通常對粗軋輥以強(qiáng)度、抗熱裂為主要要求；小型20輥軋機(jī)的工作軋輥重僅 100克左右，而寬厚板軋機(jī)的支承輥重量已超過200噸。選用軋輥時首先根據(jù)軋機(jī)對軋輥的基本強(qiáng)度要求，選定安全承載的主體材料（各種級別的鑄鐵、鑄鋼或鍛鋼等）。

Usually, the main requirements for rough rolling roll are strength and thermal cracking. The working roll weight of small 20 high mill is only 100 grams, while the weight of backup roll of wide plate mill has exceeded 200 t. When selecting the roll, first, according to the requirements of the mill's basic strength for the roller, we select the main material for safety loading (various grades of cast iron, cast steel or forged steel, etc.).

而精軋輥速度較高，軋制終產(chǎn)品要有一定的表面質(zhì)量，對它以硬度、耐磨等為主要要求。然后考慮軋輥使用時所應(yīng)有的耐磨性。由于軋輥的磨損機(jī)理很復(fù)雜，包括機(jī)械應(yīng)力作用、軋制時的熱作用、冷卻作用、潤滑介質(zhì)的化學(xué)作用以及其他作用。

And the high speed of the fine roller, the final product of rolling must have 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 mechanism of roller is very complicated, including mechanical stress, thermal action during rolling, cooling effect, chemical action of lubricating medium and other functi.