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Electrolytic polishing agent

An electrolytic polishing and coupling agent technology, which is applied in the field of aluminum alloy polishing agents, can solve the problems of easy stickiness, leaving air marks, unsafe manual operation, etc., and achieve the effects of uniform polishing surface, reduced corrosion, and stable solution

Active Publication Date: 2012-11-28
广州波耳化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned electrolytic polishing agent has the following defects: 1. The corrosiveness is relatively strong, does not meet the environmental requirements, and manual operation is unsafe; 2. The solution is unstable and easily sticky; 3. The scope of application is small, only suitable for high-purity aluminum Alloys, such as 5052, 6063 and other low-purity aluminum alloys are not applicable, and there will be pitting; 4. Most of them are electrolytic polishing agents that will generate gas during electrolysis. When there are openings on the aluminum alloy workpiece, the electrolytic gas will The gas will overflow upward along the outer wall of the workpiece through the opening, and when the gas overflows, it will leave gas marks on the surface of the workpiece
The glossiness of the gas mark is far from the glossiness of the gas part on the surface of the workpiece, which makes the overall gloss of the workpiece uneven

Method used

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  • Electrolytic polishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] At normal temperature and pressure, weigh the components specified in Table 1 and add them to water, and stir until the components are completely dissolved, so that the mass volume concentration of each component of the electrolytic polishing agent is shown in Table 1.

[0017] In this example, Al 3+ It is obtained by dissolving aluminum hydroxide, and the coupling agent is titanate and phosphate.

[0018] Pour the prepared electropolishing agent into the electrolytic tank and heat it so that the temperature of the liquid in the electrolytic tank is 80°C. The clamped aluminum alloy workpiece is immersed in the electrolytic tank as an anode, and the clamped lead is immersed in the electrolytic tank as a cathode. Turn on the power supply (voltage: 25 volts, current density: 0.20A / dm 2 ), continue to power on for 350 seconds.

[0019] The electropolished aluminum workpiece was taken out of the electrolytic cell, and whether there were gas marks and pitting above the ope...

Embodiment 2

[0021] The method of Example 1 was repeated for each component specified in Table 1, and the test results are listed in Table 1. In this example, Al 3+ It is obtained by dissolving aluminum sulfate in water, and the coupling agent is titanate.

Embodiment 3

[0023] The method of Example 1 was repeated for each component specified in Table 1, and the test results are listed in Table 1. In this example, Al 3+ It is obtained by dissolving aluminum phosphate in water, and the coupling agent is titanate.

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Abstract

The invention discloses an electrolytic polishing agent which comprises the following aqueous solutions according to massic volume concentration: 890-1280g / L of phosphoric acid, 168-340g / L of sulfuric acid, 20-50g / L of AL<3 plus> and 1-5g / L of a coupling agent. The electrolytic polishing agent is used for regulating the ratio of phosphoric acid to sulfuric acid, and the corrosivity of the polishing agent is also effectively reduced through adding aluminum stearate, so the quality of the electrolyzed workpiece is enabled not to be influenced. The viscosity of the electrolytic polishing agent is increased by adding the coupling agent, the gas flow which is released during the electrolytic process can be changed, and is enabled not to leave gas marks on the workpiece which is electrically polished, so a polished surface can be uniform and complete, and has no defects.

Description

technical field [0001] The invention relates to an aluminum alloy polishing agent, in particular to an aluminum alloy electrolytic polishing agent. Background technique [0002] It is very difficult to obtain a very high natural metallic luster for aluminum alloys, so surface polishing is required. Electrolytic polishing is a commonly used surface treatment method, and commonly used electrolytic polishing agents are: potassium cyanide solution, phosphoric acid-sulfuric acid solution. [0003] The above-mentioned electrolytic polishing agent has the following defects: 1. The corrosiveness is relatively strong, does not meet the environmental requirements, and manual operation is unsafe; 2. The solution is unstable and easily sticky; 3. The scope of application is small, only suitable for high-purity aluminum Alloys, such as 5052, 6063 and other low-purity aluminum alloys are not applicable, and there will be pitting; 4. Most of them are electrolytic polishing agents that wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F3/20
Inventor 朱沛壬
Owner 广州波耳化工科技有限公司
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