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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 should the welder watch if the view of the weld is obstructed by the shielding gas nozzle?

To determine

Things a welder should watch if the view of weld is obstructed by the shielding gas nozzle.

Explanation

During Welding sometimes because of the welding gas the view of welder is obstructed which can results in improper welding and uneven weld bead.

As, if the welder's view is obstructed he has to see the flow of gas and notice any change in the color of gas, as mixing any oxygen and carbon dioxide adds some reactive properties to the noble gases like argon.

As if shielding gas does not spread properly onto the weld bead then Nitrogen and oxygen can penetrate the weld bead and form porosity in it...

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