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Machine translation
1. (WO1980001146) METHOD OF MAKING AND USING A CERAMIC SHELL MOLD
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001146    International Application No.:    PCT/US1978/000187
Publication Date: 12.06.1980 International Filing Date: 04.12.1978
IPC:
B22C 1/16 (2006.01)
Applicants:
Inventors:
Priority Data:
US78/00187 04.12.1978 WO
Title (EN) METHOD OF MAKING AND USING A CERAMIC SHELL MOLD
(FR) PROCEDE DE FABRICATION ET D"UTILISATION D"UNE MOULE A COQUILLE EN CERAMIQUE
Abstract: front page image
(EN)A method of making a shell mold (6) includes alternately applying a ceramic coating composition (8) and a stucco composition (10) to an expendable pattern, the presence of graphite being substantially avoided therein, and applying a barrier coating (16) thereto including a ceramic powder, a binder, and a preselected amount of graphite. A preferred range of graphite of about 13 to 17 Wt.% in the barrier coating (16) minimizes decarburization of a ferrous article formed in the cavity of the shell mold (6).
(FR)Un procede de fabrication d"un moule a coquille (6) consiste a appliquer alternativement une composition de revetement ceramique (8) et une composition de stuc (10) sur un modele expansible, le graphite etant sensiblement inexistant, et a appliquer par dessus un revetement formant barriere (16) comprenant une poudre ceramique, un liant, et une quantite predeterminee de graphite. La quantite de graphite se situe de preference dans une plage comprise entre 13 et 17% en poids dans le revetement barriere (16), pour reduire au minimum la decarburation d"un article ferreux forme dans la cavite d"un moule a coquille (6).
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)