Abstract:

The shape control feature of VC (variable crown) roller system under the combined actions of control pressure and rolling load was analyzed. Based on the VC roller developed, the roll gap profile and the relationship among crown of roll gap, rolling load and the control pressure were studied, and the concept of critical maximum control rolling force was put forward. The research results indicate that the capacity of VC roller in controlling the strip shape is superior to the common solid rollers whose specifications are the same as those of the VC rollers if rolling load is lower than the critical maximum control rolling force. Under the conditions of lower rolling force and the higher control pressure, the state that the crown of loading roll gap is equal to or less than zero can be realized with VC rollers.

Key words: VC roller, shape control, critical maximum control rolling force, loading roll gap

摘要：

对控制压力与轧制力共同作用下的VC（variable crown）轧辊的承载特性进行了研究。基于所开发的VC轧辊系统，分析了辊缝形状和辊缝凸度与轧制力及控制压力的关系，提出了临界最大控制轧制力的概念。研究结果表明:当轧制力小于轧辊系统的最大临界控制轧制力时，其板形控制能力优于同规格的实心平辊；当控制压力较大且轧制力较小时，轧辊系统可以实现零凸度或负凸度的负载辊缝。

关键词: VC轧辊, 板形控制, 临界控制轧制力, 负载辊缝