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US 2023/0119030 A1Published application
METHOD FOR MANUFACTURING A METAL SHEET WITH A ZnAl COATING AND WITH OPTIMIZED WIPING, CORRESPONDING METAL SHEET, PART AND VEHICLE
AssigneeArcelorMittal
InventorsJean-Michel Mataigne, Didier Dauchelle, Florence Bertrand
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Abstract
A coated metal sheet includes a steel substrate and a coating on at least one surface of the steel substrate. The coating includes between 0.2 and 0.7% by weight of Al, with a remainder of the metal coating being Zn and inevitable impurities. The coated metal sheet was subjected to a skin pass operation after coating. An outer surface of the metal coating has a waviness Wa0.8 of less than or equal to 0.55 μm.
Claims8
A coated metal sheet comprising:
- a steel substrate having at least one face;
- and
- a metal coating the at least one face of the steel substrate, the metal coating being deposited by dipping the steel substrate in a dip bath;
- the metal coating comprising between 0.2 and 0.7% by weight of Al, a remainder of the metal coating being Zn and inevitable impurities,
- wherein the coated metal sheet was subjected to a skin pass operation after coating and wherein an outer surface of the metal coating has a waviness Wa0.8 of less than or equal to 0.55 μm.
2 more elements
Dependencies are inferred from the claim text.