Metal founding – Process – Shaping a forming surface
Patent
1983-06-30
1986-10-21
Godici, Nicholas P.
Metal founding
Process
Shaping a forming surface
164 34, 164 35, 164361, 164522, B22C 900, B22C 904
Patent
active
046179771
ABSTRACT:
The present invention provides a method for manufacturing a thin-walled ceramic casting mould which is particularly suitable for casting directionally solidified articles in which rapid cooling of the cast material is required. The mould is transfer moulded around a disposable pattern material and includes an integral core. The mould has an outer wall thickness of the order of 0.5 mm to 2.0 mm. The mould and core may be made of the same or different ceramic materials chosen for their strength or thermal conductivity. The method further provides for a series of high temperature disposable supports embedded in the disposable pattern material, providing support for the outer wall of the mould during the firing process. The disposable supports are disposed of at a temperature at which the mould has acquired self-supporting strength.
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Godici Nicholas P.
Rolls-Royce Limited
Seidel Richard K.
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