在小型连轧机中,机组之间采用小张力轧制。其张力大小由操作人员根据轧件在导槽中的状态用肉眼估计。在调整粗轧和精轧机组速度时,应使两条机组中张力同时最小。但在轧制过程中,粗轧机组内的轧件线数是变化的,因此,金属对轧辊的压力、以及机座的弹性变形和辊缝也要随之变化,张力制度遭到破坏,张力增大或形成活套,从而降低了轧制精度。为此,操作人员不得不对张力予以经常注意,必要时还要修改速度制度。特别在轧机负荷不稳定时,要求操作人员更加集中精力进行操作,这样,操作人 In the small continuous rolling mill, the rolling mill is tensioned with small tension. The tension is estimated by the naked eye from the operator based on the state of the rolling stock in the guideway. When adjusting the speed of roughing and finishing units, the tension in both units should be minimized at the same time. However, during the rolling process, the number of rolling lines in the roughing rolling mill group varies. Therefore, the pressure of the metal on the roll, the elastic deformation of the stand and the roll gap also change, the tension system is destroyed, the tension Increase or form a looper, thereby reducing the rolling accuracy. To this end, the operator had to pay regular attention to the tension, if necessary, but also modify the speed system. Particularly when the rolling mill load is unstable, the operator is required to concentrate more on the operation. In this way, the operator