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.:
Date of Patent:
Feb. 08, 2022
Filed:
Oct. 15, 2018
Applicants:
Ningbo Yunsheng Co., Ltd., Zhejiang, CN;
Ningbo Yunsheng Magnet Devices Technology Co., Ltd., Zhejiang, CN;
Inventors:
Jingjing Jing, Zhejiang, CN;
Caicai Peng, Zhejiang, CN;
Assignees:
NINGBO YUNSHENG CO., LTD., Zhejiang, CN;
NINGBO YUNSHENG MAGNET DEVICES TECHNOLOGY CO., LTD., Zhejiang, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D 5/14 (2006.01); C25D 7/00 (2006.01); C25D 3/12 (2006.01); C25D 3/22 (2006.01); C25D 3/38 (2006.01); C25D 3/56 (2006.01); C25D 5/12 (2006.01); C25D 5/34 (2006.01); C25D 5/00 (2006.01);
U.S. Cl.
CPC ...
C25D 5/14 (2013.01); C25D 3/12 (2013.01); C25D 3/22 (2013.01); C25D 3/38 (2013.01); C25D 3/562 (2013.01); C25D 5/12 (2013.01); C25D 5/34 (2013.01); C25D 5/605 (2020.08); C25D 7/001 (2013.01);
Abstract
Disclosed is a composite electroplating method for sintered NdFeB magnet, including: a process of pre-treating sintered NdFeB magnet, a process of electroplating the pre-treated sintered NdFeB magnet, and a process of cleaning and drying the electroplated sintered NdFeB magnet. The electroplating process forms a composite coating composed of a Zn coating, a Zn—Ni alloy coating, a Cu coating and a Ni coating on the surface of the sintered NdFeB magnet.