What are rolls used for

Rolls are the main working parts and tools on the rolling mill that cause continuous plastic deformation of metal.

The roll is mainly composed of three parts: the roll body, the roll journal and the shaft head. The roll body is the middle part of the roll that actually participates in rolling the metal. It has a smooth cylindrical or grooved surface.

The variety and manufacturing process of rolls have evolved with the advancement of metallurgical technology and the evolution of rolling equipment. In the Middle Ages, low-strength gray cast iron rolls were used to roll soft non-ferrous metals. In the middle of the 18th century, Britain mastered the production technology of cold-hardened cast iron rolls for rolling steel plates. Advances in European steelmaking technology in the second half of the 19th century required the rolling of larger tonnage ingots, and neither grey cast iron nor chilled cast iron rolls were no longer strong.

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