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Chemical polishing solution for cast aluminium alloy and polishing technology

A casting aluminum alloy and chemical polishing technology, which is applied in the field of casting aluminum alloy chemical polishing liquid and polishing technology, can solve the problems of many electrolytic polishing and difficult to find electrolytic polishing parameters, etc., and achieve high polishing finish, good polishing effect and high polishing efficiency Effect

Inactive Publication Date: 2014-08-27
HUBEI SANJIANG AEROSPACE WANFENG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is necessary to test different polishing parameters, but there are many parameters that affect electrolytic polishing, and it is difficult to find accurate electrolytic polishing parameters

Method used

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  • Chemical polishing solution for cast aluminium alloy and polishing technology
  • Chemical polishing solution for cast aluminium alloy and polishing technology
  • Chemical polishing solution for cast aluminium alloy and polishing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Prepare cast aluminum alloy polishing liquid A, in 1 liter of volume, polishing liquid A is made up of the raw material of following weight ratio:

[0035] Concentration of 65% nitric acid 600mL

[0036] Concentration of 40% hydrofluoric acid 200mL

[0037] Distilled water 200mL

[0038] Preparation method: (1) Use a graduated cylinder accurate to 0.1ml to measure distilled water and pour it into a beaker for use; (2) Use a graduated cylinder accurate to 0.1ml to measure the required amount of nitric acid and pour it into the beaker of the above step (1) for use (3) adopt the measuring cylinder accurate to 0.1ml to measure the required amount of hydrofluoric acid and pour it into the beaker of the above-mentioned steps (2), and both mix evenly.

[0039] Preparation of polishing solution B:

[0040] Based on a volume of 1 liter, the polishing solution B is composed of the following raw materials in the weight ratio:

[0041]

[0042] The preparation method compris...

Embodiment 2

[0055] A kind of casting aluminum alloy polishing fluid A, in volume 1 liter, polishing fluid A is made up of the raw material of following weight ratio:

[0056] Concentration of 65% nitric acid 675mL

[0057] 40% hydrofluoric acid 225mL

[0058] Distilled water 100mL

[0059] Preparation method: (1) use a measuring cylinder accurate to 0.1ml to measure distilled water and pour it into a beaker for use; (2) adopt a measuring cylinder accurate to 0.1ml to measure nitric acid and pour it into the beaker of the above step (1) for use; (3) ) Use a graduated cylinder accurate to 0.1ml to measure hydrofluoric acid and pour it into the beaker of the above step (2), and mix well.

[0060] Based on a volume of 1 liter, the polishing solution B is composed of the following raw materials in the weight ratio:

[0061]

[0062] The preparation method comprises the following steps:

[0063] (1) Use a graduated cylinder accurate to 0.1ml to measure distilled water and pour it into a be...

Embodiment 3

[0076] A kind of casting aluminum alloy polishing fluid A, in volume 1 liter, polishing fluid A is made up of the raw material of following weight ratio:

[0077] 750mL of 65% nitric acid

[0078] Concentration of 40% hydrofluoric acid 250mL

[0079] Distilled water 0mL

[0080] Preparation method: (1) use a measuring cylinder accurate to 0.1ml to measure distilled water and pour it into a beaker for use; (2) adopt a measuring cylinder accurate to 0.1ml to measure nitric acid and pour it into the beaker of the above step (1) for use; (3) ) Use a graduated cylinder accurate to 0.1ml to measure hydrofluoric acid and pour it into the beaker of the above step (2), and mix well.

[0081] Based on a volume of 1 liter, the polishing solution B is composed of the following raw materials in the weight ratio:

[0082]

[0083] The preparation method comprises the following steps:

[0084] (1) Use a graduated cylinder accurate to 0.1ml to measure distilled water and pour it into a...

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Abstract

The invention provides a chemical polishing solution for cast aluminium alloy and a polishing technology. The polishing solution comprises a polishing solution A and a polishing solution B. The polishing solution A comprises the following compositions in percent by volume: 60%-75% of nitric acid and 20%-25% of hydrofluoric acid. The polishing solution B comprises the following compositions in percent by weight: 60%-70% of phosphoric acid, 8%-9% of sulfuric acid, 8%-9% of nitric acid, 2%-3% of urea and 4%-5% of ammonium sulfate. The polishing technology comprises: performing cleaning processing on the surface of a cast aluminium alloy ZL104 product, putting in the polishing solution A to remove silicon on the product surface, and then putting in the polishing solution B for reacting for 2 min, controlling the temperature of the polishing solution B to be 85+ / -5 DEG C, so as to enable the product to be selectively self dissolve in the polishing solution B, and further to level and polish the cast surface and realize the purpose of reducing the surface roughness Ra. The polishing solution and the polishing technology have the advantages that the appearance of cast aluminium alloy shows aluminium natural color, the polishing finish is high, the polishing efficiency is high and the polishing effect is excellent, and the polishing solution and the polishing technology are widely applicable to polishing of cast aluminium alloy materials.

Description

technical field [0001] The invention relates to a casting aluminum alloy chemical polishing solution and a polishing process method, belonging to the technical field of polishing technology, in particular to a casting aluminum alloy ZL104 chemical polishing solution and a polishing process method. Background technique [0002] Aluminum alloy materials are widely used in various industries due to their low density, high plasticity, easy strengthening, good electrical conductivity, corrosion resistance, and easy surface treatment. Cast aluminum alloy is a large category of aluminum alloys. Some cast aluminum alloy ZL104 products, as the key parts of the product, have high requirements for their appearance and quality. However, the cast aluminum alloy ZL104 has a high silicon content, and the ordinary surface treatment is black, which cannot meet the appearance requirements of bright aluminum. Traditional mechanical polishing works well to remove scale and scratches, but it wi...

Claims

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Application Information

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IPC IPC(8): C23F3/03
Inventor 孙雪芳王翔奂玖平郑灵玲刘杰周卫华闫桂娟黄政
Owner HUBEI SANJIANG AEROSPACE WANFENG TECH DEV
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