Method of making a flux, a brazing wire, and a brazing paste

摘要

A method of making a brazing flux compound including the steps of dispensing a desired amount of each of a plurality of ingredients. Adding potassium bifluoride to a bowl and adding boric acid on top of the potassium bifluoride. Mixing the boric acid and potassium bifluoride to form a substantially smooth wet first paste. Adding potassium tetraborate to the first paste and mixing the potassium tetraborate with the first paste to form a substantially creamy second paste. Adding potassium fluoroborate to the second paste and mixing the potassium fluoroborate with the second paste to form a third paste. Adding potassium carbonate to the third paste and mixing until the potassium carbonate is completely dissolved thus forming a fourth paste. Heating the fourth paste for a predetermined time at a predetermined temperature such that the said fourth paste is substantially dried into a substantially solid flux and then reducing the substantially solid flux to a powder flux.