20钢渗碳工艺  

Carburization Process for 20 Steel

作　　者：宋劲松[1] 徐晓东[1] 田野[1] 卞豪亮 苏浩男 张晓飞 

机构地区：[1]承德石油高等专科学校工业技术中心,河北承德067000 [2]承德江钻石油机械有限责任公司,河北承德067000

出　　处：《承德石油高等专科学校学报》2017年第4期44-47,共4页Journal of Chengde Petroleum College

摘　　要：通过金相显微镜分析及显微硬度的测试研究了20钢的渗碳工艺及力学性能,结果表明:随着渗碳时间的延长,渗碳层的厚度逐渐增加,渗碳过程符合Fick第二定律;经渗碳处理工件表面的显微硬度是未经渗碳处理的2.5倍,达到442.4 HV0.3,显著地提高了20钢表面的强度。The carburization process and mechanical proprieties of 20 steel were studied by metallo- graphic microscope and microhardness. The results show that the thickness of layer were gradually increasing with the time, carburizing process conforms to the Fick second law. After carburizing treatment the microhardness on the surface of the workpiece is 2.5 times than without carburizing treatment. The microhardness can be up to 442.4 HV. The strength of the surface of 20 steel were improved significantly.

关 键 词：20钢 渗碳处理 力学性能 显微组织 

分 类 号：TG156[金属学及工艺—热处理]