| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dyed surface of a metal which is free from the separation or corrosion of the dyed surface. Ž<P>SOLUTION: The method involves a step of removing oil and fat from the surface of a metal and forming a large number of pits in the surface of the metal by a solution obtained by mixing 450 g of hydrochloric acid, 350 g of water, and 200 g of sulfuric acid; a step of removing the acidic solution remaining on the surface of the metal surface with water; a step of injecting a coloring agent in a large number of the pits by submerging the metal in the coloring agent; a step of removing the excess coloring agent existing in the surface of the metal treated in the previous step with a solution obtained by adding 1 mL of an acidic solution to 10 L of water and stirring the solution by injecting air to fluidize the solution; and a step of burning the water remaining in the surface of the metal surface, applying a dry resin and oily wax to the surface of the metal, and burning the surface of the metal. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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