There are a variety of surface treatment methods for aviation forgings, and the following are several commonly used methods: 1. pickling: By soaking the forgings in acid solution, remove the surface oxidation layer, rust, pollutants, etc., to achieve a clean and bright effect. Common pickling solutions include acid sulfuric acid, dilute hydrochloric acid or concentrated hydrofluoric acid solutions. 2. chemical plating: The use of chemical reactions to form a layer of metal or alloy plating on the surface of the forging, which can increase the surface’s corrosion resistance, wear resistance and beauty. Common electroless plating includes chromium plating, nickel plating, silver plating and so on. 3. electroplating: Through the electrolytic process, a layer of metal or alloy coating is deposited on the surface of the forging to improve surface performance and appearance. Common electroplating methods include chromium plating, nickel plating, silver plating, etc. 4. anodizing: A layer of oxide film is formed through anodizing on the surface of the forging to improve the corrosion resistance and hardness of the forging. Common anodizing materials are aluminum alloys. 5. spraying: spraying paint, pigment, etc. on forging surface evenly with spray gun to enhance surface protection and decorative effect. Commonly used spraying materials include paint, rubber paint, ceramic paint and so on. 6. nitriding: under high temperature and nitrogen environment, the forging surface reacts with nitrogen to form a nitriding layer and improve the hardness and wear resistance of the forging. The above method is only a part of the surface treatment of aviation forgings, the specific choice of which method depends on the material of the forgings, the use of the environment and requirements and other factors to meet the performance and quality requirements.
