EP 0426581 B1 19930714 - PROCESS FOR THE LOST FOAM CASTING OF METAL PIECES UNDER CONTROLLED PRESSURE
Title (en)
PROCESS FOR THE LOST FOAM CASTING OF METAL PIECES UNDER CONTROLLED PRESSURE
Publication
Application
Priority
FR 8914730 A 19891031
Abstract (en)
[origin: EP0426581A1] In the process for the lost foam casting of metal pieces under controlled pressure, the pressure is initially caused to increase at a rate of between 0.003 and 0.3 MPa/sec over a first period of at most 5 seconds from the start of the pressure rise, then at a rate greater than that of the first period over a second period until maximum pressure is reached. <??>The process makes it possible to obtain pieces with a shape corresponding to the model and without porosities.
IPC 1-7
IPC 8 full level
B22D 27/09 (2006.01); B22C 9/04 (2006.01); B22D 18/00 (2006.01); B22D 18/04 (2006.01); B22D 23/00 (2006.01); B22D 27/13 (2006.01)
CPC (source: EP KR US)
B22C 9/04 (2013.01 - KR); B22C 9/046 (2013.01 - EP US); B22D 9/00 (2013.01 - KR); B22D 27/13 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0426581 A1 19910508; EP 0426581 B1 19930714; AT E91445 T1 19930715; AU 627374 B2 19920820; AU 6561790 A 19910509; BG 93124 A 19931224; BR 9005428 A 19910917; CA 2027974 A1 19910501; CN 1017974 B 19920826; CN 1051319 A 19910515; CS 520090 A3 19920115; DE 69002218 D1 19930819; DE 69002218 T2 19931111; DK 0426581 T3 19931213; ES 2042256 T3 19931201; FI 905367 A0 19901030; FI 92807 B 19940930; FI 92807 C 19950110; HU 205289 B 19920428; HU 906933 D0 19910528; HU T57107 A 19911128; IE 903892 A1 19910508; JP H03155434 A 19910703; JP H0626750 B2 19940413; KR 910007601 A 19910530; KR 940002018 B1 19940314; MX 171994 B 19931126; NO 175415 B 19940704; NO 175415 C 19941012; NO 904706 D0 19901030; NO 904706 L 19910502; PL 165320 B1 19941230; PL 287464 A1 19911021; PT 95746 A 19920630; RU 1834745 C 19930815; SI 9012042 A 19941231; US 5088544 A 19920218; YU 204290 A 19940624; YU 47436 B 19950327
DOCDB simple family (application)
EP 90420466 A 19901029; AT 90420466 T 19901029; AU 6561790 A 19901030; BG 9312490 A 19901030; BR 9005428 A 19901026; CA 2027974 A 19901018; CN 90108707 A 19901031; CS 520090 A 19901024; DE 69002218 T 19901029; DK 90420466 T 19901029; ES 90420466 T 19901029; FI 905367 A 19901030; HU 693390 A 19901030; IE 389290 A 19901030; JP 29349390 A 19901030; KR 900017190 A 19901025; MX 2309790 A 19901030; NO 904706 A 19901030; PL 28746490 A 19901023; PT 9574690 A 19901030; SI 9012042 A 19901029; SU 4831530 A 19901030; US 59470690 A 19901009; YU 204290 A 19901029