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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12735765 B1

PDFFull Text
Date of Patent:
Sep. 15, 2026

Filed:

Aug. 29, 2023

Copper-tin-nickel brazing material prepared by alloys recycled from e-waste, preparation method therefor and system thereof

Applicant:

Zhengzhou Research Institute of Mechanical Engineering Co., Ltd., Henan, CN;

Inventors:

Weimin Long, Henan, CN;

Tianran Ding, Henan, CN;

Sujuan Zhong, Henan, CN;

Li Bao, Henan, CN;

Junlan Huang, Henan, CN;

Jiao Yang, Henan, CN;

Yuanyuan Dong, Henan, CN;

Hangyan Xue, Henan, CN;

Yanhong Guo, Henan, CN;

Assignee:

ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING CO., LTD., Zhengzhou, CN;

Attorney:

Tarolli, Sundheim, Covell & Tummino LLP

Primary Examiner:

Anthony M Liang

Int. Cl.
CPC ...
C22B 7/04 (2006.01); B23K 35/02 (2006.01); B23K 35/30 (2006.01); C22B 1/00 (2006.01); C22B 9/05 (2006.01); C22B 9/16 (2006.01); C22B 15/00 (2006.01); C22C 3/00 (2006.01); C22C 9/02 (2006.01); B23K 103/12 (2006.01);
U.S. Cl.
CPC ...
C22B 7/04 (2013.01); B23K 35/0244 (2013.01); B23K 35/302 (2013.01); C22B 1/005 (2013.01); C22B 9/05 (2013.01); C22B 9/16 (2013.01); C22B 15/0002 (2013.01); C22B 15/0028 (2013.01); C22B 15/0056 (2013.01); C22C 3/00 (2013.01); C22C 9/02 (2013.01); B23K 2103/12 (2018.08);
Abstract

Copper-tin-nickel brazing material prepared by alloys recycled from E-waste, preparation method therefor, and system thereof are provided. A preparation method for the copper-tin-nickel brazing material includes the following steps: (a) spreading nano-SiOon the bottom of crucible and then adding a crude copper-tin-iron-nickel alloy recycled from E-waste; (b) heating the crucible to melt the crude alloy into a metal liquid so that Zn and Pb in the metal liquid react with the SiOto form a slag that floats out; (c) introducing a refining gas to the bottom of metal liquid in step (b), thereby removing the scums or gases formed by Pb, Fe, S, and O in the metal liquid; (d) performing heat-preserving directional solidification on the metal liquid, to bias-aggregate the Fe and Sb at one end and remove the same to obtain a copper-based intermediate alloy; and smelting and powdering the copper-based intermediate alloy.

Find Patent Forward Citations

Long, Weimin. (2026). Copper-tin-nickel brazing material prepared by alloys recycled from e-waste, preparation method therefor and system thereof (U.S. Patent No. 12735765). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12735765

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