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1. (WO2019031399) METHOD FOR MANUFACTURING POWDER MAGNETIC CORE, AND METHOD FOR MANUFACTURING ELECTROMAGNETIC COMPONENT
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/031399 International Application No.: PCT/JP2018/029163
Publication Date: 14.02.2019 International Filing Date: 03.08.2018
IPC:
B22F 3/00 (2006.01) ,B22F 1/00 (2006.01) ,B22F 1/02 (2006.01) ,C22C 38/00 (2006.01) ,H01F 1/24 (2006.01) ,H01F 1/33 (2006.01) ,H01F 41/02 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
3
Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
1
Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
1
Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
02
comprising coating of the powder
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
F
MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1
Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01
of inorganic materials
03
characterised by their coercivity
12
of soft-magnetic materials
14
metals or alloys
20
in the form of particles, e.g. powder
22
pressed, sintered, or bound together
24
the particles being insulated
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
F
MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1
Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01
of inorganic materials
03
characterised by their coercivity
12
of soft-magnetic materials
33
mixtures of metallic and non-metallic particles; metallic particles having oxide skin
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
F
MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
41
Apparatus or processes specially adapted for manufacturing or assembling the devices covered by this subclass
02
for manufacturing cores, coils or magnets
Applicants:
住友電気工業株式会社 SUMITOMO ELECTRIC INDUSTRIES, LTD. [JP/JP]; 大阪府大阪市中央区北浜四丁目5番33号 5-33, Kitahama 4-chome, Chuo-ku, Osaka-shi, Osaka 5410041, JP
住友電工焼結合金株式会社 SUMITOMO ELECTRIC SINTERED ALLOY, LTD. [JP/JP]; 岡山県高梁市成羽町成羽2901番地 2901, Nariwa, Nariwa-cho, Takahashi-shi, Okayama 7160192, JP
Inventors:
齋藤 達哉 SAITO Tatsuya; JP
上野 友之 UENO Tomoyuki; JP
山田 浩司 YAMADA Koji; JP
Agent:
中田 元己 NAKATA Motomi; JP
森田 剛史 MORITA Takeshi; JP
高城 政浩 TAKAGI Masahiro; JP
緒方 大介 OGATA Daisuke; JP
久貝 裕一 KUGAI Hirokazu; JP
Priority Data:
2017-15604310.08.2017JP
Title (EN) METHOD FOR MANUFACTURING POWDER MAGNETIC CORE, AND METHOD FOR MANUFACTURING ELECTROMAGNETIC COMPONENT
(FR) PROCÉDÉ DE FABRICATION D'UN NOYAU MAGNÉTIQUE EN POUDRE ET D'UN COMPOSANT ÉLECTROMAGNÉTIQUE
(JA) 圧粉磁心の製造方法、電磁部品の製造方法
Abstract:
(EN) A method for manufacturing a powder magnetic core, provided with: a step for preparing, as raw material powders, a soft magnetic powder including composite soft magnetic particles including pure iron and an Fe-α-type alloy containing an element α more readily oxidized than Fe, the composite soft magnetic particles having a core-shell structure in which one of the pure iron and the Fe-α-type alloy is a core part and the other is a shell part, and an oxide powder including oxide particles containing at least one species selected from Fe and an element β that forms an oxide having higher electrical resistance than Fe3O4, and preparing a mixed powder in which the soft magnetic powder and the oxide powder are mixed; a step for compression-molding the mixed powder to obtain a powder compact; and a step for sintering the powder compact at a temperature of 900°C to 1300°C.
(FR) L'invention concerne un procédé de fabrication d'un noyau magnétique en poudre qui comprend les étapes suivantes : la préparation, en tant que poudres de départ, d'une poudre magnétique douce comprenant des particules magnétiques douces et composites comprenant du fer pur et un alliage de type Fe-α contenant un élément α plus facilement oxydé que le fer, les particules magnétiques douces et composites ayant une structure cœur-enveloppe dans laquelle l'un parmi le fer pur et l'alliage de type Fe-α forme la partie de cœur, l'autre formant la partie enveloppe, d'une poudre d'oxyde comprenant des particules d'oxyde contenant au moins une espèce choisie parmi Fe et un élément β qui forme un oxyde ayant une résistance électrique supérieure à celle de Fe3O4, et la préparation d'une poudre mélangée dans laquelle la poudre magnétique douce et la poudre d'oxyde sont mélangées ; le moulage par compression de la poudre mélangée pour obtenir un comprimé de poudre ; le frittage du comprimé de poudre à une température allant de 900 °C à 1300 °C.
(JA) 原料粉末として、純鉄と、Feよりも酸化し易い元素αを含有するFe-α系合金とを含み、いずれか一方をコア部、他方をシェル部とするコアシェル構造の複合軟磁性粒子を含む軟磁性粉末と、Fe及びFeよりも電気抵抗が高い酸化物を形成する元素βから選択される少なくとも1種を含有する酸化物粒子を含む酸化物粉末とを用意し、前記軟磁性粉末と前記酸化物粉末とを混合した混合粉末を準備する工程と、前記混合粉末を圧縮成形して圧粉成形体とする工程と、前記圧粉成形体を900℃以上1300℃以下で焼結する工程と、を備える圧粉磁心の製造方法。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)