轧钢机设备轧辊的主要性能指标有芯部强度和作业层的杰出耐磨性。挑选轧辊除了考虑经济性和换辊槽周期与停机时刻相匹配外，更重要从各机组架次孔型不同、轧件变形特色、产品精度要求动身，为不同架次挑选合理归纳性能好的轧辊。轧钢机粗轧机架主要任务是高温状态下缩减断面，轧辊在这个方位接受轧制力大。轧槽深、下压量大，因而轧辊辊颈应具有较高的强度。其次，因为轧辊在这个方位轧速适当慢，相对来说，轧辊与高温钢坯接触时刻长，因而要有好的抗热裂性、抗脱落性、抗冲击性和好的咬入性。此机架挑选合金钢、半钢、合金球铁、或铁素体球铁均可满足要求。

The main performance indicators of the rolls in the steel rolling mill equipment include core strength and outstanding wear resistance of the working layer. When selecting rolls, in addition to considering economic factors and matching the roll slot cycle with the downtime, it is more important to start from the different hole types of each production line, the deformation characteristics of the rolled pieces, and the precision requirements of the products, and select rolls with reasonable comprehensive performance for different production lines. The main task of the rough rolling stand of a steel rolling mill is to reduce the cross-section under high-temperature conditions, and the rolls are subjected to a large rolling force at this position. The rolling grooves are deep and the downward pressure is large, so the neck of the roll should have high strength. Secondly, since the rolling speed of the rolls is relatively slow at this position, the contact time between the rolls and the high-temperature billet is relatively long. Therefore, it is necessary to have good resistance to thermal cracking, anti-shedding, impact resistance and good bite penetration. This frame can be made of alloy steel, semi-steel, alloy ductile iron or ferritic ductile iron, all of which can meet the requirements.