Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Micro-arc oxidation method of car part aluminum material

A technology of micro-arc oxidation and auto parts, applied in the direction of anodic oxidation, electrolytic coating, surface reaction electrolytic coating, etc., can solve the problems of large sewage discharge, sewage discharge, power consumption, etc., and achieve pollution-free and improved electrical insulation performance Durability, simple composition effect

Inactive Publication Date: 2014-03-19
重庆普穗汽车零部件有限公司
View PDF6 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The commonly used methods of aluminum alloy surface treatment are chemical oxidation and anodic oxidation, but these treatment methods have a large amount of sewage discharge in the production process
Especially for anodic oxidation, repeated chemical cleaning, pickling, and alkali cleaning are required, which not only consumes a large amount of sewage, but also consumes water and electricity.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Micro-arc oxidation method of car part aluminum material

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028] Place the magnesium-aluminum alloy in the electrolytic cell, inject 11g / L of silicate, 4.6g / L of boric acid, 0.8g / L of potassium hydroxide, 21g / L of hydrogen peroxide, 0.1g / L of citric acid, and silicon carbide into the electrolytic cell 0.1g / L, the remaining part is an electrolyte solution of water, the pH value of the electrolyte solution is guaranteed to be 9, the aluminum-magnesium alloy is used as the anode, the steel plate is used as the cathode, the pulse power supply is a DC power supply, the current density is 5A / dm, and the current frequency 700HZ, increase the voltage from 0 to 200V, keep the heating temperature at 25°C, and the time of micro-arc oxidation is 40min. After a thin layer of ceramic film is formed on the surface of the magnesium-aluminum alloy, rinse it with distilled water or tap water for 1 minute, and polish the ceramic layer on the surface of the aluminum alloy with abrasive paper.

example 2

[0030] Place the magnesium-aluminum alloy in the electrolytic cell, inject 11g / L of silicate, 4.6g / L of boric acid, 0.8g / L of potassium hydroxide, 21g / L of hydrogen peroxide, 0.25g / L of citric acid, and silicon carbide into the electrolytic cell 0.25g / L, the remaining part is an electrolyte solution of water, ensure that the pH value of the electrolyte solution is 11, the aluminum-magnesium alloy is used as the anode, the steel plate is used as the cathode, the pulse power supply is a DC power supply, the current density is 10A / dm, and the current frequency 800HZ, increase the voltage from 0 to 300V, keep the heating temperature at 35°C, and the time of micro-arc oxidation is 45min. After a thin layer of ceramic film is formed on the surface of the magnesium-aluminum alloy, rinse it with distilled water or tap water for 2 minutes, and polish the ceramic layer on the aluminum alloy surface with water abrasive paper.

example 3

[0032] Place the magnesium-aluminum alloy in the electrolytic cell, inject silicate 11g / L, boric acid 4.6g / L, potassium hydroxide 0.8g / L, hydrogen peroxide 21g / L, citric acid 0.5g / L, silicon carbide 0.5 g / L, the remaining part is an electrolyte solution of water, ensure that the pH value of the electrolyte solution is 13, the aluminum-magnesium alloy is used as the anode, the steel plate is used as the cathode, the pulse power supply is a DC power supply, the current density is 15A / dm, and the current frequency is 900HZ , the voltage range is 350V, the heating temperature is kept at 45°C, and the time of micro-arc oxidation is 50min. After a thin layer of ceramic film is formed on the surface of the magnesium-aluminum alloy, rinse it with distilled water or tap water for 3 minutes, and polish the ceramic layer on the surface of the aluminum alloy with sandpaper.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a micro-arc oxidation method, and particularly relates to a micro-arc oxidation method of a car part aluminum material, the micro-arc oxidation method of the car part aluminum material comprises the following steps: taking the car part aluminum material according to the needs, putting the car part aluminum material into an electrolyzer; using an electrolytic process, putting an electrolyte into the electrolyzer, opening a pulsed power supply to electrolyze the electrolyte to obtain an aluminum material ceramic membrane; washing the ceramic membrane generated on the surface of the electrolyzed aluminum material with distilled water or tap water for 1 to 3 minutes, and using water sand paper for polishing smoothly a ceramic layer of the aluminum material. The provided micro-arc oxidation ceramic membrane of the car part aluminum material is firmly combined with a substrate, is compact in structure, the electrolyte composition of the micro-arc oxidation method is simple, the micro-arc oxidation method is easy to operate and control, the produced micro-arc oxidation ceramic membrane has good wear resistance, corrosion resistance, high temperature impact resistance and electrical insulation property, and the process has no pollution to the environment, so that the durability of the car part aluminum material is greatly improved.

Description

technical field [0001] The invention relates to a method for micro-arc oxidation, specifically, a method for micro-arc oxidation of aluminum materials for auto parts. Background technique [0002] Micro arc oxidation technology (Micro.arc Oxidization) is a kind of discharge through micro plasma on the surface of light alloy. A new technology for in-situ growth of oxide ceramic films through complex electrochemical, plasma chemical and thermochemical processes. It can improve the surface quality of aluminum and aluminum alloy products in automobile air-conditioning accessories, so that the products have a bright surface. High wear resistance, corrosion resistance, long service life and other characteristics, lay the foundation for achieving environmental protection, energy saving goals, and updating automotive air conditioning systems. [0003] The commonly used methods of aluminum alloy surface treatment are chemical oxidation and anodic oxidation, but these treatment meth...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/08C25D11/18
Inventor 李春清韦树宝
Owner 重庆普穗汽车零部件有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com