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Polishing fluid

A polishing liquid and chemical polishing technology, applied in the field of polishing liquid, can solve the problems of high labor cost, over-corrosion, poor polishing effect, etc., and achieve the effects of less harm to people and the environment, avoiding over-corrosion and high polishing efficiency

Active Publication Date: 2019-02-26
广东东明新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] First of all, when the traditional three-acid chemical polishing solution containing nitric acid or the two-acid chemical polishing solution without nitric acid is used for chemical polishing operation on 7 series aluminum materials, it is difficult to obtain a bright and smooth surface, and over-corrosion often occurs. Problem, the overall polishing effect is poor
[0005] Secondly, although the mechanical polishing method can be used to obtain a brighter surface, there are still defects in the existing mechanical polishing technology, and the metal aluminum powder dust generated in the mechanical polishing process seriously endangers the health of workers; the production of mechanical polishing Low efficiency, high labor cost, high input cost of production equipment

Method used

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Examples

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preparation example Construction

[0040] see figure 1 , the preparation method of the polishing liquid of an embodiment, comprises the steps:

[0041] S110: adding concentrated sulfuric acid to phosphoric acid, mixing uniformly, then adding aluminum ions, and mixing uniformly to obtain a mixed solution.

[0042] S120: Add a strong oxidizing agent into the mixture, mix evenly, and dissolve it completely.

[0043] S130: Add corrosion inhibitor and brightener in sequence, heat to 60°C-80°C, keep warm for 1 hour-2 hours, mix evenly, and dissolve completely to obtain the polishing solution.

[0044] see figure 1 , the use method of the polishing liquid of an embodiment, comprises the steps:

[0045] S210: Add the polishing solution into the polishing tank, heat to 70°C-110°C, immerse the aluminum workpiece in the polishing tank, take out the aluminum workpiece after 30 seconds to 120 seconds, and let it stand for 5 seconds to 15 seconds.

[0046] S220: Immerse the aluminum workpiece into a mixed solution of 10...

Embodiment 1

[0050]

[0051] The polishing solution prepared in Example 1 was used to chemically polish the 7-series aluminum material. The polishing process parameters are as follows: temperature 85°C, time 35 seconds, 10% nitric acid and 15% hydrogen peroxide mixed solution to remove black film, after polishing, the surface of the 7 series aluminum material is bright and smooth.

Embodiment 2

[0053]

[0054] The polishing solution prepared in Example 2 was used to chemically polish the 7-series aluminum material. The polishing process parameters are as follows: temperature 100°C, time 40 seconds, 10% nitric acid and 15% hydrogen peroxide mixed solution to remove black film, after polishing, the surface of the 7 series aluminum material is bright and smooth.

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Abstract

The invention relates to a polishing solution which is prepared from the following components in parts by mass: 1020-1360 parts of phosphoric acid, 367-734 parts of sulfuric acid, 3-30 parts of aluminum ions, 5-40 parts of a strong oxidant, 0.5-10 parts of a corrosion inhibitor and 0.1-4 parts of a brightener. According to the polishing solution, with synergistic matching of the phosphoric acid, the sulfuric acid, the aluminum ions, the strong oxidant, the corrosion inhibitor and the brightener, the problem of over-corrosion of an aluminum material can be effectively solved, and in addition, the polishing solution can also ensure better polishing effect and higher polishing efficiency; meanwhile, the polishing solution is almost harmless to personnel and environment; and in addition, the polishing solution is particularly suitable for a chemical polishing procedure of 7-series aluminum material.

Description

technical field [0001] The invention relates to the technical field of aluminum material polishing, in particular to a polishing liquid. Background technique [0002] At present, aluminum alloy products, as one of the most important alloys in alloy materials, are more and more widely used in various industries. For example, 7 series aluminum alloys mainly include Al-Zn-Mg-Cu aluminum alloys. Different from ordinary aluminum, zinc is the main alloying element of 7-series aluminum. Adding a little copper and magnesium can make the material heat-treated and achieve very high-strength properties. Its hardness is close to that of steel and has good wear resistance. , Strong corrosion resistance. Due to the excellent properties of 7-series aluminum, it is mainly used in aerospace fixtures, trucks, tower buildings, ships, pipelines and other architectural applications that require strength. Such as: aircraft parts, gears and shafts, fuse parts, instrument shafts and gears, missil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K13/06C23F3/03
CPCC09K13/06C23F3/03
Inventor 谢绍俊况金权
Owner 广东东明新材科技有限公司