welding birmabright ally

  1. kernowcam Member

    Messages:
    78
    South West uk
    hi
    i am restoring an old land rover. the body panels are aluminium birmabright. Any advice on what i can do with the stress cracks where typically the panel is bent and fractured? Would changing my mig to aluminium wire and argon? gas do the trick or am i wasting my time??? the panels are obviously thin admy welding skills need improving. thoughts on a post card please. ian
     
  2. Hitch

    Hitch Moderator Staff Member

    Messages:
    12,337
    Somerset
    Not sure about miging birmabright... its an alloy of aluminium and magnesium, much the same, but it does make a difference for welding as the birmabright work hardens and cracks easier.
    I can tell you mag/alu alloys are easily tig welded and gas welded.
    For a thin guage sheet like a panel just use pure argon...(if it were anything realy serious you use an argon/helium mix)
    Im not sure on the magnesium content of birmabright, if it is high (above say 5% Mag.) you should use a filler wire with the same makeup as the base metal.
     
  3. kernowcam Member

    Messages:
    78
    South West uk
    thanks for that.
    i only have a mig!!
    i undertand from the land rover maunal that they suggest gas welding the stuff and filler is easily found from scrappanels. only one problem i have never toughed a gas set.
    im in plymouth tomorrow funnily enough.
    looking for a s/h 2 gauge co2 reg.
    regards
    ian
     
  4. Hitch

    Hitch Moderator Staff Member

    Messages:
    12,337
    Somerset
    Dunno about a secondhand one, but theres loads of places to get a new one :lol:
    BOC in Cattedown, Wellington Welding in Cattedown Wharfes, Parkins Industrial Supplies (MST) on Lee Mill industial estate....

    I take it you only have a single stage regulator at the moment then?
     
  5. Hitch

    Hitch Moderator Staff Member

    Messages:
    12,337
    Somerset
    Filler is a term use for the welding wire used Ian, not patches.
    Should have said filler wire! :)
     
  6. kernowcam Member

    Messages:
    78
    South West uk
    assuming boc will be expensive.
    already have a boc argon reg but frustratingly it has a male bullnose connector not the female co2!! shame
    the new co2 regs usually fit co2 and come with an argon adaptor
    ian
     
  7. Hitch

    Hitch Moderator Staff Member

    Messages:
    12,337
    Somerset
    Ian, what do you use your co2 for? could you use a ar/c02 mix? just have the 1 reg?
     
  8. kernowcam Member

    Messages:
    78
    South West uk
    using co2 for general mils welding at home.
    I used to have a boc cylinder but decided due to lack of use and onging costs per year for a cylinder that was not being used to ditch them. Hence co2 option with 'pub gas' or buy own co2 5kg cly from perranporth for £56 (5KGS) and £7 per refill. Would last for ages and no ongoing costs.
     
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