FAR INFRARED RADIATION MULTISTAGE HEATING FURNACE FOR STEEL PLATES FOR HOT PRESSING

Provided is a far-infrared radiation multi-stage type heating furnace for steel sheets for hot stamping, the furnace including far-infrared radiation heaters having flexibility that are prevented from deflecting even during heating at temperatures ranging from the Ac 3 transformation temperature to...

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Bibliographische Detailangaben
1. Verfasser:	KUWAYAMA Shinjiro
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CHEMISTRY DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS HEATING KILNS LIGHTING MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS OPEN SINTERING OR LIKE APPARATUS OVENS PERFORMING OPERATIONS PUNCHING METAL RETORTS TRANSPORTING WEAPONS WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	Provided is a far-infrared radiation multi-stage type heating furnace for steel sheets for hot stamping, the furnace including far-infrared radiation heaters having flexibility that are prevented from deflecting even during heating at temperatures ranging from the Ac 3 transformation temperature to 950°C. The far-infrared radiation multi-stage type heating furnace includes: multiple-staged heating units that accommodate steel sheets for hot stamping, each heating unit formed by thermal insulation materials disposed around the periphery; and far-infrared radiation heaters positioned above and below the heating units. A far-infrared radiation heater (14-1) is received by a plurality of first metal strips (26) so as to be disposed approximately horizontally. The plurality of first metal strips (26) are disposed so that their strong axis direction approximately corresponds to the direction of gravity and supported by support pieces (27) so as to be expandable and contractible in a longitudinal direction by thermal expansion or thermal contraction. The support pieces (27) are disposed outside the thermal insulation materials in the heating units and a ceiling unit.