Method and device for heating a steel blank for hardening purposes
Assigneesvoestalpine Automotive Components Cartersville Inc., Bayerische Motoren Werke Aktiengesellschaft
InventorsWilhelm Weinmeister, Markus Pfestorf
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Abstract
A method and a device for heating a sheet metal blank or a formed sheet metal component above the austenitization temperature for the purpose of quench hardening, wherein the dew point of the furnace atmosphere is set to −15° C. to 15° C., preferably to −10° C. to 10° C., in particular for the formation of a loosely adhering oxide skin, for controlling an oxide skin on the sheet metal or component coated with a metallic corrosion protection layer or an uncoated sheet metal or component.
Claims14
A method for heating a sheet metal blank or a formed sheet metal component above the austenitizing temperature for the purpose of hot forming or quench hardening, comprising:
- setting a dew point of a furnace atmosphere from −15° C. to 15° C. in order to control a formation of a loosely adhering oxide skin on the sheet metal blank or component coated with a metallic corrosion protection layer or an uncoated sheet metal blank or component.
Dependencies are inferred from the claim text.