EP 0012047 A1 19800611 - Process and apparatus for reclaiming foundry sand.
Title (en)
Process and apparatus for reclaiming foundry sand.
Title (de)
Verfahren und Vorrichtung zum Regenerieren von Giesserei-Formsand.
Title (fr)
Procédé et installation pour régénérer les sables de moulage.
Publication
Application
Priority
FR 7831830 A 19781110
Abstract (en)
[origin: US4291379A] The method for automatically regenerating molding sands consists in mixing the spent sand and in intermittently withdrawing a cylindrical test sample of sand. The compactibility of the test sample is measured intermittently by determining the reduction in height of the sample under the action of a predetermined force. The quantity of water to be added to the sand is determined by means of a microprocessor from the result of the measurement and from the temperature of the sample. The results of measurements of compactibility and compressive strength of the test sample are transmitted to the microprocessor which determines the quantity of bentonite, of foundry black and the like to be added to the spent sand.
Abstract (fr)
Dans le procédé pour régénérer automatiquement les sables de moulage utilisés en fonderie, on malaxe le sable usé (3), on prélève par intermittence une éprouvette cylindrique de sable, on détermine des propriétés physiques de cette éprouvette et on transmet les résultats obtenus à un calculateur (17) qui détermine les quantitès d'eau, de bentonite, de noir et analogue à ajouter au sable usé, puis commande automatiquement l'addition de ces quantités au sable usé.
IPC 1-7
IPC 8 full level
B22C 5/00 (2006.01); B22C 5/04 (2006.01); B22C 19/04 (2006.01)
CPC (source: EP US)
B22C 5/00 (2013.01 - EP US); B22C 5/04 (2013.01 - EP US); B22C 19/04 (2013.01 - EP US)
Citation (search report)
- FR 1389730 A 19650219 - DIETERT CO HARRY W
- US 3373977 A 19680319 - DIETERT HARRY W
- MODERN CASTING, Vol. 52, No. 6, Decembre 1967, Des Plaines US H.W. DIETERT: "Automatic sand testing and bond additions to system sand", pages 61-67 * Texte en entier *
- MODERN CASTING, Vol. 57, No. 3, Mars 1970, Des Plaines US J.H. SCHAUM: "Compuerized sandology for instant sand control", pages 131-133 * Texte en entier *
- MODERN CASTING, No. 1, Janvier 1967, Des Plaines, US, T.J. SMITH: "Improve your core mixtures with a computer", pages 59-63 * Texte en entier *
Designated contracting state (EPC)
CH DE GB IT
DOCDB simple family (publication)
EP 0012047 A1 19800611; FR 2440792 A1 19800606; FR 2440792 B1 19820319; JP S55106653 A 19800815; US 4291379 A 19810922
DOCDB simple family (application)
EP 79400807 A 19791030; FR 7831830 A 19781110; JP 14496979 A 19791110; US 9044979 A 19791101