Ford Motor Company
PRE-CONDITIONED AlSiFe COATING OF BORON STEEL USED IN HOT STAMPING

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% 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.