42CrMo钢内齿圈淬火开裂分析  

Analysis on Cracking of 42CrMo Steel Inner Ring Gear

作　　者：刘辉 LIU Hui(Taier Heavy Industry Co., Ltd., Ma＇anshan 243000, Anhui Chin)

机构地区：[1]泰尔重工股份有限公司,安徽马鞍山243000

出　　处：《热处理》2017年第1期55-57,共3页Heat Treatment

摘　　要：42CrMo钢经调质处理后,发现有26%的工件发生开裂。分析表明,内齿圈的开裂主要是由于法兰盘与外表面之间的夹角过小所至。预防内齿圈淬火开裂的措施为:适当放大该夹角,降低淬火温度及提高淬火剂浓度。26% of the inner ring gear made of 42CrMo steel was found cracked after being hardened and high tempered. It is seen from the analysis that the of cracking of the inner ring gear is mainly attributed to excessively small included angle between its flange plate and outer surface. The measures preventing the inner ring gear from cracking during the quenching are enlargement austenitizing temperature and increase in quenchant of the included angle, and appropriate both reduction in concentration.

关 键 词：F2000淬火剂 42CRMO钢 淬火 夹角 

分 类 号：TG115.2[金属学及工艺—物理冶金]