Method and apparatus for casting aluminum by casting mold

Details Method and apparatus for casting aluminum by casting mold Method and apparatus for casting aluminum by casting mold

2007-04-10

2007-04-10

Lin, Kuang Y. (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S066100, C164S067100

Reexamination Certificate

active

11190780

ABSTRACT:
An aluminum casting process using a casting mold in which after the cavity (25) is filled with an inert gas, magnesium is introduced into the cavity to have a magnesium layer (58a) deposited on the cavity wall. Then, nitrogen gas is introduced into the cavity to form magnesium nitride (58b) on the surface of the magnesium layer after the cavity wall is heated to a specific temperature. Then, molten aluminum is supplied to have an aluminum casting molded, while the surface of the molten aluminum (39) is reduced with magnesium nitride. This makes it possible to form magnesium nitride within a short time and decrease the amount of nitrogen gas as required.

REFERENCES:
patent: 5174357 (1992-12-01), Allen
patent: 6786272 (2004-09-01), Cowie et al.
patent: 2005/0000672 (2005-01-01), Ban et al.
patent: 2000-280063 (2000-10-01), None
patent: 2000-280063 (2000-10-01), None
patent: 2001-321921 (2001-11-01), None

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