渗碳温度对齿轮钢组织及磨损性能的影响  

Effects of Carburizing Temperature on Performance of Automobile Gears

作　　者：谭克诚[1] 高祯云[2] 

机构地区：[1]柳州铁道职业技术学院汽车技术学院,广西柳州545007 [2]浙江工业大学材料科学与工程学院,浙江杭州310000

出　　处：《铸造技术》2015年第3期641-643,共3页Foundry Technology

摘　　要：采用不同温度对TL VW4220齿轮钢进行渗碳处理,分析了处理温度对其渗层含碳量、显微组织、耐磨损性能和耐腐蚀性能的影响。结果表明,当渗碳温度从600℃提高至1 000℃,试验钢渗层含碳量、耐磨损性能和耐腐蚀性能均先减小后增大,最优渗碳温度为950℃。与600℃渗碳相比,950和1 000℃渗碳时,渗层深度为2.5μm的试验钢含碳量分别增加12%、5%;当渗层深度10.0μm时,含碳量分别增加10%、1%,磨损体积分别减少80%、69%;在5%Na Cl溶液中腐蚀100 h后的质量损失率分别减小7.5%、5.9%。The TL VW4220 steels used for gear were heat-treated under different carburizing temperatures, and the influence of carburizing temperatures on the carbon content of the carburizing layer, mierostructure, wear resistance and corrosion resistance of test steel were analyzed. The results show that, when increasing the carburizing temperatures from 600℃ to 1 000 ℃, the carbon content of the carburizing layer wear resistance and corrosion resistance first decrease and then increase with the optimized temperature at 950 ℃. Compared to carburizing at 600 ℃, carhurizing at 950℃ and 1 000℃ with penetration depth of 2.5 μ m, the carbon content of test steel is increased by 12% and 5%; the carbon content in the diffusion layer with the depth of 10.0 μ m is increased by 10% and 1%; the wear volume is decreased by 80% and 69%; the mass loss rate after 100 h corrosion in 5 wt% NaCl solution is reduced by 7.5% and 5.9 %, respectively,.

关 键 词：渗碳温度 汽车齿轮 TLVW4220钢 耐磨损性能 耐腐蚀性能 

分 类 号：TG156.81[金属学及工艺—热处理] TG142.1[金属学及工艺—金属学]