Selective wave soldering is an efficient and precise soldering technology based on the fundamental principle of wave soldering, but it achieves selective heating and soldering of specific areas by controlling the shape and position of the solder wave. In selective wave soldering, soldering material is pre-coated with flux onto the workpiece, which is then placed over the solder wave. As the wave passes through, the flux melts and contacts the workpiece surface, forming solder joints. This soldering method allows precise control of the heating and cooling process in the soldering area, thereby achieving high-quality solder connections. Selective wave soldering equipment typically consists of a soldering head, wave generator, and control system. By controlling the movement of the soldering head and the shape of the wave, selective heating of the soldering area can be achieved. Selective wave soldering offers advantages such as fast soldering speed, high soldering quality, and low energy consumption, making it widely used in electronics, automotive, aerospace, and other industries.
The working principle of selective wave soldering is an improvement and optimization based on traditional wave soldering. In selective wave soldering, certain areas of the soldering workpiece are coated with a layer of non-melting masking agent, which prevents wetting of the solder wave and formation of solder joints. When the solder wave passes through the workpiece, only the areas not covered by the masking agent will form solder joints, thereby achieving selective control over the soldering positions.
The equipment structure and characteristics of selective wave soldering are also different from traditional wave soldering. Selective wave soldering equipment is typically equipped with a dual-liquid supply system, where one liquid is the masking agent used to coat the soldering positions, and the other liquid is the solder wave flux used to form solder joints. Additionally, selective wave soldering equipment is equipped with a precise control system that allows accurate control of the coating and soldering processes according to soldering requirements.
Selective wave soldering offers many advantages and application scenarios compared to traditional wave soldering. Firstly, it enables precise control over soldering positions, reducing the heat-affected zone during soldering, which is beneficial for protecting the surface quality and structural integrity of components. Secondly, selective wave soldering improves soldering efficiency, saves energy, and reduces material consumption, thus lowering production costs. Moreover, selective wave soldering is widely used in industries such as electronics, automotive, aerospace, especially for precision components with high soldering position requirements.