Coating apparatus – With cutting – punching or tearing of work – Web or sheet work
Patent
1974-04-18
1977-06-28
Stein, Mervin
Coating apparatus
With cutting, punching or tearing of work
Web or sheet work
118 495, 148154, 277135, 427251, C23C 1302
Patent
active
040318516
ABSTRACT:
Fabrication apparatus is described for improving the ultimate strength of boron and other high strength filaments. In the apparatus, a gradual cooling zone is placed at the exit end of the reaction zone to prevent the sudden thermal shock normally encountered when hot boron filaments exit into the ambient atmosphere. A preheating zone can be added prior to the entrance into the reaction zone if desired. Additionally, the entrance and exit ends of the reaction zone are sealed with a molten metal, such as tin, heated to elevated temperatures close to the reaction temperature. These molten metal electrodes tend to minimize deposition of weak boron due to a low temperature region immediately following the reactor entrance and help to eliminate sudden thermal shocks to the filaments at the exit.
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Brook David E.
Stein Mervin
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