Quote:
Originally Posted by Eric H
So the problem seems to be sealing the thin metal ring to the thick metal parts.
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I don't imagine there's any way to weld the thin metal to the thick metal without cracking the glass or destroying the seal there.
I knew a guy who could weld aluminum cans together using a Plasma Welder, there's still a lot of heat involved though.
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One of our welders has TIG welded Coke cans too. It helps to have that level of skill, but it doesn't mean you can reduce the heat in other situations. Where you have to weld is too close to the glass and the rapid heating would be catastrophic.
I thought about suggesting brazing using preforms in a programmable vacuum furnace, but I don't know if the phosphors would survive. I've done similar brazing in a hydrogen atmosphere, but it might react with the phosphor. I don't know enough chemistry...
John
10-21-2009, 11:31 PM
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