带钢卷取擦伤缺陷在不同工序下的微观特征  

Microscopic characteristics of scratch defects in strip steel coiling under different processes

作　　者：陈兴 刘少先 王俊峰 CHEN Xing;LIU Shaoxian;WANG Junfeng(Baosteel Zhanjiang Iron and Steel Co.,Ltd.,Zhanjiang 524000,China)

机构地区：[1]宝钢湛江钢铁有限公司,湛江524000

出　　处：《理化检验(物理分册)》2025年第4期64-68,共5页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：针对热卷、酸洗板、锌铁合金板表面出现的卷取擦伤缺陷,利用宏观观察、化学成分分析、微观分析等方法研究了缺陷的不同特征。结果表明:3种卷取擦伤缺陷均为热卷卷取时产生的,且宏观形貌相似,均为横向分布,由密集的点划伤组成;热卷表面的氧化铁皮被破坏,缺陷存在金属堆积和氧化铁,组织中存在细小和变形的晶粒;酸洗卷表面氧化铁皮被酸洗掉,组织中存在细小和变形的晶粒;锌铁合金板表面的平整程度不同,且合金化程度较轻,基板中未发现氧化铁,组织中仅存在细小的晶粒,通过晶粒特征能够准确地进行工序分离。The different characteristics of the scratch defects during coiling on the surface of hot rolled,acid washed plates,and zinc iron alloy plates were analyzed using macroscopic observation,chemical composition analysis,microscopic analysis.The results show that all three types of scratch defects were generated during hot rolling and had similar macroscopic morphology.They were all horizontally distributed and composed of dense point scratches.The iron oxide scale on the surface of the hot roll was damaged,and there were metal accumulation and iron oxide at the defect site.There were small and deformed grains in the microstructure.The iron oxide scale on the surface of the acid washed roll was washed away by acid,and there were small and deformed grains in the microstructure.The flatness of the surface of zinc iron alloy plates varies,and the degree of alloying was relatively light.No iron oxide was found in the substrate,and only small grains were present in the microstructure.Accurate process separation could be achieved through grain characteristics.

关 键 词：卷取擦伤缺陷 晶粒特征 热卷 酸洗板 锌铁合金板 显微组织 

分 类 号：TB31[一般工业技术—材料科学与工程] TG113.2[金属学及工艺—物理冶金]