classification of brazing

Soldering iron brazing is used for soft soldering of small simple or thin parts. Wave soldering is used for the assembly and soldering of large quantities of printed circuit boards and electronic components. When welding, the molten solder at about 250°C passes through the narrow seam to form a wave crest under the pressure of the pump, and the workpiece is welded through the wave crest. This method has high productivity and can realize automated production on the assembly line. Flame brazing uses a flame of combustible gas mixed with oxygen or compressed air as a heat source for welding. The flame brazing equipment is simple and easy to operate. According to the shape of the workpiece, multiple flames can be heated and welded at the same time. This method is suitable for welding small and medium parts such as bicycle racks and aluminum kettle spouts. Dip brazing involves immersing a part or whole of the workpiece in a solder bath covered with flux or a salt bath with only molten salt for heating and welding. This method heats evenly, quickly, and has relatively accurate temperature control, which is suitable for mass production and welding of large components. The salt in the salt bath is mostly composed of flux. A large amount of flux often remains on the workpiece after welding, and the cleaning workload is large. Induction brazing is a welding method that uses high frequency, intermediate frequency or power frequency induction current as the heat source.