Mechanical Working of Metals

The mechanical working of metals is defined as an intentional deformation of metals plastically under the action of externally applied forces. It may be described as hot working and cold working depending upon whether the metal is worked above or below the recrystallisation temperature. The temperature at which the new grains are formed in the metal is known as recrystallisation temperature.

The metal is subjected to mechanical working for the following purposes:

  • To reduce the original block or ingot into desired shapes
  • To refine grain size, and
  • To control the direction of flow lines.

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