Method of forming a hot stamped coated steel product

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United States of America Patent

PATENT NO 12012640
APP PUB NO 20240110256A1
SERIAL NO

18537158

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Abstract

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A method of forming a hot stamped coated steel product includes providing a precoated steel strip, the precoated steel strip including a base steel having a first side and a second side, and a precoating on at least one of the first side and the second side, the precoating being made of aluminum or an aluminum alloy; heating the precoated steel strip in a furnace, wherein the precoated strip experiences a temperature rise at a heating rate (Vc) between 4° and 12° C./s, wherein Vc is a mean heating rate between 20 and 700 C; removing the heated precoated steel strip from the furnace; and then hot stamping the precoated strip to deform the precoated steel strip into a hot stamped coated steel product, the hot stamped coated steel product having a coating including, proceeding from the base steel outwards: (a) an interdiffusion layer, (b) an intermediate layer, (c) an intermetallic layer, and (d) a superficial layer.

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Patent Owner(s)

Patent OwnerAddress
ARCELORMITTALLUXEMBURG LUXEMBURG CITY LUXEMBOURG LUXEMBOURG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Drillet, Pascal Rozerieulles, FR 34 236
Kefferstein, Ronald Saint Mitre les Ramparts, FR 19 233
Spehner, Dominique Balan, FR 19 253

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