F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
39/114, 25/135
F27D 3/14 (2006.01) B22D 18/04 (2006.01) B22D 41/52 (2006.01) B22D 41/58 (2006.01) B28B 3/00 (2006.01) B32B 18/00 (2006.01) F27B 14/10 (2006.01) F27D 3/16 (2006.01)
Patent
CA 1227032
ABSTRACT COMPOSITE REFRACTORY PRODUCT A composite refractory product, for example a sub- entry nozzle 22, for use in the pouring of molten metal comprises a body 26 of refractory material having therein or thereon a flexible gas-impermeable membrane 23 formed from a compatible refractory material preferably flexible graphite to render at least a portion of said body 26 impermeable to gas. Such a product is manufactured by providing within an isostatic pressing mould a flexible gas-impermeable membrane and particulate refractory materials, said mem- brane being formed from a refractory material compatible with the particulate refractory materials and being suspended or supported in the mould such that following packing of the particulate refractory materials in the mould and isostatic pressure upon the mould a refractory body having the said flexible membrane in or on the body at a predetermined location is produced.
453752
Fetherstonhaugh & Co.
Thornton James M.
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