理化检验-物理分册2024，Vol.60Issue(5)：54-56,60,4.DOI:10.11973/lhjy-wl202405014
Q355B宽带钢表面开裂原因
Reason for surface cracking of Q355B broadband steel
孙雪娇 1方金林 1董丙成1
作者信息
- 1. 山东钢铁股份有限公司 莱芜分公司,济南 271104
- 折叠
摘要
Abstract
Cracking occurred on the edge surface of a Q355B steel.The cause of crack formation was analyzed using methods such as macroscopic observation,chemical composition analysis,metallographic examination,scanning electron microscopy and energy spectrum analysis.The results show that surface cracks on the steel plate occurred during the continuous casting process,and there was an accumulation of harmful elements such as arsenic and copper near the cracks.Harmful elements such as arsenic and copper formed low melting point enriched phases,which deteriorated the plasticity of the steel plate and disrupted the continuity of the steel matrix.Under the action of tensile stress,the surface of the steel plate cracked.关键词
Q355B钢/表面裂纹/连铸板坯/有害元素/脱碳Key words
Q355B steel/surface crack/continuous casting slab/harmful element/decarbonization引用本文复制引用
孙雪娇,方金林,董丙成..Q355B宽带钢表面开裂原因[J].理化检验-物理分册,2024,60(5):54-56,60,4.
