Component made of press-form-hardened, aluminum-based coated steel sheet, and method for producing such a component

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United States of America Patent

PATENT NO 11339479
APP PUB NO 20200308708A1
SERIAL NO

16093466

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Abstract

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In a component made of press-form-hardened, aluminium-based coated steel sheet, the coating has a covering which contains aluminum and silicon applied in the hot-dip process. The press-form-hardened component in the transition region between steel sheet and covering has an inter-diffusion zone I, wherein, depending on the layer application of the covering before heating and press hardening, the thickness of the inter-diffusion zone I obeys the following formula: I [μm]<(1/35)×application on both sides [g/m2]+(19/7). Formed on the inter-diffusion zone I is a zone having various intermetallic phases having an average total thickness between 8 and 50 μm, on which zone there is in turn arranged a covering layer containing aluminum oxide and/or hydroxide having an average thickness of at least 0.05 μm to at most 5 μm.

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Patent Owner(s)

Patent OwnerAddress
VOLKSWAGEN AKTIENGESELLSCHAFTBERLINER RING 2 WOLFSBURG 38440
SALZGITTER FLACHSTAHL GMBHEISENHÜTTENSTRASSE 99 38239 SALZGITTER 38239

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Beier, Frank Staufenberg, DE 12 58
Debeaux, Marc Hildesheim, DE 11 17
Fritzsche, Christian Salzgitter, DE 10 49
Graul, Matthias Brome, DE 4 5
Hartmann, Haucke-Frederik Herzberg, DE 3 3
Koll, Thomas Braunschweig, DE 3 3
Lass, Jan-Frederik Wolfsburg, DE 2 3
Luther, Friedrich Gehrden, DE 15 57
Mütze, Stefan Peine, DE 9 34

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