热轧带钢边部“翘皮”缺陷分析

Analysis on the edge surface upwarping of hot rolled strip

针对热轧带钢边部“翘皮”缺陷,从轧钢角度,采用多因素分析法,对影响低碳钢“翘皮”缺陷产生的各种因素进行了分析。结果表明,轧制加热制度和调宽量对“翘皮”缺陷的发生率有较大影响。通过对SP侧压定宽和立辊定宽轧制两种工艺的比较,发现SP侧压定宽轧制时,金属流动均匀,不易产生“狗骨”形,更有利于降低缺陷发生率。

Aimed at the edge surface upwarping of strip during hot rolling, the effect of rolling factors on surface upwarping in low carbon steel were analyzed. The results show that the heating institution and the width reduction are the main factors to cause surface upwarping. By comparing the SP rolling with the edging rolling, the metal flows uniformly and is not easy to form dog bones during SP rolling.