METHOD FOR THE PRODUCTION OF AN ALUMINIZED PACKAGING STEEL

The invention concerns a method for the production of an aluminized packaging steel from a cold-rolled steel sheet made of an unalloyed or low-alloy steel with the following steps: - heating of the steel sheet by means of electromagnetic induction at temperatures in the recrystallization range of th...

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Bibliographische Detailangaben
Hauptverfasser:	SAUER, REINER, KAUP, BURKHARD, GADE, DIRK, KOHL, MANUEL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention concerns a method for the production of an aluminized packaging steel from a cold-rolled steel sheet made of an unalloyed or low-alloy steel with the following steps: - heating of the steel sheet by means of electromagnetic induction at temperatures in the recrystallization range of the steel at a heating rate of more than 75 K/s, so as to anneal the steel sheet in a recrystallizing manner; - dipping of the steel sheet annealed in a recrystallizing manner into a molten aluminum bath, so as to apply an aluminum layer on the steel sheet, wherein the steel sheet, upon being dipped into the aluminum bath, has a temperature of at least 700°C; - pulling the steel sheet out of the aluminum bath and cooling the aluminized steel sheet at a cooling rate of at least 100 K/s. The aluminized steel sheets produced in accordance with the invention are characterized by a high degree of strength and elongation at break and exhibit excellent formation characteristics, for example, in drawing and wall ironing processes, for the production of two-part food and beverage cans or lids and can be used as substitute material for tin sheets.