Anode treatment method of aluminium alloy

A technology of anodizing, aluminum alloy

Active Publication Date: 2013-01-23
MITAC PRECISION TECH(KUNSHAN) CORP
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Problems solved by technology

[0003] At present, the anodic oxidation treatment seen on the market is mostly used in aluminum, aluminum alloy sheet or extruded profile products, and aluminum die castings are more and more widely used recently, such as radiators, automobile fasteners and other products, but due to aluminum alloy Die-casting materials contain many metal elements, such as copper, silicon, iron and other special metal components, which make the metal structure of die-casting uneven, making it difficult to obtain samples with uniform color after anodizing the surface of aluminum die-casting parts, and the yield rate is relatively low, which limits its widespread use
[0004] Chinese

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  • Anode treatment method of aluminium alloy

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Embodiment Construction

[0026] see figure 1 As shown, it depicts a flow chart of the steps of the aluminum alloy anodic treatment method of the present invention.

[0027] In the first embodiment of the present invention, the aluminum alloy anodic treatment method of the present invention comprises the following steps:

[0028] Step 101: Sandblasting the ADC6 aluminum alloy die-casting to make the appearance change uniformly and achieve the purpose of appearance decoration; then put it into the degreasing tank for degreasing treatment to remove or soften the surface grease, and use acid degreasing agent for degreasing Sulfuric acid, the concentration of this sulfuric acid is 15wt%; Carry out alkali washing after washing, remove surface passivation coating, the surface can produce black powder scale, alkali washing solvent is sodium hydroxide solution, and its concentration is 15wt%;

[0029] Step 102: In order to increase its brightness, the above-mentioned aluminum alloy die-casting is washed with ...

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Abstract

An anode treatment method of aluminium alloy is used for coloring treatment of die castings of aluminium alloy. The method comprises the following steps: (1) providing a die casting of the aluminium alloy for pre-treating; (2) using an anodized polishing liquid for chemical polishing of the die casting of the aluminium alloy; (3) performing a first glaring treatment for the chemically polished die casting of the aluminium alloy; (4) performing a second glaring treatment for the die casting of the aluminium alloy; (5) dipping the die casting of the aluminium alloy with the second glaring treatment in an acid storage, and electrifying for the anode oxidation treatment; (6) putting the die casting of the aluminium alloy into a staining solution to dye in accordance with required colors; and (7) immersing the dyed die casting of the aluminium alloy into a sealant to seal pores. The anode treatment method of the aluminium alloy can produce uniform-color die-casted aluminum alloy products which can be colored with various colors.

Description

【Technical field】 [0001] The invention relates to an aluminum alloy anodic treatment method, in particular to a surface treatment method for anodic coloring of aluminum alloy die castings. 【Background technique】 [0002] Anodic treatment is a widely used surface treatment technology. It is a surface treatment technology that has long been used in electrochemistry. Anodized treatment is generally used in: A. Increase corrosion resistance; B. Increase wear resistance; C , Improve the adhesion between the substrate and the coating; D, provide an insulating surface; E, heat dissipation; F, protect the polished and machined surface; G, improve the appearance, etc. [0003] At present, the anodic oxidation treatment seen on the market is mostly used in aluminum, aluminum alloy sheet or extruded profile products, and aluminum die castings are more and more widely used recently, such as radiators, automobile fasteners and other products, but due to aluminum alloy Die-casting materi...

Claims

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Application Information

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IPC IPC(8): C25D11/14C25D11/18C25D11/08
Inventor 郭雪梅林吉政
Owner MITAC PRECISION TECH(KUNSHAN) CORP
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