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Basic Mechanical Engineering by Pravin Kumar

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21

Mechanical Working of Metals, Sheet Metal Work, and Powder Metallurgy

Chapter Objectives

In this chapter, you will learn about:

  • Hot working and cold working
  • Metal forming processes
  • Sheet metal process
  • Tools and processes used in sheet metal
  • Powder metallurgy
  • Steps in powder metallurgy
  • Applications of powder metallurgy
21.1  INTRODUCTION OF MECHANICAL WORKING PROCESS

Mechanical working is a process of shaping of metals by plastic deformation. When a metal is subjected to external force beyond yield strength but less than fracture strength of the metal, metal is deformed by slip or twin formation. There are two types of mechanical working process: cold working and hot working.

When metal is deformed between room temperature and recrystallization ...

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