PURPOSE: To obtain metallic shot of desired uniform grain sizes by placing the tip of a nozzle on or blow the water surface and dropping molten metal through the nozzle thereby solidifying the same.
CONSTITUTION: Metal of 300W600°C m.p., for example, Zn, Cu, Ag, Sn, Pb, Al or their allot is melted by using a nozzle receiver 1 made of refractories. The molten metal is dropped through a nozzle 4 of which the tip is placed on or below the water surface 8 of the water 10 stored in a water tank 7 into the water 10. The temp. of the water 10 is kept at 60W70°C by replenishing cold water therein. The molten metal cools and solidifies to form shot 12. The formed shot 12 is captured with a removing cage 9 in the bottom part of the tank 7. The yield is 93W98%.
AKAGI SUSUMU
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