42CrMo钢大直径长轴件的淬火冷却工艺  

Quenching process for 42CrMo steel large diameter and long shaft

作　　者：管敏超 李振华 左训伟[2] 陈乃录[2] 

机构地区：[1]海天塑机集团有限公司,浙江宁波315821 [2]上海交通大学材料科学与工程学院,上海200240

出　　处：《金属热处理》2015年第1期74-78,共5页Heat Treatment of Metals

摘　　要：针对大尺寸42Cr Mo钢轴类件的淬火冷却存在油淬性能低于要求,水淬易产生开裂的问题,本研究将水-空交替控时淬火冷却技术和配套的设备,成功应用于直径510 mm、长度9500 mm的42Cr Mo钢轴类件的淬火冷却。结果表明,采用水-空交替控时淬火冷却工艺与设备处理工件的硬化层深度达30 mm,近表面基本上为马氏体组织,并且表面硬度偏差为±1.4 HRC,零件均匀性得到提高。For quenching of 42 Cr Mo steel shaft in a large dimension,the presence of oil quenching below the required performance and easy to produce water quenching cracking problem,water-air alternately control time quenching technologies and appropriate equipment were successfully applied quenching of 42 Cr Mo steel shaft in diameter 510 mm and length 9500 mm. The results show that by using the water-air alternately control time quenching process and equipment the hardened layer depth of the part is 30 mm,in near surface is a basic martensite is,and the deviation of the surface hardness is ± 1. 4 HRC,parts uniformity is improved.

关 键 词：水淬 控时淬火冷却 42CRMO钢 大直径轴 

分 类 号：TG156.3[金属学及工艺—热处理]