Rolls are the most important components in a rolling mill, which cause the rolled metal to deform plastically. They are two kinds of rolls: plain rolls and grooved rolls.

• 轧辊是轧机最重要的部件，是它们使被轧制的金属塑性变形。轧辊有两种，一种是平轧辊，另一种是有槽轧辊。