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aluminum welding

aluminum welding

aluminum welding

(OP)
hi everybody,
I want to know that for aluminum welding with MIG process is it necessary to purge the root side,we have backing ring for the 10" aluminum pipe.(bus bars for the power plant)
thanks.

RE: aluminum welding

The answer to your question is you do not need backing gas for the weld root.

RE: aluminum welding

Last but not least, here is one other web site that provides general recommendations for welding of aluminum by process, recommended filler metal, shielding gas, etc.

http://www.jwharris.com/welref/procs/

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