3mm weld on 1/8 alum

[IanHerbert]

3mm weld on 1/8 alum

Fillet and square groove

0 prep right now, but I'm trying to get that changed.

3.5 mm measured the usual way by leg length

Material is 3003

Filler 1100

And using a miller dynasty.

[IanHerbert]

Hi all

I've been asked to archive a 3mm tig weld on 1/8th aluminium with 100% penetration.
I can't go bigger than 3.5 mm.
There has to be some burn through to be machined off after.

I don't think this can realistically archived.
Does any one have any ideas?...

[IanHerbert]

sintered iron

Didnt work

[IanHerbert]

sintered iron

Thanks il check it out.

[IanHerbert]

Has anyone every successfully welded sintered iron to mild steel?
What rod and process did you use?

Any help would be greatly appreciated

[IanHerbert]

I've got a problem with a part we are trying to make.
It's long thin steel with some nuts welded on it.
I have a tolerance of 0.5mm.
And as soon as I take it out of the gig it's over 1 mm out. And it's execentuated down the piece.
I've tried welding it as cold as pos, doing...

[IanHerbert]

food grade stainless

Where in the uk u from boiler rat?

[IanHerbert]

Tig welding 5052 Aluminum. which filler ?

Either filler is good unless you are anodising it then go for 5356.
4043 will be more ductile and less likely to crack but on the other hand 5356 is a stronger material but tends to crack if you don't cap the weld properly.

[IanHerbert]

food grade stainless

Job complete. Customer more than happy.
Will have to change my purge setup tho.
Using a Y piece in the gas line didn't work too well, had Little flow to my torch. Just enough.

[IanHerbert]

I'm looking to take some of the CWB modules. Does anyone have any modules they want to sell? I can't afford to buy them. So expensive.

[IanHerbert]

food grade stainless

Yeah I will.

[IanHerbert]

food grade stainless

I'm gonna purge them as I can't get to the back. It's thin material but I would still like some filler on hand incase I get a bit trigger happy. I know I'm gonna be using less than 30 amps and using a gas lense.

[IanHerbert]

I know 316 is more expensive but cost is not the issue. If I use a copper back plate won't i still get sugaring if the temp gets too hot?
I would like to get 100% pen as its holding liquids.

I haven't done much in the food grade side of welding. I weld aircraft parts and parts made...

[IanHerbert]

I've been asked to weld some food grade containers. They don't look anything special but what filler rod should I be using? Is 308 ok?

I spoke to a friend and he said that I should be using ER347.

Any help would be greatly appreciated.

[IanHerbert]

Does anyone know why 4043 filler rod turns black when anodised?
What causes it and is there a way to get around it without changing rod?