Metallurgical apparatus – Means for melting or vaporizing metal or treating liquefied... – By providing – treating or protecting environment – e.g. – vacuum
Patent
1996-03-04
2000-01-18
Zimmerman, John J.
Metallurgical apparatus
Means for melting or vaporizing metal or treating liquefied...
By providing, treating or protecting environment, e.g., vacuum
266231, 266235, 164 97, C22C 110, B22D 1100, B22D 1914
Patent
active
060155280
ABSTRACT:
A composite material mixture of free flowing reinforcement particles in a molten metal is solidified at a cooling rate greater than about 15.degree. C. per second between the liquidus and solidus temperatures of the matrix alloy. This high cooling rate imparts a homogeneous structure to the solid composite material. Care is taken to avoid the introduction of gas bubbles into the molten composite material while the mixture is stirred to prevent segregation of the particles. For viscous melts, an artificial surface layer such as a fiberglass blanket may be used to prevent entrapment of bubbles during pre-casting stirring. Additionally, gas bubbles are removed from the molten mixture by filtering and skimming.
REFERENCES:
patent: 1983578 (1934-12-01), Chandler
patent: 3017676 (1962-01-01), Ewon
patent: 3163895 (1965-01-01), Dewey
patent: 3510277 (1970-05-01), Schmidt
patent: 3839019 (1974-10-01), Bruno et al.
patent: 3848655 (1974-11-01), Sato et al.
patent: 4268564 (1981-05-01), Narasimban
patent: 4386958 (1983-06-01), Tyler et al .
patent: 4424956 (1984-01-01), Grant et al.
patent: 4473103 (1984-09-01), Kenney et al.
patent: 4704169 (1987-11-01), Kimura et al.
patent: 4759995 (1988-07-01), Skibo et al.
patent: 4786467 (1988-11-01), Skibo et al.
patent: 4943490 (1990-07-01), Bruski et al.
patent: 4961461 (1990-10-01), Klier et al.
patent: 5076340 (1991-12-01), Bruski et al.
F.M. Husking, "Compocasting of an Aluminum Alloy Composite Containing B.sub.4 C particulate", Sandra National Labs., SAND81-0976, UC-25, no month 1981, pp. 1-29.
Cleancast-High Performance Ceramic Filter/Flow Modifiers-Premier, brochure--no date, 6 pages.
Metals Handbook, 9.sup.th Ed., vol. 15, "Casting", no month 1988, pp. 90-91, 95-96, 308-315, 488-493, 748-749.
Bruski Richard S.
Hudson Larry G.
Jin Iljoon
Lloyd David J.
Skibo Michael D.
Alcan International Limited
Garmong Gregory
Zimmerman John J.
LandOfFree
Apparatus and process for casting metal matrix composite materia does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and process for casting metal matrix composite materia, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and process for casting metal matrix composite materia will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-560933