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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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List five advantages of the modulated current and pulsed-arc metal transfer process.

To determine

The five advantages of modulated current and pulsed arc metal transfer process.

Explanation

The major advantages of the modulated current and pulsed-arc metal transfer process are as follows:

  • The base metal requires lower heat input:

    The dual pulse produced in pulsed arc transfer process is of two different current, one is of high current and the other one is of low current. As the heat is directly proportional to the current it implies low heat input in pulsed arc method.

  • The distortion rate is low or can be minimized:

    Because of pulsating current and low heat input the deformation rate is low because the metal gets a chance to cool down during low current pulse.

  • The penetration of metal is more:

    The high pulse current allows the metal to melt easily and fuse with the base metal provides high penetration.

  • The travel speed of weld is high:

    During the low current cycle the weld pool is allowed to cool down thus, gun can travel with more speed during this time of interval...

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