Patent ID: 6395223
Filing Date: 2002-05-28
Classification: B23K

Abstract:
A method of making a brazing flux compound comprising the steps of:dispensing a desired amount of each of a plurality of ingredients; first adding potassium bifluoride; second adding boric acid on top of the potassium bifluoride; first mixing the boric acid and potassium bifluoride to form a substantially smooth wet first paste; third adding potassium tetraborate to the first paste; second mixing the potassium tetraborate with the first paste to form a second paste; fourth adding potassium fluoroborate to the second paste; third mixing potassium fluoroborate with the second paste to form a third paste; fifth adding potassium carbonate to the third paste; fourth mixing until 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 reducing the substantially solid flux to a powder.