Invention Grant
- Patent Title: Method for producing rare-earth magnets, and slurry application device
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Application No.: US15570223Application Date: 2016-04-18
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Publication No.: US10861645B2Publication Date: 2020-12-08
- Inventor: Yukihiro Kuribayashi , Shogo Kamiya , Harukazu Maegawa , Shintaro Tanaka
- Applicant: SHIN-ETSU CHEMICAL CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: SHIN-ETSU CHEMICAL CO., LTD.
- Current Assignee: SHIN-ETSU CHEMICAL CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2015-092038 20150428
- International Application: PCT/JP2016/062202 WO 20160418
- International Announcement: WO2016/175065 WO 20161103
- Main IPC: H01F41/02
- IPC: H01F41/02 ; B22F3/24 ; C22C38/00 ; B05C3/10 ; C22C33/02 ; H01F1/057 ; B05D1/18 ; B05D3/02 ; B22F3/16 ; B22F9/04 ; C21D6/00 ; C22C38/02 ; C22C38/06 ; C22C38/16 ; H01F1/08

Abstract:
A method for producing rare-earth magnets is provided in which, when a slurry 2 having a rare-earth-compound powder dispersed therein is applied to sintered magnet bodies 1 and dried to apply the powder thereto, the magnet bodies 1 are accommodated and conveyed in holding pockets 42 of a conveyance drum 4 which rotates in a state of being partially immersed in the slurry 2, and, as a result, the magnet bodies 1 are immersed in the slurry 2, withdrawn from the slurry 2, and dried to apply the powder to the sintered magnet bodies 1. According to this production method, the powder can be uniformly and efficiently applied, wastage of the rare-earth compound can be effectively suppressed, and a reduction in the surface area of equipment for performing an application step can also be achieved.
Public/Granted literature
- US20180294095A1 METHOD FOR PRODUCING RARE-EARTH MAGNETS, AND SLURRY APPLICATION DEVICE Public/Granted day:2018-10-11
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