EP 0881014 B1 20011004 - Apparatus for hardening sand cores
Title (en)
Apparatus for hardening sand cores
Title (de)
Einrichtung zum Aushärten von Giesserei-Kernen
Title (fr)
Dispositif pour durcir les noyaux en sable
Publication
Application
Priority
- EP 97108678 A 19970530
- CZ 165497 A 19970528
- US 86391397 A 19970527
Abstract (en)
[origin: EP0881014A1] Foundry sand core hardening equipment includes a catalyst vapour/carrier gas mixing stage (1) which is connected via a programme controlled valve (2), a pump (3) and a flowmeter (4) to a catalyst supply container (5). A programme controlled compressed air source (6) is followed by the core-making mould in which the core is exposed to a catalyst enriched gas stream and then optionally a compressed air stream. The novelty is that the valve (2) in the delivery line (7) of the supply container (5) is periodically connected to the return line (8) to the supply container (5) for pressure equalisation in the feed system. Preferably, the mixing stage (1) includes an evaporator block (9) of nickel plated, iron oxide-enriched, porous silicon carbide, aluminium oxide, zirconium oxide or zirconium carbide ceramic, fitted with a permanent magnet (14).
IPC 1-7
IPC 8 full level
B22C 9/12 (2006.01); B22C 13/12 (2006.01)
CPC (source: EP US)
B22C 9/123 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0881014 A1 19981202; EP 0881014 B1 20011004; AT E206333 T1 20011015; CZ 165497 A3 19981216; CZ 289410 B6 20020116; DE 59704789 D1 20011108; ES 2163064 T3 20020116; US 5971056 A 19991026
DOCDB simple family (application)
EP 97108678 A 19970530; AT 97108678 T 19970530; CZ 165497 A 19970528; DE 59704789 T 19970530; ES 97108678 T 19970530; US 86391397 A 19970527