Aircraft forging is an important component of aircraft structure, responsible for bearing various airborne loads and aerodynamic forces, so it has high strength and high reliability requirements. Surface plasma spraying technology is an effective surface treatment method, which can improve the fatigue life, corrosion resistance and lubrication of aircraft forgings, enhance their single use life and the reliability of the entire structure.
Taking the aircraft engine rotor shaft as an example, this part needs to undergo high-pressure plasma carburizing treatment. Using this surface treatment process can ensure the strength of the part and create a new compound film at the interface, which improves the fatigue resistance, lubrication, corrosion resistance and hardness of the metal. This surface treatment method can also improve the thermal performance of aircraft forgings, prevent oxidation, and precision machining of special shapes.
So how to conduct surface plasma spraying? Generally, the process flow includes three steps: pre-treatment, spraying treatment, and post-processing. In the pre-treatment step, whether it is cleaning, grinding, or pickling, it is crucial. Only when impurities, oxide scales and other substances are cleaned up around the surface, the spraying effect can be guaranteed. Then, in the spraying process, appropriate technical means are used to evenly spray the thin film material, forming a sealed surface film. Finally, in the post-processing step, technology such as high-temperature drying or metal coating is often used to further improve the adhesion, corrosion resistance, and heating performance of the coating.
In summary, surface plasma spraying technology, as an important surface treatment method, can not only improve the performance of aircraft forgings but also prolong their service life, playing a critical role in safeguarding aircraft structural safety.
