Method for coloring pattern or character on surface of aluminum alloy material and product thereof

Abstract

The invention relates to a method for coloring surface pattern or character of aluminum alloy material and products thereof. The method comprises the following steps: a surface of the aluminum alloy material is provided with an insulating layer and the pattern or character is carved by laser to become a status of local insulation and local conduction ; then by using a way of electrical coating, the conductive part of the pattern or character is sequentially processed by electrical draping to enable the pattern or character to have a draping layer different with the color of the aluminum alloy material and represent different colors as well as keeping a flat surface.

Description

technical field [0001] The present invention relates to a coloring method, in particular, to a method for coloring patterns or characters on the surface of an aluminum alloy material and its products, more specifically, to a method of engraving patterns or characters by laser, and changing the patterns or characters It is in a state of partial insulation and partial conductivity, so that the conductive part of the pattern or text can be treated with electro-deposition coating to make it appear different from the color of the aluminum alloy material. Background technique [0002] Bicycle parts known in the prior art, automobile rims, optical equipment parts, and aerospace industry parts require light weight, high-strength workpieces, mostly made of aluminum, magnesium or titanium alloys; and in order to make the workpiece wear-resistant, Corrosion resistance and high voltage resistance, it is often used to anodize the workpiece to form an oxide film on the surface of the work...

AI Technical Summary

Problems solved by technology

[0002] Bicycle parts known in the prior art, automobile rims, optical equipment parts, and aerospace industry parts require light weight, high-strength workpieces, mostly made of aluminum, magnesium or titanium alloys; and in order to make the workpiece wear-resistant, Corrosion resistance and high voltage resistance, it is often used to anodize the workpiece to form an oxide film on the surface of the workpiece. On the one hand, it can resist oxidation and insulate the workpiece. Various colors can increase the color change and texture of the workpiece; however, the logo pattern or text on such workpieces can only be expressed by laser engraving technology on the surface of the workpiece, or printed or printed. superior

[0003] Known methods for coloring patterns or characters on the surface of aluminum alloy materials, such as figure 1 and figure 2 As shown, when the aluminum alloy material 1 is surface-treated, a coating layer 2 is formed on the surface of the aluminum alloy material, and the surface of the aluminum alloy material 1 is displayed in the color of the coating layer 2, as shown in figure 2 As shown in b, then use laser engraving logo pattern or text 3, such as figure 2 The ABC shown in c; however, laser engraving technology is a method of destroying the coating layer on the surface of the workpiece, that is, the engraved text or pattern 3 becomes the original aluminum alloy material 1 (before surface treatment) itself that is depressed The original color of the material, so there is only one color on the aluminum alloy material 1 to express the pattern or text to be marked, which is not only monotonous, but also lacks change; another traditional way is to mark the pattern or text by sticking a label Text, because the label is easy to fall off and lacks texture, destroying the value and beauty of the workpiece, or printing the logo pattern or text directly on the surface of the workpiece, this printing is also extremely easy to scratch off, destroying the value and beauty of the workpiece Aesthetics, and become a shortcoming that the industry has been working hard and desperately trying to improve

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