Method for producing a motor vehicle component with at least two regions of different strengths

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United States of America Patent

PATENT NO 11331710
APP PUB NO 20190054513A1
SERIAL NO

16080096

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Abstract

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A method for producing a motor vehicle component with at least two regions of different strengths and a protective layer, consisting of the following process steps: —providing precoated blanks made of a steel alloy, which can be hardened, —homogeneously heating to a heating temperature, which is at least greater than or equal to the AC1 temperature, preferably greater than or equal to the AC3 temperature, —holding the heating temperature, so that the precoating alloys with the blank, —homogeneously intercooling the alloyed blank to an intercooling temperature between 450 deg. C. and 700 deg. C., partially heating the blank from the intercooling temperature to at least the AC3 temperature in regions of the first type and holding regions of the second type at substantially intercooling temperature, —hot forming and press hardening the partially tempered blank so as to form the motor vehicle component, wherein a tensile strength of greater than 1400 MPa is produced in regions of the first type, a tensile strength of less than 1050 MPa is produced in regions of the second type, and a transition region is produced between said regions.

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Patent Owner(s)

Patent OwnerAddress
BENTELER AUTOMOBILTECHNIK GMBH33102 PADERBORN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dvorak, Borek Jablonec nad Nisou, CZ 4 10
Hielscher, Christian Delbrueck, DE 24 96
Horn, Stefan Bad Emstal, DE 20 86
Kout, Radovan Liberec, CZ 6 13
Schaele, Martin Holzwickede, DE 1 3
Werneke, Simon Bueren, DE 4 9

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