Metallurgical apparatus – Means for melting or vaporizing metal or treating liquefied... – By providing – treating or protecting environment – e.g. – vacuum
Patent
1994-02-07
1996-07-02
Lavinder, Jack W.
Metallurgical apparatus
Means for melting or vaporizing metal or treating liquefied...
By providing, treating or protecting environment, e.g., vacuum
266235, 266216, 164417, 164 97, B22B 1100
Patent
active
055314252
ABSTRACT:
A method and apparatus for preparing a continuous flow of castable composite materials of nonmetallic particles in a metallic matrix, wherein particles are mixed into a molten metallic alloy to wet the molten metal to the particles, and the particles and metal are sheared past each other to promote wetting of the particles by the metal. The mixing occurs while minimizing the introduction of gas into the mixture, and while minimizing the retention of gas at the particle-liquid interface. Mixing is done at or below a maximum temperature whereat the particles do not substantially chemically degrade in the molten metal during the time required for processing, and casting is done at a temperature sufficiently high that there is no solid metal present in the melt.
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B. F. Quigley et al., "A Method for Fabrication of Aluminum-Alumina Composites", Met.Trans. A, vol. 13A, Jan. 1982 (pp. 93-100).
Bruski Richard S.
Schuster David M.
Skibo Michael D.
Alcan Aluminum Corporation
Garmong Gregory
Lavinder Jack W.
Miner James
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