Aircraft forgings are made of high-quality metal materials and advanced processing technology, with excellent properties such as high strength and rigidity, and play a critical role in aircraft operation. In order to ensure flight safety, aircraft forgings require high-precision machining to meet their strict geometric dimensions and surface quality requirements.
Taking the Chinese C919 large passenger plane as an example, the aluminum alloy forging parts in its seat support equipment require high-precision machining. In this case, material accuracy, process accuracy and equipment accuracy must be ensured throughout the entire manufacturing process.
Firstly, in the material selection process, high-quality aluminum alloy materials that have high strength and hardness are chosen, which can be used under high-load conditions while also suitable for high-precision machining. Then, in the pre-processing stage, the material needs to undergo heat treatment and surface polishing to ensure a smooth surface without defects with higher precision.
Subsequently, during high-precision machining, numerical control machine tools and high-precision tools are adopted to complete the machining task. Through the introduction of large-scale five-axis linkage numerical control machining equipment and high-precision tools, the company achieves high-precision machining of forgings. This equipment can make aluminum alloy forgings reach higher geometric dimension and surface quality accuracy, ensuring the accuracy of local part installation.
In addition, strict quality control is required at every production stage. For example, during machining, operators must maintain a stable operation method, correct feed speed and appropriate cutting parameters, ensuring that each forging meets the required high-precision machining accuracy and good surface quality.
In conclusion, aircraft forgings require high-precision machining to ensure their geometric dimensions and surface quality meet strict requirements, thereby ensuring flight safety. Only through high-quality materials, advanced equipment and refined processes and by strictly controlling quality at every production stage, can high-standard aircraft forgings be produced.
