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

页码：2034 / +

页数：2

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