Views: 28 Author: Site Editor Publish Time: 08-25-2021 Origin: Site
The sensor is a high-precision detection instrument, which has applications in various measurement fields, especially in military, aerospace and other aspects that require very strict requirements. Some sensors require metal encapsulation due to the conditions of their application environment, and generally adopt welding sealing, which requires high welding quality, and requires small deformation during the welding process, and cannot damage the internal components and microcircuits. Therefore, the application advantage of laser welding machine in sensor is very obvious. Let's analyze the Leapion laser below.
As a detection tool, the sensor requires the detection of physical or chemical information of the research object, and its working process requires stability, reliability, and high accuracy. Therefore, the sensor has the following requirements:
Sensors generally work in a wide range of environments, from extreme cold to hot areas, many working in the open environment, can resist flying sand, stone, dust, moisture, high resistance to salt corrosion, acid corrosion, and anti-pollution gas interference The ability to adapt to high temperature, extreme cold, strong vibration, shock and normal work under other conditions. It should also have a strong anti-noise ability and a high signal-to-noise ratio.
The sensor is required to have good consistency, suitable for automated mass production, and has high requirements on processing equipment, so as to eliminate inconsistencies and errors caused by manual operation.
The sensor is a high-precision testing instrument, which has strict requirements in military, aviation, and aerospace applications. Products must undergo rigorous testing before they can be used. Whether a sensor has a higher technical added value is reflected in the technical content and processing technology it contains.
Some sensors require metal encapsulation due to the conditions of their application environment. They are generally sealed by welding, such as pressure sensors, force sensors, Hall sensors, photoelectric sensors, temperature sensors, etc. These sensors have sensitive components and integrated circuits inside, and are filled with inert gas. Or it can be vacuumed and isolated from the outside world, with pressure resistance and air tightness requirements.
There are also requirements for welding strength and air leakage rate, high requirements for welding quality, and small deformation during the welding process, and no damage to internal components and microcircuits.
1. The laser beam has a small laser focus spot and high power density, which can weld some alloy materials with high melting point and high strength;
2. Laser welding is non-contact processing, and there is no problem of tool loss and tool replacement. The energy of the laser beam is adjustable, the moving speed is adjustable, and various welding processes are possible;
3. The laser welding has a high degree of automation, which can be controlled by a computer, the welding speed is fast, the efficiency is high, and it can be easily welded to any complex shape;
4. Laser welding has a small heat-affected zone, small material deformation, and no need for subsequent processing;
5. The laser can weld the workpiece in the vacuum container and the workpiece in the internal position of the complex structure through the glass;
6. The laser beam is easy to guide and focus, and realize the change of various directions;
7. Compared with electron beam processing, laser welding does not require strict vacuum equipment system and is easy to operate;
8. Laser welding has high production efficiency, stable and reliable processing quality, and good economic and social benefits.
9. The laser welding machine has good program control: machine tool control and sensor system detect process parameters and ensure quality.
10. The laser welding machine is especially suitable for automation technology.
After laser welding, the surface of the sensor metal shell is smooth and defect-free, the weld strength is equivalent to that of the base material, and there is no damage to the photosensitive element inside the sensor during the welding process, and the appearance and sealing are excellent. For more professional questions about laser welding machines, welcome to consult Leapion Laser.
