Surface treating method for metal workpieces

A metal workpiece and surface treatment technology, applied in the direction of metal material coating process, anodization, etc., can solve the problems affecting the surface color of metal workpieces, etc., and achieve the effect of good color and good surface performance

Inactive Publication Date: 2008-06-25
SHENZHEN FUTAIHONG PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, during the dyeing process, the porous structure of the oxide film will form a layer of gray film or yellow film on the surface of the metal workpiece due to the overadsorption of the pigment body in the dye, and at the same time, in the sealing step after dyeing It is also possible to introduce impurity particles and adsorb on the surface of the metal workpiece, thereby affecting the color of the metal workpiece surface after dyeing

Method used

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Embodiment Construction

[0008] The surface treatment method of metal workpieces described in the present invention can be applied to the surface treatment process of aluminum, titanium, magnesium metal or alloy products thereof.

[0009] The surface treatment method of the metal workpiece described in the preferred embodiment of the present invention comprises the following steps:

[0010] A metal workpiece is provided, which may be metals such as magnesium, aluminum, titanium or alloy products thereof.

[0011] The metal workpiece is degreased by washing the metal workpiece with a sodium hydroxide solution or a sodium carbonate solution.

[0012] After the metal workpiece is degreased, it is placed in a water washing tank for cleaning to remove impurities on its surface.

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Abstract

The invention provides a surface treatment method for a metal workpiece, which includes the following steps: the metal workpiece is provided; the surface of the metal workpiece is conducted with anodic oxidation treatment to form an anode oxidation film on the surface of the metal workpiece; the surface of the metal workpiece is washed by water; the metal workpiece is dipped in dyeing liquor for dyeing treatment; the surface of the workpiece is washed by water; the surface of the workpiece is dipped in hole sealing solution for hole sealing treatment; the metal workpiece is washed with acetic acid.

Description

technical field [0001] The invention relates to a method for surface treatment of metal workpieces, in particular to a method for dyeing the surface of metal workpieces after anodic oxidation treatment. Background technique [0002] As we all know, alloy materials such as aluminum, titanium, and magnesium have the advantages of high strength and light weight, and are widely used in aviation, electronics, communication and other fields. However, alloy materials such as magnesium, aluminum, and titanium are prone to wear and corrosion. In order to improve the surface quality of alloy materials such as magnesium, aluminum, and titanium, the industry usually adopts anodic oxidation treatment process to achieve. [0003] A metal oxide film with a porous structure can be formed on the surface of the metal workpiece after anodic oxidation treatment. The oxide film has a good adsorption effect on the colored component of the dye. Therefore, further dyeing the metal workpiece with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F17/00C23G1/14C23G1/24C23F3/00C25D11/02C23C22/84
CPCC25D11/243C25D11/246C25D11/26C25D11/30C25D11/02C25D11/16
Inventor 林知本张勇饶志勇朱展刚胡群高
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD
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