市教委科技发展计划重点资助项目(KZ200510009007)

摘　　要：采用正交试验法对W9Mo3Cr4V高速钢深冷处理工艺进行了研究,分析了不同工艺参数对钻头性能的影响,并使用电子扫描显微镜观察了深冷处理前后的显微组织。结果表明,深冷温度对钻头性能影响最大,其次是深冷保温时间,最后是冷却速度。深冷处理促使残余奥氏体向马氏体转变,并在马氏体基体上析出弥散分布的微细碳化物,从而提高了钻头的硬度和耐磨性。It studies the deep cryogenic treatment process of W9Mo3Cr4V HSS by orthogonal ex-periment method,and analyses the effects of various cryogenic treatment process parameters on mechanical properties,and observes microstructure before and after deep cryogenic treatment by the SEM.The results shows that the effect of soaking temperature on the properties of drill is strongest,the soaking time and the cooling rate is secondary and tertiary.Deep cryogenic treatment enhances the transformation of austenite to martensite,and distributable carbides are precipitated from martensite,so deep cryogenic treatment in-crease hardness and enhance wear resistance of the twist drill.

关 键 词：深冷处理 高速钢 正交试验 马氏体 耐磨性 

分 类 号：TH16[机械工程—机械制造及自动化] TG156.91[金属学及工艺—热处理]