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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 11R
Textbook Problem
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Why is SMA welding current referred to as constant current?

To determine

The reason for constant current in SMA welding.

Explanation of Solution

Shielded metal arc welding:

It is the type of arc welding. In this type of welding consumable electrode is required continuously. The molten weld and the arc zone is protected from the atmospheric condition by submerging under a blanket of granular fusible flux. Submerged arc welding is normally operated in automatic manner.

The figure below shows the graph between volt current output curve for constant current power source.

  

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