19世纪下半叶欧洲炼钢技术的进步要求轧制更大吨位的钢锭，无论是灰铸铁或冷硬铸铁轧辊的强度均已不能满足要求。含碳量为0.4%～0.6%普通铸钢轧辊相应诞生。重型锻压设备的出现更使这种成分的锻造轧辊的强韧性得到进一步提高。
In the second half of the nineteenth Century, the progress of steelmaking technology in Europe requires larger tonnage steel ingots to be rolled. Neither the strength of gray iron or chilled cast iron rolls can meet the requirements. The ordinary cast steel roll with a carbon content of 0.4% to 0.6% is born accordingly. The emergence of he***y forging equipment makes the strength and toughness of the forging roll of this component further improved.
而精轧辊速度较高，轧制终产品要有一定的表面质量，对它以硬度、耐磨等为主要要求。然后考虑轧辊使用时所应有的耐磨性。由于轧辊的磨损机理很复杂，包括机械应力作用、轧制时的热作用、冷却作用、润滑介质的化学作用以及其他作用。
And the high speed of the fine roller, the final product of rolling must h***e a certain surface quality, which is the main requirement for its hardness, wear resistance and so on. Then the wear resistance should be cidered when the roll is used. Because the wear mechani*** of roller is very complicated, including mechanical stress, thermal action during rolling, cooling effect, chemical action of lubricating medium and other functi.
被轧制的钢种
被轧制的钢种是选择轧辊的关键因素，其抗变形能力随坯料化学成分不同而改变，主要表现在轧制的各阶段变形的负荷大小和变化。必须根据确定的强度和硬度选择轧辊。
Rolled steel
The rolled steel is the key factor to select the roll. Its deformation resistance varies with the chemical of the billet. It is mainly manifested in the load and change of deformation in each rolling stage. The roll must be selected according to the determined strength and hardness.