DE646937T1 - Verfahren zur Dauermagnet-Herstellung und Apparat zur Formierung eines grünen Kompakts. - Google Patents

Verfahren zur Dauermagnet-Herstellung und Apparat zur Formierung eines grünen Kompakts.

Info

Publication number
DE646937T1
DE646937T1 DE0646937T DE94116105T DE646937T1 DE 646937 T1 DE646937 T1 DE 646937T1 DE 0646937 T DE0646937 T DE 0646937T DE 94116105 T DE94116105 T DE 94116105T DE 646937 T1 DE646937 T1 DE 646937T1
Authority
DE
Germany
Prior art keywords
green compact
rubber mold
producing
rubber
manufacturing
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.)
Pending
Application number
DE0646937T
Other languages
English (en)
Inventor
Hiroshi Nagata
Masato Sagawa
Hiroo Shirai
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.)
Intermetallics Co Ltd
Original Assignee
Intermetallics Co Ltd
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
Priority claimed from JP3040861A external-priority patent/JPH0744121B2/ja
Priority claimed from JP5948791A external-priority patent/JPH08132298A/ja
Priority claimed from JP16934691A external-priority patent/JPH06188136A/ja
Application filed by Intermetallics Co Ltd filed Critical Intermetallics Co Ltd
Publication of DE646937T1 publication Critical patent/DE646937T1/de
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
    • 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
    • B22F3/003—Apparatus, e.g. furnaces
    • 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
    • B22F3/004—Filling molds with 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
    • 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
    • B22F3/1208—Containers or coating used therefor
    • B22F3/1216—Container composition
    • B22F3/1233—Organic material
    • 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
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/008—Applying a magnetic field to the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/025—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space whereby the material is transferred into the press chamber by relative movement between a ram and the press chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/027—Particular press methods or systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/022—Moulds for compacting material in powder, granular of pasta form
    • B30B15/024—Moulds for compacting material in powder, granular of pasta form using elastic mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • 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
    • 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
    • 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
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
    • B29C2043/046—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds travelling between different stations, e.g. feeding, moulding, curing stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3488—Feeding the material to the mould or the compression means uniformly distributed into the mould
    • B29C2043/3494—Feeding the material to the mould or the compression means uniformly distributed into the mould using vibrating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/3642—Bags, bleeder sheets or cauls for isostatic pressing
    • B29C2043/3652—Elastic moulds or mould parts, e.g. cores or inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C2043/3676—Moulds for making articles of definite length, i.e. discrete articles moulds mounted on rotating supporting constuctions
    • B29C2043/3689—Moulds for making articles of definite length, i.e. discrete articles moulds mounted on rotating supporting constuctions on a support table, e.g. flat disk-like tables having moulds on the periphery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Hard Magnetic Materials (AREA)

Claims (12)

94 116 105.1 Patentansprüche
1) Verfahren zur Herstellung eines Magneten, welches umfaßt: Einfüllen einer Preßmasse (15), die Magnetpulver enthält, in eine Gummiform (10), bei der zumindest der Seitenabschnitt (10s) aus Gummi besteht, innerhalb oder außerhalb einer Formstanzmaschine, die mit einem oberen Stanzstempel (la), einem Filter (34) und einem Wasserabsaugkanal (36) versehen ist, der im oberen Stanzstempel (la) ausgebildet ist; Anordnen des Filters (34) zwischen dem oberen Stanz-Stempel (la) und dem offenen oberen Abschnitt der Gummiform (10); und Pressen der Gummiform (10) und der Preßmasse (15), wodurch das Lösungsmittel durch den Filter (34) und den Wasserabsaugkanal (36) abgesaugt wird.
2) Verfahren zur Herstellung eines Magneten nach Anspruch 1, wobei die Innenseite der Gummiform (10) vor oder nach dem Einfüllen der Preßmasse einer Entgasungsbehandlung im Vakuum (13 2) unterzogen wird.
3) Herstellungsverfahren nach Anspruch 1 oder Anspruch 2, wobei die Gummiform (10) mindestens eine Oberseite und eine Unterseite umfaßt, wobei zumindest die Oberseite oder die Unterseite eine Dicke (t, Einheit mm) aufweist, die durch t<16h/D definiert wird (h ist die Dicke des Grünlings und D ist die positive Quadratwurzel der Querschnittsfläche des Grünlings und D 2h).
4) Herstellungsverfahren nach Anspruch 1 oder 2, wobei die Gummiform (10) mindestens eine Oberseite und eine Unterseite umfaßt, wobei zumindest die Oberseite oder die Unterseite eine Dicke (t, Einheit mm) aufweist, die durch t>16h/D definiert wird (h ist die Dicke des Grünlings und D ist die
positive Quadratwurzel der Querschnittsfläche des Grünlings und 2D h).
5) Herstellungsverfahren nach Anspruch 1 oder Anspruch 2, wobei die Gummiform (10) einen Dorn (10m) umfaßt, der härter als die Außenabschnitte (10s,k) der Gummiform (10) ist.
6) Herstellungsverfahren nach einem der vorstehenden Ansprüche, wobei die Herstellung des Grünlings auf einer Kreisfläche (2a) erfolgt, die gedreht wird, und worin die Gummiform (10) befestigt ist.
7) Vorrichtung zur Herstellung eines Grünlings, welche umfaßt: eine Einrichtung zum Einfüllen mit hoher Dichte, die eine Aufgabeeinrichtung (42) zur Zufuhr des Pulvers in die Gummiformen (10) oder einer Ladeeinrichtung (125) des vorläufig gepreßten Pulvers und eine Einrichtung (41, 121, 212, 225, 228, 231) zur Erhöhung der Fülldichte des Pulvers umfaßt; eine Formstanzmaschine; und eine Einrichtung (64) zur Entnahme des Grünlings aus jeder Gummiform (10).
8) Vorrichtung zur Hertstellung eines Grünlings nach Anspruch 7, die außerdem einen Magnetfeldgenerator (4a) umfaßt.
9) Vorrichtung zur Herstellung eines Grünlings nach Anspruch 7 oder Anspruch 8, die außerdem eine Kammer umfaßt, die im Inneren eine Inertgasatmosphäre aufweist, und wobei die Teile der Vorrichtung darin angeordnet sind.
10) Vorrichtung zur Herstellung eines Grünlings nach Anspruch 7 oder Anspruch 8, die außerdem eine Kreisfläche (2a) umfaßt, die gedreht wird und in der die Gummiformen bestigt sind, und entlang der die Teile der Vorrichtung nacheinander angeordnet sind.
11) Vorrichtung zur Herstellung eines Grünlings nach Anspruch 7 oder Anspruch 8, die außerdem umfaßt: einen geraden Durchgang zum getrennten Anordnen der Teile der Vorrichtung entlang dieses Durchganges, eine Schiene und eine sich hin- und herbewegende Einrichtung zur Hin- und Herbewegung einer Palette (202), auf der die Gummiform lösbar befestigt ist.
12) Vorrichtung zur Herstellung eines Grünlings nach Anspruch 7 oder Anspruch 8, wobei die Teile der Vorrichtung an jedem Scheitelbereich oder Seitenbereich der Einrichtung (232) zum Halten der Form angeordnet sind, die die Konfiguration eines gleichseitigen oder schiefwinkligen Polygons aufweist, und die Paletten (202), die die Gummiformen tragen, außerdem in einer Linearbewegung zwischen den benachbarten Stellen {A,B,C und D) der Teile befördert werden.
DE0646937T 1990-11-30 1991-11-28 Verfahren zur Dauermagnet-Herstellung und Apparat zur Formierung eines grünen Kompakts. Pending DE646937T1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP33004890 1990-11-30
JP3040861A JPH0744121B2 (ja) 1990-11-30 1991-02-14 永久磁石の製造方法、製造装置及び磁界中配向成形用ゴムモールド
JP5948791A JPH08132298A (ja) 1991-03-01 1991-03-01 焼結用圧粉体の製造方法、製造装置、ゴムモールドならびに焼結体の製造方法
JP16934691A JPH06188136A (ja) 1991-06-14 1991-06-14 永久磁石の製造方法

Publications (1)

Publication Number Publication Date
DE646937T1 true DE646937T1 (de) 1995-11-30

Family

ID=27460962

Family Applications (3)

Application Number Title Priority Date Filing Date
DE69127557T Expired - Fee Related DE69127557T2 (de) 1990-11-30 1991-11-28 Verfahren zur Herstellung eines Permanentmagneten und Vorrichtung zur Herstellung eines Grünlings
DE0646937T Pending DE646937T1 (de) 1990-11-30 1991-11-28 Verfahren zur Dauermagnet-Herstellung und Apparat zur Formierung eines grünen Kompakts.
DE69119557T Expired - Fee Related DE69119557T2 (de) 1990-11-30 1991-11-28 Verfahren und Apparat zur Dauermagnet-Herstellung durch Formieren eines grünen und gesinterten Kompakts

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69127557T Expired - Fee Related DE69127557T2 (de) 1990-11-30 1991-11-28 Verfahren zur Herstellung eines Permanentmagneten und Vorrichtung zur Herstellung eines Grünlings

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69119557T Expired - Fee Related DE69119557T2 (de) 1990-11-30 1991-11-28 Verfahren und Apparat zur Dauermagnet-Herstellung durch Formieren eines grünen und gesinterten Kompakts

Country Status (6)

Country Link
US (1) US5250255A (de)
EP (2) EP0646937B1 (de)
AT (2) ATE157806T1 (de)
CA (1) CA2056690C (de)
DE (3) DE69127557T2 (de)
ES (2) ES2072247T1 (de)

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DE69119557D1 (de) 1996-06-20
CA2056690A1 (en) 1992-05-31
ATE138222T1 (de) 1996-06-15
ATE157806T1 (de) 1997-09-15
EP0646937B1 (de) 1997-09-03
DE69127557T2 (de) 1998-01-08
CA2056690C (en) 1997-01-21
DE69119557T2 (de) 1996-10-17
EP0646937A1 (de) 1995-04-05
EP0488334A3 (en) 1993-03-31
DE69127557D1 (de) 1997-10-09
ES2072247T1 (es) 1995-07-16
US5250255A (en) 1993-10-05
EP0488334A2 (de) 1992-06-03
EP0488334B1 (de) 1996-05-15
ES2087214T3 (es) 1996-07-16

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