马钢1号镀锌线麻点缺陷分析和预防措施
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摘要
马钢1号热镀锌线曾在一段时间内连续出现麻点缺陷,严重影响了生产过程稳定和产品表面质量。麻点呈现两种形貌,分别是点状周期性麻点以及片状密集型麻点。在对麻点产生原因进行了分析的基础上,通过对清洗段清洗工艺参数优化、退火炉内气氛、油污控制、带钢入锌锅温度优化、添加锌锭和捞渣过程的控制,使1号镀锌线麻点缺陷得到有效控制。
In a period of time there were lots of pockmarks on the surface of galvanized sheet in the first hot-dip galvanizing line of Masteel,which seriously affected the stability of production process and surface quality of products.The pockmarks showed two kinds of morphologieswhich were punctate periodic pockmarks and sheet dense pockmarks,respectively.On the basis of the analysis of the causes of pockmarks,the pockmarks were effectively controlled by optimizingthe parameters of cleaning process,controlling the atmosphere and oil pollution of annealing furnace,optimizing the strips temperatureat the entrance of zinc pot,and controlling the process ofzinc ingots addition and zinc dross catching.
In a period of time there were lots of pockmarks on the surface of galvanized sheet in the first hot-dip galvanizing line of Masteel,which seriously affected the stability of production process and surface quality of products.The pockmarks showed two kinds of morphologieswhich were punctate periodic pockmarks and sheet dense pockmarks,respectively.On the basis of the analysis of the causes of pockmarks,the pockmarks were effectively controlled by optimizingthe parameters of cleaning process,controlling the atmosphere and oil pollution of annealing furnace,optimizing the strips temperatureat the entrance of zinc pot,and controlling the process ofzinc ingots addition and zinc dross catching.
引文
1李九岭.带钢连续热镀锌.3版.北京:冶金工业出版社,2010:1-3.
2 Chen F,Patil R.An in-depth analysis of various subtle coating defects of the 2000’s//Galvatech’04Conference Proceedings,2004:1055-1066.
3 郭海涛,刘建国,韩志刚,等.光整锌花镀锌板麻点缺陷分析.矿冶,2013,22(s1):92-94.
4 王春喜,唐琪.连续热镀锌板脱锌原因分析与对策.金属材料与冶金工程,2015(6):44-48.
5 李亚东,江社明,杨兴亮,等.热镀锌钢板镀层表面麻点缺陷的产生原因及预防措施.腐蚀与防护,2009,30(12):917-920.
6 Qingsheng L,Lu W.Analysis of causes and influence factors of small black spot defects in hot-dip galvanized pure Zn products.Bao7teel Technical Research,2016,10(2):7-13.
7 章一樊.提高镀层粘附性的探讨.安徽冶金,2006(4):45-48.
2 Chen F,Patil R.An in-depth analysis of various subtle coating defects of the 2000’s//Galvatech’04Conference Proceedings,2004:1055-1066.
3 郭海涛,刘建国,韩志刚,等.光整锌花镀锌板麻点缺陷分析.矿冶,2013,22(s1):92-94.
4 王春喜,唐琪.连续热镀锌板脱锌原因分析与对策.金属材料与冶金工程,2015(6):44-48.
5 李亚东,江社明,杨兴亮,等.热镀锌钢板镀层表面麻点缺陷的产生原因及预防措施.腐蚀与防护,2009,30(12):917-920.
6 Qingsheng L,Lu W.Analysis of causes and influence factors of small black spot defects in hot-dip galvanized pure Zn products.Bao7teel Technical Research,2016,10(2):7-13.
7 章一樊.提高镀层粘附性的探讨.安徽冶金,2006(4):45-48.