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What Chemical Cleans Tungsten?

KINDLY ADVISE THE CHEMICAL TO CLEAN TUNGSTEN ROD 1 MM DIA FOR USE IN MAKING SEALS IN BOROSILICATE (CORNING GLASS) TO MAKE VACUUM TIGHT SEALS. WE MANUFACTURE MERCURY SWITCHES.

S.P.Tuteja
EXPORT IMPORT CONSORTIUM - ambala cantt, 133 006, India
2000

2000

One reference (Metals Handbook, Volume 5: Surface Engineering American Society for Metals, Metals Park Ohio, USA 44073) has a method which applies a few millionths of an inch of nickel from a Watts nickel solution, heat in a vacuum with heat, then Wood's nickel strike, then I would plate 0.0005 inches of Watt's nickel, if allowed, then try to seal them in.

Tom Pullizzi
Falls Township, Pennsylvania

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