Surface polishing treatment method for aluminum products

A technology of surface polishing and treatment method, applied in the field of aluminum product processing, to achieve the effect of optimizing the content of added components, slowing down corrosion and controlling pitting corrosion

Inactive Publication Date: 2017-12-08
ANHUI FENGJIE METAL RESOURCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to address the existing problems and provide a surface polishing treatment method in the processing of aluminum products. Optimization of process conditions and other aspects to solve existing problems

Method used

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  • Surface polishing treatment method for aluminum products

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Effect test

Embodiment 1

[0017] A surface polishing treatment method in aluminum product processing, comprising the following steps:

[0018] (1) Prepare acidic chemical polishing base liquid: mix sulfuric acid solution and phosphoric acid solution according to the volume ratio of 2.0:0.8, the molar concentration of sulfuric acid solution is 1.5 mol / liter, and the molar concentration of phosphoric acid solution is 1.2 mol / liter. Aluminum nitrate was added to the liquid to make the concentration of aluminum ions in the base liquid 0.10 mol / liter;

[0019] (2) Add a surfactant with a mass fraction of 0.1% to the base liquid in step (1), stir for 20 minutes under heating in a water bath at a temperature of 40°C, and then add a mass fraction of 3% to the mixing system The absorption conversion agent contains urea, sulfamic acid, triethanolamine, magnesium oxide, zinc oxide, calcium oxide, and liquid paraffin. Stir it evenly, place it on an electric heating plate and heat it, and when the temperature rises...

Embodiment 2

[0026] A surface polishing treatment method in aluminum product processing, comprising the following steps:

[0027] (1) Prepare acidic chemical polishing base liquid: mix sulfuric acid solution and phosphoric acid solution according to the volume ratio of 2.2:0.9, the molar concentration of sulfuric acid solution is 1.8 mol / liter, and the molar concentration of phosphoric acid solution is 1.3 mol / liter. Add aluminum nitrate in the liquid, so that the concentration of aluminum ions in the base liquid is 0.11 mol / liter;

[0028] (2) Add a surfactant with a mass fraction of 0.15% to the base liquid in step (1), stir for 25 minutes under heating in a water bath at a temperature of 45°C, and then add a mass fraction of 4% to the mixing system The absorption transformation agent contains urea, sulfamic acid, triethanolamine, magnesium oxide, zinc oxide, calcium oxide, liquid paraffin, stirs evenly, puts it on the electric hot plate to heat, when the temperature rises to 140 ℃, name...

Embodiment 3

[0035] A surface polishing treatment method in aluminum product processing, comprising the following steps:

[0036] (1) Prepare acidic chemical polishing base liquid: mix sulfuric acid solution and phosphoric acid solution according to the volume ratio of 2.5:1, the molar concentration of sulfuric acid solution is 2.0 mol / liter, and the molar concentration of phosphoric acid solution is 1.2-1.5 mol / liter. Aluminum nitrate is added to the polishing base liquid so that the concentration of aluminum ions in the base liquid is 0.12 mol / liter;

[0037] (2) Add a surfactant with a mass fraction of 0.1-0.2% to the base liquid in step (1), stir for 30 minutes under heating in a water bath at a temperature of 50°C, and then add a mass fraction of 5% absorption transformation agent, the absorption transformation agent contains urea, sulfamic acid, triethanolamine, magnesium oxide, zinc oxide, calcium oxide, liquid paraffin, stir evenly, place on an electric heating plate to heat, when ...

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Abstract

The invention relates to the technical field of aluminum product processing, and discloses a surface polishing treatment method for aluminum products. The process comprises the following steps: by using phosphoric acid and sulfuric acid as chemical polishing base liquid, adding a certain amount of surfactant and absorption conversion agent into the base liquid, wherein the surfactant has important roles of improving the brightness of polishing, slowing down corrosion, leveling a surface and the like, and also can effectively control point corrosion, and the absorption conversion agent can restrain the generation of toxic gas such as nitrogen oxides, transform the toxic gas into non-toxic substances, and dissolve in the polishing liquid, and the method disclosed by the invention solves the existing problems from the aspects of selection of the chemical polishing base liquid, selection of additive components in the polishing liquid, optimization of the content of the additive components in the polishing liquid, optimization of polishing process conditions, and the like.

Description

technical field [0001] The invention belongs to the technical field of aluminum product processing, and in particular relates to a surface polishing treatment method in aluminum product processing. Background technique [0002] Aluminum is an element with abundant reserves in nature. Aluminum has excellent physical and chemical properties such as light weight, good ductility, and strong corrosion resistance, as well as excellent surface treatment functions. It is widely used in instruments, daily hardware, machinery, construction, chemical industry, It is widely used in transportation, aviation, national defense, communication and high-tech fields. At present, the consumption of aluminum in the world is increasing year by year, and the annual output is second only to steel, ranking first in non-ferrous metals. With the development of industrial technology, the improvement of processing precision, and the emergence of new materials and new processes, higher and higher requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F3/03
CPCC23F3/03
Inventor 崔大海房玉菡
Owner ANHUI FENGJIE METAL RESOURCES CO LTD
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