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1. (WO2015114405) METHOD OF PRODUCING PARTS WITH SLIGHT UNDULATION FROM AN ELECTROGALVANIZED SHEET, CORRESPONDING PART AND VEHICLE

Pub. No.:    WO/2015/114405    International Application No.:    PCT/IB2014/058666
Publication Date: Fri Aug 07 01:59:59 CEST 2015 International Filing Date: Fri Jan 31 00:59:59 CET 2014
IPC: B21B 27/00
C23C 2/02
C23C 2/40
Applicants: ARCELORMITTAL
Inventors: DERULE, Hervé
Title: METHOD OF PRODUCING PARTS WITH SLIGHT UNDULATION FROM AN ELECTROGALVANIZED SHEET, CORRESPONDING PART AND VEHICLE
Abstract:
The method comprises the following steps: cold rolling the substrate (3) with operating cylinders of which the operating surfaces have a degree of roughness Ra2.5 of less than or equal to 3.6 μm; depositing the metal coating (7) onto at least one face (5) of the annealed substrate (3), by electrodeposition in order to form the sheet (1); and deformation of the cut-out sheet (1) in order to form the parts, the outer surface (21) of the metal coating (7) having an undulation Wa0.8 which is less than or equal to 0.50 μm after the deformation step.