Fluxes for use in the treatment of light metals

Claim 1

AN INSPISSATED FLUX FOR USE IN THE TREATMENT OF MAGNESIUM AND MAGNESIUM BASE ALLOYS CONSISTING OF AT LEAST ONE HALIDE SELECTED FROM THE GROUP CONSISTING OF THE CHLORIDES AND FLUORIDES OF BARIUM AND STRONTIUM, IN TOTAL AMOUNT AT LEAST EQUIVALENT TO 20% BARIUM CHLORIDE RECKONING 1% BARIUM CHLORIDE EQUIVALENT TO 1.4% STRONTIUM CHLORIDE, 0.6% BARIUM FLUORIDE, OR 1.6% STRONTIUM FLUORIDE, AT LEAST ONE CHLORIDE SELECTED FROM THE GROUP CONSISTING OF THE CHLORIDES OF CALCIUM, MAGNESIUM, AND THE ALKALI METALS, SAID FLUX CONTAINING AT LEAST TWO OF THE AFOREMENTIONED CHLORIDES, SAID FLUX INCLUDING AT LEAST ONE INSPISSATING AGENT SELECTED FROM THE GROUP CONSISTING OF SUCH OXIDES AND FLUORIDES INCLUDING THE SAID BARIUM FLUORIDE AND STRONTIUM FLUORIDE AS ARE CHEMICALLY INERT TO MOLTEN MAGNESIUM, THE QUANTITY OF INSPISSATING AGENTS BEING BEWEEN 13% AND 43%, AND SUCH AS TO ENABLE THE FLUX TO PROVIDE A PASTY VISCOUS COVER ON THE SURFACE OF THE MOLTEN METAL AT 750* C., THE FLUX HAVING A SPECIFIC GRAVITY OF AT LEAST 2.2 AT 800*C. AND BEING SUBSTANTIALLY FREE FROM SODIUM FLUORIDE.