Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PREPARATION OF POWDER
Document Type and Number:
Japanese Patent JPS5867805
Kind Code:
A
Abstract:

PURPOSE: To simply obtain a metal powder suitable for powder metallurgy, by a method wherein a liquid cooling medium is flowed on the surface of a rotor and a molten metal is atomized while being flowed onto the cooling medium to prevent the deposition of the metal to the surface of the rotor.

CONSTITUTION: The interior of a container is held under a non-oxidative atmosphere or a reductive atmosphere and a rotor 5 is rotated at a high speed. A liquid cooling medium 8 is flowed on the rotor 5 from a cooling medium supply pipe 7 and a slide nozzle 4 is opened to flow the molten metal 3 in a crucible on the cooling medium. This molten metal 3 is flowed on the rotor 5 along the liquid cooling medium while exerted by the centrifugal force by the rotor 5 and scattered and atomized by impact force to the rotor 5, the centrifugal force received from the rotor 5 and intumescent force of the cooling medium. At the same time, atomized particles are rapidly solidified from the surfaces thereof by the evaporation heat of the cooling medium 8 and solidified while an irregular shape during scattering remains to fall into a powder container 9.


Inventors:
SAWA SHIGEKI
HORATA AKIRA
Application Number:
JP16644681A
Publication Date:
April 22, 1983
Filing Date:
October 20, 1981
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DAIDO STEEL CO LTD
International Classes:
B22F9/10; (IPC1-7): B22F9/08
Attorney, Agent or Firm:
Yutaka Oshio