Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1992-09-09
1994-08-16
Bradley, P. Austin
Metal founding
Process
Shaping liquid metal against a forming surface
164 551, 164 97, 1641221, B22D 1914, B22C 300
Patent
active
053378008
ABSTRACT:
The present invention pertains to a system for casting a melted material. The system has a mold having a mold cavity for forming the melted material. There is a coating disposed about the mold cavity which chemically reacts with the melted material such that the melted material cannot react with mold. In this manner, the cast part can be more easily released from the mold, since it cannot chemically react with it. The present invention is also a method of casting a melted material. The method comprises the step of coating a mold cavity of a mold with a material which is chemically reactive with the melted material. Next, there is the step of introducing melted material into the mold cavity such that melted material infiltrates and chemically reacts with the material on the mold to form a composite skin which prevents the melted material from chemically reacting with the mold. Then, there can be the step of cooling the melted material. Preferably, before the introducing step, there is the step of disposing reinforcement within the mold and the introducing step is such that a pure material layer is formed between the composite skin and the infiltrated reinforcement. If desired, the composite skin can be removed or left on to protect the part.
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Bradley P. Austin
Puknys Erik R.
Schwartz Ansel M.
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