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5G Hot Pass

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5G Hot Pass

Postby Henry Utley » Mon Dec 18, 2017 9:29 pm

This is my first post on the forum, so bear with me...
I have started welding 5G 6 inch ID 40 wall pipe, with a 6010+++++ for the root and 7018 the rest of the way. The root pass is fine for me, but I have trouble with tons of slag in the toes of the hot pass. Any advise on this?
Thanks for your time,
-John Henry Utley
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Re: 5G Hot Pass

Postby Poland308 » Tue Dec 19, 2017 7:43 pm

3/32 7018 at 75amps. As long as the coupon is still hot from the root. How thick was your land on the root? And what was your gap?
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Re: 5G Hot Pass

Postby Henry Utley » Wed Dec 20, 2017 9:05 pm

The land is supposed to be 1/8 and the root opening is supposed to be 3/32. Land goes back and forth and root opening is usually a little wider.
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Re: 5G Hot Pass

Postby Poland308 » Wed Dec 20, 2017 11:18 pm

Keep the land at an 8th and make sure the gap is 3/32. I use a /8 6010 at about 75-80 amps, depending on the welder. Then run the hot pass with no weave just a steady pull.
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Re: 5G Hot Pass

Postby Henry Utley » Thu Dec 21, 2017 10:36 am

Is a 3/32 for the hot pass what D 1.1 code wants?
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Re: 5G Hot Pass

Postby Poland308 » Thu Dec 21, 2017 6:00 pm

the Test I took allowed for use of 3/32 or 1/8. But sch 40 pipe is so thin that it’s much easier to do with 3/32.

Edit
The test I took was for pressure pipe. Isn’t D1.1 for structural steel? There is probably a wps for your test. Any and all allowances and limitations are on that paper.
I have more questions than answers

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Re: 5G Hot Pass

Postby Henry Utley » Thu Dec 21, 2017 7:26 pm

Yep, it is structural code.
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Re: 5G Hot Pass

Postby Farmwelding » Thu Dec 21, 2017 9:26 pm

Poland308 wrote:the Test I took allowed for use of 3/32 or 1/8. But sch 40 pipe is so thin that it’s much easier to do with 3/32.

Edit
The test I took was for pressure pipe. Isn’t D1.1 for structural steel? There is probably a wps for your test. Any and all allowances and limitations are on that paper.

ASME code?

If it is for a job ever contact the test supervisor possibly?
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Re: 5G Hot Pass

Postby Poland308 » Thu Dec 21, 2017 9:50 pm

I have more questions than answers

Josh
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Re: 5G Hot Pass

Postby Henry Utley » Fri Dec 22, 2017 10:45 am

Its not for a job, I'm learning to weld in high school. I have been through open root stick, tig, and mig on plate but pipe is a whole different deal.
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