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轧机压下回轮是我国中厚钢板厂普遍存在的问题,该问题主要发生在粗轧机上,它表现为在轧制过程中,已经停止转动的压下螺丝自动旋松,使辊缝值变动,造成轧件薄厚不均,严重影响轧件质量。轧机压下回轮是工艺要求和设备缺陷共同作用的结果,而设备的自锁性设计、平衡力确定、丝杆和螺母间隙、润滑液的使用、制动装置的使用、阻力矩程序使用都对回轮程度产生影响。阐述了轧机压下回轮的原因、防回轮设计方向和当前通常采取的两项防回轮措施的原理并对比二者的优缺点,验算了自锁条件和平衡力,提出了解决轧机压下回轮的研究方向,为今后进行机构设计和处理回轮故障提供参考。
Rolling mill back to the wheel is a common problem in China’s medium-sized steel mill, the problem occurs mainly in the roughing mill, which showed that in the rolling process, has been stopped turning the screw automatically Loosen, so that the value of the roll gap changes , Resulting in uneven rolling thickness, seriously affecting the quality of rolling. Rolling mill is the return of the technology requirements and equipment defects caused by the combined effect of the device’s self-locking design, balance determination, screw and nut clearance, the use of lubricating fluid, the use of braking devices, Impact on the return round. The reasons why the rolling mill depresses the return wheel, the design direction of the anti-return wheel, and the two commonly adopted measures of anti-return wheel are expounded. The advantages and disadvantages of the two measures are compared and the self-locking condition and balance force are checked. The research direction of the next round of rounds provides reference for the future design of institutions and the handling of the failure of return rounds.