Device and method for high-efficiency preparation of spherical metal powder for 3D printing employing separation into fibers

US11420257B2 · kind B2 · utility

Assignees

• Dalian University of Technology · CN
• Xiaoming Wang · CN
• Sheng Zhu · CN
• Yang Zhao · CN
• Wenyu Wang · CN
• Qing Chang · CN
• Zhiqiang Ren · CN
• Guofeng Han · CN
• Jing Shi · CN
• Tao Teng · CN
• Yu Sun · CN
• Zhiyong Qin · CN

Inventors

• Wei Shan Dong · Beijing, CN
• Yao Meng · Sunnyvale, US
• Sheng Zhu · Beijing, CN
• Xiaoming Wang · Sunnyvale, US
• Yang Zhao · North Andover, US
• Yanyang Wang · Qingdao, CN
• Fumin Xu · 东风镇, CN
• Zhaofeng Bai · 东风镇, CN
• Yang Han · Sunnyvale, US
• Guobin Li · Glückstadt, DE
• Wenyu Wang · Beijing, CN
• Qing Chang · Iowa City, US
• Zhiqiang Ren · Beijing, CN
• Jing Shi · Beijing, CN
• Guofeng Han · Beijing, CN
• Tao Teng · Beijing, CN
• Yu Sun · Shanghai, CN
• Zhiyong Qin · Beijing, CN

Key dates

• Filing date: Sep 25, 2019
• Grant date: Aug 23, 2022
• Expiry date: Sep 25, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22F2999/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An apparatus for efficiently preparing spherical metal powder for 3D printing includes a housing, a crucible and a powder collection area arranged in the housing, wherein a turnplate arranged in the collection area is an inlaid structure. A material having a poor thermal conductivity is selected as the base of the turnplate, and a metal material having a wetting angle less than 90° with respect to droplets is selected and embedded into the base to serve as an atomization plane of the turnplate. An air hole is disposed in the turnplate. The spherical metal powder for 3D printing combines electromagnetic force breaking capillary jet flow and centrifugal atomization, which breaks through the traditional metal split mode, and makes the molten metal in a fibrous splitting.