Rolling


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In metalworking, rolling is a metal forming process in which metal stock is passed through a pair of rolls. Rolling is classified according to the temperature of the metal rolled. If the temperature of the metal is above its recrystallization temperature, then the process is termed as hot rolling. If the temperature of the metal is below its recrystallization temperature, the process is termed as Cold Rolling. In terms of usage, hot rolling processes more tonnage than any other manufacturing process, and Cold Rolling processes the most tonnage out of all cold working processes.

There are many types of rolling processes, including ring rolling, roll Bending, roll forming, profile rolling, and controlled rolling.