CN101229742A - Method for coloring patterns or characters on surface of aluminum alloy material and product thereof - Google Patents

Abstract

A method for coloring pattern or character on the surface of aluminium alloy material includes such steps as providing an insulating layer on the surface of aluminium alloy material, laser carving to obtain pattern or character, electric coating to obtain a coating layer with different color, and keeping the surface smooth.

Description

A method for coloring aluminum alloy material surface patterns or characters and its products

technical field

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

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.

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

Contents of the invention

Therefore, the technical problem to be solved by the present invention is to provide a method that can form characters or patterns with various colors on the surface of the aluminum alloy material and maintain the flatness of the surface. On the one hand, it does not affect the strength of the aluminum alloy material itself, and improves the product quality.

The above-mentioned problem of the present invention is solved in this way, constructs a kind of aluminum alloy material surface pattern or character coloring method, comprises the following steps:

a. Insulate the aluminum alloy material to be colored, so that the aluminum material becomes an insulator;

b. Use laser engraving technology to engrave text or patterns on the predetermined parts of the aluminum alloy material, so that the engraved text or patterns will have a conductive effect due to the loss of its insulating layer;

c. Insulate the words or patterns carved on the aluminum alloy material, so that the words or patterns partly lose their conductive effect; then

d. Select the part of the text or pattern that is scheduled to be printed on the first color to remove its insulating layer, and use the part of the text or pattern that has been removed from the insulating layer to perform electro-painting and coloring because it is in a conductive state action;

e) Step d) is repeated, and the insulating layer and coloring of the characters or patterns to be colored by electrochromic coating are sequentially removed.

The implementation of the present invention has the following effects. Engraved characters or patterns of many different colors can be formed on the surface of the aluminum alloy material, which has richer color changes than the single color of the prior art, and the engraved characters or patterns The pattern is formed by electro-coating and coloring. Compared with the existing methods of labeling, printing or concave engraving, it can maintain the smoothness of the surface and give people a feeling of better quality.

Description of drawings

Fig. 1 is a schematic diagram of the production process of the surface pattern or text coloring method of metal materials in the prior art.

FIG. 2 is a schematic diagram of making patterns or characters on the surface of metal materials with the manufacturing process in FIG. 1 .

Fig. 3 is a schematic diagram of the production process of the method for coloring patterns or characters on the surface of metal materials according to the present invention.

FIG. 4 is a schematic diagram of forming various color patterns or characters on the surface of a metal material in the third manufacturing process.

Fig. 5 is a diagram of the use state of using the present invention to color the pattern on the surface of the metal material in three colors.

Fig. 6 is a diagram of the use status of using the present invention to write three colors on the surface of the metal material.

The symbols in the figure are uniformly explained as follows: 1 is aluminum alloy material, 2 is coating layer, 3 is pattern or text, 10 is aluminum alloy material, 20 is insulating layer, 30 is text or pattern, 40 is whale pattern, 50 is text , 60 is insulating varnish.

Detailed ways

According to the method for coloring the surface pattern or text of the aluminum alloy material of the present invention, as shown in Figure 3 and Figure 4, the steps are as follows:

a. First, an aluminum alloy material 10 to be colored is subjected to insulation treatment, that is, the aluminum alloy material is insulated into a non-conductor, that is, an insulator by means of electro-deposition coating. Of course, at this time, the aluminum alloy material 10 will be Because an insulating layer 20 is formed on the surface, the primary color of the aluminum alloy material is changed as shown in Figure 4a and Figure 4b;

b. Use laser engraving technology to engrave characters or patterns 30 at predetermined positions on the surface of the aluminum alloy material 10, such as characters such as A, B, and C as shown in Figure 4c, or whale patterns 40 as shown in Figure 5 6, there are three descriptive characters 50, and the characters or patterns 30-50 formed by laser engraving will destroy the insulating layer 20 on the surface of the aluminum alloy material 10, so that the characters or patterns 30, 40 or 50 The part loses its insulating layer protection and has the function of conducting electricity. The method of forming characters or patterns can also be formed by sandblasting or CNC computer engraving. It can be seen from the picture of Figure 4c that the engraved A, B, C and other characters are part of the system. Show the original color of the aluminum alloy material 10, so you can then use the procedure of electro-coating to plate different colors on the characters or patterns 30, 40 or 50, and therefore you can paint the characters or patterns 30, 40 or 50 in different colors. The patterns 30, 40 or 50 are displayed in different colors, which is the technical principle of the method of the present invention;

c. Insulate most of the engraved characters or patterns 30, 40 or 50 on the surface of the aluminum alloy material 10, and keep the small part of the characters or patterns that are about to be carried out in the first color without insulation Treatment, the general method of insulation treatment is to apply insulating varnish to the predetermined places of the characters or patterns 30, 40 or 50, so that these parts temporarily lose their conductive effect;

d. Use insulating varnish to make the text or pattern part not have conductive effect, and the text or pattern part that is not coated with insulating varnish can be treated by electro-coating and coloring, and it is ready for the first step During the coloring action of the two colors, the insulating layer of the characters on these parts should be removed first, so that the parts of the characters or patterns that have removed the insulating layer have a conductive effect, and then the treatment action of electro-deposition coating and coloring can be carried out ;

e. Repeat the action of step d, and sequentially remove the insulation layer and electro-coating coloring treatment for the text or pattern part that is scheduled to be colored;

In the implementation of the present invention, at first, the method steps of how these characters 30A, B, and C are formed to have three different colors are explained:

First, keep the word A without insulating varnish, and apply insulating varnish 60 on the words B, C, etc., so that the words B, C, etc. temporarily lose their conductive effect, as shown in Figure 4d;

Second, the aluminum alloy material 10 is subjected to electro-coating and coloring. Since only the word A is left without insulating paint in the characters 30 on the surface of the aluminum alloy material 10, only the word A is on the surface of the aluminum alloy material 10. When electro-coating is colored, the pigment that has conductive effect and can be used for coloring is coated on the A-shaped concave, and at the same time fills up the A-shaped part of the concave, so that the surface of the aluminum alloy material (10) can be kept flat, and another shape can be displayed. color, complete the electro-coating and coloring treatment action of the first color of these characters 30, as shown in Figure 4e (in the present embodiment, the word A is displayed in black); then

Third, select the text part B of the second color that is scheduled to be electrocoated to remove its insulating layer, as shown in Figure 4f, use the part B of the text 30B whose insulating layer has been removed because it has The conductive effect can be used for other colored pigments to coat and form the recessed B lettering, and at the same time fill the recessed B lettering part, which can keep the surface of the aluminum alloy material 10 flat and show another color, as shown in Figure 4g ( In the drawing of this embodiment, the word B is shown in red; when carrying out the electrochromic coloring action of the second color, the word C of other characters that have not been removed from the insulation process is because the surface has an insulating layer to make it It does not have a conductive effect, so there will be no problem of being coated and colored, and the characters 30A that have been colored by electro-coating are also formed because the coating layer has been formed on the word A, so it is also It has no conductive effect, so it will not be repeatedly colored during the next electro-coating coloring action;

Fourth, repeat the action of the third step, first remove the insulating layer of the parts of the characters 30C that are scheduled to be painted in the third color, as shown in Figure 4h, and then carry out electro-deposition coating The processing action of color, as shown in Figure 4I (in the present embodiment figure, C word system shows with blue appearance);

According to the steps described above, characters 30 of multiple different colors can be formed on the surface of the aluminum alloy material 10, or a whale pattern 40 of three colors as shown in FIG. Express three characters 50, so that the surface of the aluminum alloy material 10 has rich color changes, and at the same time maintain the smoothness and aesthetics of the surface of the aluminum alloy material 10, and solve the existing problem of laser engraving that makes the object sag to show the metal primary color pattern and monotony The shortcoming of the lack of change, the present invention applies various color pigments on the characters or patterns 30 by electro-deposition coating technology, so that various colors can be displayed on the surface of the aluminum alloy material 10, because electro-deposition coating The color adhesion is strong and the surface remains flat, so it can be bright and durable without falling off or discoloring easily. It eliminates the disadvantages that the label or printing is easy to fall off and the color is easy to peel off. Of course, the present invention The method can also directly form a single color different from the original color of the aluminum material on the surface of the aluminum material, such as black, red or blue. However, if you want to form a color such as black, red or blue, you must use printing or labeling. The posting method is completed, so the present invention is different from the existing method flow, and has a better product texture, which can improve the quality and value of the product.

Claims (4)

1. aluminum alloy material surface pattern or literal colorize method is characterized in that, may further comprise the steps:

A. the aluminum alloy materials of desiring to carry out painted processing is carried out insulation processing earlier, this aluminum alloy materials is become be electrical insulator;

B. utilize laser-engraving technique to carve literal or pattern at predetermined position on this aluminum alloy materials, good literal or pattern will be because of losing its insulating barrier tool electric action to make engraving;

C. engraving is good on this metal material literal or pattern are done the insulation processing, make these literal or pattern lose conductive effect at this moment; Then

D. select the literal or the pattern of first kind of color being scheduled to partly to remove the action that its insulating barrier is handled, and can utilize these literal of having removed insulating barrier or pattern, can carry out electric the painted processing of application and move partly because of the tool conductive effect;

E. repeat the action of this steps d, in regular turn to the literal of being scheduled to go up color or pattern partly remove its insulating barrier and electricity the painted processing action of application.

2. aluminum alloy material surface pattern according to claim 1 or literal colorize method is characterized in that, this literal or pattern can utilize the sandblast mode to be shaped.

3. aluminum alloy material surface pattern according to claim 1 or literal colorize method is characterized in that, this literal or pattern can utilize the CNC computer sculpture to be shaped.

4. aluminum alloy material surface pattern or literal are articles colored, it is characterized in that these goods are the body of aluminum alloy materials, and body surface has an insulating barrier, and pattern on the insulating barrier or text color are different from the color of aluminum alloy materials.

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