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公开(公告)号：US20180141072A1
公开(公告)日：2018-05-24
申请号：US15570243
申请日：2016-04-18
Applicant: SHIN-ETSU CHEMICAL CO., LTD.
Inventor： Yukihiro KURIBAYASHI , Shogo KAMIYA , Harukazu MAEGAWA , Shintaro TANAKA
CPC classification number: B05B13/0221 , B05D1/02 , B05D3/02 , B22F3/00 , B22F3/24 , B22F2003/248 , C22C38/00 , H01F1/057 , H01F1/0577 , H01F1/086 , H01F41/0293
Abstract: When a slurry s obtained by dispersing a rare-earth-compound powder in a solvent is applied to sintered magnet bodies m, and dried to remove the solvent in the slurry and cause the surfaces of the sintered magnet bodies to be coated with the powder, and the sintered magnet bodies coated with the powder are heat treated to cause the rare-earth element to be absorbed by the sintered magnet bodies, the sintered magnet bodies m are warmed or heated before the slurry s is applied. As a result, the rare-earth-compound powder can be efficiently and uniformly applied to the surfaces of the sintered magnet bodies.
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公开(公告)号：US20180137974A1
公开(公告)日：2018-05-17
申请号：US15570202
申请日：2016-04-18
Applicant: SHIN-ETSU CHEMICAL CO., LTD.
Inventor： Yukihiro KURIBAYASHI , Shogo KAMIYA , Harukazu MAEGAWA , Shintaro TANAKA
IPC: H01F41/02 , B05C13/02 , B05C3/10 , B05D1/18 , B05D7/24 , B05D3/04 , C22C38/00 , C22C38/02 , C22C38/16 , C22C38/06 , H01F1/057
Abstract: A coating tank 1 provided with a net belt passage opening is prepared, a slurry obtained by dispersing a rare-earth-compound powder in a solvent is continuously supplied to the coating tank 1 to cause the coating tank 1 to overflow, and a plurality of sintered magnet bodies 10 are arranged on a net belt conveyor 5, continuously conveyed horizontally thereon, and passed through the slurry in the coating tank 1 via the net belt passage opening, to apply the slurry to the sintered magnet bodies. The slurry is subsequently dried to continuously apply the powder to the plurality of sintered magnet bodies. As a result, the rare-earth-compound powder can be uniformly applied to the surfaces of the sintered magnet bodies, and the application operation can be performed extremely efficiently.
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公开(公告)号：US20180294095A1
公开(公告)日：2018-10-11
申请号：US15570223
申请日：2016-04-18
Applicant: SHIN-ETSU CHEMICAL CO., LTD.
Inventor： Yukihiro KURIBAYASHI , Shogo KAMIYA , Harukazu MAEGAWA , Shintaro TANAKA
IPC: H01F41/02 , C22C38/16 , C22C38/06 , C22C38/02 , C22C38/00 , B22F9/04 , B22F3/16 , B22F3/24 , B05D1/18 , B05D3/02 , C21D6/00 , 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.
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公开(公告)号：US20180158606A1
公开(公告)日：2018-06-07
申请号：US15569982
申请日：2016-04-18
Applicant: SHIN-ETSU CHEMICAL CO., LTD.
Inventor： Yukihiro KURIBAYASHI , Shogo KAMIYA , Harukazu MAEGAWA , Shintaro TANAKA
CPC classification number: H01F41/0293 , B05D1/18 , B05D3/00 , B05D7/00 , B22F3/00 , B22F3/24 , B22F2003/248 , B22F2301/45 , C21D6/00 , C22C33/02 , C22C38/00 , H01F1/0577
Abstract: When sintered magnet bodies 1 are held in a jig 2 having a rotational axis in the vertical direction, immersed in a slurry 41 to apply the slurry thereto, rotated in conjunction with the jig to remove the surplus slurry on the surface of each of the sintered magnet bodies by centrifugal force, and subsequently dried to cause the surfaces of the sintered magnet bodies to be coated with a powder, the slurry is applied while the sintered magnet bodies are held such that no portion of any of the outer surfaces forming the contours of the sintered magnet bodies is orthogonal to the direction of the centrifugal force. As a result, the rare-earth-compound powder can be uniformly applied to the surfaces of the sintered magnet bodies.
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Patent Agency Ranking
公开(公告)号：US20180122572A1
公开(公告)日：2018-05-03
申请号：US15569881
申请日：2016-04-18
Applicant: SHIN ETSU CHEMICAL CO., LTD.
Inventor： Yukihiro KURIBAYASHI , Shogo KAMIYA , Harukazu MAEGAWA , Shintaro TANAKA
CPC classification number: H01F41/0293 , B05C3/10 , B05C13/02 , B05D1/18 , B05D5/12 , B05D2401/10 , B05D2401/32 , B22F3/00 , B22F3/24 , B22F9/04 , B22F2998/10 , B22F2999/00 , C22C38/002 , C22C38/005 , H01F1/0536 , H01F1/0577 , H01F1/086
Abstract: When a slurry in which a rare-earth-compound powder is dispersed is applied to sintered magnet bodies 1 and dried to apply the powder thereto, the sintered magnet bodies 1 are conveyed by a conveyer 2 and made to pass through the slurry 4 to apply the slurry to the sintered magnet bodies 1. Furthermore, a plurality of push-up members 51, which pass through insertion holes 22 provided in a conveyor belt 21, and protrude above the conveyor belt, are used to temporarily push up the sintered magnet bodies 1, and temporarily separate the conveyor belt 21 and the sintered magnet bodies 1. As a result, the slurry can be efficiently applied, even mass production can be suitably dealt with, and the slurry can be uniformly and reliably applied to the entire surface of each of the sintered magnet bodies.
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公开(公告)号：US20210027941A1
公开(公告)日：2021-01-28
申请号：US17039514
申请日：2020-09-30
Applicant: SHIN-ETSU CHEMICAL CO., LTD.
Inventor： Yukihiro KURIBAYASHI , Shogo KAMIYA , Harukazu MAEGAWA , Shintaro TANAKA
IPC: H01F41/02 , B05C3/10 , B05C13/02 , B22F3/24 , C22C38/00 , B22F3/00 , B05D3/04 , B05D7/24 , C22C38/02 , C22C38/06 , C22C38/16 , H01F1/057
Abstract: A coating tank 1 provided with a net belt passage opening is prepared, a slurry obtained by dispersing a rare-earth-compound powder in a solvent is continuously supplied to the coating tank 1 to cause the coating tank 1 to overflow, and a plurality of sintered magnet bodies 10 are arranged on a net belt conveyor 5, continuously conveyed horizontally thereon, and passed through the slurry in the coating tank 1 via the net belt passage opening, to apply the slurry to the sintered magnet bodies. The slurry is subsequently dried to continuously apply the powder to the plurality of sintered magnet bodies. As a result, the rare-earth-compound powder can be uniformly applied to the surfaces of the sintered magnet bodies, and the application operation can be performed extremely efficiently.
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公开(公告)号：US20180133751A1
公开(公告)日：2018-05-17
申请号：US15570233
申请日：2016-04-18
Applicant: SHIN-ETSU CHEMICAL CO., LTD.
Inventor： Yukihiro KURIBAYASHI , Shogo KAMIYA , Harukazu MAEGAWA , Shintaro TANAKA
CPC classification number: B05D1/06 , B05B5/035 , B05B5/082 , B05B13/0221 , B22F3/24 , C21D6/00 , C22C33/02 , C22C38/00 , H01F1/057 , H01F1/0577 , H01F1/086 , H01F41/0293
Abstract: A sintered magnet body is held in a grounded jig exhibiting excellent electrical conductivity, a rare-earth-compound powder is charged and sprayed on the sintered magnet body to electrostatically coat the sintered magnet body with the powder, and thus apply the powder to the sintered magnet body. The sintered magnet body having the powder applied thereto is heat treated to produce a rare-earth magnet. As a result, the rare-earth-compound powder can be uniformly applied to the surface of the sintered magnet body, and the application operating can be performed extremely efficiently.
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公开(公告)号：US20180114617A1
公开(公告)日：2018-04-26
申请号：US15570044
申请日：2016-04-18
Applicant: SHIN-ETSU CHEMICAL CO., LTD.
Inventor： Yukihiro KURIBAYASHI , Shogo KAMIYA , Harukazu MAEGAWA , Shintaro TANAKA
IPC: H01F1/057 , B22F3/24 , C21D6/00 , C22C38/16 , C22C38/06 , C22C38/00 , C22C38/02 , C22C33/02 , H01F41/02
Abstract: A fixed beam 2 along which magnet-body holding sections 22 are consecutively provided is disposed so as to pass through a slurry 1. Sintered magnet bodies m placed in the magnet-body holding sections 22 by movable beams 3 are conveyed by repeating an operation in which the sintered magnet bodies m are moved to the following magnet-body holding sections 22. While being conveyed, the sintered magnet bodies m are passed through the slurry 1 to apply the slurry thereto, and are subsequently dried to remove a solvent in the slurry and affix a powder in the slurry thereto, and, as a result, the powder is continuously applied to the plurality of sintered magnet bodies. Accordingly, a rare-earth-compound powder can be uniformly applied to the surfaces of the sintered magnet bodies, and the amount of the slurry taken from a coating tank can be reduced to effectively decrease wasteful consumption.
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公开(公告)号：US20180108476A1
公开(公告)日：2018-04-19
申请号：US15569888
申请日：2016-04-18
Applicant: SHIN-ETSU CHEMICAL CO., LTD.
Inventor： Yukihiro KURIBAYASHI , Shogo KAMIYA , Harukazu MAEGAWA , Shintaro TANAKA
CPC classification number: H01F41/0253 , B05C3/09 , B05C9/14 , B05D1/002 , B05D1/18 , B05D3/0254 , B05D2258/00 , B22F3/16 , B22F3/24 , B22F2003/248 , C22C33/02 , C22C38/00 , H01F1/0577 , H01F41/0293 , H01F41/20 , H01F41/22
Abstract: When a slurry 41 obtained by dispersing a rare-earth-compound powder in a solvent is applied to sintered magnet bodies 1, and dried to remove the solvent in the slurry and cause the surfaces of the sintered magnet bodies to be coated with the powder, and the sintered magnet bodies coated with the powder are heat treated to cause the rare-earth element to be absorbed by the sintered magnet bodies, the sintered magnet bodies having had the slurry applied thereto are dried by being irradiated with near infrared radiation having a wavelength of 0.8-5 μm, to remove the solvent in the slurry, and cause the surfaces of the sintered magnet bodies to be coated with the powder. As a result, the rare-earth-compound powder can be uniformly and efficiently applied to the surfaces of the sintered magnet bodies.
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