The electron beam welding can be carried out in _______.

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WBPSC JE Mechanical 2018 Official Paper
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  1. open air
  2. a shielded gas environment
  3. vacuum
  4. a pressurised inert gas chamber

Answer (Detailed Solution Below)

Option 3 : vacuum
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Detailed Solution

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Explanation:

Electron beam welding joins metals by bombarding a specific confined area of the base metal with high velocity electrons.

The operation is performed in a vacuum to prevent the reduction of electron velocity.

It allows fusion welds of great depth with a minimum width because the beam can be focused and magnified.
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