Selective wave soldering is a specialized form of wave soldering that has emerged to meet the requirements of modern welding processes, particularly prevalent in PCBA manufacturing. It primarily consists of three components: fluxing unit, preheating unit, and soldering unit.
Components of Selective Wave Soldering Equipment:
- Fluxing System: The fluxing system sprays flux onto the PCB in varying quantities according to programmed parameters. This feature saves flux usage while preventing contamination of non-soldered areas.
- Preheating Module: The preheating module is designed to uniformly preheat the entire PCB to prevent thermal damage caused by uneven heating. Preheating also activates the flux.
- Soldering Module: The soldering module comprises a solder pot, mechanical pump, soldering nozzle(s), nitrogen protection device, and transmission mechanism. These components work together to form a stable dynamic solder wave, ensuring proper and accurate soldering.
Welding Methods of Selective Wave Soldering:
- Drag Soldering: Drag soldering is a processing method where soldering is sequentially completed using a single or dual nozzle according to pre-set routes. Welding positions and parameters can be accurately programmed.
- Dip Soldering: Dip soldering is a processing method where multiple points are soldered simultaneously.
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