Surface treating method for metal workpieces

A metal workpiece and surface treatment technology, which is applied in metal material coating process, surface reaction electrolytic coating, anodic oxidation, etc., can solve the problems that it is difficult to remove the anodic oxidation solution, and the acidic anodic oxidation solution is easy to remain in the welding place of the metal workpiece, etc. , to prevent staining or fading effect

Inactive Publication Date: 2008-06-25
SHENZHEN FUTAIHONG PRECISION IND CO LTD
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  • Abstract
  • Description
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Problems solved by technology

However, subsequent water washing is difficult to remove the anodizing solution in the depth of the gap, so that the acidic anodizing solution is likely to remain in the welded part of the metal workpiece.

Method used

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Examples

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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. The metal workpiece is formed with a weld zone during laser welding.

[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, and the metal workpiece is provided with a welding zone which is formed during welding; 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 metal workpiece is immersed in activate fluid to conduct activating treatment to the welding zone; 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.

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
CPCC25D11/02C25D11/16C25D11/243C25D11/246C25D11/26C25D11/30
Inventor 林知本张勇饶志勇朱展刚
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD
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