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1. WO2020179377 - IRON-BASED POWDER FOR POWDER MAGNETIC CORE, AND POWDER MAGNETIC CORE

Publication Number WO/2020/179377
Publication Date 10.09.2020
International Application No. PCT/JP2020/005168
International Filing Date 10.02.2020
IPC
B22F 1/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
B22F 1/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
02comprising coating of the powder
B22F 3/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
C22C 38/00 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
H01F 1/24 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01of inorganic materials
03characterised by their coercivity
12of soft-magnetic materials
14metals or alloys
20in the form of particles, e.g. powder
22pressed, sintered, or bound together
24the particles being insulated
H01F 1/26 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01of inorganic materials
03characterised by their coercivity
12of soft-magnetic materials
14metals or alloys
20in the form of particles, e.g. powder
22pressed, sintered, or bound together
24the particles being insulated
26by macromolecular organic substances
Applicants
  • JFEスチール株式会社 JFE STEEL CORPORATION [JP]/[JP]
Inventors
  • 山本 尚貴 YAMAMOTO Naoki
  • 高下 拓也 TAKASHITA Takuya
  • 中世古 誠 NAKASEKO Makoto
  • 小林 聡雄 KOBAYASHI Akio
  • 宇波 繁 UNAMI Shigeru
Agents
  • 杉村 憲司 SUGIMURA Kenji
Priority Data
2019-04080506.03.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) IRON-BASED POWDER FOR POWDER MAGNETIC CORE, AND POWDER MAGNETIC CORE
(FR) POUDRE À BASE DE FER POUR NOYAU MAGNÉTIQUE EN POUDRE, ET NOYAU MAGNÉTIQUE EN POUDRE
(JA) 圧粉磁芯用鉄基粉末および圧粉磁芯
Abstract
(EN)
Provided is an iron-based powder for a powder magnetic core, from which a powder magnetic core having a high apparent density and a high green density can be produced. An iron-based powder for a powder magnetic core, which has a largest particle diameter of 1 mm or less, wherein the median value of the degrees of circularity of particles constituting the iron-based powder for a powder magnetic core is 0.40 or more, and the distribution constant in the Rosin-Rammler equation is 0.30 to 90.0 inclusive.
(FR)
L'invention concerne une poudre à base de fer pour un noyau magnétique en poudre, à partir de laquelle un noyau magnétique en poudre présentant une densité apparente élevée et une densité crue élevée peut être produit. Poudre à base de fer pour un noyau magnétique en poudre, qui présente un diamètre de particule la plus grande de 1 mm ou moins, la valeur médiane des degrés de circularité des particules constituant la poudre à base de fer pour un noyau magnétique en poudre étant de 0,40 ou plus, et la constante de distribution dans l'équation Rosin-Rammler étant de 0,30 à 90,0 inclus.
(JA)
見掛密度が高く、高い圧粉密度を有する圧粉磁芯を製造することができる圧粉磁芯用鉄基粉末を提供する。 圧粉磁芯用鉄基粉末であって、最大粒径が1mm以下であり、前記圧粉磁芯用鉄基粉末を構成する粒子の円形度の中央値が0.40以上であり、Rosin-Rammlerの式における均等数が0.30以上、90.0以下である、圧粉磁芯用鉄基粉末。
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