Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
ISBN: 9781305494695



Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
ISBN: 9781305494695
Textbook Problem

What effect does torch angle have on the shielding gas protective zone?

To determine

Effect of torch angle on shielding gas protective zone.


Torch angle position is an important parameter for good quality of gas tungsten weld. Perpendicular position of the torch is the ideal position for good quality of weld. Torch needed to hold near about perpendicular as much as possible. For better visibility torch can angled about 0°to15°. Shielded gas passes through the welding zone and forms a protective zone. On increasing torch angle the protective zone becomes narrow and distorted. On increasing torch angle more and more then weld will not protected from contamination of air in weld zone. Effect of torch angle on protective zone is shown in below figure.

  Welding: Principles and Applications (MindTap Course List), Chapter 17, Problem 1R

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