理化检验-物理分册2025，Vol.61Issue(12)：82-85,4.DOI:10.11973/lhjy-wl240224
冷轧镀锌带钢折弯开裂原因
Reasons for bending and cracking of cold-rolled galvanized strip steel
GUO Jianfeng 1WANG Zhanxiang 1ZHAO Haisheng1
作者信息
- 1. Technical Center,Shanxi Jianlong Industrial Co.,Ltd.,Yuncheng 043801,China
- 折叠
摘要
Abstract
After the bending test of galvanized strip steel in a certain cold rolling plant,the samples often cracked.The causes of cracking in bent specimens of different steel grades were analyzed using methods such as chemical composition analysis,mechanical property testing,and metallographic examination.The results show that the cracking reason of Q195C steel bending specimen was due to the high grade of A-series free cementite,Q355B steel bending specimen was due to severe banded structure,and Q420XG steel bending specimen was due to incomplete annealing of the structure.Methods such as component optimization,controlled cooling after hot rolling,and cold rolling annealing process adjustment could improve the bending performance of materials.关键词
冷轧镀锌带钢/折弯开裂/A系列游离渗碳体/带状组织/退火Key words
cold-rolled galvanized strip steel/bending and cracking/A-series free cementite/banded structure/annealing分类
通用工业技术引用本文复制引用
GUO Jianfeng,WANG Zhanxiang,ZHAO Haisheng..冷轧镀锌带钢折弯开裂原因[J].理化检验-物理分册,2025,61(12):82-85,4.
