Thats my next band namepoor pen and peaky welds
hmmm... landrover chassis repairs with the tig is is then : /
hmmm... landrover chassis repairs with the tig is is then : /
How much up a creek are you??
Got a bottle of argon mix in Exeter.
good grief , my heart goes out to ya ,, I just put a new rear x member into a rust eaten and rotted lr chassis last thursday ,, granted it was 9 years old so you couldnt really expect more.
yep 2011 and needing a rear x member. But I wouldnt have liked to have done it with tig.
Ah ,,, youve left it too long , yes ,, overnight would do it .. even a humid afternoon .Sadly, i thought id done the welding. But then i left it for an afternoon, and its all rusted up again.
It doesn't let the puddle flow properly, and doesn't give penetration. Not really sure why it's fine on aluminium and not steel, but it just is.
have a search, there's loads of info floating about explaining why.
There's no AC cleaning action with plain DC currentprobably to do with AC cleaning action on ali?
If you used an oxidising gas with Aluminium the weld would be badly affected, porous, poor mechanicals and poor appearance due to high oxygen.......Ally oxidises on its own in the atmosphere.....when the wire is made it is shaved to remove the oxide etc thats built up during manufacture....but it soon oxidises itself again....its what gives ally the corrosion resistance........the lightly oxidised surface will give a degree of fluxing but its more to do with what would happen rather than trying to make it weld nicely.
4043 has high silicon which helps the metal flow...5356 doesnt have the Si so its often considered to be harder to use.
Shaving well is the key to making good wire and you may have noticed that some wires now are vac packed (to keep the as shaved condition)