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Technical Discussions
deepak
India, Joined Mar 2012, 2

deepak

India,
Joined Mar 2012
2
08:24 Jun-10-2014
Aluminium Welding

Sir,

In aluminum MIG welding, Is there any special defect comparing to others ?
What are the important points to be keep in always in mind during Aluminum MIG Welding (Sheet).

 
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Amy
NDT Inspector, - -
USA, Joined Jan 2009, 87

Amy

NDT Inspector, - -
USA,
Joined Jan 2009
87
19:47 Jun-10-2014
Re: Aluminium Welding
In Reply to deepak at 08:24 Jun-10-2014 (Opening).

Deepak,
Aluminum has a higher cooling and contraction rate than steel so crater and centerline cracks are common. With TIG welding of aluminum we often see oxide inclusions and surface cracking of the base metal as well.
Do a quick google search on aluminum crack sensitivity curves to look for the specific compositions and material weldability. Otherwise the typical defects apply.

 
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