热处理技术对钢蜗轮副用材料18Cr2Ni4WA钢滑动磨损行为的影响  

Study on Effects of Heat Treatment Processes on Wear Behavior of 18Cr2Ni4WA Steel

作　　者：李助军[1,2] 朱繁康[3] 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640 [2]广州铁路职业技术学院机械与电子学院,广东广州510430 [3]华南理工大学科技实业总厂,广东广州510640

出　　处：《润滑与密封》2011年第3期65-68,共4页Lubrication Engineering

摘　　要：在SRVⅣ微动磨损试验机上考察不同热处理技术对18Cr2Ni4WA钢磨损行为的影响,并分析磨损机制。在试验条件下,渗碳激光复合处理试样的维氏硬度约为HV760,耐磨性最好,其次为渗碳、低温回火试样和淬火、低温回火试样;正火、高温回火试样的金相组织为回火索氏体,淬火、低温回火试样的金相组织为板条状回火马氏体和残留奥氏体,渗碳、低温回火试样和渗碳、激光表面淬火试样的显微组织均为针状马氏体、残留奥氏体和颗粒渗碳体,且渗碳激光复合处理试样的金相组织较为均匀、细小。Wear behavior of 18Cr2Ni4WA steel with different heat treatment processes was studied on a SRV Ⅳoscillaring friction and wear tester, the wear mechanism was discussed. The results show that the carburizing and laser quenching sample, whose hardness is about HV760, has best wear resistance performance, followed by carburizing and low temperature tempering sample, quenching and low temperature tempering sample. Microstructure of normalizing and high temperature tempering sample is tempered sorbite. Microstructure of quenching and low temperature tempering sample is lath martensite and retained austenite. Microstructure of carburizing and low temperature tempering sample and carburizing and laser quenching sample is acicular martensite, retained austenite treatment, the microstructure of the sample is more uniform and cementite globules. After carburizing and laser quenching and fine.

关 键 词：钢蜗轮 18CR2NI4WA钢 磨损机制 

分 类 号：TH117.1[机械工程—机械设计及理论]