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EP 0343401 A2 19891129 - Investment casting mould.

Title (en)

Investment casting mould.

Title (de)

Feingiessform.

Title (fr)

Moule de précision.

Publication

EP 0343401 A2 19891129 (EN)

Application

EP 89107893 A 19890502

Priority

GB 8811799 A 19880519

Abstract (en)

A method and material for the manufacture of investment casting moulds are described. The moulds so produced comprise relatively large alumina particles contained in a matrix of fine alumina flour and a siliceous bonding phase. Preferably at least a part of the alumina flour is constituted by alumina known as "reactive alumina". Preferably the shell mould is fired at a temperature sufficiently high to allow at least a part of the silica to combine with the alumina flour to form mullite in the matrix.

IPC 1-7

B22C 9/04

IPC 8 full level

B22C 1/16 (2006.01); B22C 9/04 (2006.01)

CPC (source: EP)

B22C 1/165 (2013.01); B22C 9/04 (2013.01)

Designated contracting state (EPC)

CH DE FR IT LI

DOCDB simple family (publication)

EP 0343401 A2 19891129; EP 0343401 A3 19901219; GB 2218705 A 19891122; GB 8811799 D0 19880622; GB 8909624 D0 19890614

DOCDB simple family (application)

EP 89107893 A 19890502; GB 8811799 A 19880519; GB 8909624 A 19890427