摘要
为进一步拓展汽车领域应用,研究了先进高强热镀锌汽车板表面缺陷的控制技术。结果表明:在热轧、罩退、热镀锌等工序,合金元素氧势均低于Fe元素,造成“内氧化”现象,导致镀锌成品表面容易出现缺陷。针对漏铁、鸡爪印、色差及麻面等4类主要表面缺陷,确定了造成缺陷的主要因素、产生机理,通过相应的生产控制工艺措施,使缺陷改判率分别稳定降低至0.58%、0.19%、0.52%和0.15%以下。
For expanding the application in the automotive field,the surface defect control technology for advanced high strength hot dip galvanized automobile sheet was studied.Results showed that the oxygen potential of alloy element was lower than that of Fe during hot rolling,annealing and hot galvanizing processes,resulting in an “internal oxidation” phenomenon,which made defects easily to occur on the surface of galvanized products.Focusing on such four main surface defects as iron leakage,chicken claw print,color difference and pockmarked surface,the main factors causing the defects and the mechanisms for the formation of defects were determined.Through the measure of corresponding production control processes,the commuted rates of defects declined to below 0.58%,0.19%,0.52% and 0.15% respectively.
作者
储双杰
汤文杰
梁高飞
钱洪卫
CHU Shuang-jie;TANG Wen-jie;LIANG Gao-fei;QIAN Hong-wei(Baoshan Iron and Steel Co.,Ltd.,Shanghai 201900,China)
出处
《材料保护》
CAS
CSCD
2022年第8期166-170,共5页
Materials Protection
关键词
先进高强钢
汽车板
热镀锌
表面缺陷
advanced high strength steel
automobile sheet
hot dip galvanized
surface defect
