Obviously keeping the metal clean is a big part of welding, But is there anything else to look out for?

Will it warp, Does it need treating before you weld it, Will it be as good as welding non-cast metal.


Any help would be good

 

if you need to ask then i don't suggest you have a go your self ,ally can be hard to weld there are so many different types of road for it ,what is it you want to weld ?? in regards to it warping?

 

Not doing it myself, just interested in what happens and how easy it is to do.

I only done a handful of welding so was just interested in what its like doing cast, as for warping, dunno, was just a question.

I've heard allsorts, like you have to heat up the cast ally before welding etc, so just wondered if it could ruin what you want to weld, and how do you stop it.

 

genraly you would only pre head thick ally cast or not and you wouldn't heat it that much its just to help you having the same sort of heat in the part from the start of weld to end of it, welding any metal will make it move about but depending on what it is there are ways of minimizing it

 

Piece of cake if you know how.
As said depends what it is, and shape as you can clamp it down to stop warp.
You apply heat gum, that stops most of the heat going elsewhere.
I have welded m/bike casings where chain has jumped etc and taken a chunk, not had a problem yet as tig is so controllable, bloody hot but very localised too.
I have even welded a few areas around where bearings went in these cases with no noticeable distortion.
I always heat the surrounding area on lighter alloys, depends what alloy you are talking about.
tabetha