| 摘要 |
PURPOSE:To produce an improved decorative effect by putting copper powder in a hot galvanizing bath and dipping an article to be hot galvanized in the bath while stirring the bath so as to provide a sober color to the surface of the resulting zinc layer contg. copper powder by the action of patina. CONSTITUTION:Copper powder 3 close to zinc in specific gravity is put in a hot galvanizing bath and dispersed in the bath by stirring. An article to be hot galvanized is dipped in the bath to form a zinc layer 4 contg. copper powder and having a sober color. When a zinc layer 2 is formed on an iron base 1 by conventional hot galvanization, the layer 2 has high corrosion resistance, but the surface of the layer 2 is rapidly tarnished by oxidation, losing luster, and the tarnished surface looks dirty. |
