摘要
对热镀锌白斑缺陷成因进行分析,利用扫描电镜、能谱分析、辉光放电光谱仪分析白斑区域与正常区域锌层表面,排查机组相关因素,发现板温计冷却水泄漏,导致基板表面局部氧化,还原后表面状态改变,锌层结晶织构变化,对应缺陷区域表面枝晶减少,产生白斑缺陷;针对该缺陷提出具体措施,有效控制白斑缺陷发生。
The causes of white spot defects in hot-dip galvanizing are analyzed in this paper.The surface of zinc layer in white spot area and normal area are analyzed by SEM,EDS and GDS,and the relevant factors of the unit are checked.The white spot defect is caused by the leakage of cooling water from the plate thermometer,which results in oxidation on the surface of the substrate.After reduction,the surface state changes,the crystal texture of the zinc layer changes,and the surface dendrite of the defect area decreases.Concrete control methods are proposed accordingly,and thus the white spot defect is effectively controlled.
作者
张伟浩
李金
陈一鸣
苏衍战
周诗正
Zhang Weihao;Li Jin;Chen Yiming;Su Yanzhan;Zhou Shizheng(Wuhan Iron & Steel Co., Ltd., Wuhan 430080, Hubei;R&D Center of Wuhan Iron & Steel Co., Ltd, Wuhan 430080, Hubei)
出处
《武汉工程职业技术学院学报》
2021年第4期9-12,共4页
Journal of Wuhan Engineering Institute
关键词
IF钢
白斑
热镀锌
枝晶
表面质量
IF steel
white spot
hot-dip galvanizing
dendrite
surface quality
