The application and development trend of shaft forgings in the aviation field refers to the iron-based alloy parts with special shape and high durability requirements used in aero engines, turbines, retarders and other equipment. These forgings are usually made of high-strength materials (such as nickel-based and titan-based alloys) by forging process, with excellent fatigue resistance, high temperature resistance and high strength characteristics, which can meet the harsh requirements of aircraft parts. In the field of aviation, the application of shaft forgings is mainly concentrated in the following aspects: 1. Engine bearings: All kinds of bearings in aircraft engines, such as main bearings, auxiliary bearings, etc., are usually made of shaft forgings. These bearings carry the weight of the engine rotor and withstand the tremendous pressure and friction heat of high-speed rotation. Therefore, the shaft forgings need to have good fatigue resistance and high temperature resistance to ensure the reliable operation of the engine. 2. Turbine blade: The turbine blade of an aeroengine is one of the key components made of shaft forgings. Turbine blades not only need to withstand the impact of high temperature and high pressure airflow and the role of centrifugal force, but also need to have good aerodynamic performance and corrosion resistance. Through reasonable material selection and manufacturing process, shaft forgings can meet these requirements and ensure the reliability and life of turbine blades. 3. Reducer parts: The reducer of the aircraft engine includes gear, rack and other parts, which are usually manufactured by shaft forging. Because the reducer of the aeroengine needs to withstand the huge torque and vibration load when rotating at high speed, the shaft forging needs to have high strength and anti-fatigue performance to maintain the normal operation of the reducer. The development trend of shaft forgings in the aviation field mainly includes the following aspects: 1. Improvement of material performance: With the progress of science and technology, the requirements for shaft forging materials in the aviation field are getting higher and higher. Future development trends will focus on the development of new alloy materials to improve their thermal stability, mechanical properties and corrosion resistance to meet the more demanding aviation environment requirements. 2. Innovation of manufacturing process: Manufacturing process is one of the key factors in the performance and quality of shaft forgings. The future development trend will be committed to the optimization and automation of forging process, improve production efficiency and the consistency of parts. At the same time, it will also achieve the manufacturing of more complex shapes of shaft forgings through advanced forming technology, such as multi-directional forging, powder metallurgy, etc. 3. Application of digital technology: The continuous development of digital technology will bring great progress to the design, simulation and manufacturing of shaft forgings. Through the use of virtual prototyping and digital twin technology, better optimization and prediction can be achieved in the product design and manufacturing stage to improve the performance and quality of shaft forgings. In short, the application and development trend of shaft forgings in the aviation field is to meet the higher requirements of performance, reliability and life in the aviation environment on the basis of continuous improvement of material properties, innovative manufacturing processes and the application of digital technology.
