Method of increasing strength of cast aluminum components

Details Method of increasing strength of cast aluminum components Method of increasing strength of cast aluminum components

1994-12-06

1996-12-17

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164 581, 164136, B22D 2720

Patent

active

055843344

ABSTRACT:
A method in particular, comprises the steps of: (a) preparing a mold having a sprue leading to a substantially horizontally oriented runner, at least one riser extending from the runner, and walls defining a mold cavity in communication with the riser; (b) providing a shallow reaction chamber in the runner containing grain refining inoculant solids therein, the inoculant having a surface exposed substantially tangentially to the flow of molten metal through the runner; (c) pouring a charge of molten aluminum into the sprue with a sufficient pressure head to fill the cavity, the flow being substantially laminar through the runner; and (d) inverting the mold substantially immediately after mold filling and prior to solidification of the metal in the mold cavity.

REFERENCES:
patent: 3961995 (1976-06-01), Alliot et al.
patent: 5057150 (1991-10-01), Reeve et al.
patent: 5100618 (1992-03-01), Dewing et al.
patent: 5163500 (1992-11-01), Seaton et al.

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