轧辊产生弹性压扁时可能轧制的板厚。在一定轧机上轧制一定的产品时，随着板带的逐渐变薄，压下越来越困难。当板带薄至某一限度后，不管如何旋紧压下螺丝或加大液压压下的压力，不管反复轧制多少道，由于轧辊产生弹性压扁而不可能再使产品变薄。弄清轧辊的使用条件以及在同类型轧机中所用轧辊的失效方式，了解当前各种轧辊材质的性能和制造工艺，才能较正确地制定该轧机用辊的技术条件和选用合适而经济的轧辊材质。这一极限厚度称为可轧厚度。
The ***allest plate thickness may be rolled when the roll produces elastic squash. When a certain product is rolled on a certain rolling mill, with the gradual thinning of the strip, it is becoming more and more difficult to press down. When the strip is thin to a certain limit, no matter how to tighten down the screw or increase the pressure of hydraulic pressure, no matter how many rolls are repeatedly rolled, it is for the product to become thin due to the elastic flattening of the roll. This limit thickness is called the minimum rolling thickness.
既避免机械加工，又无补焊热应力热影响，修正厚度也不受***，一起产品所具有的耐磨性及金属材料不具备的退让性，确保修正部位的接触协作。
Not only to ***oid mechanical processing, but also to weld hot stress and heat, the correction thickness is not bound, and the wear resistance of a product and the non - concession of metal materials are not ***ailable, so as to ensure a hundred percent contact and cooperation of the corrected parts.
这些应力沿辊身的散布是不均匀的、不断改变的，其原因不只有规划要素，还有轧辊在运用中磨损、温度和辊形的不断改变。
The dispersion of these stresses along the roll is uneven and c***tantly changing, and the reas*** are not only the planning elements, but also the c***tant change of wear, temperature and roll shape in the use of the rolls.