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Method for carrying out two-color wire drawing and film coating on surface of aluminum alloy

A technology for aluminum alloy surface and color drawing, which is applied in the processing field of aluminum alloy, can solve the problems of complex and unfriendly process of double color drawing, and achieve the effect of excellent function, good appearance and less waste gas and waste water.

Inactive Publication Date: 2012-07-18
XIAMEN RUNNER IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a method for coating the aluminum alloy surface with two-color wire-drawing coating with simple process and the appearance of the double-color wire-drawing parts in order to solve the problems of non-environmental protection and complicated process in the existing two-color wire drawing on the aluminum alloy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 An example of red-plated bronze wire drawing of an aluminum alloy tuyere

[0029] 1) Perform pretreatment (degreasing, alkali etching, light emitting) on ​​the tuyeres punched by the aluminum alloy sheet.

[0030] 2) Anodize the workpiece treated in step 1 and dye it red copper.

[0031] 3) Dry the anodized and dyed workpiece at 100°C for 10 minutes, and then coat it with black film by PVD.

[0032] 4) Pull out the required pattern on the workpiece coated with black film to expose the copper-colored metal of the substrate.

[0033] 5) Perform ion flame treatment and electrostatic dust removal on the drawn aluminum alloy parts.

[0034] 6) Electrophoresis a layer of 25 μm transparent high-gloss paint on the aluminum alloy parts after step 5).

[0035] The products obtained by this process can achieve the tuyere with the appearance of black and red bronze wire drawing, and can pass the following functional tests:

[0036] (A) CASS anti-corrosion: 8h;

[003...

Embodiment 2

[0042] Example 2 An example of an aluminum alloy lock cover plated with blackened green bronze wire drawing

[0043] 1) Perform pretreatment (degreasing, alkali etching, light emitting) on ​​the lock cover stamped from the aluminum alloy sheet.

[0044] 2) Anodize the workpiece treated in step 1 and dye it bronze.

[0045] 3) Dry the anodized and dyed workpiece at 110°C for 8 minutes, and then coat it with black film by PVD.

[0046] 4) Pull out the required texture on the workpiece coated with black film to expose the bronze-colored metal of the substrate.

[0047] 5) Perform ion flame treatment and electrostatic dust removal on the drawn aluminum alloy parts.

[0048] 6) Spraying a layer of 35 μm transparent high-gloss powder coating on the aluminum alloy parts after step 5).

[0049] The products obtained by this process achieve the lock cover with blackened bronze brushed appearance, and can pass the following functional tests:

[0050] (A) CASS anti-corrosion: 8h;

...

Embodiment 3

[0056] Example 3 An example of blackened and yellowed bronze wire drawing of an aluminum alloy handle

[0057] 1) Perform pretreatment (degreasing, alkali etching, light emitting) on ​​the lock cover stamped from the aluminum alloy sheet.

[0058] 2) Anodize the workpiece treated in step 1 and dye it brass.

[0059] 3) Dry the anodized and dyed workpiece at 120°C for 5 minutes, and then coat it with black film by PVD.

[0060] 4) Pull out the required texture on the workpiece coated with black film to expose the brass-colored metal of the substrate.

[0061] 5) Perform ion flame treatment and electrostatic dust removal on the drawn aluminum alloy parts.

[0062] 6) Spraying a layer of 20 μm UV-curable coating on the aluminum alloy parts after step 5).

[0063] The products obtained by this process can achieve the handle of blackened yellow bronze brushed appearance, and can pass the following functional tests:

[0064] (A) CASS anti-corrosion: 4h;

[0065] (B) 4 cycles of c...

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Abstract

A method for carrying out two-color wire-drawing and film-coating on the surface of an aluminum alloy relates to a method for processing an aluminum alloy. The method for carrying out two-color wire-drawing and film-coating on the surface of the aluminum alloy is provided, which is simple in process and is capable of obtaining the shape of a two-color wire-drawn piece. The method comprises the following steps of: pre-treating an aluminum alloy blank; performing anodic oxidation dyeing on the pre-treated aluminum alloy blank; drying the dyed aluminum alloy blank and then putting in a physical vapor deposition plating furnace; depositing a color film on the obtained pre-treated aluminum alloy blank in vacuum; wire-drawing the aluminum alloy blank coated with the color film to obtain required lines; spraying a finishing top-coat on the wire-drawn workpiece to obtain the aluminum alloy with the surface subjected to two-color wire-drawing and film-coating. As being tested, the aluminum alloy has the characteristics of corrosion prevention, corrosion resistance, weather resistance, temperature resistance, colorfulness and the like, and also is comparable with the traditional water plated metal product in quality; besides, the method is simple in process steps, less in the consumption amount of metals, and fewer in generated waste gas and waste water, thereby being an economic environment-friendly novel coating technique. The aluminum alloy is very suitable for industries such as bathroom accessories, electronics, household appliances and automobiles.

Description

technical field [0001] The invention relates to a processing method of an aluminum alloy, in particular to a method for coating a two-color wire-drawn film on the surface of an aluminum alloy. Background technique [0002] With the improvement of people's living standards, a single bright chromium water electroplating can no longer meet the diverse needs of people, so it is a trend to perform colorful coatings on metal surfaces. At present, the two-color wire drawing process on the surface of aluminum alloy (referring to the wire drawing appearance with two colors such as imitation bronze, red bronze, yellow bronze, etc.) is to chemically blacken after electroplating brass or red copper or bronze with water, and then The process of drawing and spraying glossy finish paint. This traditional two-color wire drawing process has the following disadvantages: (1) complex process (polishing of metal parts - degreasing and waxing - electroplating brass, bronze, red copper - chemical...

Claims

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Application Information

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IPC IPC(8): B44C5/04C25D11/14C23C14/22B44D5/10
Inventor 吴子豹王应泉王飞李明仁
Owner XIAMEN RUNNER IND CORP
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