| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a hot-dip galvanized steel sheet, which reduces a 'ripple' defect and has superior surface smoothness. SOLUTION: A manufacturing method comprises applying a zinc coating by immersing a steel sheet in a hot-dip galvanizing bath, adjusting adhered amount with a gas wiping method, and then reflowing the surface of the plated layer by radiation heating. The method further comprises reflowing the surface of the plated layer by radiation heating, after a surface temperature of the plated layer has dropped below a melting point of zinc.
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