What is the process of manufacturing aircraft forgings? Please use practical production examples to illustrate and write an article, and translate it into English.
Aircraft forgings are one of the important components of aircraft structures. They need to undergo multiple manufacturing processes to ensure their quality and performance, and meet the requirements of flight safety. This article will take the manufacturing process of the leading edge flaps components in the Chinese C919 airliner as an example to detail the manufacturing process of aircraft forgings.
The first step is material preparation. The leading edge flaps component uses high-quality aluminum alloy forgings materials because aluminum alloy forgings materials have higher strength and hardness, and can adapt to high-load conditions.
The second step is forging technology. Aluminum alloy forgings are shaped through special forging dies. This process requires multiple stages such as forging pre-treatment, forging, and finishing. Among them, the forging pre-treatment stage requires cutting and deburring the original metal blanks, and aging treatment to improve the strength and hardness of the forgings. In the forging stage, the deformation of the aluminum alloy billet in the die is achieved by heating and cooling the mold, thus obtaining the required forging shape. The finishing stage refers to the surface of the forging being finished to the design requirements by a grinding machine or finishing die.
The third step is heat treatment technology, which usually includes two processes: solution treatment and aging. The solution treatment of aluminum alloy forgings can eliminate residual stress and uneven grain problems generated during the forging process, and improve the strength and plasticity of the forgings. The aging treatment is to heat treat the aluminum alloy forgings and keep them warm for a certain period of time to achieve the expected performance indicators.
The fourth step is mechanical processing technology. Aluminum alloy forgings need to be further processed to meet the standard of precision through drilling, milling, planing, and boring, etc. At the same time, quality control is also required during the processing process to ensure that the forgings meets the design requirements.
The fifth step is surface treatment technology. Through mechanical polishing and sandblasting and other surface treatment processes, the surface of the forgings is made smooth and more suitable for testing.
In summary, the manufacturing process of aircraft forgings requires multiple processes to work together to ensure stable performance and excellent quality. Only by strictly controlling quality in various links such as material selection, forging, heat treatment, mechanical processing, and surface treatment can high-quality aircraft forgings be produced.
