理化检验-物理分册2024，Vol.60Issue(3)：49-51,55,4.DOI:10.11973/lhjy-wl202403012
40Cr钢棒材剪切开裂原因
Reason for shear cracking of 40Cr steel bars
徐政新 1杨娥 1周杨 1曹广1
作者信息
- 1. 大冶特殊钢股份有限公司 高品质特殊钢湖北省重点实验室, 黄石 435001
- 折叠
摘要
Abstract
A certain company produced 40Cr steel bars that cracked during the cold shear cutting process.The cause of cracking in the bar was analyzed using methods such as macroscopic observation,chemical composition analysis,scanning electron microscopy analysis and metallographic examination.The results show that there was a localized work hardening layer on the surface of the bar,which led to shear cracking of the bar.The reason for the formation of work hardening layer was improper straightening and grinding wheel peeling process during the finishing process of the bar.关键词
40Cr钢棒材/剪切开裂/加工硬化/矫直/加工硬化组织Key words
40Cr steel bar/shear cracking/work hardening/straightening/work hardening structure分类
通用工业技术引用本文复制引用
徐政新,杨娥,周杨,曹广..40Cr钢棒材剪切开裂原因[J].理化检验-物理分册,2024,60(3):49-51,55,4.
