摘要
某热轧板材表面产生了少见的马蹄印形黑斑及其他表面缺陷。通过对其与同批次铸坯缺陷的对应关系研究,分析了该类缺陷的产生和演变行为,进一步追溯了此类缺陷的演变过程及规律。结果表明:热轧板材马蹄印形黑斑缺陷主要是铸坯内存在的中间裂纹和中心疏松缺陷逐步轧制到板材表面所致;而轧材上的两种翘皮缺陷则是保护渣卷渣和大尺寸硅铝酸盐夹杂遗传演变所为。
The surface of a produced horseshoe black spots and other surface defects.Through the study of the corresponding relationship between the hot rolled sheet and the same batch billet,the generation and evolution behavior of defects were analyzed,and the evolution process and law of the defects were further traced back.The results show that the defects of horseshoe black spot in hot rolled sheet are mainly caused by rolling of the middle cracks and central center porosity defects in the casting blank.The genetic evolution of protective slag and large size aluminosilicate inclusions is the reason for the two kinds of skin defects.
作者
李秋平
佟胜文
李海滨
张庆军
朱立光
LI Qiuping;TONG Shengwen;LI Haibin;ZHANG Qingjun;ZHU Liguang(Hebei High Quality Steel Continuous Casting Engineering Technology Research Center,College of Metallurgy and Energy,North China University of Science and Technology,Tangshan 063210,China;Chifeng Yuanlian Iron and Steel Co.,Ltd.,Chifeng 024000,China;College of Material,Hebei University of Science and Technology,Shijiazhuang 050000,China)
出处
《热加工工艺》
北大核心
2022年第1期161-164,共4页
Hot Working Technology
基金
国家自然科学基金资助项目(51874137)
国家自然科学基金资助项目(51574106)
河北省自然科学基金资助项目(E2017209223)。
关键词
马蹄印形黑斑
中间裂纹
翘皮缺陷
遗传演变
horseshoe black spot
intermediate crack
warping defect
genetic evolution
