METHOD OF PREHEATING A SET OF SHELL MOLDS FOR LOST-WAX CASTING

The invention relates to a method of preheating a set of N shell molds (12) for lost-wax casting, the method comprising the following successive steps: individually charging shell molds into n unit electric furnaces (100), each of which has previously been preheated to an initial loading temperature...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TENNE SERGE, CALERO PATRICK ALBERT, LALLEMENT BERNARD LOUIS, RAPPART YVAN
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE FOUNDRY MOULDING FURNACES HEATING KILNS LIGHTING MECHANICAL ENGINEERING OVENS PERFORMING OPERATIONS POWDER METALLURGY RETORTS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a method of preheating a set of N shell molds (12) for lost-wax casting, the method comprising the following successive steps: individually charging shell molds into n unit electric furnaces (100), each of which has previously been preheated to an initial loading temperature; starting a predefined preheating cycle for each shell mold charged in the unit electric furnaces, with a preheating cycle comprising raising the temperature of the furnace in compliance with a predefined ramp up to a predetermined setpoint temperature, and holding the furnace at the setpoint temperature for a predetermined duration; and at the end of each preheating cycle, unloading the shell mold in question and repeating the two preceding steps for another non-preheated shell mold.