Aerospace Precision Machining

What is Aerospace:

Aviation refers to the navigation activities of manned or unmanned aircraft in the earth's atmosphere; aerospace refers to the navigation activities of manned or unmanned spacecraft outside the earth's atmosphere, also known as space flight or space navigation. In order to expand social production, human beings must open up new space for activities. From the land to the ocean, from the ocean to the atmosphere, and then to the outer space, this is a process in which human beings gradually expand the scope of their activities.

Aerospace is the product of human beings expanding the atmosphere and space. After more than a hundred years of rapid development, aerospace has become one of the most active and influential fields of science and technology in the 21st century. The major achievements in this field mark the latest development of human civilization and the advancement of a country's science and technology. level.

Aerospace Machine Manufacturing Features:

The weight limit and working environment of spacecraft put forward some special requirements for manufacturing technology: ① A large number of high-strength, high-modulus metal materials (titanium, molybdenum, niobium, tantalum, etc.) and various composite materials are used. The application of these materials is beneficial to reduce the structural weight, but the processing performance is poor, and new manufacturing techniques are required. ②Adopt high-precision parts and components manufacturing and testing technology. In order to achieve accurate orbiting, positioning, space docking and returning to the ground, many control functional parts of the spacecraft, sealed hatches and large-size thin-walled frames that serve as references must have high manufacturing precision. Spin-stabilized satellites must ensure that the angle between the geometric axis and the main axis of inertia is within a hundredth of a degree to reduce the precession and nutation of the satellite in space. ③ Various special surface coatings are used. The working environment of spacecraft is very harsh, so the outer surfaces of various structures must be covered with coatings with special properties, and can remain stable in the space flight environment. ④Adopt reliable connection technology and clean manufacturing environment. Artificial earth satellites need to work continuously for several years, and manned spacecraft need to ensure thesafetof astronauts. If the welding seams and welding spots of manned spacecraft fail during work or the pipelines are mixed with fine inclusions, it will lead to serious consequences.