理化检验-物理分册2025，Vol.61Issue(1)：25-29,5.DOI:10.11973/lhjy-wl230346
柔性砂带磨削Q370R钢焊接接头组织结构与应力状态
Microstructure and stress state of Q370R steel welded joint by flexible abrasive belt grinding
任绪凯 1杜锡勇 2余焕伟 2陈仙凤 2宋剑华 2王国彪3
作者信息
- 1. 天津大学 机械工程学院,天津 300073||绍兴市特种设备检测院,绍兴 312071
- 2. 绍兴市特种设备检测院,绍兴 312071||绍兴市特种设备智能检测与评价重点实验室,绍兴 312071
- 3. 天津大学 机械工程学院,天津 300073
- 折叠
摘要
Abstract
The effects of flexible abrasive belt grinding on the microstructure and stress state of Q370R steel welded joints were analyzed by X-ray diffraction technology,diffraction line analysis method and stress measurement method,and compared with the welded and heat treated Q370R steel welded joint samples.The results show that heat treatment could effectively eliminate the welding residual tensile stress,but had no significant effect on the microstructure.When the weld allowance was removed by flexible abrasive belt grinding,a plastic deformation layer with a thickness of about 140 μm was formed on the surface of the joint.The microstructure of the deformed layer was composed of a tensile stress layer with a thickness of 25 μm and a compressive stress layer with a thickness of 115 μm.The nano-to-micron domain size and micro-strain were distributed in a gradient manner.关键词
Q370R钢/焊接接头/砂带磨削/组织结构/残余拉应力/晶畴Key words
Q370R steel/welded joint/abrasive belt grinding/organizational structure/residual tensile stress/crystal domain分类
通用工业技术引用本文复制引用
任绪凯,杜锡勇,余焕伟,陈仙凤,宋剑华,王国彪..柔性砂带磨削Q370R钢焊接接头组织结构与应力状态[J].理化检验-物理分册,2025,61(1):25-29,5.
