PURPOSE: To easily obtain metal powder uniformly dispersed reinforcing material by injecting the molten metal mixed and dispersed the reinforcing materials of short fiber, etc., into a cooling liquid layer formed on the inner circumferential face in a rotary drum, thereby cutting the molten metal into piece and solidifying.
CONSTITUTION: The reinforcing material of short fiber, whisker or particle shape is dispersed into molten matrix metal. This mixed molten metal 11 is injected from an injection hole 5. Then, this is cut into pieces and solidified in a cooling liquid layer 3 formed on the inner circumferential face of the rotating cooling drum 1. Thus, the rapidly cooled solidified powder of matrix metal uniformly dispersed with the reinforcing materials, is easily obtd.
AOKI TOSHIYUKI
ISHIHARA KOICHI
