提高冷轧钢带卷形质量的实践

Improvement Practice for the Rolling Quality of Cold Rolled Steel Strip

针对冷轧钢卷在轧机卷取过程中存在的塔形、溢出边问题,对造成冷轧钢带卷形不齐的原因进行分析,采取改造CPC油缸外形尺寸、更换磨损严重的衬板、调整开卷机底座与轧机中心线偏差值、消除中间辊横移偏差值、提高轧辊尺寸精度、提高钢卷冷却效果、调整轧辊预热时间等优化改进措施,提高了卷形质量,卷形不良比例由21.7%降低到6%,钢卷的塔形、溢出边缺陷得到有效控制。

To the steel coil problems of tower and the overflow edge in roll process of the cold rolled mill, the shape irregular cause of cold rolled strip coil were analyzed in this paper. Some measures were taken, such as the CPC outline dimension of the cylinder was transformed, the unwinding machine lining board was measured and the lining plate after serious wear were replaced, the deviation value of uncoiler base and the mill center line was adjusted, deviation value of intermediate roll shifting was eliminated, the accuracy of work roll size and the cooling effect steel coil were improved, the roll preheat time was adjusted and so on. The quality of coil shape was improved. The rectification ratio of the steel coil was reduced from 21.7% to 6% per month, and the telescoping and overflow edge defects were effectively controlled.