Plastic article or earthenware shaping or treating: apparatus – Ultra high pressure generating device
Patent
1990-12-06
1992-06-16
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Ultra high pressure generating device
4251746, 4254051, B29C 3500
Patent
active
051220431
ABSTRACT:
An electric pulsed power vacuum press assembly for fast pulse heating of electrically conductive materials at high pressures is disclosed. The fast pulse capability is provided for by a current path (49) that is characterized by extremely low inductance and resistance. The low inductance of the press structure is achieved through the use of parallel plate (52), (56) and coaxial (64), (98) transmission line elements in the circuit. The use of a vacuum environment (46) reduces contamination of the material being processed. The press is useful for achieving fine scale adiabatic heating in dielectric/conductor mixtures (11) such as graphite and diamond, allowing for extreme heating of the conductive phase with minimal heat transfer to the dielectric phase during the heating pulse. Fine scale adiabatic heating enables phase changes and consolidation to be achieved in a composite with minimum energy input and minimum heating of the press structure.
REFERENCES:
patent: 2920172 (1960-01-01), Stallard
patent: 2941241 (1960-06-01), Strong
patent: 2941242 (1960-06-01), Hall
patent: 2941243 (1960-06-01), Bundy
patent: 2941248 (1960-06-01), Hall
patent: 2944289 (1960-07-01), Hall
patent: 3137896 (1964-06-01), Daniels
patent: 3350743 (1967-11-01), Ishizuka
patent: 3436182 (1969-04-01), Ishizuka
patent: 3488153 (1970-01-01), Bundy
patent: 3548190 (1970-12-01), Sclar et al.
patent: 4097208 (1978-06-01), Ishaizuka
patent: 4097274 (1978-06-01), Bakul
patent: 4102679 (1978-07-01), Arvela
patent: 4225300 (1980-09-01), Latter
Metals Handbood, Ninth Edition Erhard Klar, pp. 501-519.
G. R. Gathers, J. W. Shaner, and R. L. Brier, Rev. Sci. Instrum., vol. 47, No. 4, Apr. 1976, pp. 471-479.
Bushey Scott
Woo Jay H.
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