Mn-containing alloyed hot-dip galvanized steel sheet and method for manufacturing the same

摘要

High strength alloy galvanized galvanized steel sheet with excellent appearance and endurance and its manufacturing method.(Solution) In the Zinc-Gold plating layer,Including oxides of Fe and Mn,Including oxides and oxides of Fe and Mn,Oxides, including Fe and Mn, and Mn oxides,Including oxides of Fe and Mn and oxides of Fe and Mn,E) There is one Fe oxide and one Mn oxide.The total amount of oxide is O, 0.01~0.100g/The mass of Mn and Fe in the oxide is 0.10~10.00.From the surface of the galvanized gold layer to the whole thickness of the galvanized layer, the thickness of the galvanized layer is less than 50%.Fe.At least one of the oxides selected from Mn has a unilateral fraction of more than 60%.The zinc-plated gold layer is directly from the surface of the lower extremity steel plate to the surface of the steel plate less than 5 111 11131.Fe.At least one of the oxides selected from Mn is O, and there is 0.040g//(0).