First of all, we need to understand the working principle of laser
solder ball spray welding. The solder balls of the laser spray tin soldering welding system are transported from the solder ball box to the nozzle. After being heated and melted by the laser, they are sprayed out from the special nozzle and directly cover the pad without additional help. Flux, no other tools. Solder ball spray welding is adopted, and the welding precision is high, and there is a requirement for temperature or the soft board is connected to the welding area. During the whole process, the solder joints are not in contact with the welding body, which solves the electrostatic threat caused by contact during the welding process.
The laser spray tin welding system has the following characteristics:
1. Laser processing has high precision, small spot, program control of processing time, and higher precision than traditional process methods. It is suitable for soldering of tiny precision parts, and places where soldering workpieces are sensitive to temperature.
2. Non-contact processing, no static electricity caused by welding, and can be processed on parts that are difficult to weld in conventional methods.
3. The thin laser beam replaces the tip of the soldering iron, and it is also convenient to process when there are other interference objects on the surface of the workpiece.
4. Local heating, small heat-affected zone; no electrostatic threat.
5. Laser is a clean processing method, easy to maintain and easy to operate. Good stability in repeated operations.
6. Six-axis working platform, equipped with synchronous CCD positioning and monitoring system, automatic clamping, automatic judgment of whether there is a workpiece, can guarantee welding accuracy and yield rate.
7. The laser spray tin welding system does not need flux and other tools, which ensures the cleanliness of processing.
8. The heating speed is fast and the positioning is precise, which can be completed within 0.2 seconds.
9. The diameter of tin balls can be as small as 50μm, which is suitable for high-precision soldering.
10. The yield rate of solder is higher than that of ordinary automatic soldering machines.
11. With visual positioning system suitable for assembly line production.
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