带钢边部表面缺陷原因分析  

Analysis on Surface Defects at the Hot and Cold Rolled Strip Edges

作　　者：王恩睿[1] 吝章国[1] 谷凤龙[1] 贾耿伟[1] 王连轩[1] 程迪[1] 

机构地区：[1]河北钢铁集团邯钢技术中心,河北邯郸056015

出　　处：《钢铁钒钛》2015年第1期114-119,共6页Iron Steel Vanadium Titanium

摘　　要：对影响带钢表面质量的几种常见边部缺陷及形成机理进行了研究,采用关键过程数据分析和电镜观察相结合的方法明确了形态相似、诱因各异的形成特点。结果发现,外生夹杂导致的热轧带钢边部层状、线状缺陷区分布富含F、Na、Mg、Si等元素的块体,局部存在夹杂物与氧化铁的异质混合层。薄规格冷轧带钢叠轧类层状缺陷与轧制工艺参数设置有关,其层间组织光滑;边部线状缺陷异物刮痕特征明显,缺陷处无异物质点。研究结果为带钢表面缺陷的成因及判定提供了新的分析思路。Surface defects occurring in strip and their formation mechanism had been investigated. By the means of key process data analysis and SEM observation,it was found that the morphologies of the defects are similar,but the causes are different. The structure characteristic of layered defects induced by exogenous inclusions is that many particles containing F、Na、Mg、Si and other elements combined with iron oxide / inclusion co-exist layer distribute along the rolling direction continuously. The layered defects of thin gauge cold rolled strip possess a smooth interlayer,which is caused by the improper process parameters adoption. Scratch characteristic is significant near the silver defects,and no oxidant or inclusions are found. This findings provide a new way for the analysis of strip surface defects.

关 键 词：带钢 表面质量 层状缺陷 线状缺陷 

分 类 号：TG335.5[金属学及工艺—金属压力加工]