Surface treatment method for metal workpiece and dyeing pretreatment agent

A technology for pre-dying treatment and metal workpieces, which is applied in the direction of surface reaction electrolytic coating, anodizing, electrolytic coating, etc., and can solve the problem of uneven dyeing.

Inactive Publication Date: 2019-06-04
HONGFUJIN PRECISION ELECTRONICS ZHENGZHOU +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, it is necessary to provide a surface treatment method for me

Method used

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  • Surface treatment method for metal workpiece and dyeing pretreatment agent
  • Surface treatment method for metal workpiece and dyeing pretreatment agent

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Embodiment Construction

[0009] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0010] Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0011] see figure 1 , the method for surface treatment of a metal workpiece according to an embodiment of the present invention is used for anodizing and dyeing a metal workpiece, and the metal workpiece may be aluminum, titanium, magnesium or alloys thereof.

[0012] The anodic oxidation dyeing method of the metal workpiece of the embodiment of the present invention comprises the following steps:

[0013] Step S101: making a metal workpi...

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Abstract

The invention provides a surface treatment method for a metal workpiece. The surface treatment method comprises the following steps that anodic oxidation treatment is performed on a metal workpiece soas to form an anodic oxidation film on the surface of the metal workpiece; the metal workpiece subjected to anodic oxidation treatment is placed in a dyeing pretreatment agent for activating treatment, wherein the dyeing pretreatment agent comprises composite organic acid and sodium acetate; the metal workpiece is placed in a dyeing solution for dyeing treatment; and hole sealing treatment is performed on the metal workpiece. The invention also provides the dyeing pretreatment agent. The surface treatment method for the metal workpiece comprises the step of activating treatment so that the residual acidic solution in a through hole or a blind hole of the metal workpiece can be removed, the phenomenon of uneven dyeing is avoided, and the dyeing quality is improved.

Description

technical field [0001] The invention relates to a surface treatment method for metal workpieces, in particular to a dyeing method for the surface of metal workpieces after anodic oxidation treatment and a pre-dyeing treatment agent. Background technique [0002] Metal products, such as aluminum / aluminum alloy, magnesium / magnesium alloy or titanium / titanium alloy, are generally anodized to form an anodized film with better wear resistance on the surface. In order to diversify the surface color of the product, the product will be dyed after anodizing. However, during the anodizing process, the anodizing solution may penetrate into the through holes or blind holes of the product. Therefore, during the dyeing process, the metal product is prone to uneven dyeing due to the residual acidic anodizing solution . Contents of the invention [0003] In view of this, it is necessary to provide a surface treatment method for metal workpieces and a pre-dyeing treatment agent to solve ...

Claims

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Application Information

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IPC IPC(8): C25D11/02
CPCC25D11/08C25D11/16C25D11/243C25D11/246C25D11/26C25D11/30
Inventor 彭小刚房凯裴永德白成斌刘伟王奇
Owner HONGFUJIN PRECISION ELECTRONICS ZHENGZHOU
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