| 摘要 |
PURPOSE:To impart excellent heat resistance, in applying melt-plating to a long material comprising iron, steel or an iron alloy by subjecting the same to flux treatment while continuously immersing the treated material in a Zn-alloy bath containing a specific amount of Al, by supplying an alloy wire having the same compositional range as the alloy bath to the immersion port of the alloy bath. CONSTITUTION:After a long material comprising iron, steel or an iron alloy is subjected to flux treatment, the treated material is immersed in a Zn-alloy bath 2 containing 0.2-14% of Al by a sinker roll 3 and drawn up through a squeeze apparatus 4 to obtain a Zn-Al alloy plated material 5. At this time, a Zn-alloy wire 6 containing 0.2-14% Al is continuously supplied to the immersion port of the plating bath 2 from a supply apparatus 7 to be melted. |
