Method for casting objects with an improved hub core assembly

Details Method for casting objects with an improved hub core assembly Method for casting objects with an improved hub core assembly

2006-03-28

2006-03-28

Tran, Len (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S340000

Reexamination Certificate

active

07017647

ABSTRACT:
A method of casting an object, usually a railroad wheel, is provided. A graphite mold having a drag section and a cope section has an opening in the drag section allowing molten metal to be fed upwardly by pressure into the cast object cavity. A stopper pipe assembly extends through centrally located openings in the cope section and the drag section. The hub core seals against an opening in the drag section upon cessation of pouring to keep molten metal in the cavity in the mold. The hub core assembly is comprised of refractory material which the molten metal contacts thereby allowing the reuse of the hub core assembly.

REFERENCES:
patent: 1908741 (1933-05-01), Fahrenwald
patent: 2838816 (1958-06-01), Strom
patent: 2839802 (1958-06-01), Bean et al.
patent: 2990592 (1961-07-01), Hursen

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