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
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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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