ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2009, Vol. 30 ›› Issue (3): 48-49.

• 工艺技术 • 上一篇    下一篇

热镀锌工艺对汽车用镀锌钢板表面缺陷的影响

宋新莉, 袁泽喜, 王迪   

  1. 武汉科技大学材料与冶金学院,武汉430081
  • 收稿日期:2008-11-12 出版日期:2009-06-01 发布日期:2022-11-24
  • 作者简介:宋新莉( 1973-),女,博上生,讲师,2004年华中科技大学毕业,钢铁材料强韧性研究。

Effect of Hot Galvanizing Process on Surface Defect of Galvanized Steel Plate for Automobile

Song Xinli,  Yuan Zexi , Wang Di   

  1. Institute of Material Science and Metallurgy Technology, Wuhan University of Science and Technology, Wuhan 430081
  • Received:2008-11-12 Published:2009-06-01 Online:2022-11-24

摘要: 用扫描电镜和能谱分析研究了热镀锌板(%:0.001 5C、0.004P、0.005S、0.02A1、0.04Ti)表面平行的条状凸起缺陷,得出镀锌层表面有黑斑、微裂纹、贝壳状花纹、划伤痕迹及氧化皮等缺陷。分析表明,锌液中Sb含量偏高,增加锌层脆性;锌液中Al含量偏高,锌液温度低,以及镀锌前钢板划伤和氧化铁清洗不完全导致产生表面缺陷。

关键词: 热镀锌工艺, 钢板表面缺陷, 分析

Abstract: Parallel convex strip defect at surface of hot galvanized steel plate ( % : 0.001 5 C, 0. 004P, 0. 005S, 0. 02A1, 0. 04Ti) has been studied by SEM and EDS, and it was obtained that the defect included black spot, microcrack, conchiform pattern, scratch trace and scale. Analyzed results showed that higher Sb content in galvanizing solution to increase brittleness of galvanized layer, higher Al content in galvanizing solution and lower temperature of solution, and retaining scratch defect and un-removed scale led to formation of surface defect of galvanized plate.

Key words: Hot Galvanizing Process, Plate Surface Defect, Analysis