For mills that use rollers to crush grain
or stone, see roller mill. rolling schematic, Rolling visualization. In
metalworking, rolling is a metal forming process in which metal stock is passed
through one or more pairs of rolls to reduce the thickness and to make the
thickness uniform. The concept is similar to the rolling of dough. 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
known as hot rolling. If the temperature of the metal is below its
recrystallization temperature, the process is known 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.Roll stands holding pairs of rolls are grouped together into rolling
mills that can quickly process metal, typically steel, into products such as
structural steel (I-beams, angle stock, channel stock, and so on), bar stock,
and rails. Most
There are many types of rolling processes,
including ring rolling, roll bending, roll forming, profile rolling, and
controlled rolling.
