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Pipe welders please help

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发表于 2021-8-31 23:15:49 | 显示全部楼层 |阅读模式
Hello I'm new here. I'm practicing for a weld test and the print calls for a 4in sch40 pipe to be welded to a 4x4 3/8in plate in the 5g position. 60 root pass and 70 cap. I have welded a little pipe before. But when I make the root pass it just doesn't seem like I'm getting good penitration I have a pretty substantial landing on the pipe and I'm running at 90 with 50 dig with an 1/8in gap. I just would like to know if anyone has made this weld before and could offer me any suggestions. Also I don't know how many passes to make I'm doing 3 right now the root than a little weave than a big weave over that and I just don't know what's best. Attached Images
Reply:Are you running up or down on the 6010 root???Just a couple welders, big hammers, grinders, and torches.Work will free you.Men in dirty jeans built this country, while men in clean suits have destroyed it. Trump/Carson 2016-2024
Reply:Everything's up.
Reply:I have never seen this test but I think you may need to run hotter on the root because that plate is going to take more heat than two beveled pieces of pipe would.
Reply:A lot of times its harder to fuse to the plate, it welds to the pipe part good, but sometimes it does not fuse well to the plate.I would (though I've never taken a "official" welding test, but welded stuff like this,) would be to have a 1/8 land and gap (like you have)And make a circular motion holding longer on the side of the plate. Might get a pic of your root.As to the weave vs. stringer, sometimes you get to choose, some times your made to do what the spec calls for.Good Luck,~JohnJust a couple welders, big hammers, grinders, and torches.Work will free you.Men in dirty jeans built this country, while men in clean suits have destroyed it. Trump/Carson 2016-2024
Reply:For the root pass I'd run a J motion. Keeping the long part of the J on the plate. The curl of the J on the pipe. That way the majority of the heat in put into the plate. Don’t pay any attention to meI’m just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
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