Analysis of Linear Defects of Cold-Rolled Galvanized Sheet

被引：4
|
作者：
Peng, Qichun [1 ]
Yang, Jinling [1 ]
Peng, Sheng [1 ]
Zhang, Xuehui [2 ]
Tang, Shuping [2 ]
Tian, Yisheng [2 ]
机构：
[1] Wuhan Univ Sci & Technol, Minist Educ, Key Lab Ferrous Met & Resources Utilizat, Wuhan 430081, Peoples R China
[2] Wuhan Iron & Steel Corp, Wuhan 430080, Peoples R China
来源：
ADVANCES IN MATERIALS AND MATERIALS PROCESSING, PTS 1-3 | 2013年 / 652-654卷
关键词：
galvanized sheet; linear defects; scratch; surface micro-crack;
D O I：
10.4028/www.scientific.net/AMR.652-654.2034
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Linear defect is a common defect of galvanized sheet. Formation mechanism of linear defect was analyzed by scanning electron microscopy (SEM) and energy disperses spectroscopy (EDS). The results indicate that Al2O3 particles which have a size less than 7 mu m are enriched in the shallow surface of the substrate. Al2O3 particles are exposed during rolling, resulting in scratches and rough spots on cold-rolled sheet. The places where Al2O3 inclusions enrich are easy to form surface micro-cracks. Linear defects are formed at the places of scratches or cracks during hot dip galvanizing. Optimum measures are putted forward based on Al2O3 inclusions and cracks.
引用
收藏
页码：2034 / +
页数：2
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