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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 welding process can cause porosity to form?

To determine

Name of the process causing porosity in welding.

Explanation

Laser beam welding process is used for creating weld by the help of laser beam. The lager gun provides extra heat that melts the filler metal. Welding of aluminum alloys are carried out by using laser beam. Hydrogen present in aluminum is main reason causing porosity.

  

Fig:1 − Sketch of pores on weld.

Porosity exists in different forms like- distributed, wormhole, pores generated by cracks on the surface. The gases dissolved is hydrogen, nitrogen and oxygen. Presence of pores causes shielding problems.

Porosity in welding is defined as the presence of cavities after welding is done...

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