BINDER COMPOSITION FOR COAL-DUSTLESS FRESHING FOUNDRY MOULDING MATTER AND REUSING FOR ROUGH MOULDING OF BENTONITE BINDING

BINDER COMPOSITION FOR COAL-DUSTLESS FRESHING FOUNDRY MOULDING MATTER AND REUSING FOR ROUGH MOULDING OF BENTONITE BINDING

The application relates to a binder system for decarburisation free from coal dust, for the production of bentonite bonds and cast cores, characterised in that it contains 0.5-20 % by mass of vegetable lecithin or vegetable oil or a mixture thereof in any desired ratio, 0.1-5.5 % by mass of hardenin...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: GEDEY,KAROLY,HU, HALASZ,ISTVAN,HU, SZEPFOELDI,GYULA,HU, KOVALICZKY,KALMAN,HU
Format: Patent
Sprache:eng
Schlagworte:
CASTING
FOUNDRY MOULDING
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Beschreibung
Zusammenfassung:The application relates to a binder system for decarburisation free from coal dust, for the production of bentonite bonds and cast cores, characterised in that it contains 0.5-20 % by mass of vegetable lecithin or vegetable oil or a mixture thereof in any desired ratio, 0.1-5.5 % by mass of hardening agent, hardening-agent derivative or carboxymethylcellulose sodium or a mixture thereof in any desired ratio, 0.3-4.5 % by mass of sodium carbonate, 0.05-1.25 % by mass of boron compounds and the remainder to 100 % by mass of bentonite.