mmanse

hiya

have got a 10mm hole in the bottom of my gear box and would like to know the best way to weld this?

i have a mig and can weld with that no problem but never welded alloy before. any advise would be great

cheers mark

G420 DEL

i dont think a mig welder will do the job, u need a tig.

bookwyse

As above MIG will deffo not be up to the job.

You need a good tig and also need to be very very good with it otherwise you'll end up blowing holes in the case.

My brother in law is an ex stainless and alloy fabricater who is working with my old man in the gearbox trade and it him about 3 months to master the art of welding the cases. Even now he only does it in very very special circumstances.

What box are you wanting to weld and why?

rog

iTrader: (2)

Better off trying to get a knackered box with a good casing, more hassle than it's worth TBH.

AstoN_B

iTrader: (1)

Stick welder can do it as long as it isn't too powerful. Can get cast and alloy rods for em.

xr2wishy

iTrader: (2)

personally i'd drill a nice hole, get a tap to suit and fit a short bolt to seal it up, welding won't help.
or chemical metal, or a metal plate shaped and drilled and tapped onto the casing and use some sealant between the plate and casing.

mmanse

thanks guys

its a ford galaxy 2.3 manual. a bolt snapped of the gear selector inside the box.
changed that and box is working fine just got the hole at the bottom where the bolt went through. gutted

cossie4i+

iTrader: (15)

Your alive then

Steve

tabetha

A mig will do it no problem, but will have to be a decent mig, as needs lots of heat input as alloy is such a good conductor of heat, can also as said be tigged or arcd, a local freindly tig place should soon sort it for you cheap enough.
tabetha

mmanse

thanks tabetha yeah have a good mig so will give it a go and see how it goes. lol worse that can happen is i put bigger hole in it i guess

steve long time no see mate. yeah still alive 'just' did wonder if i would see you at the pod on the rs day but as you might of probably guessed me car is knackered and tree had gone out for the day in the other one. how are you and family? my boy is one next month i cant believe how fast that has gone. but loving every bit of it, must catch up been to long!!!

saph_Al

iTrader: (2)

personally i wouldnt be migging it as u'l find it harder to control the flow of product (wire) into the hole and may end up with a large build up on the inside or even worse bits inside . I'd get the tig out on a medium heat with a 3mm upwards 5% sillicone filler rod and take your time, if not get someone else to do it . Cheers Ally

botters

iTrader: (2)

you can mig it no problem just get some ally wire and pureshield argon gas and a teflon liner for your welding torch to stop the wire sticking its how we do it at work never had a problem before just make sure its extremely clean before you weld