无取向硅钢热轧卷结疤缺陷产生的原因及控制

Reason and Control for Scab Defects of Non-oriented Silicon Steel

针对不同牌号的无取向硅钢产生结疤缺陷的难易程度和表面结疤缺陷的外形特征及分布规律,分析了该缺陷产生的原因。通过调整剪前导板的对中度,设置精轧侧导板开度余量及短行程数值,及时修补与更换侧导板,减少带坯与侧导板挤撞程度,有效地降低了结疤缺陷发生率。

This article analyses the cause of the scab defects according to the defects appearance characters and distribution law, degree of difficulty to form scar of non - oriented silicon steel. It can effectively decrease the scabs by different methods, such as adjusting the center line of guide plate, setting the opening margin and short stroke value of the side guide on finishing mill, timely repairing and replacing of side guide, decreasing the collision between the strip and side guide.