5gr weld test?

Tue, 31 Aug 2021 09:44:28 GMT

go to see Welding Machine for 5gr weld test?

Might have to take a 5gr pipe test and from what I was told it will be a piece of I beam tacked to either the right or left side.   Does anyone have any pictures of this test?  Have never had to take a test like thisThanks,Mike
Reply:Originally Posted by 2005tritontr186Might have to take a 5gr pipe test and from what I was told it will be a piece of I beam tacked to either the right or left side.   Does anyone have any pictures of this test?  Have never had to take a test like thisThanks,Mike
Reply:The r stands for restricted - restricted access. They put stuff in the way to see if you can weld in tight spots. I took a 6GR that had the coupon tacked in the middle of four pipes placed at all 4 corners. Maybe 6 or 8 inches of clearance. Once I took a tube welder test that was set up underneath a fab table. It was a 10 inch 5G with 10 inch pipes running on both sides and top and bottom. Talk about a hard test, but I passed. My brother was laughing at me the whole time, he only took the pipe welder test so he didn't have to go through all those gyrations.
Reply:I found a video of the 6G test I took:
Reply:Originally Posted by TimmyTIGThe r stands for restricted - restricted access. They put stuff in the way to see if you can weld in tight spots. I took a 6GR that had the coupon tacked in the middle of four pipes placed at all 4 corners. Maybe 6 or 8 inches of clearance. Once I took a tube welder test that was set up underneath a fab table. It was a 10 inch 5G with 10 inch pipes running on both sides and top and bottom. Talk about a hard test, but I passed. My brother was laughing at me the whole time, he only took the pipe welder test so he didn't have to go through all those gyrations.
Reply:Originally Posted by TimmyTIGI found a video of the 6G test I took:
ReplyTimmyTIG - Questions:- Would you normally view the weld as you're doing it there from the inside, the outside, or both/whatever's easiest?- How much weld reinforcement would typically be allowed on the inside on a test like that? 1/16"? 1/8"?- Amperage: Would welding like that normally be done with lift-arc where you wouldn't have any current control, or could you ramp amperage up and down?Syncrowave 250DXMiller 330 A/BPMiller Big Blue 251D
Reply:First off, that's not me in the video. I just posted that because it looked like the test I took. The one I did was a super coupon. I always do whatever's easiest. Inside reinforcement usually depends on the pipe thickness. Our shop says 1/4 inch thick and down is 1/16th max reinforcement. Thicker than that, 1/8th is allowed. IME, most places you test don't have any kind of amperage adjustment, other than on the machine.Last edited by TimmyTIG; 10-02-2019 at 10:12 PM.
Reply:Originally Posted by TimmyTIGFirst off, that's not me in the video. I just posted that because it looked like the test I took. The one I did was a super coupon. I always do whatever's easiest. Inside reinforcement usually depends on the pipe thickness. Our shop says 1/4 inch thick and down is 1/16th max reinforcement. Thicker than that, 1/8th is allowed. IME, most places you test don't have any kind of amperage adjustment, other than on the machine.
Reply:Another question for the guys that do this kind of work: Are you generally using scratch start for this kind of welding? And if so, is there ever a problem with tiny bits of tungsten getting into the workpiece and possibly causing a problem on the inspection (in an x-ray test, for example)?Also, TimmyTIG, what's a "super coupon"?Last edited by Kelvin; 10-03-2019 at 07:57 AM.
Reply:You'd have to break off a pretty big chunk to have it get called on x ray. Some guys will flick the wire onto the tungsten to fire up, keeps the tungsten off the pipe. Super coupon is thicker than the one in the video, qualifies you to weld any thickness:https://wttiweldtestcoupons.com/prod...ega-coupon-set
Reply:Originally Posted by TimmyTIGYou'd have to break off a pretty big chunk to have it get called on x ray. Some guys will flick the wire onto the tungsten to fire up, keeps the tungsten off the pipe. Super coupon is thicker than the one in the video, qualifies you to weld any thickness:https://wttiweldtestcoupons.com/prod...ega-coupon-set
Reply:It's going to be a combo test.  Tog root/hot 7018 fill cap
Reply:Some of the actual welds are harder than the test.www.urkafarms.com
Reply:No doubt. They like to put them in the corner of the scaffold on the floor. I had to go re-do a 10 inch chrome weld that a young welder had started on and messed up. Inspector shot down the root , they had to cut it out. Told me to get my stuff and go up there and bail them out. This was in the pipe rack, with pipes all around. They had built a scaffold with about a foot and a half of clearance on both sides, and he had plastic running around that for a windbreak. 400 degree preheat on the chrome. I asked him how in the hell he ever thought that scaffold was good enough to make that weld without getting burnt up. He wanted to make a showing!I told them they had to fix that sh!t before I was gonna fire up on it, they got the scaffold crew over there immediately.