EP 0024490 B1 19830413 - METHOD FOR SEPARATING A REFRACTORY SHELL MOULD FROM A FOUNDRY PATTERN
Title (en)
METHOD FOR SEPARATING A REFRACTORY SHELL MOULD FROM A FOUNDRY PATTERN
Publication
Application
Priority
DE 2929397 A 19790720
Abstract (en)
[origin: EP0024490A1] 1. A method of separating a refractory moulded shell (1) from a casting pattern (2), in which the moulded shell (1) is formed adjacent to the surface of the casting pattern (2) by mechanically and/or pneumatically compacting, and possibly thermo-setting, a fine-grained mineral mass the particles of which are encased by an organic or unorganic binding agent, and in which air pressure above atmospheric pressure is applied between the casting pattern (2) and the mould shell (1), characterized in that air pressure below the atmospheric one is applied at the surface of the moulded shell (1).
IPC 1-7
IPC 8 full level
B22C 9/00 (2006.01); B22C 13/08 (2006.01); B22C 17/00 (2006.01)
CPC (source: EP)
B22C 13/08 (2013.01); B22C 17/00 (2013.01)
Designated contracting state (EPC)
AT BE CH FR GB IT LI NL
DOCDB simple family (publication)
EP 0024490 A1 19810311; EP 0024490 B1 19830413; AT E3005 T1 19830415; DE 2929397 A1 19810205; DE 2929397 C2 19850808
DOCDB simple family (application)
EP 80103436 A 19800620; AT 80103436 T 19800620; DE 2929397 A 19790720