一、板材的平直度缺陷和它的消除法随着用户对钢材质量要求的不断提高,对板材平直度要求也就进一步提高。但是板材经轧制后,在平面方向上具有不同的内应力,使得它在相应的方向上产生了少量的长度差,因而引起板材的不平直。板材愈薄,在纵横向上的刚度也就愈差,这样即使在板材平面上只有很小的内应力差别也会导致波纹的产生。若想生产出一点内应力也没有的板材几乎是不可能 First, the flatness of the plate defect and its elimination method As the user on the continuous improvement of the quality of steel, flatness requirements on the sheet will be further improved. However, the sheet material after rolling has different internal stresses in the plane direction, so that it produces a small amount of length difference in the corresponding direction, thereby causing the sheet material to be uneven. The thinner the board, the worse the stiffness in the vertical and horizontal directions, so that even a small difference in internal stress in the plane of the board can lead to ripples. If you want to produce a little stress there is no plate is almost impossible