江苏大学学报（自然科学版）2025，Vol.46Issue(4)：409-416,8.DOI:10.3969/j.issn.1671-7775.2025.04.006
盾构主轴承滚道表面激光相变硬化工艺参数研究
Process parameters of laser transformation hardening on raceway surface of shield main bearing
摘要
Abstract
To improve the anti-wear and anti-fatigue ability of raceway surface of the shield main bearing,SYS WELD software was used to carry out the numerical simulation of laser transformation hardening under different parameters for the shield main bearing raceway material of 42CrMo steel.The effects of laser power,scanning speed and spot size on the phase transformation of 42CrMo steel for the raceway material of shield main bearing and the depth of hardened layer were investigated.The results show that with the increasing of laser power,the decreasing of laser scanning speed or the decreasing of laser spot size,the depth of raceway hardened layer is increased.When the laser power is 2 250 W with scanning speed of 20 mm/s and spot length of 5 mm,the depth of the hardened layer of the raceway can reach 1.08 mm,and the hardened layer is relatively uniform.关键词
盾构主轴承/滚道表面/激光相变硬化/工艺参数/数值仿真Key words
shield main bearing/raceway surface/laser transformation hardening/process parameter/numerical simulation分类
矿业与冶金引用本文复制引用
王匀,丁乙,何培瑜,陈利明,马金辉..盾构主轴承滚道表面激光相变硬化工艺参数研究[J].江苏大学学报（自然科学版）,2025,46(4):409-416,8.基金项目
国家自然科学基金资助项目(52105259) （52105259）
扬州市重点研发计划项目(SCY2022010022) （SCY2022010022）
中国博士后科学基金资助项目(2020M671354,2022M721371) （2020M671354,2022M721371）
