These extreme temperatures are higher than the steel s recrystallisation temperature, meaning it can be shaped and formed more easily. A rolling mill is a complex machine having two or more working rollers, supporting rollers, roll stands, drive motor, reducing gear, flywheel, coupling gear etc. The surface of the material will be covered with carbon scale. Its a steel fabrication process involving passing the metal through a pair of rollers. Hot rolling is often characterized by a condition called sticking, in which the hot work surface adheres to the rolls over the contact arc. Steel correctly choosing between hot roll and cold roll first. Cold rolling is a process by which the sheet metal or strip stock is introduced between rollers and then compressed and squeezed. Hot rolling is more common than cold rolling as it is cheaper and less time consuming. Since the product is supplied directly after cold rolling without further processing, full hard cold rolled unprocessed sheet will have residual. Quaker animation film steel cold rolling process youtube. This increases the yield strength and hardness of the metal. The amount of strain introduced determines the hardness and other material properties of the finished product. Hot rolling is the process of rolling the steel at a high temperature usually over 935c.
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