In a nutshell: Halogen-free no-clean Flux means that in the whole welding process, the halogen-free no-clean Flux removes the oxide layer on the surface of the welding material through the action of its own active substances, and at the same time reduces the surface tension between the tin liquid and the material to be welded. Small, enhances the performance of tin liquid flow and wetting, and helps to complete the welding.

     From the perspective of the working principle of halogen-free no-clean Flux, the activating substance in halogen-free no-clean Flux cleans the oxides on the surface of the welding material, so that the solder alloy can be well combined with the material to be welded and form a solder joint. In this process , The main role is the activator and other substances in the halogen-free no-clean Flux. These substances can quickly remove the oxides of the pads and component pins, and sometimes protect the material to be welded from being oxidized before the welding is completed. .

     In addition, while removing the oxide film, the surfactant in the halogen-free no-clean Flux also starts to work, which can significantly reduce the surface tension of the liquid solder on the surface of the material to be soldered, and improve the fluidity and spreading ability of the liquid solder. Strengthen and ensure that the tin solder can penetrate into every tiny brazing gap; in the tin furnace welding process, when the body to be welded leaves the tin liquid surface at the moment, due to the wetting effect of halogen-free no-clean Flux, excess tin Solder will flow down the pins, thus avoiding undesired phenomena such as tipping and continuous soldering.