不锈钢热轧中间坯边部侧翻缺陷初探  

Primary Investigation on Rollover Defect at Edge of Hot Rolled Intermediate Billet for Stainless Steel

作　　者：邬宇轩 刘朋成 杨静 冯海涛 卢晓禹 郝娟娟 Wu Yuxuan;Liu Pengcheng;Yang Jing;Feng Haitao;Lu Xiaoyu;Hao Juanjuan(Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010

出　　处：《包钢科技》2025年第2期44-48,共5页Science & Technology of Baotou Steel

摘　　要：文章对典型不锈钢钢板表面边部侧翻缺陷进行了研究。利用金相显微镜和扫描电镜对边部侧翻缺陷横截面形貌、组织、成分等进行了分析。通过检测分析发现边部侧翻缺陷在热轧中间坯上已经形成,微观形态为开口指向边部的裂纹且内部氧化物存在分层现象,成因是在高温条件下,在轧制过程中金属横向变形不均匀导致的。据此提出了缺陷的一种形成机理,通过有效的防治措施可以减小甚至消除这种缺陷,降低其对成品成材率的影响。In the paper,the typical rollover defect at edge on surface of stainless steel plate is studied.The morphology,microstructure and composition of cross section for rollover at edge are analyzed by metallographic microscope and scanning electron microscope.It is found that the rollover defect at edge has formed on hot rolled intermediate billet as well as micro morphology is the crack with opening pointing to edge and there is delamination for subscale,which is caused by uneven transverse deformation of metal in rolling process under high temperature condition.According to this,a type of formation mechanism of the defect is proposed.This defect could be reduced or even eliminated through effective prevention measures so that the impacts of it on yield of finished products could be reduced.

关 键 词：不锈钢 热轧板 边部侧翻 形成机理 防治措施 

分 类 号：TG337.5[金属学及工艺—金属压力加工]