【摘要】 热轧精轧机组下游机架既要实现板形控制,又要均匀化轧辊磨损以实现自由规程轧制.同时,硅钢、集装箱用钢等专用钢边部减薄严重,常规的板形控制手段难将凸度控制到目标值.开发了非对称工作辊,辊身一端带特殊曲线,上下工作辊成反对称放置.改变轧辊的轴向位置,带钢凸度变化量可超过150μm.设计了针对该工作辊的特定窜辊策略,带钢边部板形可得到有效控制.改善了轧辊磨损辊形,有利于实现自由规程轧制.在鞍钢1700ASP生产线上的使用实绩表明,采用非对称工作辊后,硅钢凸度降低了29.8%,高强度钢的凸度可降至50μm以下,且凸度控制稳定.更多还原

【Abstract】 Both shape control and uniform roll wear for schedule-free rolling should be realized in the downstream stands of the finishing trains of hot rolling,and the edge drop of some special steel grades such as silicon steel and container steel is large.It is much difficult to get the target crown by conventional shape control means.The asymmetry work roll with a special curve at one roll body end was developed.The top work roll and bottom work roll are placed anti-symmetrically.As the roll axial position is changed,the variation in strip crown is over 150 μm.In order to control the strip edge profile efficaciously,a relevant shifting strategy of this roll was designed.At the same time,the wear contour of the work roll can be improved and it is helpful for schedule-free rolling.The application of the asymmetry work roll in the 1700ASP product line of Ansteel shows the crown of silicon steel is reduced by 29.8% and the crown of high strength steel can be controlled below 50 μm stably.更多还原