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US 11,168,389 B2Granted
Plated steel sheet having fine and even plating structure
AssigneePosco
InventorSu Young Kim
Life of this patent
Estimating the term…
Abstract
Provided is a plated steel sheet having an excellent quality with fine and even plating texture, the plated steel sheet including a base steel sheet and a Zn plating layer formed on the base steel sheet, wherein a Zn crystal in the plating layer has a size of 5 μm or less.
Claims13
A plated steel sheet having a fine and even plating texture, the plated steel sheet comprising:
- a Zn-based plating layer formed on a steel sheet,
- wherein the Zn-based plating layer includes a Zn single-phase texture having an average particle size of 5 μm or less;
- and
- a Zn single-phase distribution B/A in the plating layer satisfies a condition of being 0.5 to 1.0, and thus the Zn single-phase is formed having an even distribution with respect to a thickness direction of the plating layer,
- wherein A is a fraction of the entire Zn single-phase with respect to the thickness direction of the plating layer and B is a fraction of the Zn single-phase in an outer surface layer portion of the plating layer, the surface layer portion being defined by a region from an outer surface of the plating layer to a centerpoint of the plating layer in the thickness direction of the plating layer, and
- wherein A is 15 to 40% by area.
3 more elements
A plated steel sheet having a fine and even plating texture, the plated steel sheet comprising:
- a Zn-based plating layer formed on a steel sheet,
- wherein the Zn-based plating layer includes a Zn single-phase texture having an average particle size of 5 μm or less;
- and
- a Zn single-phase distribution B/A in the plating layer satisfies a condition of being 0.5 to 1.0, and thus the Zn single-phase is formed having an even distribution with respect to a thickness direction of the plating layer,
- wherein A is a fraction of the entire Zn single-phase with respect to the thickness direction of the plating layer and B is a fraction of the Zn single-phase in an outer surface layer portion of the plating layer, the surface layer portion being defined by a region from an outer surface of the plating layer to a centerpoint of an entire thickness of the plating layer in the thickness direction of the plating layer,
- wherein the plating layer has a pattern on a surface thereof, and
- wherein the pattern is in the form of a woven cloth, a net, or an irregularly intertwined line.
4 more elements
A plated steel sheet having a fine and even plating texture, the plated steel sheet comprising:
- a Zn-based plating layer formed on a steel sheet,
- wherein the Zn-based plating layer includes a Zn single-phase texture having an average particle size of 5 μm or less;
- and
- a Zn single-phase distribution B/A in the plating layer satisfies a condition of being 0.5 to 1.0, and thus the Zn single-phase is formed having an even distribution with respect to a thickness direction of the plating layer,
- wherein A is a fraction of the entire Zn single-phase with respect to the thickness direction of the plating layer and B is a fraction of the Zn single-phase in an outer surface layer portion of the plating layer, the surface layer portion being defined by a region from an outer surface of the plating layer to a centerpoint of an entire thickness of the plating layer in the thickness direction of the plating layer, and
- wherein the plating layer further includes a Mg component, and the plating layer includes a MgZn2 phase.
3 more elements
Dependencies are inferred from the claim text.