Bronze brazing flux is a compound that is used to clean and protect metal surfaces during the brazing process. It helps to remove oxides and other impurities from the metal, and it also helps to prevent the formation of new oxides during the brazing process. This results in a stronger and more durable joint.

Bronze brazing flux is typically used in conjunction with bronze brazing rod or wire. The flux is applied to the metal surfaces to be joined, and then the brazing rod or wire is melted and flowed into the joint. The flux helps to ensure that the brazing filler metal flows smoothly and evenly into the joint, and it also helps to prevent the formation of voids or gaps in the joint.