Ford Motor Company
Pre-conditioned AlSiFe coating of boron steel used in hot stamping

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Abstract:

A process for pre-conditioning a hot stamped part is provided. The process includes continuously annealing a boron steel material having an aluminum coating for a predetermined time and at a predetermined temperature such that less than 10 weight % Iron (Fe) is in the aluminum coating and AlSi pockets are formed in the aluminum coating prior to a subsequent hot stamping process, wherein the predetermined time and temperature are a function of a thickness of the boron steel material.

Status:
Grant
Type:

Utility

Filling date:

12 Feb 2018

Issue date:

9 Nov 2021