Method of die casting spheroidal graphite cast iron

Details Method of die casting spheroidal graphite cast iron Method of die casting spheroidal graphite cast iron

2006-11-14

2006-11-14

Lin, Kuang Y. (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S113000

Reexamination Certificate

active

07134478

ABSTRACT:
A method of die casting spheroidal graphite cast iron able to prevent formation of chill crystals to allow the crystallization of fine spheroidal graphite and simultaneously prevent the formation of internal defects, including the steps of preparing a die formed with a heat insulation layer at inside walls of a cavity, filling molten metal having a composition of the spheroidal graphite cast iron through a runner into the cavity, closing the runner so as to seal the cavity right before the molten metal in the cavity starts to solidify, and allowing the molten metal to solidify by the action of the inside pressure caused by crystallization of the spheroidal graphite in the sealed cavity.

REFERENCES:
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patent: A 09-239513 (1997-09-01), None
patent: A 09-239514 (1997-09-01), None
patent: A 2000-45011 (2000-02-01), None
patent: A 2000-288716 (2000-10-01), None

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