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Long Bars and couplings

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发表于 2021-8-31 23:40:34 | 显示全部楼层 |阅读模式
I have to weld these a few times a year.  Using my equipment the money is good.  I do it by the piece.  Bars are 7/8" thick, about 6" wide and 36 to 46" long.  They weigh maybe 45 lbs give or take.  Some take 3 fittings some take four.  The chuck is on the rotator, The "Jig" that holds the fitting on sticks out the bottom of the plate and is round.  I place the bottom of the jig in the chuck.  There is a spacer on the table edge that keeps the piece in place the same height as the top of the chuck.Table runs at 3 rpm.   Pulsed spray is the mode of transfer.  I have to run it pretty hot because the 7/8" plate.  Wire is .030" LINCOLN Er70S-6 at 450 inches per minute.  Gas is 92% Argon, 8% Co2.   Average amps are 150.I start with the bar on my right, and weld until it almost hits me on the left.  At 3 rpm, weld takes less than 20 seconds because I don't even get a full revolution.  The center fitting in the picture, I stand way back.I asked the customer a while ago if I could post pictures and they said NO.  So I covered it up.DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:fire protection pipe fabrication shops do about the same thing with a BIG $$$ machine called a whirlybird. I don't know if that the real name or shop slang.  Nice little set up you got there.DayePound to fit, paint to match
Reply:Good looking work.All I could think of while looking at the base piece is grinding mill scale sucks!
Reply:I think its hot rolled then quench.  Some are easy, some are like bark.  It depends on which side the machinist started on.  All the ones in the pictures are the bark side.  It almost chips off.Real world weldin.  When I grow up I want to be a tig weldor.
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