Process for casting light metals

Details Process for casting light metals Process for casting light metals

1998-03-24

1999-06-22

Ryan, Patrick

Metal founding

Process

Shaping liquid metal against a forming surface

164 72, 164122, 164 661, 164125, 164126, B22C 1700, B22C 300, B22C 2300, B22C 2704

Patent

active

059133538

ABSTRACT:
A process for casting light metals. The process includes preheating ingots of the light metal in a protective atmosphere before being introduced into a melting furnace wherein the molten metal is degassed and filtered before transference in a heated delivery tube to a covered holding furnace. The filtered melt is made quiescent to reduce its kinetic energy and allow inclusions to settle and form a purified melt. A vacuum is applied to a die cavity in a casting press to displace air residing therein with an inert atmosphere. The purified melt is then transferred in a heated delivery tube as a charge to the casting press under the inert atmosphere to prevent burning and formation of accompanying reaction products. Upon cooling, a light metal casting is produced in the absence of air with minimum defects and inclusions.

REFERENCES:
patent: 2660769 (1953-12-01), Bennett
patent: 2882142 (1959-04-01), Keating
patent: 3268960 (1966-08-01), Morton
patent: 3753690 (1973-08-01), Emley et al.
patent: 3833050 (1974-09-01), Kashuba et al.
patent: 3999593 (1976-12-01), Kaiser
patent: 4072181 (1978-02-01), Kostura et al.
patent: 4146081 (1979-03-01), Reis
patent: 4153100 (1979-05-01), Balevski et al.
patent: 4298187 (1981-11-01), Dantzig et al.
patent: 4391319 (1983-07-01), Heaslip et al.
patent: 4425932 (1984-01-01), Herman
patent: 4635706 (1987-01-01), Behrens
patent: 4658881 (1987-04-01), Sasaki
patent: 4691755 (1987-09-01), Kuriyama et al.
patent: 4798237 (1989-01-01), Nakano
patent: 4813470 (1989-03-01), Chiang
patent: 4817700 (1989-04-01), Milov et al.
patent: 4854370 (1989-08-01), Nakamura
patent: 4967827 (1990-11-01), Campbell
patent: 5076339 (1991-12-01), Smith
patent: 5114472 (1992-05-01), Eckert et al.
patent: 5205346 (1993-04-01), Kuhn et al.
patent: 5246055 (1993-09-01), Fields et al.
patent: 5263531 (1993-11-01), Drury et al.
patent: 5309975 (1994-05-01), Ohnishi et al.
patent: 5316070 (1994-05-01), Rogers et al.
patent: 5370171 (1994-12-01), Fields et al.
patent: 5388633 (1995-02-01), Mercer, II et al.
patent: 5393039 (1995-02-01), Smith
patent: 5435373 (1995-07-01), Drane et al.
Transactions, 17th International Die Casting Congress and Exposition, Oct. 18-21, 1993, Cleveland, Ohio, pp. 49-53.
At The Threshold, 48th Annual World Magnesium Conference, pp. 27-28.
Magnesium Properties and Applications for Automobiles, SAE SP-962, p. 71.
Product Design in Recyclable Al, Mg, Zn & ZA Alloys, The OEM Design Sourcebook, 2nd Ed., p. 80.

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