Microarc oxidation-based surface modifying method for air-conditioner parts of vehicle

A technology of micro-arc oxidation and automobile air conditioning, applied in the direction of anodic oxidation, etc., can solve the problems of large sewage discharge, sewage discharge, water consumption, etc., achieve high production efficiency, expand exports, and improve economic benefits

Inactive Publication Date: 2011-06-29
刘远彬
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  • Claims
  • Application Information

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Problems solved by technology

[0002] The surface modification methods of auto air-conditioning parts are commonly used chemical oxidation and anodic oxidation. Large amount of sewage discharge, water consumption and electricity consumption

Method used

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  • Microarc oxidation-based surface modifying method for air-conditioner parts of vehicle
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  • Microarc oxidation-based surface modifying method for air-conditioner parts of vehicle

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Embodiment Construction

[0020] With reference to accompanying drawing, further illustrate the present invention:

[0021] The surface modification method of the automobile air-conditioning accessories based on micro-arc oxidation, comprises the following steps:

[0022] 1. Remove the surface grease of the parts to be processed, and use a grinder to grind the surface of the parts to remove the burrs on the surface;

[0023] 2. Put the polished parts into the micro-arc oxidation tank, and form a dense micro-arc oxidation film on the surface of the parts through micro-arc oxidation; during micro-arc oxidation, the pulse frequency of the power supply is 600-800HZ, and the pulse duty The ratio is 20%, the number of positive pulses is 20, the number of negative pulses is 1, and the current density is 5-20dm 2 , the voltage is 0-350V, the electrolyte temperature is 15-45°C, and the micro-arc oxidation time is 5-45min; the electrolyte for micro-arc oxidation includes silicate 7-11g / L, boric acid 1.5-4.5g / L,...

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Abstract

The invention provides a microarc oxidation-based surface modifying method for air-conditioner parts of a vehicle. The method comprises the following steps: removing grease on the surface of a part to be processed; grinding the part surface by a grinding machine to remove burr on the surface of the part; placing the grinded part in a microarc oxidation tank, forming a compact microarc oxidation film layer on the part surface through microarc oxidation, wherein, during microarc oxidation, the impulse frequency of a power supply is between 600 and 800HZ, the pulse duty cycle is 20 percent, the positive pulse number is 20, the negative pulse number is 1, the current density is between 5 and 20dm<2>, the voltage is between 0 and 350V, the electrolyte temperature is between 15 and 45 DEG C, and the time of microarc oxidation is between 5 and 45 minutes; the electrolyte of microarc oxidation comprises 7 to 11g / L silicate, 1.5 to 4.5g / L boric acid, 0.5 to 1.2g / L potassium hydroxide and 2.1ml / L hydrogen peroxide. The microarc oxidation-based surface modifying method for the air-conditioner parts of the vehicle has the advantages of high production efficiency, and is water-saving, energy-saving, environment-friendly.

Description

technical field [0001] The invention relates to a method for surface modification of automobile air-conditioning accessories based on micro-arc oxidation. technical background [0002] The surface modification methods of auto air-conditioning parts are commonly used chemical oxidation and anodic oxidation. The discharge of sewage is large, and it also consumes water and electricity. Micro-arc oxidation is a new surface treatment technology developed on the basis of anodic oxidation. Contents of the invention [0003] In order to overcome the shortcomings of large sewage discharge, water consumption and power consumption in the prior art, the present invention provides a water-saving, energy-saving, environmentally friendly and high production efficiency method for surface modification of automobile air-conditioning parts based on micro-arc oxidation. [0004] The surface modification method of the automobile air-conditioning accessories based on micro-arc oxidation, comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/02
Inventor 刘远彬
Owner 刘远彬
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