A mobile phone chip usually refers to a chip used for the communication function of a mobile phone. The PCB board is the support of electronic components and the provider of electrical connections of electronic components. With the development of lightweight mobile phones, traditional welding is no longer suitable for the welding of internal parts of mobile phones. Since its development, laser welding has penetrated into various industries. With welding efficiency and quality, the laser soldering machine has high quality of welding products, long service life and production automation. It is used by many manufacturers.
So what is laser solder? Conventional SMT-Reflow uses hot air reflow to heat parts, solder paste, and PCBs so that the solder melts and then solidifies, thus connecting the parts and PCB pads. There are also handmade soldering irons, which are relatively simple and rough. The heated tip is first touched to the soldering position, and then the tin wire is sent manually. Unlike the first two methods, laser welding is a supplement and partial replacement for traditional welding methods. It uses an efficient and clean laser as a heat source without touching the product. Just the laser is irradiated to the welded part of the product, and the form of the welding material is different.
Characteristics of automatic laser soldering machine by force:
Constant temperature precision laser soldering machine is our company's standard welding equipment, which is mainly composed of automatic tin dispensing device, automatic wire feeding device, infrared real-time temperature feedback system, CCD coaxial positioning system, and semiconductor laser. The company's self-developed constant temperature laser soldering software can realize the layered processing of processing parameters at different solder joints and different heights, and the completion of the operation can be monitored in real time during the welding process. PID** temperature adjustment feedback system can control constant temperature welding and improve welding yield and precision.
1.PC control, visual operation. High-definition CCD camera, optional Mark+ DXFGEBER graphics or template matching mode, automatic positioning, meet the requirements of automatic or first-class processing of high-precision devices, and reduce manual intervention.
2.It has a temperature control model with core technology, and uses a high-precision infrared temperature detector for real-time temperature feedback and control.
3.Non-contact welding, no mechanical stress damage, fast heating degree, small thermal shadow area.
4.Laser, CCD, temperature measurement, and indicator light four-point coaxial, which solves the problem of multi-optical path overlap in the industry and reduces complex debugging.
5.The self-developed constant temperature laser soldering software realizes the call and processing of different parameters, which is convenient for customers to use.
6.The optical system, motion unit, and control system are fully modularized, which improves the stability and maintenance of the system.
When welding materials, the temperature of the solder joints is very important. The welding state will change due to the increase or decrease in temperature. If the temperature is too low, the welding will not crack completely, and the welding material will not melt or not melt completely; If the temperature is too high, the welding material may overheat and burn out the workpiece. As a result, it is difficult to achieve the strength and reliability of the weld when welding at inappropriate temperature conditions. When the temperature is not suitable, the flux also changes the direction of flow due to temperature. When soldered at the right temperature, the flux will first flow to the solder site and remove the surrounding oxides and dirt for a better solder connection. If it overheats, the solder will prevent the previous flow.
Laser welderIn the welding process, the laser output power is divided into three stages. First, the laser irradiates the welded part to heat up the welded part to a preset temperature, that is, preheating; The conveyed solder melts, i.e., the solder; In the third stage, after the solder melts, it needs to be held for a certain amount of time to help the solder form better. At this point, the entire welding process has been completed. The temperature settings for the three stages vary depending on the solder, workpiece material, and soldering requirements. In general, in order to find the most suitable welding parameters, it is necessary for a good technician to determine the approximate temperature range based on experience. Therefore, the initial sample testing of the laser solder is very important!