Method for manufacturing spherical particles out of liquid phase

Details Method for manufacturing spherical particles out of liquid phase Method for manufacturing spherical particles out of liquid phase

1991-07-08

1993-02-02

Roy, Upendra

Specialized metallurgical processes, compositions for use therei

Processes

Producing solid particulate free metal directly from liquid...

75338, 75342, 75343, B22F 900

Patent

active

051834936

ABSTRACT:
To manufacture spherical particles out of liquid phase with a narrow grain spectrum using melting temperatures of up to 1500.degree. C. by generating droplets by means of vibrating nozzles, the liquid phase, the nozzle and the drop distance for the droplets are maintained at a constant temperature of 1.degree. to 10.degree. C. above the melting temperature of the liquid phase until the spherical shape of the falling droplets has stabilized. The particles must then be abruptly chilled.

REFERENCES:
patent: 4428894 (1984-01-01), Bienvenu
patent: 4640806 (1987-02-01), Duerig et al.
patent: 4671906 (1987-06-01), Yasue et al.
patent: 4774037 (1988-09-01), Hendricks

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