ArcelorMittal S.A.
Method of producing press-hardened and coated steel parts at a high productivity rate

Abstract:

A sheet or blank is provided which includes a substrate and pre-coating on at least one face of the substrate. A polymerized layer overlies at least a part of the pre-coating and has a thickness from 2 .mu.m to 30 .mu.m, a nitrogen content of less than 1% by weight, carbon pigments in a quantity from 3 to 30% by weight and does not include a polymer with silicon. A welded blank, part and fabrication methods are also provided.