Was mentioned a while back about Tig welding in a vacuum. Just reading an old 1966 Motorcycle mag and came across this article welding the frame of a BSA competition scrambler in a vacuum chamber. Interesting.
Surely there would be no ionisation of the gas and so an arc would not be stable or get any heat? If it even arcs up?
Probably only robots could weld in a vacuum, your gloves would be expanded outwards I would have thought. I imagine by saying vacuum chamber they mean a purge chamber that has been vacated of air then filled with argon.
Dunsfold had chambers like that, infact a welder near me that did a lot of work for the helicopter place next door made one.
I never looked at the one near me but when I was last in Dunsfold we had a good look at one, it was basically an old oil drum with a vent at the top.
Was the competition frame a titanium Goldie frames? I used to do work for a Goldstar specialist, he had a cracked titanium frame on his wall, he said
the problem was they broke whatever the frames were made of, but you couldn't braze up a titanium frame in a field.