MIG or FLUX core root pass

by Hugo Garcia
(Mexico)

In a full pen welding when the back-gouging is not possible due to the the size of the part.

Can I use flux core for the root pass or I have to consider MIG/TIG for this root pass.
thx.


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I believe flux core is possible provided you can qualify a procedure.

AWS D1.1 provides for many prequalified welding procedures, but outside of those, requires extensive testing to prove out the procedure.

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