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using a welding rod that requires backing 1

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carbonear59

Mechanical
Mar 7, 2008
22
i need some guidance .every one knows it's common practice in tank building/vessel manufacture to weld from one side ,backgouge then weld from the other side (following Section IX welder and welding procedure requirements ) .
my question is this ; if the procedure being used calls for the SAW portion to HAVE backing ,is it permissible to use SAW to actually MAKE the backing with weld metal on one side ,then gouge from the other side and fill the joint up ? it seems like a logical approach but i dont know if it is acceptable according to Section IX. (using an electrode that calls for backing to MAKE the backing ,chicken and egg kinda stuff )
any help and applicable code references would be appreciated .
 
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The OP's question seems to revolve around the fact that his first weld (the one providing future backing) is on the FRONT side of the joint, not the back side. So, he is welding the open end of the bevel first, then back-gouging and welding the closed end of the bevel.
 
it does not matter what side is first, he is dealing with the procedure here.
his/her procedure will allow for metal and what type of metal or weld metal and what type of metal, if the weldmetal is the same rod/wire just say it.
in the procedure...
you ave to know what you are doing with the paperwork or ask your AI or ... if the AI doesnot know then you ask the AI supervisor or seek help... yes pay a little bit for consulting and you will get the best answers.
 
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