Warped V-Band
#1
Warped V-Band
I made a beginner's mistake welding my first flange to the exhaust pipe. Because I want the pipe to turn ASAP out of the collector, I welded the flange to the very end of a bend instead of a straight section. The pipe wasn't fully round, so I welded one side, and then stretched the other half with a torch and hammer, welding an inch at a time, then reheating and stretching until it fit.
Then today, I put the other flange against it and the one I welded was about 1/8 inch unflat (new word, thank-you). I guess I'll have to cut it completely off and re-weld it. Maybe because the pipe will be round now, I can tack the flange all around and it won't warp when I finish-weld it.
I see a lot of talk about v-bands, but I don't recall anybody mentioning that they did the welding themselves.
Any tips? If not, thanks for listening to my dumb-assedness (I should write Mikester's Dictionary, huh?).
Oh, yeah, they're 3-inch stainless.
Then today, I put the other flange against it and the one I welded was about 1/8 inch unflat (new word, thank-you). I guess I'll have to cut it completely off and re-weld it. Maybe because the pipe will be round now, I can tack the flange all around and it won't warp when I finish-weld it.
I see a lot of talk about v-bands, but I don't recall anybody mentioning that they did the welding themselves.
Any tips? If not, thanks for listening to my dumb-assedness (I should write Mikester's Dictionary, huh?).
Oh, yeah, they're 3-inch stainless.
#4
I AM A MOTHERF*CKER
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1) tack it in 6 places
2) do a c-stitch weld to keep the gas on the current puddle (and don't do the circle stitch -- too much heat). Also, try to get most of the C on the pipe and just drag the tip up and over the edge of the v-band to get the puddle.
3) keep moving at a good pace -- get your penetrating heat, puddle a little and move.
Also, there are quality v-bands, and not-so-quality. I bought from 2 different vendors. One vendor's stuff was nice and thick, the other... eh.
2) do a c-stitch weld to keep the gas on the current puddle (and don't do the circle stitch -- too much heat). Also, try to get most of the C on the pipe and just drag the tip up and over the edge of the v-band to get the puddle.
3) keep moving at a good pace -- get your penetrating heat, puddle a little and move.
Also, there are quality v-bands, and not-so-quality. I bought from 2 different vendors. One vendor's stuff was nice and thick, the other... eh.
#6
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Originally Posted by MikeGyver
My flanges are almost 1/8 inch thick at the part that gets welded to the tube. Would that rank as quality or not-so-quality?
Are you describing a TIG method?
Are you describing a TIG method?
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#8
No big deal, I cut it off (1/2 last night, 1/2 tonight), tacked it about every 1 1/4 inches, and tigged it with tig-size welds instead of big-*** mig-looking beads. I keep forgetting that because I don't weld very often, I am a beginner at the start of every project, and will therefore make beginner mistakes. Thanks for your replies.
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