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Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
ISBN: 9781305494695

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BuyFindarrow_forward

Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
ISBN: 9781305494695
Textbook Problem
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What can cause root contamination?

To determine

Cause of root contamination.

Explanation

Contamination is the deposition of unwanted material on the weld. This is the major defect on the weld. Contamination of the material takes place at back side of the metal. It causes porosity, oxide inclusion, embrittlement and oxide layers. Contamination caused by:

  • Poor cleaning procedure: - Poor cleaning procedure will not remove contaminated plate.
  • Overheating: - More the heating faster will be the rate of contamination...

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