Aluminum material with dye on surface

Abstract

The invention relates to an aluminum material with dye on the surface and belongs to the technical field of civil functional aluminum material processing. A preparation method of the aluminum materialwith the dye on the surface comprises the steps that an aluminum part serves as an anode to be immersed in an electrolyte with the nitric acid content being 45-55wt%, under the conditions that the current density is 2400-2600 A / m<2>, the working voltage is 13.5-16.5 V, and the electrolytic temperature is 21-27 DEG C, electrolytic oxidation is conducted for 20-25 min, and thus a layer of anodic oxide film is obtained on the surface of the aluminum part; then the aluminum part subjected to anodic oxidation is immersed into coloring liquid for dye coloring; the colored aluminum part is immersedinto a hole sealing solution for hole sealing; and the aluminum part subjected to hole sealing is placed in a spraying chamber, mixed coating is sprayed in the electrostatic environment and under thecondition of 100,000 grades or above of dust prevention, a 20-35 [mu]m of functional coating layer is formed on the surface of the aluminum part, and finally, a finished product is obtained through curing.

Description

technical field [0001] The invention relates to an aluminum material with dye on the surface, which belongs to the technical field of civil functional aluminum material processing. Background technique [0002] In the prior art, due to its light weight, low cost, easy processing and molding, and easy coloring and dyeing, aluminum can be processed into various colors. Therefore, it has been widely used. panels and profiles. However, limited by the physical and chemical properties of aluminum itself, on the one hand, its surface hardness is low, and it is prone to scratches or scratches; on the other hand, the color of the panels and profiles produced can remain bright for a period However, after a period of time (usually about one-third of its equipment life), its color will become lighter or even completely faded, especially in an environment with strong light intensity and long light time, it can keep bright The degree time will be shorter. In the 1990s, a stainless-stee...

AI Technical Summary

Problems solved by technology

However, limited by the physical and chemical properties of aluminum itself, on the one hand, its surface hardness is low, and it is prone to scratches or scratches; on the other hand, the color of the panels and profiles produced can remain bright for a period However, after a period of time (usually about one-third of its equipment life), its color will become lighter or even completely faded, especially in an environment with strong light intensity and long light time, it can keep bright degree time will be shorter

In the 1990s, a stainless-steel-like aluminum profile appeared on the market. It used electrophoresis to form a layer of stainless steel-like metal color film on the surface of the aluminum profile. Although its surface hardness is higher than that of conventional aluminum profiles Slightly higher, but the time it can maintain (including hardness and color) is not too long, so its durability is poor