| 摘要 |
PURPOSE: A hot-dipping bath, plating structure steel, and a plating structure steel manufacturing method are provided to obtain a structure steel having superior corrosion resistant properties and sacrificed protection properties by a film on a passive state metal and corrosion resistance and workability for long and short terms. CONSTITUTION: A plating structure steel manufacturing method includes the following steps of: reducing an Fe-containing oxide thin film after forming the Fe-containing oxide thin film on the surface of plating structure steel; and hot-dipping the structure steel by inserting the structure steel into a hot-dipping bath. The hot-dipping bath comprises 8-10 wt% of Si, 3-5 wt% of Mg, 0.5-1.5 wt% of Fe, 0.01-0.04 wt% of Sr, 0.02 wt% or less of unavoidable impurities, and the rest of Al. |
