由于四辊轧机的工作辊、支撑辊与其轴承座之间以及轴承座与机架之间存在着间隙。在轧制过程中,工作辊、支撑辊及其轴承座如无固定的侧向力约束,将处于不稳定状态,这种不稳定将导致轧制不稳定及精度降低,加速轧辊的磨损及降低轴承的使用寿命。因此,应使工作辊和支撑辊在轧制时保 Due to the work rolls of the four-high mill, there is a gap between the support roller and its bearing block and between the bearing block and the frame. During the rolling process, the work rolls, backup rolls and their housings will be in an unstable condition without any fixed lateral force. Such instability will result in unstable rolling and reduced precision, accelerated wear and tear of the rolls Bearing life. Therefore, the work roll and backup roll should be protected during rolling