DEVICE AND METHOD FOR PREPARING ULTRAFINE SPHERICAL METAL POWDER USING DROP-BY-DROP CENTRIFUGAL ATOMIZATION METHOD

WIPO Patent Application WO/2020/063625

A1

A device and method for preparing an ultrafine spherical metal powder by using a drop-by-drop centrifugal atomization method. The device comprises a housing (20), a crucible (2) provided in the housing (20), and a powder collection area. A turntable (8) provided in the powder collection area is an inlaid structure. A material with poor thermal conductivity is selected as a base portion of the turntable (8). A metal material that has a wetting angle of less than 90° with a droplet is selected and inlaid into a main portion as the atomizing plane of the turntable (8). A ventilation hole (24) is provided in the turntable (8). The method for preparing an ultrafine spherical metal powder by means of the drop-by-drop centrifugal atomization method mainly combines the two methods of a uniform droplet ejection method and a centrifugal atomization method, and surmounts a traditional metal splitting mode such that molten metal exhibits fibrous splitting, so that an ultrafine spherical metal powder that has a narrow particle size distribution range, high sphericity, good fluidity, excellent spreadability, a uniform and controllable size, and no satellite droplets may be efficiently prepared, and is suitable for industrial production.

WANG XIAOMING (CN)
ZHU SHENG (CN)
ZHAO YANG (CN)
WANG SIJIE (CN)
HAN GUOFENG (CN)
SHI JING (CN)
CHANG QING (CN)
REN ZHIQIANG (CN)
TENG TAO (CN)
SUN YU (CN)
DONG WEI (CN)
MENG YAO (CN)
BAI ZHAOFENG (CN)
XU FUMIN (CN)
WANG YANYANG (CN)
HAN YANG (CN)
LI GUOBIN (CN)

PCT/CN2019/107703

April 02, 2020

September 25, 2019

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UNIV DALIAN TECH (CN)
WANG XIAOMING (CN)
ZHU SHENG (CN)
ZHAO YANG (CN)
WANG SIJIE (CN)
HAN GUOFENG (CN)
SHI JING (CN)
CHANG QING (CN)
REN ZHIQIANG (CN)
TENG TAO (CN)
SUN YU (CN)

B22F9/10

CN109014227A	2018-12-18
CN109047785A	2018-12-21
CN109093127A	2018-12-28
CN109128206A	2019-01-04
CN104550988A	2015-04-29
JP2009062573A	2009-03-26
CN107350477A	2017-11-17
US4323523A	1982-04-06
CN104588673A	2015-05-06
CN107116226A	2017-09-01
CN2649227Y	2004-10-20

DALIAN EAST PATENT AGENT LTD. (CN)

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