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Backing gas

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Backing gas is backing in the form of a shielding gas employed primarily to provide a protective atmosphere.[1]

Backing gas is used to prevent oxidation on the opposite weld surface, and also to reduce the risk of a molten pool collapse.[2]

References

  1. "Backing Gas." Standard Welding Terms and Definitions. A3.0:2001 ed. Miami: American Welding Society, 2001.
  2. http://www.melttools.com/
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