Method of shaping and hardening a sheet steel blank

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United States of America Patent

PATENT NO 9127330
APP PUB NO 20120073708A1
SERIAL NO

13261035

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Abstract

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A method of forming a product by shaping and hardening a sheet-steel blank formed from separate sheets welded together, heating the blank to the austenitising range, hot stamping the blank in a cooled tool pair, hardening the product while it remains in the tool pair, and cooling the weld between two adjacent sheets at a reduced cooling rate as compared to the cooling rate of areas on either side of the weld.

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Patent Owner(s)

Patent OwnerAddress
GESTAMP HARDTECH AB971 25 LULEÅ

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Krispinsson, Jan Lulea, SE 6 91

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