Sensors are high-precision testing instruments that have strict requirements in aerospace manufacturing, and products must undergo strict testing before they can be used. There are integrated circuits and sensitive components inside the sensor, which can be filled with inert gas or evacuated and isolated from the outside. It has pressure resistance and air tightness requirements, as well as welding process strength requirements and air leakage rate requirements. The welding process quality is required to be high, and in The welding process requires small deformation and no damage to internal components and microcircuit.
Then, traditional welding equipment such as tungsten arc welding, resistance welding, electron beam welding, plasma arc welding, etc. simply cannot meet this requirement. Taking common resistance welding as an example, it is mainly used to weld thin process metal parts. Two electrodes clamp the workpiece to be welded and melt the surface of the electrode contact through a large current. That is, the welding process is implemented through the resistance heating of the workpiece. The workpiece is easily deformed.
The laser welding machine does not require contact processing, and there is no tool loss or tool replacement. The moving speed of the laser beam is adjustable, the energy is adjustable, and it can also be welded in various forms; laser welding has a high degree of automation and can be controlled by a computer. The welding process is fast and efficient, and can easily weld any complex shape; Thermal effects The area is small, the material deformation is small, and no subsequent processing is required; the laser welding machine has high production efficiency, stable and reliable processing quality, and good economic and social benefits. Therefore, for precision electronic components such as sensors, using a laser welding machine for the welding process is the best choice.
