Wave soldering is a widely used process in electronics manufacturing that involves 5 key steps: 1) melting solder in a tank heated to the proper temperature, 2) cleaning components to remove oxides using fluxing, 3) placing the printed circuit board on the melted solder, 4) applying the molten solder to flow into the joints, and 5) final cleaning of any flux residues using deionized water and solvents.