METHOD FOR MANUFACTURING A SAND MOULD

An acid-hardenable binder system for producing a sandcasted mould by means of the generative 3D printing method is disclosed. According to the invention, a high mechanical strength and at the same time a low stripping behaviour of the sandcasted mould during the casting is due to the fact that the r...

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Bibliographische Detailangaben
Hauptverfasser:	HEERE, HARALD, ADAM, ROBERT, FROSCHAUER, CHRISTIAN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CASTING FOUNDRY MOULDING PERFORMING OPERATIONS POWDER METALLURGY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	An acid-hardenable binder system for producing a sandcasted mould by means of the generative 3D printing method is disclosed. According to the invention, a high mechanical strength and at the same time a low stripping behaviour of the sandcasted mould during the casting is due to the fact that the resin component of the binder system contains a nitrogen-containing compound comprising a nitrogen content of 4 wt.% in relation to the total amount of resin and an aryl sulfonic acid as a hardener having a proportion by weight of 30 to 50 % of the total amount of resin, an aromatic alcohol being provided for the cleaning of the printing nozzles of the resin.