提高20CrMnTi钢模具表面渗碳速度工艺研究  

The process research of increasing surface carburizing speed of 20CrMnTi steel die

作　　者：陆元三 

机构地区：[1]湖南财经工业职业技术学院机电工程系,湖南衡阳421008

出　　处：《模具技术》2016年第5期60-63,共4页Die and Mould Technology

基　　金：湖南省教育厅2015年科学研究项目(15C0192)

摘　　要：20CrMnTi的常规电炉渗碳方法生产周期长,生产效率低。为了提高20CrMnTi渗碳处理速度,开展工艺研究,制定了3种渗碳处理试验工艺方案进行试验。在试验结果比较分析的基础上,对工艺方案进一步优化,得到了流动粒子中的快速渗碳工艺方案:950渗碳2.5h,经650高温回火3h后,在820温度下保温20min,在20冷态流动粒子中淬火,最后经170低温回火2h。经实践证明,该工艺效果好,提高了生产率,降低了成本。Conventional furnace carburizing of 20CrMnTi has long production cycle and low production efficiency. In order to improve the carburizing speed of the 20CrMnTi, the pro- cessing research was carried out. Three kinds of test carburizing process have been devel- oped. On the basis of the test results, the process program was optimized to get the carburi- zing program of fast particles flowing. 950 ℃ carburizing for 2.5 h; then high temperature tempering at 650 ℃ for 3 h, heating to 820 ℃ holding for 20 rain, after which quenching at cold particles flow of 20 ℃ ; finally, tempering at 170 ℃ for 2 h. Practice has proved that the process is effective, and can improve productivity and reduce costs.

关 键 词：20CRMNTI钢 表面渗碳 工艺 速度 

分 类 号：TG156[金属学及工艺—热处理]