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针对生产实际发生打滑问题,结合现场实际条件,建立连退活套转向辊升速过程中与转向辊接触段带钢的运动及力学模型,推导建立判断带钢发生打滑与否的模型,分析了升速过程中带钢打滑的力学原理,指出了在升速过程中带钢不仅可以由于粗糙度下降引起打滑,而且可以在摩擦因数足够的情况下由于前后张力波动也引起打滑,并分析了前后张力的波动对与转向辊接触段带钢的摩擦力、支持力、加速度的影响,在此基础之上,指出了张力波动控制优化的目标值,并应用于现场,避免了打滑事故的再次发生。
In view of the problem of slippage in actual production, combined with the actual conditions in the field, the movement and mechanical model of the strip in contact with the steering roller during the rising process of the reloading sleeve was established, and the model to determine the slippage of the strip was deduced. The principle of strip slipping in the process of increasing speed is pointed out. It is pointed out that strip slipping can not only be caused by the decrease of roughness but also slippage due to the fluctuation of tension before and after the friction factor is sufficient, The influence of the fluctuation of tension on the friction force, the supporting force and the acceleration of the steel in the contact section of the steering roller was pointed out. Based on this, the target value of the tension fluctuation control optimization was pointed out and applied to the site to avoid the recurrence of the slipping accident .