Process and salt for descaling of metals

Claim 1

THE PROCESS FOR REMOVING THE CONTAMINATED HIGH OXYGEN-CONTAINING SURFACE LAYER AND ANNEALED SCALE OF MOLYBDENUM AND ITS ALLOYS, WHICH COMPRISES IMMERSING THE METAL TO BE TREATED IN A MOLTEN SUBSTANTIALLY NONOXIDIZING AND NON-REDUCING COMPOSITION MAINTAINED AT A TEMPERATURE OF BETWEEN ABOUT 650*F. TO 1250*F., COMPRISING 50 PERCENT TO 90 PERCENT BY WEIGHT OF ALKALI METAL HYDROXIDE, 2 PERCENT TO 25 PERCENT BY WEIGHT SELECTED FROM THE GRAOUP CONSISTING OF ALKALI METAL PHOSPHATE, ALKALINE EARTH METAL PHOSPHATE, AND MIXTURES THEREOF, 0.5 PERCENT TO 30 PERCENT BY WEIGHT OF ALKALI METAL CARBONATE, 0.5 PERCENT TO 25 PERCENT BY WEIGHT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HALIDE, ALKALINE EARTH METAL HALIDE, AND MIXTURES THEREOF, WHEREIN THE ALKALI METAL IN THE ABOVE ALKALI METAL HYDROXIDE, ALKALI METAL PHOSPHATE, ALKALI METAL CARBONATE AND ALKALINE EARTH IS SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, LITHIUM, RUBIDIUM AND MIXTURES THEREOF, AND WHERE IN THE ALKALINE EARTH METAL IN THE ABOVE ALKALINE EARTH METAL PHOSPHATE AND ALKALINE EARTH METAL HALIDE IS SELECTED FROM THE GROUP CONSISTING OF CALCIUM, BARIUM, MAGNESIUM AND MIXTURES THEREOF, AND CONTINUING THE IMMERSION FOR AT LEAST THIRY SECONDS AND THEN SUBJECTING THE SAMPLE TO A WATER QUENCH.