Inconel root

by Jesse
(Ottawa IL)

Whats the best application for the root pass on an inconel butt weld joint?

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I have always used the dip and keyhole technique so that I can watch it go in.
3/32 filler metal, about 50 to 65 amps depending on gap, bevel angle, and land.

inconel is not very thermally conductive so heat builds up quickly. Its easy to penetrate too much if you are not careful. A foot pedal amperage control is a big help.