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Laser soldering machine and manual soldering iron soldering difference

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Update time : 2022-12-14 11:22:21
The process of laser soldering machine and manual soldering iron soldering is divided into three basic steps: preheating, heating for providing tin wire and heating for providing solder after forming. Although the basic process of manual iron soldering and laser soldering is the same, the method of providing heating wire is different. Here's a look at the difference:
Manual soldering iron soldering process.
The soldering iron first preheats the iron, and the iron is heated to about 350℃. When the iron is preheated, the tin wire at the joint is heated to the melting temperature (heat transfer), and then it is sent to the solder wire that needs to be welded, to provide welding. After the solder wire is sent, the solder wire is melted, so that the solder wire is melted and formed. The operation is over.
Laser soldering machine operation process
First, the welding part is irradiated by laser, so that the irradiated part begins to heat up. When the irradiated site is heated enough to melt the solder wire, the required solder wire is fed to provide solder. Melt and form. Complete the entire welding process.
We see that soldering and heating methods are different, but they often complement each other at work. Because the artificial soldering iron is heat transfer through the soldering iron, laser soldering is to heat the irradiation part. So when the artificial soldering iron soldering, if the temperature of the iron head is not enough, you can use the laser to make the temperature rise. Of course, because continuous irradiation may make the temperature of the iron head too high, so pay attention to the adjustment of irradiation intensity and time.
Temperature is critical when welding. The composition state of the solder changes due to rising or falling temperature conditions. If the temperature is low, the welding is not complete, and the solder wire will not melt; If the temperature is too high, the welding may overheat and burn the machine. Therefore, it is difficult to achieve the strength and reliability of welding without proper temperature conditions. Moreover, when the temperature is not appropriate, the flux will also change the direction of flow because of the temperature. When heating at the appropriate temperature, the flux will flow to the welding part first, and remove the oxide and dirt around, so that the solder can better join. If too much heat is applied, the solder will stop the flux flowing in before it. In addition, excessive heating will damage the substrate, cause internal cracks in the substrate and other problems that can not be judged by the naked eye.
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