Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1996-12-16
1998-09-08
Hail, III, Joseph J.
Metal founding
Process
Shaping liquid metal against a forming surface
164900, B22D 1802, B22D 2300
Patent
active
058031545
ABSTRACT:
In a thixocasting process, a casting material is subjected to a heating treatment to prepare a semi-molten casting material having solid and liquid phases coexisting therein, and then, the semi-molten casting material is poured into a cavity under a pressure. A through-hole for applying a constricting effect to the material is provided in a flow path for the semi-molten casting material leading to the cavity in a casting mold. A material deforming pressure P.sub.1 immediately before the semi-molten casting material flows into the through-hole is used as a parameter. For example, the material deforming pressure P.sub.1 is equal to or lower than 6.7 MPa, it is determined that the material is satisfactorily filled in the cavity.
REFERENCES:
patent: 4011901 (1977-03-01), Flemings et al.
patent: 5394931 (1995-03-01), Shiina et al.
Communication.
International Cast Metals Journal, vol. 1, No. 3 (Sep. 1976).
Numerical Simulation of Thixoforming (A. Zavaliangos and A. Lawley), Journal of Materials Engineering and Performance (Feb. 4, 1995, No. 1).
Saito Nobuhiro
Sugawara Takeshi
Hail III Joseph J.
Honda Giken Kogyo Kabushiki Kaisha
Lin I.-H.
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