板坯角部横裂纹的快速检验  

Rapid inspection of transverse crack at corner of slab

作　　者：徐宇轩 张红艳 赵雨 黎静 赵俊卿 赵斌 Xu Yuxuan;Zhang Hongyan;Zhao Yu;Li Jing;Zhao Junqing;Zhao Bin(Jilin Jianlong Iron and Steel Co.,Ltd.,Jilin 132000,China)

机构地区：[1]吉林建龙钢铁有限责任公司,吉林132000

出　　处：《冶金标准化与质量》2023年第1期15-17,共3页Metallurgical Standardization & Quality

摘　　要：角部横裂纹(以下简称角裂)是炼钢厂连铸工序生产过程中常见的缺陷,多出现在板坯内弧的角部位置,裂纹若被带到轧制工序,很大几率在板带成品上造成边裂及边部翘皮缺陷。目前国内大多数钢厂采用冷态检验方式判定质量,此种方式的检查周期较长;另一种是倒角切除的方式通切,此种方式人工成本增加、影响板坯收得率。为缩短板坯角裂缺陷检查周期,靶向清除角裂缺陷,提高轧制后板带成品合格率。本文采用新方法对板坯内弧角部进行检查,判定板坯是否有角裂缺陷,将判定时间缩短至8 min,试验表明,该方法对于检查板坯角裂缺陷的时间缩短,是有效的。Corner transverse crack(hereinafter referred to as corner crack)is a common defect in the production process of continuous casting process in steel-making plant.It mostly occurs at the corner of the inner arc of the slab.If the crack is brought to the rolling process,it is very likely to cause edge crack and edge warping defect on the finished plate and strip.At present,most domestic steel mills use the cold state inspection method to determine the quality,which has a long inspection cycle;The other is through cutting,which increases the labor cost and affects the slab yield.In order to shorten the inspection period of slab angular crack defects,eliminate the angular crack defects and improve the qualified rate of rolled plate and strip.In this paper,a new method is used to inspect the inner arc corner of the slab to determine whether there is angular crack in the slab,and the determination time is shortened to 8 minutes.The test shows that this method is effective in reducing the time for inspecting the angular crack in the slab.

关 键 词：连铸 板坯缺陷 角部横裂纹 快速检验 

分 类 号：TF777[冶金工程—钢铁冶金]