Abstract: A wave soldering apparatus includes a solder reservoir within which a pool of molten solder is held at a suitable temperature by heaters. Each heater has an electric heating element and a cover mounted to the solder reservoir to protect the heating element from the molten solder. A solder wave nozzle is submerged in the pool of molten solder and includes a nozzle housing within which a baffle is mounted, and a nozzle head mounted to the nozzle housing and having nozzle openings. An impeller pump includes an impeller housing communicated with the nozzle housing and an impeller connected to a motor. The impeller is driven to draw the molten solder into the impeller, pump the molten solder up through the nozzle housing and force the molten solder through the nozzle opening to form a solder wave through which a printed circuit board to be solder passes.

Abstract: A wave soldering apparatus includes a solder reservoir within which a pool of molten solder is held at a suitable temperature by heaters. Each heater has an electric heating element and a cover mounted to the solder reservoir to protect the heating element from the molten solder. A solder wave nozzle is submerged in the pool of molten solder and includes a nozzle housing within which a baffle is mounted, and a nozzle head mounted to the nozzle housing and having nozzle openings. An impeller pump includes an impeller housing communicated with the nozzle housing and an impeller connected to a motor. The impeller is driven to draw the molten solder into the impeller, pump the molten solder up through the nozzle housing and force the molten solder through the nozzle opening to form a solder wave through which a printed circuit board to be solder passes.

Abstract: A solder dross removal apparatus for keeping molten solder in a wave soldering machine substantially free of dross or tin and lead oxides which are formed on the surface of the molten solder where it is in contact with atmospheric air. The solder dross removal apparatus includes a container adapted to hold a pool of molten solder at a preset temperature and receive dross from the wave soldering machine. A refractory lid is detachably mounted on the open top of the container. An agitator is rotatably supported by the lid and located within the container to agitate the molten solder and the dross. The lid includes an opening through which a separating agent in powder form is introduced into the container to facilitate separation of oxides.

Abstract: A flow of waste fused solder, which has been ejected from ejection nozzles 2, 3 but has not been effectively used during a soldering process, is received in troughs 10 provided on either sides of each of the ejection nozzles 2, 3. The flow of waste fused solder, containing therein oxides, is directed through the troughs 10 into a filtration chamber 13 defined in a vessel body 1. The flow of fused solder is filtrated by means of a partition plate 12 as it flows from the filtration chamber 13 into a solder reservoir 14, so that the oxides in the fused solder are removed. The troughs 10 do not become clogged with the oxides in the fused solder, since the top each of the troughs is opened. Due to an appropriate configuration of the partition plate 12, depending upon difference in specific gravity between the fused solder and the oxides, it is possible to effectively remove oxides from the solder ejection vessel.