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Aluminum alloy polishing process

An aluminum alloy and process technology, applied in the field of aluminum alloy polishing process, can solve problems such as damage to the environment, harm to health, nitrogen oxide pollution, etc., and achieve the effect of reducing pollution and smoothing color.

Inactive Publication Date: 2014-03-26
殷定江
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AI Technical Summary

Problems solved by technology

Due to the serious air pollution of nitrogen oxides (NOx) in this polishing method, it has attracted increasing attention. NOx gas like "yellow smoke" seriously damages the environment and endangers people's health.

Method used

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Embodiment Construction

[0011] An aluminum alloy polishing process, the polishing liquid used in the polishing process includes a base liquid composed of phosphoric acid and sulfuric acid and additives composed of inorganic compounds, macromolecular organic compounds and heavy metal salts. The inorganic compound is one of boric acid, citric acid, sodium polyphosphate, ammonium sulfate, or a mixture of any two or more. The macromolecular organic compound is thiourea, propylene thiourea, 2-mercaptobenzothiazole, sodium lauryl sulfate, benzotriazole, dimethyl sulfoxide, polyethylene glycol, anthranilic acid , o-aminophenol or a mixture of any two or more. The heavy metal salt is CuSO 4 , Cu(NO 3 ) 2 、NiSO 4 、Ag 2 SO 4 , PbAc 2 、CoSO 4 One of them or a mixture of any two or more. The polishing liquid also includes an oxidizing agent, and the oxidizing agent is one of hydrogen peroxide, calcium peroxide, sodium perborate, chromium trioxide, potassium permanganate, and potassium perchlorate, or a ...

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Abstract

The invention discloses an aluminum alloy polishing process. A polishing solution adopted in the polishing process comprises a base solution and an additive, wherein the base solution is composed of phosphoric acid and sulfuric acid, and the additive is composed of an inorganic compound, an organic macromolecular compound and heavy metallic salts. According to the invention, a cast aluminum alloy surface scale and a dust adsorption film are rapidly removed by preferably using an environment-friendly chemical polishing technology realized by adding a composite component composed of an oxidant, the organic macromolecular compound, a surfactant and the heavy metallic salts into the base solution composed of phosphoric acid and sulfuric acid, so that a polished surface which is silver white, bright, smooth and uniform in color and luster is obtained, and meanwhile, the environment pollution is reduced.

Description

technical field [0001] The invention relates to an aluminum alloy polishing process. Background technique [0002] With the increasing application of aluminum alloys in daily life, people's requirements for aluminum alloys are also constantly increasing. Not only are they required to have high mechanical properties, but they are also required to have excellent decorative appearance and corrosion resistance. In order to meet this requirement, Reasonable and advanced aluminum alloy surface treatment technology is gradually being developed and applied by people. [0003] Chemical polishing is an important process in the surface treatment of aluminum and its alloys. The traditional chemical polishing is to etch aluminum products in a triacid (phosphoric acid-sulfuric acid-nitric acid) solution. Due to the serious air pollution of nitrogen oxides (NOx) in this polishing method, it has attracted increasing attention. The NOx gas like "yellow smoke" seriously damages the environme...

Claims

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Application Information

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IPC IPC(8): C23F3/03
Inventor 殷定江
Owner 殷定江
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