Galvanized steel sheet having excellent hardness and galling resistance, and manufacturing method therefor
AssigneePosco
InventorsKyung-Hoon NAM, Yong-Hwa JUNG, Kyoung-Pil KO, Tae-Yeob KIM, Woo-Sung JUNG
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Abstract
Provided is a galvanized steel sheet plated by vacuum deposition and, more specifically, to a galvanized steel sheet having excellent hardness and galling resistance, and a method for manufacturing same. The zinc coated steel sheet includes: a base steel sheet; and a zinc coated layer formed on the base steel sheet. The zinc coated layer is formed of a columnar structure, and a content of Mn included in the zinc coated layer is 0.1 to 0.4 wt %.
Claims6
A zinc coated steel sheet having excellent hardness and galling resistance, comprising:
- a base steel sheet;
- and
- a zinc coated layer formed on the base steel sheet,
- wherein the zinc coated layer is formed of a columnar structure, and a content of Mn included in the zinc coated layer is 0.1 to 0.4 wt %.
A method of manufacturing a zinc coated steel sheet having excellent hardness and galling resistance comprising:
- preparing a base steel sheet;
- forming a zinc coated layer through spraying vapor generated by electromagnetic levitation induction heating of a coating raw material onto the base steel sheet,
- wherein the coating raw material is a Zn—Mg alloy or a mixture of Zn and Mg having a content of Mg of 0.1 to 0.4 wt %.
Dependencies are inferred from the claim text.