A cheapo AC arc stick welder is fine for that. I welded up the steering on my ride-on mower yesterday with one.
(I'd like to know what bozo decided that applying the steering loads to a 90 degree bend in a piece of 1/4" diameter rod was a good idea? This is the third time it's fatigue failed, so this time I did it properly and reinforced it with some plate, rather than just sticking it back together.)