Smt patch technology: cooling after wave soldering

- Sep 27, 2019-

Smt patch technology: cooling after wave soldering

Smt patch technology: A cooling station is usually added at the end of the wave soldering machine. In order to limit the tendency of copper-tin intermetallic compounds to form solder joints, another reason is to accelerate the cooling of the components and avoid plate displacement when the solder is not fully cured. Quickly cool the assembly to limit exposure of sensitive components to high temperatures. A cooling station is usually added to the end of the wave soldering machine. In order to limit the tendency of copper-tin intermetallic compounds to form solder joints, another reason is to accelerate the cooling of the components and avoid plate displacement when the solder is not fully cured. Quickly cool the assembly to limit exposure of sensitive components to high temperatures. However, the hazard of the thermal shock of the aggressive cooling system to components and solder joints should be considered. A well-controlled "soft and stable", forced gas cooling system should not damage most components. There are two reasons for using this system: the ability to quickly process the board without holding it by hand and ensuring that the temperature of the assembly is lower than the temperature of the cleaning solution. What is of concern is the latter reason, which may be responsible for the foaming of certain flux residues. Another phenomenon is that sometimes a reaction with some flux scum occurs, so that the residue "cannot be cleaned". No formula can meet these requirements in ensuring that the data set by the welding station meets all the machines, all designs, all materials used and the material conditions and requirements of the process. It is important to understand every step of the process.

The above is the industry consultation provided by smt patch processing factory Shenzhen Pengzexiang Technology Co., Ltd., I hope to help you! Please contact us if necessary: http://www.oem-pcb.com pcb@sunsoartech.com


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