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。同时，不同的轧机所选择的轧辊也是不相同的，需要根据生产要求选择轧辊。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。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.
(1)软辊；肖氏硬度约为30一40，用于开坯机、大型型钢轧机的租轧机等。
(2)半硬辊：肖氏硬度约为40一60，用于大型、中型、小型型钢轧机和钢板轮机的租轧机。
(3)硬面辊：肖氏硬度约为60一85，用于薄板、中板、中型型钢和小型型钢轧机的稿轧机及四辊轧机的支撑辊。
(4)特硬辊le氏硬度约为85—100，用于冷轧机。
(1) soft roll; the hardness of Shaw is about 30 40. It is used for the renting rolling mill of the billet machine and the large steel mill.
(2) semi hard roll: the hardness of the Shaw is about 40 to 60. It is used for the renting rolling mill of large, medium, ***all type steel mill and steel plate turbine.
(3) hard roll: Shore hardness of about 60 to 85, for supporting roller mill release sheet, plate, medium and ***all steel mill and four roller mill.
(4) the hardness of the hard roll Le is about 85 - 100 for cold rolling mill.
由于轧制过程是连续的过程，因此操作人员需要不断检测轧辊状况，使生产出来的产品满足用户对更严格的公差和表面质量的要求。
As the rolling process is a continuous process, the operator needs to continuously detect the roll status to meet the more stringent tolerance and surface quality requirements of the products produced.
什么是铸造轧辊，铸造轧辊主要有哪些种类？
铸造轧辊是指将冶炼钢水或熔炼铁水直接浇注成型这一生产方式制造的轧辊种类。
铸造轧辊按材质又可分为铸钢轧辊和铸铁轧辊两类；按制造方法又可分为整体铸造轧辊和复合铸造轧辊两类。
What are the casting rolls and what are the main types of casting rolls?
The casting roller refers to the type of rolls produced by direct casting of molten steel or molten iron.
The casting roll can be divided into two types: cast steel roll and cast iron roll according to material quality. According to the manufacturing method, it can also be divided into two types: integral casting roll and compound casting roll.