The rolling mill is an important component of the perforating machine, and its hardness directly affects the rolling effect during the rolling process. The hardness range of rolling rolls is usually between 50-65HRC, while the Shore hardness of extra hard rolling rolls is about 85-100. The hardness of the rolling mill depends on its use, for example, flat rolling mills are used for strip mills, and the hardness is usually between 50-65HRC; Slotted rollers are used for rolling various types of steel, wire rods, and billets, with a hardness typically between 55-65HRC; Special rolling mills are used on specialized rolling mills such as steel pipe mills, wheel mills, steel ball mills, and perforating machines, with a hardness typically between 60-70HRC.
