Title:
DEVICE AND METHOD FOR HIGHLY EFFICIENT PREPARATION OF SUPERFINE SPHERICAL METAL POWDER BY MEANS OF DROP-BY-DROP CENTRIFUGAL ATOMIZATION PROCESS
Document Type and Number:
WIPO Patent Application WO/2020/063626
Kind Code:
A1
Abstract:
Disclosed are a device and a method for highly efficient preparation of a superfine spherical metal powder by means of a drop-by-drop centrifugal atomization process. The device comprises a housing (20), a crucible (2) and a powder collecting region disposed in the housing (20), and a rotating disc (8) having an embedded structure, and disposed in the powder collecting region. A material having poor thermal conductivity is selected as a base portion of the rotating disc (8), and a metal material having a droplet wetting angle of less than 90º is selected and embedded into the base portion of the rotating disc (8) as an atomizing surface (23) of the rotating disc (8). A concentric groove (25) is provided on the atomizing surface (23), and a vent hole (24) is provided on the rotating disc (8). The method for highly efficient preparation of a superfine spherical metal powder by means of a drop-by-drop centrifugal atomization process mainly combines a uniform droplet spray process with a centrifugal atomization process, and represents a breakthrough with regard to conventional metal splitting techniques in that the molten metal splits in a fibrous manner. Thus, the method achieves highly efficient preparation of a superfine spherical metal powder having narrow particle size distribution, high sphericity, good fluidity, excellent spreadability, uniform and controllable size, and no satellite drops, and is suitable for industrial production.
Inventors:
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)
XU FUMIN (CN)
BAI ZHAOFENG (CN)
WANG YANYANG (CN)
HAN YANG (CN)
LI GUOBIN (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)
XU FUMIN (CN)
BAI ZHAOFENG (CN)
WANG YANYANG (CN)
HAN YANG (CN)
LI GUOBIN (CN)
Application Number:
PCT/CN2019/107704
Publication Date:
April 02, 2020
Filing Date:
September 25, 2019
Export Citation:
Assignee:
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)
UNIV DALIAN TECH (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)
UNIV DALIAN TECH (CN)
International Classes:
B22F9/10; B22F1/065
Foreign References:
| CN109128206A | 2019-01-04 | |||
| CN104588674A | 2015-05-06 | |||
| JPS63145703A | 1988-06-17 | |||
| CN104525961A | 2015-04-22 | |||
| CN104550988A | 2015-04-29 | |||
| US5188168A | 1993-02-23 | |||
| CN107570721A | 2018-01-12 |
Attorney, Agent or Firm:
DALIAN EAST PATENT AGENT LTD. (CN)
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