W6Mo5Cr4V2高速钢钻头深冷处理工艺试验研究  

Experiment of process on deep cryogenic treatment for W6Mo5Cr4V2 HSS drill

作　　者：阎红娟[1] 徐宏海[1] 李凯[1] 

机构地区：[1]北方工业大学机电工程学院,北京100144

出　　处：《现代制造工程》2010年第9期81-83,共3页Modern Manufacturing Engineering

摘　　要：采用正交试验方法研究W6Mo5Cr4V2高速钢钻头的深冷处理工艺。分析不同深冷处理工艺对材料力学性能的影响,使用电子扫描显微镜观察材料显微组织。试验结果表明,深冷温度是影响深冷效果的最主要因素,深冷保温时间和回火温度次之。深冷处理促使残留奥氏体向马氏体转变,在马氏体基体上析出碳化物颗粒,这是钻头硬度和耐磨性提高的主要原因。The deep cryogenic treatment process of W6Mo5Cr4V2 High Speed Steel（HSS）was studied by orthogonal experiment method.Analysed the effect of various cryogenic treatment process parameters on mechanical properties,and observed microstructure before and after deep cryogenic treatment by the scanning electron microscope.The results show that the first factor affecting deep cryogenic treatment is soaking temperature,the second one is soaking time and the third one is tempering temperature.Deep cryogenic treatment enhances the transformation of austenite tomartensite,and distributable carbides are precipitated from martensite.Deep cryogenic treatment increases hardness and enhances 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：TG156.91[金属学及工艺—热处理]