With the acceleration of industrialization, many areas will use circuit boards. When it comes to this, we must mention the solder circuit board. What are the solder circuit board techniques ? Today we will use the following content to understand the related introduction of soldered circuit board techniques .
Soldering Circuit Board Tips 1. Selective soldering processes include: flux spraying, circuit board preheating, dip soldering and drag soldering. Flux Coating Process In selective soldering, the flux coating process plays an important role. At the end of soldering heat and soldering, the flux should have sufficient activity to prevent bridging and prevent oxidation of the board. Flux Spraying The X/Y robot carries the circuit board above the flux nozzle and the flux sprays onto the pcb circuit board.
Soldering Circuit Board Tips 2. The microwave peak selection welding after the reflow process is the most important one. The most important thing is the precise spraying of the solder. The micro-hole spray type will not blur the area beyond the solder joint. The minimum solder spot pattern diameter for micro spot spraying is greater than 2 mm, so the position accuracy of the solder paste deposited on the circuit board is ±0.5 mm to ensure that the flux always covers the soldered area.
Soldering Circuit Board Tips 3. The process characteristics of selective soldering can be understood by comparison with wave soldering. The most obvious difference between the two is that the lower part of the board during wave soldering is completely immersed in liquid solder. In selective soldering, Only certain areas are in contact with solder waves. Because the circuit board itself is a poor heat transfer medium, it does not heat the solder joints that melt adjacent components and board areas during soldering.
The flux must also be pre-applied before welding. Compared to wave soldering, the flux is applied only to the area to be soldered in the lower part of the board, not to the entire pcb board. In addition, selective soldering is only suitable for the soldering of plug-in components. Selective soldering is a completely new method. It is thoroughly understood that selective soldering processes and equipment are necessary for successful soldering.
With regard to the soldering circuit board technique , I will introduce it to you. I hope to help you, and I would like to look forward to seeing more information on this site.
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