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Trevor Jones

wrote:
I have a variator from the CVT of a scooter and a part of it got
chipped off. I tried AC TIG welding it but i can't seem to make a
decent weld puddle.

I tried welding on a sample piece of aluminum sheet and my weld seems
to be fine on that one.

I don't know what's wrong but I was thinking maybe the variator isn't
aluminum since the piece just chipped off and didn't bend. But then a
very small portion of the aluminum rod did fuse to the variator.

Can aluminum be brittle like iron?

I tried sticking a magnet onto it but it's not magnetic.

Likely is, that it is a die cast alloy of aluminum, and probably
contains a fair amount of zinc.

It wont weld worth a pinch of ****, and the stuff that looks welded
may or may not be, when it comes to the crunch.

Pony up to the parts department, and pay the man. Maybe Ebay.

See if you can work out why it broke in the first place, if it was not
directly because of operator inputs, or the lack of, just to slow down
the rate of change of the new part to being another broken one.

Brittle and chipped, sounds like die cast alloy to me. Maybe an
aluminum alloy, possibly one of the Zamack family, or similar.

Cheers
Trevor Jones