Metal founding – Process – Shaping liquid metal against a forming surface
Reexamination Certificate
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.
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patent: 6786272 (2004-09-01), Cowie et al.
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patent: 2001-321921 (2001-11-01), None
Echigo Takaharu
Kato Takashi
Matsuura Satoshi
Nakao Yahuhiro
Shoji Hiroto
Honda Giken Kogyo Kabushiki Kaisha
Lin Kuang Y.
Rankin, Hill Porter & Clark LLP
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