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Micro-arc oxidation technology applied to vibrating membranes of metal trumpets

A technology of micro-arc oxidation and horn, which is applied in anodic oxidation and other directions, can solve the problems of unsatisfactory horn performance, complicated treatment process, and large environmental pollution, and achieve the effects of low cost, simple process flow, and convenient operation and control

Inactive Publication Date: 2015-04-29
DONGGUAN PINPAI IND INVESTMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this treatment method is that it leads to unsatisfactory performance in all aspects of the speaker and serious environmental pollution, while the traditional micro-arc oxidation technology used in other industries is too expensive and the treatment process is too complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, the micro-arc oxidation technology applied to the metal horn diaphragm, before the micro-arc oxidation treatment, the aluminum-based workpiece as the metal horn diaphragm is first chemically degreased, and then cleaned, the micro-arc oxidation process According to the following process steps,

[0018] 1) Place the aluminum-based workpiece and cathode material in the prepared electrolyte, then rapidly increase the voltage to 300V and keep it for 5-10 seconds;

[0019] 2) Raise the anodizing voltage to 450V and electrolyze for 5 minutes;

[0020] 3) Place the aluminum-based workpiece in 250g / L K2O nSiO2 (potassium water glass) aqueous solution and oxidize it with an anodic oxidation current of 1A / dm2 for 5 minutes; the temperature of the solution is controlled at 20-50°C;

[0021] 4) Wash the aluminum-based workpiece after the third step of micro-arc oxidation, and then place it in a 70g / L Na3P2O7 aqueous solution and oxidize it with an anodic current of 1A...

Embodiment 2

[0027] Embodiment 2, the micro-arc oxidation technology applied to the metal horn diaphragm, before the micro-arc oxidation treatment, the aluminum-based workpiece as the metal horn diaphragm is first chemically degreased, and then cleaned, the micro-arc oxidation process According to the following process steps,

[0028] 1) Place the aluminum-based workpiece and cathode material in the prepared electrolyte, then rapidly increase the voltage to 300V and keep it for 5-10 seconds;

[0029] 2), raise the anodizing voltage to 450V, electrolyze for 8 minutes;

[0030] 3) Place the aluminum-based workpiece in 250g / L K2O nSiO2 (potassium water glass) aqueous solution and oxidize it with an anodic oxidation current of 1A / dm2 for 5 minutes; the temperature of the solution is controlled at 20-50°C;

[0031] 4) Wash the aluminum-based workpiece after the third step of micro-arc oxidation, and then place it in a 70g / L Na3P2O7 aqueous solution and oxidize it with an anodic current of 1A / d...

Embodiment 3

[0037] Embodiment 3, the micro-arc oxidation technology applied to the metal horn diaphragm, before the micro-arc oxidation treatment, the aluminum-based workpiece as the metal horn diaphragm is first chemically degreased, and then cleaned, the micro-arc oxidation process According to the following process steps,

[0038] 1) Place the aluminum-based workpiece and cathode material in the prepared electrolyte, then rapidly increase the voltage to 300V and keep it for 5-10 seconds;

[0039] 2) Raise the anodic oxidation voltage to 450V and electrolyze for 10 minutes;

[0040] 3) Place the aluminum-based workpiece in 250g / L K2O nSiO2 (potassium water glass) aqueous solution and oxidize it with an anodic oxidation current of 1A / dm2 for 5 minutes; the temperature of the solution is controlled at 20-50°C;

[0041] 4), wash the aluminum-based workpiece after the third step of micro-arc oxidation, and then place it in a 70g / L Na3P2O7 (tetrasodium pyrophosphate) aqueous solution and ox...

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PUM

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Abstract

The invention discloses a micro-arc oxidation technology applied to vibrating membranes of metal trumpets. The micro-arc oxidation technology comprises the following technology steps: placing an aluminum workpiece and an anode material in a prepared electrolyte, enabling the voltage to rapidly raise to 300V, and keeping the voltage of 300V for 5-10 seconds; enabling the anodic oxidation voltage to raise to 450V, and performing electrolyzation for 5-10 minutes; placing the aluminum workpiece in a K2OnSiO2 water solution of which the concentration is 250 g / L, and oxidizing the aluminum workpiece with the anodic oxidation current being1A / dm2 for 5 minutes; then, placing the oxidized aluminum workpiece in a Na3P2O7 water solution of which the concentration is 70g / L, and oxidizing the aluminum workpiece with an anodic current being 1A / dm2 for 15 minutes. After the micro-arc oxidation technology disclosed by the invention is adopted to perform micro-arc oxidation on the vibrating membrane of a metal trumpet, a ceramic membrane of which the property is similar to that of sintered carbides can be formed on the surface of the vibrating membrane, so that the surface of the vibrating membrane has the properties of high hardness, high-temperature resistance, corrosion resistance, good insulation, wear resistance and the like; the micro-arc oxidation technology disclosed by the invention has the advantages of simple process, convenience in operation and control, low cost, and the like.

Description

technical field [0001] The invention relates to the technical field of electroplating and electrolysis technology, in particular to a micro-arc oxidation technology. Background technique [0002] Micro-arc anodizing, also known as micro-plasma oxidation or anodic spark deposition, is a development of anodizing technology that uses a higher voltage than ordinary anodizing. Micro-arc anodic oxidation breaks through the limitations of traditional anodic oxidation. Al, Ti, Ta and other metals or their alloys are placed in the electrolyte, and electrochemical methods are used to generate spark discharge spots in the micropores on the surface of the material. Under the joint action of bulk chemistry and electrochemistry, an anodic oxidation method to form a ceramic film layer. During the discharge process, there are about 105 sparks per square centimeter of the surface of the aluminum anode, and the instantaneous temperature can reach above 8000K during discharge, forming a ceram...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/06
CPCC25D11/06
Inventor 吴杰毅
Owner DONGGUAN PINPAI IND INVESTMENT
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