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An Aluminium welding task

Discussion in 'Car Repairs / Maintenance' started by DIYspanner, 26 Feb 2019.

  1. DIYspanner

    DIYspanner

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    Got a 3 in 1 ladder with a split at one of the treads.

    Not being an expert in this area, do MIG welders to do Alum welds with a suitable wire?

    Here's the task

    [​IMG]
     
  2. Burnerman

    Burnerman

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    Sure, no problem with that one but I would recommend plenty of practice.....its so easy to blow metal away when it has a low melt temperature!
    You need pure argon as a gas shield, too.
    John :)
     
  3. Tigercubrider

    Tigercubrider

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    Presumably this is for home use?

    We aren't allowed to fix even quite simple issues with our ladders. Even a build up of paint is enough to have them declared scrap.
     
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  4. ericmark

    ericmark

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    Welding aluminium is like wiping a lead joint, in both cases the metal does not change colour so very hard to judge when there is enough heat, also very easy to look as if welded but really only stuck together with flux.

    For a ladder for me it would be in the scrap bin and a new one.
     
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  5. EddieM

    EddieM

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    Yeah, I have to agree, welding Ali, I'm told, is difficult, If it were me I'd scrap it.
     
  6. DIYspanner

    DIYspanner

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    The ladders, this type, were in a neighbour's skip. They're doing a house clearance and they were happy for me to take them.

    The crack is the only thing wrong with them so its worth a punt to try and repair them for odd jobbing around the house. If the repair doesn't work, back into a skip they go.
     
  7. Tigercubrider

    Tigercubrider

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    You could try lumiweld which is a home solder style alloy welding kit
    But personally I'd skip it
     
  8. Brigadier

    Brigadier

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    I'd scrap it personally.

    Failing that, I'd use a mechanical repair: bolt some steel bar across the break.
     
  9. Belle427

    Belle427

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    I’d agree about putting it back in the skip, it’s bad practice to try and repair ladders like that.
    It’s just not worth it.
     
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  10. DIYspanner

    DIYspanner

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    Comments noted Gents, thanks!
     
  11. Burnerman

    Burnerman

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    If its for yourself ( he said carefully) I guess you could repair this with some aluminium channel and long pop rivets.....
    I had a set of fibre glass steps in with a similar issue, (repaired as above and stronger than original).
    The fibreglass tubes were timber filled....Maybe they were designed for Sparkies originally.
    John :)
     
  12. jj4091

    jj4091

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  13. Peter.N.

    Peter.N.

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    When I was doing diesel conversions I sometimes had to change the shape of a sump to fit the vehicle, what I used was one of those brazing attachments you can connect to your stick welder. It still wasn't easy as the alloy would suddenly turn to 'water' but I usually managed it. Warning though, cover your arms or you are likely to get 'sunburnt'.

    Peter
     
  14. Burnerman

    Burnerman

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    You can still get them Peter - after a struggle although the carbons are still readily available.
    I've done plenty of brazing with them, but never aluminium.
    John :)
     
  15. Peter.N.

    Peter.N.

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    I came across the hardware bit a while back John and found you could still get the carbon rods, so I got some, they will likely stay in the cupboard until I'm to old to use them but you never know.o_O:confused:

    Peter
     
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