ES2543652B1 - Method for powder metallurgy manufacturing - Google Patents

Method for powder metallurgy manufacturing Download PDF

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Publication number
ES2543652B1
ES2543652B1 ES201400015A ES201400015A ES2543652B1 ES 2543652 B1 ES2543652 B1 ES 2543652B1 ES 201400015 A ES201400015 A ES 201400015A ES 201400015 A ES201400015 A ES 201400015A ES 2543652 B1 ES2543652 B1 ES 2543652B1
Authority
ES
Spain
Prior art keywords
sintering
stages
called electric
manufacture
magnets
Prior art date
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.)
Active
Application number
ES201400015A
Other languages
Spanish (es)
Other versions
ES2543652A1 (en
Inventor
Juan Manuel Montes Martos
Jesús CINTAS FÍSICO
Francisco GÓMEZ CUEVAS
Fátima TERNERO FERNÁNDEZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universidad de Huelva
Original Assignee
Universidad de Sevilla
Universidad de Huelva
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Universidad de Sevilla, Universidad de Huelva filed Critical Universidad de Sevilla
Priority to ES201400015A priority Critical patent/ES2543652B1/en
Priority to EP14876586.0A priority patent/EP3093857A4/en
Priority to PCT/ES2014/000223 priority patent/WO2015101682A1/en
Publication of ES2543652A1 publication Critical patent/ES2543652A1/en
Application granted granted Critical
Publication of ES2543652B1 publication Critical patent/ES2543652B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
    • 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
    • B22F3/10—Sintering only
    • B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/007—Alloys based on nickel or cobalt with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/07—Alloys based on nickel or cobalt based on cobalt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • 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
    • H01F41/0273—Imparting anisotropy
    • 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
    • B22F3/10—Sintering only
    • B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • B22F2003/1051—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding by electric discharge
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • 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
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2200/00—Crystalline structure
    • C22C2200/02—Amorphous
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)

Abstract

La presente patente tiene por objeto presentar un nuevo método para la fabricación pulvimetalúrgica de imanes (aplicable especialmente a la fabricación de imanes que contienen tierras raras). Lo novedoso del método reside en el empleo de alguna modalidad de consolidación eléctrica (como la denominada sinterización por resistencia eléctrica, S.R.E., o la denominada consolidación por descarga eléctrica, C.D.E., pero no necesariamente una de éstas) en sustitución de la ruta convencional de prensado en frío + sinterizado, empleada habitualmente. Se logra con ello: (1) aunar las etapas de compactación/sinterizado, acortando significativamente su duración y reduciendo la magnitud de las presiones de trabajo, (2) llevar a cabo las etapas de alineamiento magnético, prensado/sinterizado, tratamiento térmico y magnetización en una misma matriz, y (3) hacer innecesario el empleo de atmósferas protectoras durante el proceso de sinterizado.The purpose of this patent is to present a new method for the powder metallurgical manufacture of magnets (especially applicable to the manufacture of magnets containing rare earths). The novelty of the method lies in the use of some form of electrical consolidation (such as the so-called electric resistance sintering, SRE, or the so-called electric shock consolidation, CDE, but not necessarily one of these) instead of the conventional pressing path cold + sintered, usually used. This is achieved by: (1) combining the stages of compaction / sintering, significantly shortening its duration and reducing the magnitude of the working pressures, (2) carrying out the stages of magnetic alignment, pressing / sintering, heat treatment and magnetization in the same matrix, and (3) make unnecessary the use of protective atmospheres during the sintering process.

Description

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Claims (1)

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ES201400015A 2013-12-30 2013-12-30 Method for powder metallurgy manufacturing Active ES2543652B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES201400015A ES2543652B1 (en) 2013-12-30 2013-12-30 Method for powder metallurgy manufacturing
EP14876586.0A EP3093857A4 (en) 2013-12-30 2014-12-29 Method for producing magnets using powder metallurgy
PCT/ES2014/000223 WO2015101682A1 (en) 2013-12-30 2014-12-29 Method for producing magnets using powder metallurgy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201400015A ES2543652B1 (en) 2013-12-30 2013-12-30 Method for powder metallurgy manufacturing

Publications (2)

Publication Number Publication Date
ES2543652A1 ES2543652A1 (en) 2015-08-20
ES2543652B1 true ES2543652B1 (en) 2016-03-01

Family

ID=53493298

Family Applications (1)

Application Number Title Priority Date Filing Date
ES201400015A Active ES2543652B1 (en) 2013-12-30 2013-12-30 Method for powder metallurgy manufacturing

Country Status (3)

Country Link
EP (1) EP3093857A4 (en)
ES (1) ES2543652B1 (en)
WO (1) WO2015101682A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106098325A (en) * 2016-08-11 2016-11-09 吴江变压器有限公司 A kind of epoxy pouring type dry transformer high-tension coil pressure regulation attachment structure
EP3862110A1 (en) * 2020-02-07 2021-08-11 EPoS S.r.L. Composite magnetic materials and method of manufacturing the same
CN115502401A (en) * 2022-08-29 2022-12-23 合肥工业大学 Auxiliary sintering device for powder metallurgy field with coupled heating

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54104408A (en) * 1978-02-03 1979-08-16 Namiki Precision Jewel Co Ltd Rare earthhcobalt base permanent magnet alloy
US4369075A (en) * 1979-04-18 1983-01-18 Namiki Precision Jewel Co., Ltd. Method of manufacturing permanent magnet alloys
GB8403751D0 (en) * 1984-02-13 1984-03-14 Sherritt Gordon Mines Ltd Producing sm2 co17 alloy
US5382303A (en) * 1992-04-13 1995-01-17 Sps Technologies, Inc. Permanent magnets and methods for their fabrication
EP2527062B1 (en) * 2004-06-30 2014-06-04 TDK Corporation Method for producing a rare earth sintered magnet
WO2011125588A1 (en) * 2010-03-31 2011-10-13 日東電工株式会社 Permanent magnet and manufacturing method for permanent magnet
WO2012159096A2 (en) * 2011-05-18 2012-11-22 The Regents Of The University Of California Nanostructured high-strength permanent magnets
US20130266473A1 (en) * 2012-04-05 2013-10-10 GM Global Technology Operations LLC Method of Producing Sintered Magnets with Controlled Structures and Composition Distribution

Also Published As

Publication number Publication date
WO2015101682A1 (en) 2015-07-09
ES2543652A1 (en) 2015-08-20
EP3093857A4 (en) 2017-08-30
EP3093857A1 (en) 2016-11-16

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