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:
Nov. 12, 2024
Filed:
May. 26, 2021
Grirem Hi-tech Co., Ltd., Hebei, CN;
Grirem Advanced Materials Co.,ltd., Beijing, CN;
Grirem (Rongcheng) Co., Ltd., Shandong, CN;
Yang Luo, Beijing, CN;
Yuanfei Yang, Beijing, CN;
Zilong Wang, Beijing, CN;
Dunbo Yu, Beijing, CN;
Jiajun Xie, Beijing, CN;
Kaiwen Wu, Beijing, CN;
Yifan Liao, Beijing, CN;
Jichen Jia, Beijing, CN;
GRIREM HI-TECH CO., LTD., Langfang, CN;
GRIREM ADVANCED MATERIALS CO., LTD., Beijing, CN;
Grirem (Rongcheng) Co., Ltd., Weihai, CN;
Abstract
An anisotropic bonded magnet and a preparation method thereof are provided. Through a method of stacking magnets which are different in content of SmFeN and/or have different densities, the magnets in the middle have high properties and the magnets at two ends and/or the periphery have low properties, thereby compensating for a property deviation caused by a difference in densities during a pressing process, and improving the property uniformity of the magnets in an axial direction. The method avoids the phenomenon of non-uniform magnetic field orientation and density in a height direction during orientation and densification as well as the phenomenon of low in the middle and high at two ends.