Hot-dip galvanizing bath and galvanized iron article
AssigneeCK Metals Co., Ltd.
InventorsKazuyoshi Oohashi, Yoshiharu Kosaka
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Abstract
A hot-dip galvanizing bath contains 0.005 to 0.2 mass % of Cu. In this case, the hot-dip galvanizing bath preferably further contains 0.001 to 0.1 mass % of Al. A Zn—Bi galvanizing bath preferably contains 0.05 to 5.0 mass % of Bi, and a Zn—Pb galvanizing bath preferably contains 0.05 to 3.0 mass % of Pb. An iron article galvanized using the above hot-dip galvanizing bath exhibits an excellent appearance and corrosion resistance.
Claims15
A hot-dip galvanizing bath comprising 0.005 to 0.2 mass % of Cu and 0.001 to 0.1 mass % of Al, with the balance being Zn and unavoidable impurities.
A hot-dip galvanizing bath comprising 0.005 to 0.2 mass % of Cu, 0.001 to 0.1 mass % of Al, and 0.05 to 5.0 mass % of Bi, with the balance being Zn and unavoidable impurities.
A hot-dip galvanizing bath comprising 0.005 to 0.2 mass % of Cu, 0.001 to 0.1 mass % of Al, 0.05 to 5.0 mass % of Bi, and 0.001 to 0.1 mass % of Sn, with the balance being Zn and unavoidable impurities.
A hot-dip galvanizing bath comprising 0.005 to 0.2 mass % of Cu, 0.001 to 0.1 mass % of Al, and 0.05 to 3.0 mass % of Pb, with the balance being Zn and unavoidable impurities.
A hot-dip galvanizing bath comprising 0.005 to 0.2 mass % of Cu, 0.001 to 0.1 mass % of Al, 0.05 to 3.0 mass % of Pb, and 0.001 to 0.1 mass % of Sn, with the balance being Zn and unavoidable impurities.
Dependencies are inferred from the claim text.