理化检验-物理分册2025，Vol.61Issue(1)：41-44,4.DOI:10.11973/lhjy-wl230339
20CrMnTi热轧圆钢表面裂纹形成原因及改善
Causes and improvement of surface cracks on 20CrMnTi hot rolled round steel
戴柯明 1李辉成 1袁静 1许宝玉 1林俊1
作者信息
- 1. 中天钢铁集团有限公司,常州 213000
- 折叠
摘要
Abstract
Cracks appeared on the surface of a 20CrMnTi hot rolled round steel.The cracks were observed and analyzed by means of magnetic flux leakage detection,magnetic particle detection and metallographic examination.The results show that there were gray oxide particles inside the defect,and there was obvious decarburization around the defect.The transverse and longitudinal cracks on the surface of the slab were eliminated by improving the cooling conditions of continuous casting and adjusting the parameters of the mold flux,so as to solve the surface quality problem of 20CrMnTi hot rolled round steel.关键词
20CrMnTi钢/裂纹/表面质量/保护渣/脱碳/氧化物Key words
20CrMnTi steel/crack/surface quality/protective slag/decarbonization/oxide分类
矿业与冶金引用本文复制引用
戴柯明,李辉成,袁静,许宝玉,林俊..20CrMnTi热轧圆钢表面裂纹形成原因及改善[J].理化检验-物理分册,2025,61(1):41-44,4.
