Parts that are used in aircraft engines and power systems must work perfectly every time. They should not fail so manufacturers must focus on cutting and measuring metal parts and finishing them properly. A good finish can help parts last longer and cope with heat, pressure and corrosion.
What Is Surface Finishing?
Surface finishing improves the outer layer of a material and in aerospace, it can also improve strength and performance. There are many different aerospace surface treatments that are used depending on the part and what it needs to do. Safety standards are very strict across UK aviation and are overseen by the Civil Aviation Authority.
Plating
Plating covers a metal part with a thin layer of another metal, such as nickel, silver, copper, gold or zinc. This layer protects the part from corrosion and wear and it can also reduce friction and improve electrical conductivity. Plating is often used together with other finishes in aerospace surface treatments, like the examples seen here, //www.poeton.co.uk/about/industries/aerospace-defence/ to make parts even stronger.
Powder Coating
Powder coating is a dry finishing process. A fine powder is sprayed onto a metal surface using an electrical charge and the part is then heated so the powder melts and forms a smooth, protective coating. It gives good protection against corrosion, chemicals, UV light and high temperatures.
Hot Blackening
Hot blackening creates a dark protective layer on metal parts. The component is placed in a heated chemical solution and after that, oil or wax is applied to seal it and help prevent rust.
