aluminum alloy material on aviation aircraft

Do you know that the aluminum alloy material on aviation aircraft uses that kind of surface treatment method? I believe that friends who have flown on an airplane know that during the flight of the aircraft, due to the difference in air pressure inside and outside the cabin, the aircraft will be twisted and twisted by load, take-off and landing and hovering. The air pressure in the cabin is pressurized to bring the air pressure close to the ground, so the aircraft is repeatedly subjected to the load caused by twisting and twisting. Therefore, the parts (fuselage, main wing, tail) that emphasize fatigue strength should choose 2000 series and 7000 series aluminum alloys.

Next, our anodizing processing plant will tell you about some conventional surface treatment processes of aircraft parts, so that everyone can have a new understanding of aircraft.

1. Sulfuric acid anodizing or chromic acid anodizing of 2000 series and 7000 series aluminum alloys.

2. Chemical conversion treatment of 2000 series and 7000 series aluminum alloy coating materials, sulfuric acid anodic oxidation treatment is better.

3. Use sealants containing chromate inhibitors.

4. The material of the connecting parts should take into account galvanic corrosion.

5. Try to avoid the connection between aluminum alloy and carbon fiber reinforced composite materials.

6. The body should not only be inspected many times in a short period of time, but also required to carry out large-scale maintenance every 5~6 years.

7. For environmental protection, it is recommended to use Boeing's sulfuric acid anodizing containing boric acid or Airbus tartaric acid anodizing to replace chromic acid anodic oxidation.