New products, product adaptations and variations, new suppliers or new supplier products - the reasons for optimising selective soldering processes can be many and varied, such as when a new supplier for printed circuit boards has been selected after several years. Based on current price developments, this has been necessary for many electronics manufacturers in recent years. However, after the change of supplier, the quality of the end product is often no longer right, which in most cases is due to changes in product properties and dimensions. In these cases, our process specialists adapt the parameters to the new production conditions. In some cases, this also applies to systems that do not originate from our company.
Some of these process optimisations are very complex, such as in a production process in which a Hall sensor was to be soldered onto a circuit board. In addition to the different assembly variants, the different lengths of the circuit boards were also a challenge. Furthermore, the unassembled PCBs were sourced from different suppliers. As a result, each circuit board suddenly had a different quality, which is why the soldering parameters had to be adjusted in each case. The process expert also had to find this out as a first step. After all, the origin of the quality problems was initially unclear.
As equally good soldering results were to be achieved for all assemblies, new soldering parameters had to be determined for the different qualities of the boards provided. This made it necessary to write and implement new soldering programmes. As the errors occurred as a result of different variants and qualities, a great deal of experience and expertise in soldering process technology was required here. The error rate was reduced from an average of 9% to 0-0.7%, so that the boards originally used can still be soldered today without any problems and without having to adjust the parameters.
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