【作者】 戴杰涛； 李烈军； 张祖江； 周峰；

【Author】 Dai Jietao;Li Liejun;Zhang Zujiang;Zhou Feng;School of Mechanical & Electric Engineering, Guangzhou University;School of Mechanical & Automotive Engineering,SCUT;Shaoguan Iron & Steel Co.,Baowu Steel Group;

【机构】 广州大学机械与电气工程学院； 华南理工大学机械与汽车工程学院； 宝武集团韶关钢铁股份有限公司；

【摘要】 针对韶钢3450mm中厚板生产线存在的凸度过大、边浪严重和楔形大的板形问题进行了分析,通过大量的现场跟踪数据和理论分析发现造成凸度和边浪严重的主要原因在轧制过程中钢板宽度方向上的压下量中间小两边大,而造成楔形的主要原因是由于轧机操作侧和传动侧的牌坊刚度不一致。针对这些原因对韶钢3450mm生产线的工艺进行了优化改进:(1)设计了凸度更大的工作辊辊形曲线;(2)优化了机组的弯辊力投入制度;(3)减少了末3道次的压下量;(4)对换辊和配辊制度进行了优化;(5)通过机组的垫片调整了轧机的辊缝值。通过上述工艺措施,机组的凸度值由0.2mm以上降低到了0.07mm以内,楔形值由0.17mm降低到了0.06mm左右,同时有效地控制了机组薄规格板材轧制过程中的边浪问题,将机组的轧制厚度由9mm拓展到了8mm,并实现了稳定轧制。更多还原

【Abstract】 Analysis of the problem that the crown too large, wave and wedge serious on shaoguan steel 3450 mill. Through a large number of on-site tracking data and theoretical analysis found that the main reason for serious crown and waves is that the reduction inconsistent during the rolling process on the width of the steel sheet, and the main reason foe wedge is rolling mill stiffness difference on the drive side and operating side. According to these main reasons, some process measures were proposed:(1) Designed a new work roll shape curve;(2) Improved bending force using technology;(3) Reduced the amount of the last 3 passes reduction;(4) Optimized with roller and roller system;(5) Adjust the rolling mill roll value.Through the above process measures, the unit’s convexity value is reduced from 0.2 mm to 0.07 mm, the wedge value is reduced from 0.17 mm to about 0.06 mm, effectively control the problem of the edge wave in thin plate rolling, created significant economic benefits.更多还原