Soldering with solder wire always requires two consecutive processes: the feeding of the solder wire and the melting due to the heat input. It is not possible to carry out both processes at the same time. After all, the tip of the solder wire must first be positioned in order to achieve an exact soldering result. This can be disadvantageous, especially with high production volumes.
Because positioning and subsequent melting require additional production time, there is a potential saving of 0.4-0.9 seconds here. For example, the classic laser soldering process requires 0.3 seconds each for feeding and retracting the wire. If these partial steps are avoided, 0.6 seconds can be saved.
This is made possible by the SRS soldering. Here, pre-assembled solder rings are placed on and around THT pins, which are then melted using laser, piston or induction soldering processes, as well as IR emitters or hot air. As the placement of the solder rings is decoupled from the actual soldering process, both individual steps can be carried out at the same time. This decoupling is a factor that should not be underestimated when it comes to optimising cycle times, especially for high production volumes. Although it often only saves a few milliseconds, with very large quantities this adds up to a considerable time saving in the long term. It is also possible to precisely measure the amount of solder, which is why the process is highly accurate and extremely sustainable. At the same time, the overall process with solder wire is in no way inferior to conventional soldering in terms of reproducibility, accuracy and process reliability.