Electronic connectors are a type of component that electronic engineering technicians often come into contact with. Its function is very simple: to be blocked or isolated between circuits, set up a communication bridge to allow current to flow, and achieve the predetermined function of the circuit. Connectors are an indispensable part of electronic devices. When observing the current path, one or more connectors will be found. The form and structure of connectors are constantly changing. There are different types of connectors, which have different application objects, frequencies, power, and application environments. For example, there are significant differences between connectors for stadium lighting, hard drive connectors, and connectors for igniting rockets. However, regardless of the type of connector used, it is necessary to ensure a smooth, continuous, and reliable flow of current.

Generally speaking, aviation plugs are not only connected to electrical currents. With the rapid development of optoelectronic technology, in fiber optic systems, the carriers of signal transmission are light, glass, and plastic, rather than wires in ordinary circuits. However, connectors are also used for optical signal paths and have the same function as circuit connectors. The aviation plug is not only a simple interface component in aerospace system engineering, but its reliability directly affects the success or failure of aerospace system engineering. In addition to advanced design technology, important factors that affect its process performance and usage performance should also be carefully selected when selecting materials.

What requirements should aviation plug materials meet?

The selected materials should have the advantage of light weight, as weight is of great significance in improving the technical performance indicators and economic benefits of space vehicles. In addition to being light in weight, it also has good corrosion resistance, so currently most aviation plugs used in aerospace system engineering are made of aluminum alloy shells. Due to the fact that aviation plugs are mainly used in aerospace environments and are susceptible to temperature and radiation, the selected materials should be resistant to temperature and radiation, and PVC plastic is generally not provided. In addition, considering the safety of spacecraft, the connectors selected should have the advantages of non-toxic and flame retardant. Some materials that can quickly self extinguish and produce a small amount of salt mist during combustion can also be selected. The selected connector shell material should ensure that the designed structural strength, forming process, and stiffness meet the requirements of the spatial system. For example, hard aluminum is selected for shell processing because it has good cutting performance; Die cast aluminum shell has good flowability and compactness; The cold extruded shell is made of forged aluminum with good cold deformation plasticity; The shell and contact parts of the glass sintered sealing joint should be made of low expansion alloy, as the expansion coefficient of these materials matches the number of the glass expansion system; Some elastic components such as claws, springs, short-circuit rings, and snap rings mainly serve as positioning, locking, shielding, and other functions. Therefore, the selected material should have reliable elastic function. In a medium environment, aviation plugs can be stored for up to 8 years. After a long period of storage, reliable performance has always been a concern for many users. In order to ensure its reliable performance, the selected metal shell shall have anti-corrosion and anti-aging functions. After long-term storage, multi molecular materials such as metal shells and insulators should undergo aging analysis and inspection before use.