APPARATUS FOR CASTING METAL POWDER

    公开(公告)号:JPH0277505A

    公开(公告)日:1990-03-16

    申请号:JP18013589

    申请日:1989-07-12

    Abstract: PURPOSE: To manufacture amorphous metallic powder suitable for obtaining a green compact showing excellent magnetic reaction with compacting by supplying molten metal onto a rotary cooling surface provided with many projecting and recessed parts at a regular specific interval from a storing vessel through a nozzle. CONSTITUTION: Many projections 22 and recessions 24 having regular interval crossing the whole width of the cooling surface 12 and along the arrow mark rotating direction are engraved on the rotary cooling surface 12 of a rotary body attaching serration. The molten metal 16 stored in the storing vessel 14 is supplied on the rotated cooling surface 12 from the opening hole 20 approached to the cooling surface 12 in the nozzle 18 arranged at the lower part of the storing vessel. By this constitution, the molten metal 16 is rapidly cooled on the cooling surface 12 to obtain the amorphous metallic powder. In the casting apparatus 10 for metallic powder, the interval between the adjacent projections 22 is made to 0.01-0.1 cm and the interval between the top part of the projection 22 and the bottom part of the recession 24, is made to 0.005-0.05 cm. Further, the cooling surface 12 is shifted at 100-2,000 m/min speed in the vertical direction. Furthermore, it is preferable that, a slot having the suitable size is arranged vertically in the moving direction of the cooling surface in the nozzle 18.

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