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I am getting ready to take a test with 2 inch pipes .154 thickness in the 6g position, can someone help me & tell me how much heat should I use because I'm not used to welding copper nickel pipe with tig, thanks in advance
- Otto Nobedder
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Joined:Thu Jan 06, 2011 11:40 pm
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I've never done it, damnit, but I'll clarify for others before confusion starts...
Cu-Ni (copper-nickel) can probably be brazed, but is most commonly welded.
I've been told the settings are similar to stainless of the same sizes, and to expect a "dead" puddle, that does not wet out readily, requiring more torch manipulation while feeding rod.
I think there is Cu-Ni experience here, so be patient. Maybe the guru will comment, as well.
Steve S
Cu-Ni (copper-nickel) can probably be brazed, but is most commonly welded.
I've been told the settings are similar to stainless of the same sizes, and to expect a "dead" puddle, that does not wet out readily, requiring more torch manipulation while feeding rod.
I think there is Cu-Ni experience here, so be patient. Maybe the guru will comment, as well.
Steve S
noddybrian
- noddybrian
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Joined:Thu Jan 24, 2013 12:13 pm
Does'nt help much but assuming this is similar to the alloy widely used in the UK called " Kunifer " I've done plenty in sizes from 1/8" up to 4" ( very common in heat exchangers & low volume boilers ) - but it's always been silver soldered - I never heard of it being welded - I guess as both base metals weld then the alloy should as well - if I get time I might try a bit - think there's half a length of 4" still on the metal rack if it will clean up - when silver soldering it unless it's really new & spotless it's normal to clean it with " spirit of salts " first.
- Otto Nobedder
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Weldmonger
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Joined:Thu Jan 06, 2011 11:40 pm
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Location:Near New Orleans
In the US, the most adverts I see for Cu-Ni welding are shipyard jobs, and my assumption is it has to do with moving steam around.
Steve S
Steve S
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