PERMANENT MAGNET, METHOD OF MANUFACTURING PERMANENT MAGNET, DYNAMO-ELECTRIC MACHINE AND METHOD OF MANUFACTURING DYNAMO-ELECTRIC MACHINE

• Main Authors: YAMAGUCHI YOSHIO, IMOTO EIICHI, KUME KATSUYA, OMURE TOMOHIRO, OZEKI IZUMI, MORIMOTO MASAKAZU, KATO YUKI, HOSHINO TOSHINOBU, EBE HIROSHI, OKUNO TOSHIAKI, SAITO SHOICHIRO, FUJIWARA MAKOTO, YAMAMOTO TAKASHI, FUJIKAWA KENICHI
• Format: Patent
• Language: English; Japanese
• Published: 07.03.2016
• Subjects: ALLOYS; BASIC ELECTRIC ELEMENTS; CASTING; CHEMISTRY; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; GENERATION; INDUCTANCES; MAGNETS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

PROBLEM TO BE SOLVED: To provide a permanent magnet in which high near-net shape properties are achieved, and a gap occurring between a housing section and the permanent magnet is reduced when the permanent magnet is installed in the housing section, and to provide a method of manufacturing a permanent magnet, a dynamo-electric machine and a method of manufacturing a dynamo-electric machine.SOLUTION: A compound 17 is produced by pulverizing a magnet material into magnet powder 15, and then mixing the magnet powder thus pulverized and a binder. A green sheet 19 is created by molding the compound 17 thus produced like a sheet. Subsequently, the green sheet 19 thus molded is subjected to magnetic field orientation by applying a magnetic field, and shaped like a product by deforming the green sheet 19 while taking account of the magnetic field orientation direction thereof. Thereafter, a compact 30 thus shaped is housed in a slot 4 and sintered while being compressed in uniaxial direction, thus producing a permanent magnet.SELECTED DRAWING: Figure 7 【課題】高いニアネットシェイプ性について実現し、収容部内に永久磁石を設置した際に収容部と永久磁石との間に生じる隙間を減少させた永久磁石、永久磁石の製造方法、回転電機及び回転電機の製造方法を提供する。【解決手段】磁石原料を磁石粉末１５に粉砕し、粉砕された磁石粉末とバインダーとを混合することによりコンパウンド１７を生成する。そして、生成したコンパウンド１７をシート状に成形したグリーンシート１９を作製する。その後、成形したグリーンシート１９に対して磁場を印加することにより磁場配向を行い、磁場配向されたグリーンシート１９の磁場配向方向を考慮しつつグリーンシート１９を変形させることによって製品形状へと成形する。その後、成形された成形体３０をスロット４に収容して一軸方向に加圧した状態で焼結することにより永久磁石を製造する。【選択図】図７