| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot dip metal plating method for a steel sheet where, using a continuous hot dip metal plating device provided with a plating pot and a melting pot, the generation of dross in the melting pot can be suppressed. SOLUTION: Regarding the hot dip metal plating method for a steel sheet, using a continuous hot dip metal plating device provided with: a plating pot storing a hot dip metal for plating, and in which a steel sheet is dipped, so as to apply plating; a melting pot melting the ingot of a metal for plating for feeding the molten metal for plating to the plating pot; and a connection part connecting the plating pot and the melting pot, and in which the plating pot and the melting pot are connected in such a manner that the liquid faces of the molten metal for plating in the plating pot, the melting pot and the connection part are made coincident, plating is applied to the steel sheet in such a manner that, provided that the average temperature of the plating pot is defined as T1 (K), the average temperature of the melting pot is defined as T2 (K), and the volume expansion ratio of the molten metal is defined asβ(K<SP>-1</SP>), inequality (1):¾T1-T2¾×β≤7×10<SP>-4</SP>is satisfied. COPYRIGHT: (C)2009,JPO&INPIT
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