EP 0316978 B1 19920122 - MOULDING DEVICE WITH VARIABLE POROSITY FOR MAKING FOUNDRY SAND MOULDS, AND METHOD FOR ITS MANUFACTURE
Title (en)
MOULDING DEVICE WITH VARIABLE POROSITY FOR MAKING FOUNDRY SAND MOULDS, AND METHOD FOR ITS MANUFACTURE
Publication
Application
Priority
DE 3735751 A 19871022
Abstract (en)
[origin: WO8903736A1] Form tool for manufacturing casting moulds from moulding sand, process for its manufacture, and its advantageous use. A form tool for manufacturing sand moulds by chemical hardening of the moulding sand by means of reaction gases has a wall with a novel open-pore, heteroporous structure. The wall has a narrow, fine-pore region (3) which comes in contact with the moulding sand and which is in direct contact with a large-pore supporting skeleton (4).
IPC 1-7
IPC 8 full level
B22C 7/00 (2006.01); B22C 7/06 (2006.01); B22C 9/12 (2006.01)
CPC (source: EP KR US)
B22C 5/18 (2013.01 - KR); B22C 7/06 (2013.01 - EP US); B22C 9/123 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE DE ES FR GB IT NL SE
DOCDB simple family (publication)
EP 0316978 A1 19890524; EP 0316978 B1 19920122; AT E71862 T1 19920215; DE 3735751 A1 19890503; DE 3735751 C2 19890831; DE 3868014 D1 19920305; EP 0342209 A1 19891123; ES 2029000 T3 19920716; JP 2851293 B2 19990127; JP H02501721 A 19900614; KR 890701245 A 19891219; US 5190094 A 19930302; WO 8903736 A1 19890505
DOCDB simple family (application)
EP 88202375 A 19881020; AT 88202375 T 19881020; DE 3735751 A 19871022; DE 3868014 T 19881020; EP 8800942 W 19881020; EP 88908950 A 19881020; ES 88202375 T 19881020; JP 50828388 A 19881020; KR 890701130 A 19890622; US 38165889 A 19890809