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Manufacturing Technology: Theory and Problems, Second Edition by D. K. Singh

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CHAPTER 13

Forming Processes

  • Forming processes are used to shape a material into useful products. The material is permanently deformed during such processes.
  • Forming processes are performed in cold or hot state.
  • Cold working processes are performed below the recrystallization temperature of a metal, preferably at room temperature.
  • Hot working processes are performed above the recrystallization temperature of a metal.
  • The recrystallization temperature of a metal is approximately one-half of its melting temperature on absolute scale.
  • During hot working, grain structure of a metal is refined and lower energy and less deformation forces are required.
  • During cold working, grains are distorted and greater deformation forces and higher energy are ...

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