Posted by: Zhouhanping2021-10-25Comments Off on Aluminum Anodizing Sealing Process
Aluminum Anodizing Sealing Process
Table of Contents
The aluminum oxide film is a porous film. Regardless of whether it is colored or not, it must be sealed before being put into use, so as to improve its corrosion resistance and weather resistance.
Aluminum Anodizing Sealing Process
There are three types of treatment methods, namely high temperature hydration reaction sealing, inorganic salt sealing and organic sealing.
(1) High temperature water seal
This method uses the hydration reaction of aluminum oxide film and water to change the amorphous film into a hydrated crystalline film:
The hydration reaction can be performed at normal temperature and high temperature, but at high temperature, especially at the boiling point, the resulting hydrated crystalline film is a very stable and irreversible crystalline film. Therefore, the most commonly used aluminum oxide film sealing treatment is boiling water. Process or steam process.
(2) Sealed by inorganic salt
The inorganic salt method can improve the fastness of organic coloring dyes, so it is commonly used in chemical coloring methods.
1. Acetate method
2. Silicate method
(3) Organic closed method
This is to immerse the aluminum oxide film by oil immersion, varnishing, or painting, etc., because the cost is higher and the process is increased, it is not widely used. Most of the two methods are used, and the first high temperature Hydration is mainstream.
Reprint Statement: If there are no special instructions, all articles on this site are original. Please indicate the source for reprinting:https://www.cncmachiningptj.com/，thanks！
PTJ® provides a full range of Custom Precision cnc machining china services.ISO 9001:2015 &AS-9100 certified. 3, 4 and 5-axis rapid precision CNC machining services including milling, turning to customer specifications,Capable of metal & plastic machined parts with +/-0.005 mm tolerance.Secondary services include CNC and conventional grinding, drilling,die casting,sheet metal and stamping.Providing prototypes, full production runs, technical support and full inspection.Serves the automotive, aerospace, mold&fixture,led lighting,medical,bicycle, and consumer electronics industries. On-time delivery.Tell us a little about your project’s budget and expected delivery time. We will strategize with you to provide the most cost-effective services to help you reach your target,Welcome to Contact us ( [email protected] ) directly for your new project.
2022-06-25Sponsored ContentComments Off on Laser additive manufacturing can improve the production process of 3D printed turbine blades
According to news on April 29, a team of German scientists used the FRM II neutron source to successfully analyze the residual stress of 3D printed nickel-chromium alloy specimens. In the future, it i...
2021-12-27Sponsored ContentComments Off on Why do some alloys become stronger at room temperature?
An alloy is usually a metal to which at least one other element has been added. Physicist Adrian Lervik said that we already know that aluminum alloys can become stronger when stored at room temperatu...
2021-12-27Sponsored ContentComments Off on The current price of PVC reaches a 10-year high
After the Spring Festival this year, the prices of chemical products collectively went up, but the trend began to diverge in mid-to-late March. Polyolefins entered the adjustment stage, but PVC still ...
2021-12-26Sponsored ContentComments Off on A new self-adjusting process based on 3D printing
Researchers at the University of Freiburg and Stuttgart have developed a new process that uses a standard 3D printer to produce a mobile, self-adjusting material system. These systems can undergo comp...
2021-12-26Sponsored ContentComments Off on What are the latest technologies for laser welding of aluminum alloys?
High-strength aluminum alloy has high specific strength, specific rigidity, good corrosion resistance, processing performance and mechanical properties. It has become an indispensable metal material f...
2021-12-25Sponsored ContentComments Off on With the advent of the new energy era, the demand for these three metals will double by 2040
A recent report by Wood Mackenzie shows that solar power will drive demand for aluminum, copper and zinc; by 2040, the industry’s demand for these three metals will double. Analysts predict that the s...
2021-12-25Sponsored ContentComments Off on Mathematical model of thermoplastic composites
Researchers at the Skoltech Design, Manufacturing and Materials Center and their colleagues developed and experimentally verified a chaotically reinforced thermoplastic composite model of short glass ...
The University of Aveiro and the Institute of Materials Aveiro have developed the combination of bamboo fiber and ABS. Using a two-step reaction process, the team has been able to create a brand-new b...