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%。 Different temperatures were used to carburize the TL VW4220 gear steel, and the effect of treatment temperature on the carbon content, microstructure, wear resistance and corrosion resistance of the carburized layer was analyzed. The results show that when the carburizing temperature increases from 600 ℃ to 1000 ℃, the carbon content, wear resistance and corrosion resistance of the carburized layer of test steel decrease first and then increase, and the optimal carburizing temperature is 950 ℃. Compared with the carburizing at 600 ℃, the carbon content of the test steel with the infiltrating depth of 2.5μm increased by 12% and 5% at 950 and 1000 ℃, respectively. When the depth of infiltration was 10.0μm, the content of carbon increased 10%, 1% and wear volume decreased by 80% and 69% respectively. The mass loss rate in 5% NaCl solution after 100 h corrosion decreased by 7.5% and 5.9% respectively.