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Thread: TIG and HVAC

  1. #1

    Default TIG and HVAC

    Just out of curiosity has anyone here ever TIG welded a HVAC lineset? Usually they are brazed with an oxy/ace torch... but I would think TIG would be a possible alternative.

    Shane
    Everlast PowerTig 200DX
    Everlast Supercut 50P
    I need a MIG.... which one to buy:
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  2. #2

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    I my self oxy/ace torch all my ac fittings and evap or condenser repair , tig is hard to control on thin aluminum tubing http://www.muggyweld.com/?view=sitemap
    EVERLAST 250 EX , EVERLAST I-MIG 205 , EVERLAST spool gun NOW have 2 EVERLAST POWER PLASMA 50 plasma cutter's , LINCOLN 175HD MIG WELDER , VICTOR TORCH SET and many more tools to many to list

  3. #3

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    I was thinking for the line sets. Copper to copper or brass to copper. Not Aluminum.
    Everlast PowerTig 200DX
    Everlast Supercut 50P
    I need a MIG.... which one to buy:
    I-Mig 160, I-Mig 200, or a MTS 160

  4. #4

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    i like the ssf-6 rod . or just regular brazing rod
    EVERLAST 250 EX , EVERLAST I-MIG 205 , EVERLAST spool gun NOW have 2 EVERLAST POWER PLASMA 50 plasma cutter's , LINCOLN 175HD MIG WELDER , VICTOR TORCH SET and many more tools to many to list

  5. #5
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    Remember you can also braze with TIG, no flux needed, I've done that a lot on steel, parts with silicon bronze rod. I even soldered some copper plumbing fittings once with a TIG torch as there was no other source of heat around. So for copper, with TIG, you can solder, braze or weld. Brass can be tricky cause the zinc can boil out, it all depends on the particular alloy. Some are weldable, some not.
    Long arc, short arc, heliarc and in-the-dark!

  6. #6

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    you can tig but i think welding with gas works better since even heat and sorta hard to sweat with a tig
    EVERLAST 250 EX , EVERLAST I-MIG 205 , EVERLAST spool gun NOW have 2 EVERLAST POWER PLASMA 50 plasma cutter's , LINCOLN 175HD MIG WELDER , VICTOR TORCH SET and many more tools to many to list

  7. #7
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    Quote Originally Posted by Rodsmachineshop View Post
    ...sorta hard to sweat with a tig
    I never said it was easy.
    Long arc, short arc, heliarc and in-the-dark!

  8. #8

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    lol tried tig welding some beer cans together , now that hard . we need to have a welding soda or beer can together contest lol
    EVERLAST 250 EX , EVERLAST I-MIG 205 , EVERLAST spool gun NOW have 2 EVERLAST POWER PLASMA 50 plasma cutter's , LINCOLN 175HD MIG WELDER , VICTOR TORCH SET and many more tools to many to list

  9. #9
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    Quote Originally Posted by Rodsmachineshop View Post
    lol tried tig welding some beer cans together , now that hard . we need to have a welding soda or beer can together contest lol
    There is always aluminum foil...
    Long arc, short arc, heliarc and in-the-dark!

  10. #10
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    Brazing copper tube with a rosebud or a cutoff tip using Sil-Fos 15% silver alloy is the more common method and TIG welding might work well too but you would have a harder time visually determining the copper pipe temperature.
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  11. #11

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    Yea that is what I do but figured TIG might give better welds and be cheaper in the long run.
    Everlast PowerTig 200DX
    Everlast Supercut 50P
    I need a MIG.... which one to buy:
    I-Mig 160, I-Mig 200, or a MTS 160

  12. #12

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    Quote Originally Posted by Rambozo View Post
    There is always aluminum foil...
    My bro in law said his welding teacher welded chewing gum wrapper togather. I figured it was BS as all I have ever seen was paper backed with super thin AL.
    Everlast PowerTig 200DX
    Everlast Supercut 50P
    I need a MIG.... which one to buy:
    I-Mig 160, I-Mig 200, or a MTS 160

  13. #13

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    Quote Originally Posted by ShaneJackson View Post
    My bro in law said his welding teacher welded chewing gum wrapper togather. I figured it was BS as all I have ever seen was paper backed with super thin AL.
    That's pretty standard as a demo at automotive / car shows. There are almost always guys at Carlisle PA that demonstrate their new welding equipment by welding gum wrappers together. Similar to alot of teh aluminum brazing rod guys.
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  14. #14

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    I would love to see that. Im guessing it takes a lot of practice. Humm... Time to hit youtube.
    Everlast PowerTig 200DX
    Everlast Supercut 50P
    I need a MIG.... which one to buy:
    I-Mig 160, I-Mig 200, or a MTS 160

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