How much is the hardness of the roll of the piercing machine
2024/04/24

The roll is an important part of the piercing machine, and its hardness directly affects the rolling effect in the rolling process. The hardness of the rolls typically ranges between 50-65HRC, while the extra hard rolls have a Shore hardness of about 85-100. The hardness of rolls depends on their use. For example, flat rolls are used in strip mills, and the hardness is usually between 50-65HRC. Grooved rolls are used for rolling large, medium and small steel, wire rods and preliminary rolling and billet, and the hardness is usually between 55-65HRC. Special rolls are used in special rolling mills such as steel pipe rolling mills, wheel rolling mills, steel ball rolling mills and piercing mills, and the hardness is usually between 60-70HRC.
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