Coating processes – Heat decomposition of applied coating or base material – Coating decomposed to form carbide or coating carbonized
Patent
1991-02-19
1992-08-11
Wityshyn, Michael G.
Coating processes
Heat decomposition of applied coating or base material
Coating decomposed to form carbide or coating carbonized
118 47, 118 501, 264 295, 264 296, 264 297, 427296, 427384, 427443, B05D 302
Patent
active
051377551
ABSTRACT:
An impregnating carbonizing process and apparatus which permit reduction in cost of consumable goods and can operate at a reduced cost and a heating and vacuum impregnating operation which requires a very long period of time can be performed on the outside of an expensive high pressure vessel to accomplish rapid carbonization and baking. The process comprises of inserting a porous shaped body of carbon and a block of impregnant into a specimen case, discharging gas from within the specimen case, heating the impregnant into a molten condition under a reduced pressure, inserting the specimen case into a high pressure vessel, admitting high pressure gas into the high pressure vessel and also into the specimen case so as to penetrate the impregnant into the shaped body of carbon, heating the shaped body to a high temperature, and discharging the high pressure gas to lower the pressure within the specimen case at a controlled rate in response to a pressure within the high pressure vessel to carbonize the impregnant. The apparatus is constructed to suitably carry out the process.
REFERENCES:
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patent: 3448719 (1969-06-01), Tate
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patent: 4454177 (1984-06-01), Feist
patent: 4514371 (1985-04-01), Jamet et al.
patent: 4709656 (1987-12-01), Fujiyama
Fujikawa Takao
Ishii Takahiko
Kabushiki Kaisha Kobe Seiko Sho
Wityshyn Michael G.
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