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Chemical polishing liquid with aluminum and aluminum alloy

A chemical polishing and aluminum alloy technology, which is applied in the field of aluminum and aluminum alloy chemical polishing liquid, can solve the problems of fast nitric acid decomposition, yellow smoke pollution, high processing cost, etc., and achieve the effect of high polishing precision, no corrosion pitting, and rapid polishing

Inactive Publication Date: 2015-03-04
WUXI HONGSHENG ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional aluminum alloy chemical polishing solution has the following disadvantages: the nitric acid decomposes too quickly, the pollution of a large amount of yellow smoke is serious, the treatment cost is expensive, and it is easy to oxidize and lose gloss after a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The formula of aluminum and aluminum alloy chemical polishing liquid of the present invention is as follows:

[0013] Phosphoric acid 4.5kg, sulfuric acid 1.5kg, tartaric acid 0.3kg, glacial acetic acid 0.05kg, nonionic surfactant 0.3kg, ammonium sulfate 0.16kg, ethylene glycol 1.6kg, water 170kg.

Embodiment 2

[0015] The formula of aluminum and aluminum alloy chemical polishing liquid of the present invention is as follows:

[0016] Phosphoric acid 4kg, sulfuric acid 1kg, tartaric acid 0.4kg, glacial acetic acid 0.06kg, nonionic surfactant 0.4kg, ammonium sulfate 0.18kg, ethylene glycol 1.5kg, water 150kg.

Embodiment 3

[0018] The formula of aluminum and aluminum alloy chemical polishing liquid of the present invention is as follows:

[0019] Phosphoric acid 5kg, sulfuric acid 2kg, tartaric acid 0.2kg, glacial acetic acid 0.04kg, nonionic surfactant 0.2kg, ammonium sulfate 0.15kg, ethylene glycol 1.8kg, water 180kg.

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PUM

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Abstract

The invention provides a chemical polishing liquid with aluminum and aluminum alloy. The chemical polishing liquid comprises the following components in parts by weight: 4-5 parts of phosphoric acid, 1-2 parts of sulfuric acid, 0.2-0.4 part of tartaric acid, 0.04-0.06 part of glacial acetic acid, 0.2-0.4 part of non-ionic surface active agent, 0.15-0.18 part of ammonium sulfate, 1.5-1.8 parts of ethylene glycol and 250-280 parts of water. The chemical polishing liquid provided by the invention has the advantages that the preparation is simple, the polishing is rapid, no yellow smoke is generated in the polishing process, the polishing accuracy is high and no corrosion pittingis formed on the surface.

Description

technical field [0001] The invention relates to a chemical polishing liquid for aluminum and aluminum alloy. Background technique [0002] Chemical polishing of aluminum and aluminum alloys is a chemical processing method that selectively self-dissolves them in acidic or alkaline electrolyte solutions to reduce their surface roughness and pH. This polishing method has the advantages of simple equipment, not limited by the size of the workpiece, high polishing speed and low processing cost. [0003] The traditional aluminum alloy chemical polishing solution has the following disadvantages: the decomposition of nitric acid is too fast, the pollution of a large amount of yellow smoke is serious, the treatment cost is expensive, and it is easy to oxidize and cause loss of gloss over time. Contents of the invention [0004] In order to solve the problems in the prior art, the invention provides a chemical polishing solution for aluminum and aluminum alloys. [0005] The inven...

Claims

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Application Information

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IPC IPC(8): C23F3/03
Inventor 王洪初
Owner WUXI HONGSHENG ALUMINUM IND
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