Steel Sheet Having Excellent Plating Quality And Method For Manufacturing Same

Abstract: The present invention relates to a hot-dip galvanized steel sheet having excellent plating quality, a steel sheet for plating for producing same, and a method for manufacturing same. A steel sheet for plating according to one aspect of the present invention comprises, in weight percent: 0.1-1.0% of Mn; 0.1% or less of Si (excluding 0%); 0.0005-0.03% of C; 0.005-3.0% of Al; 0.04% or less of P; 0.015% or less of S; 1.5% or less of Cr; 0.005% or less of B, and the balance being Fe and inevitable impurities, wherein each of a GDS profile of the Mn component and a GDS profile of the Si component, which are observed from the surface to the depth, sequentially includes a maximum point and a minimum point, the difference (the reduced concentration difference of Mn) between a value obtained by dividing the Mn concentration at the maximum point in the GDS profile of the Mn component by the Mn concentration of a base material, and a value obtained by dividing the Mn concentration at the minimum point in the GDS profile of the Mn component by the Mn concentration of the base material may be 10% or greater, and the difference (the reduced concentration difference of Si) between a value obtained by dividing the Si concentration at the maximum point in the GDS profile of the Si component by the Si concentration of the base material, and a value obtained by dividing the Si concentration at the minimum point in the GDS profile of the Si component by the Si concentration of the base material may be 10% or greater. If no minimum points appear within 5 µm in depth, a point at a depth of 5 µm is considered to be the point at which the minimum point appears.

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