Aluminium welding

  1. paul teggart Member

    Messages:
    5
    Location:
    Dungannon, county Tyrone, Northern Ireland
    Hi guys, I wonder of someone can help me with a few enquiries.
    BACKGROUND: My employers are considering manufacturing rollers from aluminium. these are 12" pipe with 1/2" wall thickness and a 1/2" side plate to be welded inside each side of the pipe (fillet).
    I'm the one they're looking to as I've welded it in the past with a spool gun and TIG, both for a different employer.
    My questions would be as follows:
    1. Should we fabricate with MIG or TIG?
    2. What are the pros and cons of these in regards to aluminium?
    3. Which gas to use?
    4. Any other point?
    Many thanks in advance guys for any replies.
     
  2. HMB

    HMB Member

    Messages:
    1,132
    Location:
    Essex near the Thames
    Mig it
    Lots of amps
    100% Argon
    Gets real hot quick
     
  3. HughF Forum Supporter

    Messages:
    3,575
    Location:
    Corfe Castle/Frome
    Mig, He/Ar mixed gas if you can afford it...
     
  4. Richard.

    Richard. Member

    Messages:
    11,350
    Location:
    Hertfordshire.
    If your employer is footing the bill a 400 amp pulsed mig with push pull torch system would be the ultimate solution
     
    Arclikeharrypotter likes this.
  5. Mee pre-moderated

    Messages:
    1,505
    Location:
    Here and There
    For production at speed then MIG every time.

    For high quality and finish then TIG.
     
  6. Kent

    Kent Member

    Messages:
    7,796
    Location:
    Bowland, Lanacshire,UK
    Some of the modern 4 wheel drive feeds are pretty darn good. Not something I get into now so this is second hand info from guys that do.
     
  7. Rrunnach

    Rrunnach www.interventiontechnolog y.com

    Messages:
    964
    Location:
    edinburgh
     
  8. Brad93

    Brad93 M J B Engineering

    Messages:
    2,029
    Location:
    Essex
    I'd be getting a rotary table/turntable and a pulsed mig
     
    Richard. likes this.
  9. Kent

    Kent Member

    Messages:
    7,796
    Location:
    Bowland, Lanacshire,UK
    Some big welds to lay 1/2 wall and 1/2" end plates. As production almost screams full automation if the quantity is there
     
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  10. Richard.

    Richard. Member

    Messages:
    11,350
    Location:
    Hertfordshire.
    Could be a very simple rig too. Small rotator hooked up to the units start signal and a means of taking the torch out of the welders hand. Torch could be fixed so no need for spendy robot systems and magic eyes.
     
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  11. Brad93

    Brad93 M J B Engineering

    Messages:
    2,029
    Location:
    Essex
    Lorch turntable and pneumatic arm. That's what I'd have. You'd be looking at a few grand but if you had enough bits to make you'd make the money back
     
  12. Richard.

    Richard. Member

    Messages:
    11,350
    Location:
    Hertfordshire.
    I wouldn't buy a lorch turntable. And if you have the welding set already it certainly wouldn't cost a few grand to automate that. A decent positioner/rotator and build your own way of holding the torch ridged in place. You could retract it with a manual operation slide.
     
    Kent likes this.
  13. Brad93

    Brad93 M J B Engineering

    Messages:
    2,029
    Location:
    Essex
    How come rich?
     
  14. Richard.

    Richard. Member

    Messages:
    11,350
    Location:
    Hertfordshire.
    Because for such a simple application it doesn't need pneumatics and a fancy digital lorch turn table. I wouldn't get any better productivity out of a £3k minimum system than I would out of a £1k system for that type of job. You can get a lovely rotator and make a retractable arm for the torch and get exactly the same results. You wouldn't even need to wire in for start and stop if you didn't want to do that. You could could kick it off manually in 4T and stop it the same way after 360°.
    Just my view. I used to fabricate a lot of parts and structures for automation welding equipment a while ago. Mainly cladding systems. This is as easy as it gets to make a nice system.
     
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