20CrMnMo钢渗碳后端淬试验的硬度分析  

Hardness analysis on carburized 20CrMnMo steel by Jominy test

作　　者：王鑫 李宝奎 顾敏 李双喜 Wang Xin;Li Baokui;Gu Min;Li Shuangxi(Zhengzhou Research Institute of Mechanical Engineering Co. ,Ltd. ,Zhengzhou Henan 450001 ,China;School of Mechanical Engineering,Henan University of Engineering,Zhengzhou Henan 451191 ,China)

机构地区：[1]郑州机械研究所有限公司,河南郑州450001 [2]河南工程学院机械工程学院,河南郑州451191

出　　处：《金属热处理》2019年第5期210-214,共5页Heat Treatment of Metals

摘　　要：运用端淬曲线模型对渗碳端淬试样的硬度场进行了模拟分析,首先拟合出不同碳含量下的端淬硬度曲线,然后通过温度场的分析得到特定温度区间的冷却曲线,最终实现了渗碳端淬试样硬度的分层模拟和云图显示。通过与试验结果对比,硬度分析结果具有较好的准确性,尤其是在端淬距离较小时,其余位置最大误差在5. 6 HRC以内。By using the end quenching curve model,the hardness field of carburized end quenching specimen is simulated and analyzed,first the end quenching hardness curve under different carbon content is fitted,then the cooling curve of specific temperature zone is obtained by the analysis of temperature field,and finally,the layered simulation and cloud map display of the hardness of carburized end quenching specimen are realized.Compared with actual quenching test results,the hardness analysis results have good accuracy,especially when the distance from the end of Jominy specimen is smaller,maximum error at the remaining positions of the specimen is within 5.6 HRC.

关 键 词：渗碳 端淬试验 端淬曲线 温度场 分层模拟 

分 类 号：TG156.8[金属学及工艺—热处理]