METHOD FOR PRE-HEATING ANNEALING MATERIAL IN A HOOD-TYPE ANNEALING SYSTEM

A method is described for preheating annealing material (4, 5) in a hood-type annealing system, comprising annealing bases (1, 2) which accommodate the annealing material (4, 5) under a protective cover (7) in a protective gas atmosphere, with the annealing material (4) to be subjected to a heat tre...

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Bibliographische Detailangaben
Hauptverfasser:	EBNER, ROBERT, SAUSCHLAGER, ANDREAS
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 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 METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS OPEN SINTERING OR LIKE APPARATUS OVENS RETORTS WEAPONS
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Beschreibung
Zusammenfassung:	A method is described for preheating annealing material (4, 5) in a hood-type annealing system, comprising annealing bases (1, 2) which accommodate the annealing material (4, 5) under a protective cover (7) in a protective gas atmosphere, with the annealing material (4) to be subjected to a heat treatment in a protective cover (7) being preheated with the help of a gaseous heat carrier which flows in a cycle around the protective covers (7) on the outside and absorbs heat from annealing material (5) which is already heat-treated in a protective cover (7) and emits it to the annealing material (4) to be preheated in the other protective cover (7). In order to achieve advantageous utilization of the thermal energy it is proposed that for the heat treatment of the annealing material (4, 5, 6) at least one further annealing base (3) is used which comprises a protective hood (7) which is heatable from the outside by a burner (15), and that the hot exhaust gases from the heating of the protective hood (7) are admixed into the heated heat carrier for preheating the annealing material (4).