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:
Oct. 30, 2018
Filed:
Dec. 24, 2013
Beijing Zhong KE San Huan Hi-tech Co., Ltd., Beijing, CN;
Sanvac (Beijing) Magnetics Co., Ltd., Beijing, CN;
Boping Hu, Beijing, CN;
Yugang Zhao, Beijing, CN;
Jin Zhang, Beijing, CN;
Guoan Chen, Beijing, CN;
Xiaolei Rao, Beijing, CN;
E Niu, Beijing, CN;
Zhian Chen, Beijing, CN;
Guoshun Jin, Beijing, CN;
Jingdong Jia, Beijing, CN;
Beijing Zhong Ke San Huan Hi-Tech Co., LTD., Haidian District, Beijing, CN;
Sanvac (Beijing) Magnetics Co., LTD., Chang Ping District, Beijing, CN;
Abstract
A sintered neodymium-iron-boron magnet, the main components thereof comprising rare-earth elements R, additional elements T, iron Fe and boron B, and having a rare-earth-enriched phase and a main phase of a Nd2Fe14B crystal structure. The sum of the numerical values of the maximum magnetic energy product (BH)max in units of MGOe and the intrinsic coercive force Hcj in units of kOe is not less than 70. The manufacturing method of the sintered neodymium-iron-boron magnet comprises alloy smelting, powder making, powder mixing, press forming, sintering and heat treatment procedures. By controlling the component formulation and optimizing the process conditions, the sintered neodymium-iron-boron magnet is enabled to simultaneously have a high maximum magnetic energy product and a high intrinsic coercive force.