FURNACE WITH MULTIPLE HEATING

A furnace (2) for reducing the temperature gradients in and cooling an elongate metal ingot comprises a furnace enclosure having an elongate vertical axis with heat insulating and temperature resistant walls (4), a plurality of electrical resistance heating elements being arranged on the interior of...

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Bibliographische Detailangaben
Hauptverfasser:	IYENGAR, RAM, K, DEBARBADILLO, JOHN, J, YANG, WANHONG
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FORCOMBUSTION CHAMBERS, e.g. FIREBRIDGES COMBUSTION APPARATUS COMBUSTION PROCESSES DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDEDFOR DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS INCOMBUSTION CHAMBERS ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING MECHANICAL ENGINEERING OPEN SINTERING OR LIKE APPARATUS OVENS RETORTS SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTIONAPPARATUS WEAPONS
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Beschreibung
Zusammenfassung:	A furnace (2) for reducing the temperature gradients in and cooling an elongate metal ingot comprises a furnace enclosure having an elongate vertical axis with heat insulating and temperature resistant walls (4), a plurality of electrical resistance heating elements being arranged on the interior of walls (4) in independently controllable heating zones (8, 10, 12, 14, 16) spaced along the vertical axis of the furnace, and a controller for separately controlling each zone such that the heating rate of each zone increases moving from the lowermost (8) zone to the uppermost zone (16). L'invention concerne un four permettant de réduire les gradients de température dans un lingot de métal allongé et de le refroidir. Ledit four comprend une enceinte présentant un axe vertical dotée de parois thermo-isolantes et thermorésistantes, une pluralité d'éléments de chauffage à résistance électrique agencés à l'intérieur desdites parois dans des zones de chauffage espacées le long de l'axe vertical du four pouvant être commandées de manière indépendante, et un contrôleur commandant chaque zone de manière séparée de sorte que la vitesse de chauffage de chaque zone augmente de la zone la plus basse vers la zone la plus haute.