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Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
Publisher: Cengage Learning
ISBN: 9781305494695

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BuyFindarrow_forward

Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
Publisher: Cengage Learning
ISBN: 9781305494695
Chapter 3, Problem 15R
Textbook Problem
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How can arc blow be controlled?

To determine

The process for controlling the arc blow.

Explanation of Solution

While welding of specimen at the center using DC supply the magnetic lines will be equally distributed throughout the work piece and hence the arc is straight and concentrated at a point.

When the welding comes at the edge of the work piece the magnetic line are concentrated towards the work piece which tends to deflect the arc towards the work piece and hence leads to the arc blow phenomenon. This produces weld spatter.

The following figure represents the arc blow.

  

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