JP2017022248A - 成形体の製造方法 - Google Patents
成形体の製造方法 Download PDFInfo
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- JP2017022248A JP2017022248A JP2015138220A JP2015138220A JP2017022248A JP 2017022248 A JP2017022248 A JP 2017022248A JP 2015138220 A JP2015138220 A JP 2015138220A JP 2015138220 A JP2015138220 A JP 2015138220A JP 2017022248 A JP2017022248 A JP 2017022248A
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- Prior art keywords
- graphite
- powder
- die
- magnet
- molded body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/105—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing inorganic lubricating or binding agents, e.g. metal salts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F2003/023—Lubricant mixed with the metal powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F2003/026—Mold wall lubrication or article surface lubrication
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2202/00—Physical properties
- C22C2202/02—Magnetic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
図1は本発明の成形体の製造方法の第1のステップを説明した模式図であり、図2,3はその順で製造方法の第2のステップを説明した模式図であり、図4,5はその順で製造方法の第3のステップを説明した模式図である。
本発明者等は、成形体のダイのキャビティ面に塗布された黒鉛系潤滑剤の膜厚、製造された成形体の側面の黒鉛系粉末の層の膜厚、焼結体の側面の黒鉛系粉末の層の膜厚を比較する実験をおこなった。
本発明者等はさらに、本発明の製造方法の第3のステップにおける加熱時の加熱温度を種々変化させ、製造された成形体の酸素濃度増加量を測定する実験をおこなった。
Claims (2)
- ダイとダイの内部で摺動する上パンチおよび下パンチとから構成され、ダイと上パンチと下パンチでキャビティを形成する成形型において、ダイのキャビティに対向するキャビティ面に黒鉛系潤滑剤を塗布する第1のステップ、
下パンチのキャビティに対向するキャビティ面にバインダを含まない黒鉛系粉末を配設して黒鉛系粉末層を形成し、該黒鉛系粉末層の上に磁石用粉末を充填して磁石用粉末体を形成し、該磁石用粉末体の上にバインダを含まない黒鉛系粉末を配設して黒鉛系粉末層を形成する第2のステップ、
ダイのキャビティ面に塗布された黒鉛系潤滑剤および上下の黒鉛系粉末層で囲まれた磁石用粉末体を加熱しながら下パンチと上パンチで加圧成形して成形体を製造し、該成形体を成形型から取り出す第3のステップからなる成形体の製造方法。 - 第2のステップにおいて、加圧成形する際の圧力が50MPa以上に設定されている請求項1に記載の成形体の製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015138220A JP6424754B2 (ja) | 2015-07-10 | 2015-07-10 | 成形体の製造方法 |
US15/202,176 US10629370B2 (en) | 2015-07-10 | 2016-07-05 | Production method of compact |
CN201610538440.1A CN106340380B (zh) | 2015-07-10 | 2016-07-08 | 压实体的生产方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015138220A JP6424754B2 (ja) | 2015-07-10 | 2015-07-10 | 成形体の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2017022248A true JP2017022248A (ja) | 2017-01-26 |
JP6424754B2 JP6424754B2 (ja) | 2018-11-21 |
Family
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JP2015138220A Active JP6424754B2 (ja) | 2015-07-10 | 2015-07-10 | 成形体の製造方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US10629370B2 (ja) |
JP (1) | JP6424754B2 (ja) |
CN (1) | CN106340380B (ja) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6479305A (en) * | 1987-09-22 | 1989-03-24 | Sanyo Special Steel Co Ltd | Production of anisotropic mn-al-c magnet |
JPH10152702A (ja) * | 1996-11-21 | 1998-06-09 | Sumitomo Metal Ind Ltd | 磁石合金粉末のプレス成形方法と成形装置 |
JP2001240463A (ja) * | 2000-02-29 | 2001-09-04 | Chubu Electric Power Co Inc | クロミア焼結体とその製造方法 |
JP2001300790A (ja) * | 2000-02-17 | 2001-10-30 | Sumitomo Special Metals Co Ltd | 粉末成形体の製造方法および磁石の製造方法 |
US20010041146A1 (en) * | 2000-02-17 | 2001-11-15 | Atsushi Ogawa | Method for producing powder compact and method for manufacturing magnet |
JP2004342937A (ja) * | 2003-05-16 | 2004-12-02 | Hitachi Powdered Metals Co Ltd | 圧粉磁心の成形方法 |
JP2005112658A (ja) * | 2003-10-07 | 2005-04-28 | Chubu Electric Power Co Inc | 金属酸化物焼結体の製造方法、及び金属酸化物焼結体 |
JP2013241637A (ja) * | 2012-05-18 | 2013-12-05 | Ntn Corp | 圧粉体及び機械部品、並びに圧粉体の製造方法 |
JP2015531027A (ja) * | 2012-08-14 | 2015-10-29 | ナノジェスション インコーポレイテッド | 金属粉末からの部品の製造に潤滑複合材を使用する技術 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3739445A (en) * | 1970-12-29 | 1973-06-19 | Chromalloy American Corp | Powder metal magnetic pole piece |
JPH03241705A (ja) * | 1989-11-14 | 1991-10-28 | Hitachi Metals Ltd | 磁気異方性磁石及びその製造方法 |
US5641363A (en) * | 1993-12-27 | 1997-06-24 | Tdk Corporation | Sintered magnet and method for making |
US5682591A (en) * | 1994-08-24 | 1997-10-28 | Quebec Metal Powders Limited | Powder metallurgy apparatus and process using electrostatic die wall lubrication |
JPH09104902A (ja) | 1995-10-05 | 1997-04-22 | Shin Etsu Chem Co Ltd | 粉末成形方法 |
JP3818397B2 (ja) | 1995-10-27 | 2006-09-06 | 株式会社ダイドー電子 | 多重構造希土類金属磁石体の製造法 |
JPH09129465A (ja) * | 1995-10-30 | 1997-05-16 | Daido Steel Co Ltd | Nd−Fe−B系磁石の製造方法 |
JP2000144206A (ja) * | 1998-11-05 | 2000-05-26 | Kobe Steel Ltd | 粉末冶金用粉末の圧縮成形法 |
US8153053B2 (en) * | 2002-11-21 | 2012-04-10 | Diamet Corporation | Method for forming compact from powder and sintered product |
JP2014069187A (ja) * | 2012-09-27 | 2014-04-21 | Kobe Steel Ltd | プレス成形された金属材料の製造方法、および、熱交換器用部材の製造方法 |
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2015
- 2015-07-10 JP JP2015138220A patent/JP6424754B2/ja active Active
-
2016
- 2016-07-05 US US15/202,176 patent/US10629370B2/en not_active Expired - Fee Related
- 2016-07-08 CN CN201610538440.1A patent/CN106340380B/zh active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6479305A (en) * | 1987-09-22 | 1989-03-24 | Sanyo Special Steel Co Ltd | Production of anisotropic mn-al-c magnet |
JPH10152702A (ja) * | 1996-11-21 | 1998-06-09 | Sumitomo Metal Ind Ltd | 磁石合金粉末のプレス成形方法と成形装置 |
JP2001300790A (ja) * | 2000-02-17 | 2001-10-30 | Sumitomo Special Metals Co Ltd | 粉末成形体の製造方法および磁石の製造方法 |
US20010041146A1 (en) * | 2000-02-17 | 2001-11-15 | Atsushi Ogawa | Method for producing powder compact and method for manufacturing magnet |
JP2001240463A (ja) * | 2000-02-29 | 2001-09-04 | Chubu Electric Power Co Inc | クロミア焼結体とその製造方法 |
JP2004342937A (ja) * | 2003-05-16 | 2004-12-02 | Hitachi Powdered Metals Co Ltd | 圧粉磁心の成形方法 |
JP2005112658A (ja) * | 2003-10-07 | 2005-04-28 | Chubu Electric Power Co Inc | 金属酸化物焼結体の製造方法、及び金属酸化物焼結体 |
JP2013241637A (ja) * | 2012-05-18 | 2013-12-05 | Ntn Corp | 圧粉体及び機械部品、並びに圧粉体の製造方法 |
JP2015531027A (ja) * | 2012-08-14 | 2015-10-29 | ナノジェスション インコーポレイテッド | 金属粉末からの部品の製造に潤滑複合材を使用する技術 |
Also Published As
Publication number | Publication date |
---|---|
CN106340380B (zh) | 2020-07-31 |
JP6424754B2 (ja) | 2018-11-21 |
US10629370B2 (en) | 2020-04-21 |
CN106340380A (zh) | 2017-01-18 |
US20170011848A1 (en) | 2017-01-12 |
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