27MnCr5钢汽车半轴齿轮等温退火工艺改进研究  

Improvement of Isothermal Annealing Process for 27MnCr5 Steel Car Semi-axle Gear

作　　者：李卫民[1] LI Weimin(Department of Mechanical and Electronic,Taizhou Polytechnical Institute,Taizhou 225300,China)

机构地区：[1]泰州职业技术学院机电技术学院,江苏泰州225300

出　　处：《铸造技术》2018年第9期2102-2105,共4页Foundry Technology

基　　金：2017年度泰州职业技术学院院级科研项目(TZYKYZD-17-1)

摘　　要：研究了脱碳层深度对27MnCr5钢汽车半轴齿轮渗碳淬火回火后容易破碎现象的影响。结果表明,采用脉冲真空电阻炉进行等温退火,使用充氮换气的方法来取代甲醇保护气氛介质,能有效控制脱碳层深度,齿轮断裂的现象得到了有效解决。The effect of decarbonization depth on the cracking phenomenon of 27MnCr5 steel automobile semi-axle gear after carburizing, quenching and tempering was studied. The results show that the pulse vacuum resistance furnace is used for isothermal annealing, the depth of decarbonization layer can be effectively controlled by using nitrogen-filled gas exchange method instead of methanol to protect atmosphere medium. The phenomenon of gear fracture has been effectively solved.

关 键 词：27MnCr5钢 汽车半轴齿轮 等温退火工艺 脱碳层 

分 类 号：TG156[金属学及工艺—热处理] TG113[金属学及工艺—金属学]