Metal casting system, engineered molds, process and articles...

Details Metal casting system, engineered molds, process and articles... Metal casting system, engineered molds, process and articles...

2011-03-01

2011-03-01

Lin, Kuang (Department: 1735)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S119000, C164S259000, C164S306000, C164S335000

Reexamination Certificate

active

07896059

ABSTRACT:
Disclosed is a metal casting system, an engineered mold for use therewith, a process for utilizing the system and mold, and articles having a clean, oxide-free sand casting of molten metals that have been produced under an inert environment. This is especially advantageous for making automotive and airplane parts from the manufacture of lightweight metals, and more especially for the production of magnesium parts in order to reduce weight while maintaining properties found in other lightweight metals. Currently, sand cast articles are being used for automotive, aerospace and semiconductor parts and other industrial applications. The advantages of the present invention include a greatly reduced cycle time as conventional gating systems no longer apply; an ability to pour highly reactive metals by the use of a protective environment; even greater reduced cycle times because speed of metal delivery is greatly increased; carbon outgassing by binder resin is minimized since no oxygen is allowed into the process; sand and resin usage and disposal is minimized due to the new engineered mold; and cooling of the poured sand casting is much faster through these unique features.

REFERENCES:
patent: 4733714 (1988-03-01), Smith
patent: 4858672 (1989-08-01), Chandley
patent: 2004/0050525 (2004-03-01), Kennedy et al.
patent: 2004/0244935 (2004-12-01), Nakao et al.

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