In which process is the diameter of a tube reduced or increased by forcing into a confined die?

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NPCIL SA/ST ME GJ held on 07/11/2019 Shift-1
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  1. Swaging
  2. Embossing
  3. Lancing
  4. Forging

Answer (Detailed Solution Below)

Option 1 : Swaging
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Detailed Solution

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Concept:

In swaging, also known as rotary swaging or radial forging, a rod or tube is reduced in diameter by the reciprocating radial movement of two or four dies.

Additional Information

Upsetting

  • Upsetting is a forging operation whereby the length of a piece of metal is reduced and its cross-sectional area is increased.

upsetting

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