tincan-chris
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- 62
hi, i want to weld some alloy - a trampoline leg... i got alluminium weld wire ... the allloy to weld is 2-3mm.. what advice can you give me??
- Thread starter tincan-chris
- Start date
Cant offer any real advice as I have never touched ali with a welder.
Have you read the first two links about using a mig for ali here:
http://www.mig-welding.co.uk/metals.htm
Have you read the first two links about using a mig for ali here:
http://www.mig-welding.co.uk/metals.htm
- Messages
- 17,540
hi, i want to weld some alloy - a trampoline leg... i got alluminium weld wire ... the allloy to weld is 2-3mm.. what advice can you give me??
Let someone else do it.
Alu welding with a mig is quite difficult and can end up very messy if it goes wrong.
It's completely different to welding steel, as you start you may find it difficult to tell when the weld pool is established then you'll have to go like the clappers to avoid blowing through.
Travel speed is much faster than when welding steel.
What machine do you have?
tincan-chris
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- 62
sealey super 150
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- 17,540
Is it set up for aluminium, i.e teflon liner and pure argon?
Your machine should be able to do it but as I said, it's not easy. Practice plenty before tackling the job, I'd imagine it has to withstand a fair bit of flexing so you need it nice and strong.
Your machine should be able to do it but as I said, it's not easy. Practice plenty before tackling the job, I'd imagine it has to withstand a fair bit of flexing so you need it nice and strong.
tincan-chris
Member
- Messages
- 62
no its not set up for ally welding... ive decided to give tryin to weld ally a miss for now
- Messages
- 17,540
Unfortunately it's not as simple as chucking a roll of alu wire in and firing it up. You need to try and get the soft wire feeding as smoothly as possible, hence the teflon liner, oversize tip to reduce drag, pure argon, lots of practice, wing, prayer etc.
