Flux for brazing aluminum members

摘要

A flux for brazing aluminum members comprising potassium tetrafluoroaluminate, potassium pentafluoroaluminate and oxyfluoroaluminum, accomplishing the brazing of aluminum members at temperatures 5 DEG C. to 20 DEG C. lower than the temperature of conventional brazing that uses fluoride fluxes. Thus, heating energy required for the brazing can thus be saved, and conventional brazing equipment can be used as it is, in principle, without any changes; and since no expensive elements are used in the fluxes, the cost of brazing aluminum members can be reduced.