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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 10062503 B1

PDFFull Text
Date of Patent:
Aug. 28, 2018

Filed:

Oct. 11, 2013

Manufacturing method of green compacts of rare earth alloy magnetic powder and a manufacturing method of rare earth magnet

Applicant:

Xiamen Tungsten Co., Ltd., Xiamen, Fujian, CN;

Inventors:

Hiroshi Nagata, Xiamen, CN;

Chonghu Wu, Xiamen, CN;

Assignee:

XIAMEN TUNGSTEN CO., LTD., Xiamen, CN;

Attorney:

Rabin & Berdo, P.C.

Primary Examiner:

Colleen P Dunn

Assistant Examiner:

Jeremy Conrad Jones

Int. Cl.
CPC ...
H01F 41/02 (2006.01); B22F 3/12 (2006.01); H01F 1/057 (2006.01); C22C 38/00 (2006.01); C22C 38/10 (2006.01); B22F 3/14 (2006.01); B22F 3/24 (2006.01); H01F 1/08 (2006.01);
U.S. Cl.
CPC ...
H01F 41/0266 (2013.01); B22F 3/14 (2013.01); B22F 3/24 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/10 (2013.01); H01F 1/0576 (2013.01); H01F 1/0577 (2013.01); H01F 1/08 (2013.01); B22F 2003/248 (2013.01); B22F 2999/00 (2013.01); C22C 2202/00 (2013.01);
Abstract

The present invention discloses a manufacturing method of green compacts of rare earth alloy magnetic powder and a manufacturing method of rare earth magnet, it is a manufacturing method that pressing the rare earth alloy magnetic powder added with organic additive in a closed space filled with inert gases to manufacture the green compacts, wherein the rare earth alloy magnetic powder is compacted under magnetic field in a temperature atmosphere of 25° C.-50° C. and a relative humidity atmosphere of 10%-40%. This method is to set the temperature of the inert atmosphere in a fully closed space, inhibiting bad forming phenomenon of the magnet with low oxygen content (broken, corner-breakage, crack) after sintering, and increasing the degree of orientation, Br and (BH)max.

Find Patent Forward Citations

Nagata, Hiroshi. (2018). Manufacturing method of green compacts of rare earth alloy magnetic powder and a manufacturing method of rare earth magnet (U.S. Patent No. 10062503). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10062503

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