冷轧重卷机组卷形不齐质量问题分析

Study on the Shape Defects of Steel Coils on Cold Rolling Recoiling Line

统计表明，冷轧重卷机组带钢卷形不齐问题合金板和家电板比例最高，其次为普板和富士康板，镀锌板最低；剪边后卷形不齐比例升高；发生带钢卷形不齐的宽度、厚度敏感区分别是1201～1250mm和0．7—0．8mm。分析认为，导致带钢卷形不齐的主要因素是生产机组纠偏效果不良，圆盘剪切边带钢产生蛇形浪以及机组辊系稳定性差。采取改造机组纠偏装置，在圆盘剪前加装纠偏辊，改造机组辊系稳定性等措施后，卷形不齐问题在一定程度上得到了改善。

The statistics show that, the shape defects of steel coils on cold rolling recoiling line, alloy plate and sheet for home electrical appliances accounted for the highest proportion, followed by the general board and Foxconn plate, the proportion of galvanized plate is the lowest. The proportion of shape defects is higher after the cut edge. The sensitive area of the shape defects： width is 1 201- 1 250 mm and thickness is 0.7- 0.8 mm. Analysis suggests that, the main reason of the shape defects is poor production unit rectifying effect; disk shearing edge strip serpentine waves; poor stability of roll system. Through the study of the transformation of production line equipment the shape defects of steel coils can be reduced.