GCr15球化退火材料表层片状珠光体的成因及危害  

Cause and Harm of Lamellar Pearlite in Surface Layer of GCr15 Spheroidizing-Annealed

作　　者：袁士春 张艳 王天斌 梁华[2] 诸美娟 YUAN Shichun;ZHANG Yan;WANG Tianbin;LIANG Hua;ZHU Meijuan(Wuxi Kaiming Metals Products Co.,Ltd.,Wuxi 214000,China;Luoyang Bearing Research Institute Co.,Ltd.,Luoyang 471039,China;Wuxi Xinhuang Machinery Co.,Ltd.,Wuxi 214000,China)

机构地区：[1]无锡凯明金属制品有限公司,江苏无锡214000 [2]洛阳轴承研究所有限公司,河南洛阳471039 [3]无锡鑫皇机械有限公司,江苏无锡214000

出　　处：《轴承》2021年第3期62-66,共5页Bearing

摘　　要：根据相关热处理原理并结合工作实践,阐述了导致GCr15轴承钢材料退火后表层出现片状珠光体组织的3种主要因素,分别为原材料脱碳、冷速过快和加热冲温,并分析了不同因素条件下出现的片状珠光体组织对材料性能的影响和危害。提出了准确判定脱碳的方法,即珠光体的分布状态、深度、片间距有明显变化,以期为GCr15轴承钢的实际生产和检验提供参考。Based on relevant heat treatment principles and working practices,three main factors leading to lamellar pearlite structure in surface layer of GCr15 bearing steel after annealing are classified as decarburization of raw materials,excessive cooling rate and heating,and the influence and harm of lamellar pearlite structure on material properties under different factor conditions is analyzed.The method for accurate determination of decarburization is that the distribution state,depth and interlamellar spacing have obvious change,providing reference for actual production and inspection of GCr15 bearing steel.

关 键 词：滚动轴承 高碳铬轴承钢 球化退火 片状珠光体 表面缺陷 

分 类 号：TH133.33[机械工程—机械制造及自动化] TG115.21[金属学及工艺—物理冶金]