EP0885445B1 - Verfahren zum herstellen von bandkernbändern sowie induktives bauelement mit bandkern - Google Patents

Verfahren zum herstellen von bandkernbändern sowie induktives bauelement mit bandkern Download PDF

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Publication number
EP0885445B1
EP0885445B1 EP97948723A EP97948723A EP0885445B1 EP 0885445 B1 EP0885445 B1 EP 0885445B1 EP 97948723 A EP97948723 A EP 97948723A EP 97948723 A EP97948723 A EP 97948723A EP 0885445 B1 EP0885445 B1 EP 0885445B1
Authority
EP
European Patent Office
Prior art keywords
strip
amorphous ferromagnetic
alloy
wound core
heat
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.)
Expired - Lifetime
Application number
EP97948723A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0885445A1 (de
Inventor
Giselher Herzer
Kurt Emmerich
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Vacuumschmelze GmbH and Co KG
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 Vacuumschmelze GmbH and Co KG filed Critical Vacuumschmelze GmbH and Co KG
Publication of EP0885445A1 publication Critical patent/EP0885445A1/de
Application granted granted Critical
Publication of EP0885445B1 publication Critical patent/EP0885445B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15316—Amorphous metallic alloys, e.g. glassy metals based on Co
    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15341—Preparation processes therefor
    • 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
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
    • H01F41/0226—Manufacturing of magnetic circuits made from strip(s) or ribbon(s) from amorphous ribbons
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling

Definitions

  • the invention relates to an inductive component with a Band core made of an amorphous ferromagnetic alloy is wound, as well as a manufacturing process for core tapes made of amorphous ferromagnetic material.
  • amorphous ferromagnetic Alloys are subjected to a heat treatment. Typically, these are in a magnetic field annealed to selectively set a flat B-H loop.
  • DE 33 24 729 C2 describes a process for the production an amorphous magnetic alloy with high permeability known in which a band from a amorphous magnetic cobalt / base alloy, the one Has a molar proportion of iron of 5%, is produced, and where the amorphous magnetic tape in a magnetic field transverse to the belt direction in the course of a heat treatment is subjected.
  • the invention is therefore based on the object of this Manufacturing process for core tapes made of amorphous develop ferromagnetic material so that with low cost, economical and energy-saving strip cores, in particular to toroidal cores, and manufactured therefrom inductive components can be produced in which much higher permeabilities and thereby improved magnetic properties can be achieved.
  • the manufacturing method according to the invention can be used perform the lowest possible energy. It can be on this way ductile, amorphous core tapes with flat B-H loops produce that very much into their saturation range are strongly linear, and a permeability range have between about 2000 and 15000. Due to the Possibility of a precise adjustment of the magnetostriction tape cores, especially toroidal tape cores, be produced with a winding diameter d ⁇ 10mm exhibit without it becoming a noteworthy Impairment of the magnetic properties comes.
  • the continuous heat treatment does not require Shielding gas, in particular the exposure to air is even from Advantage, because the thin oxidation layer on the Band core tapes the required electrical Band layer insulation supported.
  • Very good core tapes can be found at Achieve throughput speeds that are set in this way. That the amorphous ferromagnetic tape for one bath treatment time t ⁇ 30 sec to one temperature 300 ° C ⁇ T ⁇ 400 ° C is heated.
  • the proportion of iron and / or manganese in the alloy is set such that the amorphous ferromagnetic band has a saturation magnetostriction ⁇ s 0,1 0.1 ppm, preferably ⁇ s 0,0 0.05 ppm, after the heat treatment.
  • the band core is therefore wound from a ductile, heat-treated band core band made of an amorphous ferromagnetic alloy, the amorphous ferromagnetic alloy having a saturation magnetostriction ⁇ s ⁇ 0.1 ppm and a flat BH loop that extends into the range of Saturation is as linear as possible.
  • the amorphous ferromagnetic alloy is a cobalt-based alloy which contains molar proportions of iron and / or manganese between 1 and 10 atom% of the alloy.
  • the tape core tape is therefore heat-treated before winding, and the tape cores can be easily wound due to the ductility achieved.
  • the tape cores can have an average diameter d ⁇ 50mm, yes even have an average diameter d ⁇ 10mm.
  • inductive components can be produced that Show toroidal cores.
  • the amorphous ferromagnetic tapes were made from one Molten poured by rapid solidification and then in one approx. 40cm long cross-country furnace in a pass with a Throughput speed of 1.6m / minute at different Temperatures heat treated. That during the heat treatment perpendicular to the belt direction and in the belt plane Magnetic field of approximately 159-200 A / m was generated by a Permanent magnet yoke of about 40cm in length, which is in the continuous furnace.
  • Figure 1 shows the typical temperature profile of the Continuous furnace.
  • the length of the homogeneous temperature zone was approx. 15 to 20cm, which means the above throughput speed an effective heat treatment time of approx. 7 seconds equivalent.
  • Throughput speed increased to approximately 10 to 20 m / minute become.
  • the saturation magnetostriction ⁇ s and the BH loop in the stretched state were measured on the cross-field-treated band.
  • the band heat-treated at 350 ° C. became of the tape core tapes with the dimensions 22x16x6mm and 12x8x6mm wound to check to what extent the winding tensions the properties of the material influence.
  • the ductility of the heat-treated material determined by kink and tear tests. As in Figure 2 is set at the selected heat treatment time embrittlement only at relatively high levels Heat treatment temperatures around 380 ° C. So that can An elevated heat treatment temperature is easily selected become, what to a sufficient stress relaxation and a fast kinetics of the setting of the induced Leads to anisotropy.
  • Figure 5 shows the B-H loops from the heat-treated tape core tape wound coil tape cores.
  • the Amplitude permeability of the toroidal cores is shown in FIG. 6 shown.
  • ⁇ s In order to avoid the influence of the winding tensions, it is therefore important to adjust the saturation magnetostriction present after the heat treatment to zero as well as possible. For this purpose, a certain, slightly negative value of ⁇ s must be set in the production state, which is alloy-specific for the given heat treatment parameters.
  • FIG. 7 shows the course of the change in Magnetostriction after the heat treatment for the two examined alloys.
  • the magnetostriction adjustment must be carried out more precisely than with the material that is only heat-treated after the winding of the toroidal cores. It is optimal that after the heat treatment there is a magnetostriction -2x10 -8 ⁇ s ⁇ 2x10 -8 .
  • toroidal tape cores with diameters down to less than 10mm and a permeability level of around 2000 to 15000 can be produced with the strip core tapes that are heat-treated in the transverse field.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Soft Magnetic Materials (AREA)
EP97948723A 1996-12-20 1997-11-06 Verfahren zum herstellen von bandkernbändern sowie induktives bauelement mit bandkern Expired - Lifetime EP0885445B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19653428 1996-12-20
DE19653428A DE19653428C1 (de) 1996-12-20 1996-12-20 Verfahren zum Herstellen von Bandkernbändern sowie induktives Bauelement mit Bandkern
PCT/DE1997/002585 WO1998028758A1 (de) 1996-12-20 1997-11-06 Verfahren zum herstellen von bandkernbändern sowie induktives bauelement mit bandkern

Publications (2)

Publication Number Publication Date
EP0885445A1 EP0885445A1 (de) 1998-12-23
EP0885445B1 true EP0885445B1 (de) 2002-03-20

Family

ID=7815631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97948723A Expired - Lifetime EP0885445B1 (de) 1996-12-20 1997-11-06 Verfahren zum herstellen von bandkernbändern sowie induktives bauelement mit bandkern

Country Status (6)

Country Link
US (1) US6171408B1 (ja)
EP (1) EP0885445B1 (ja)
JP (1) JP2000505953A (ja)
CN (1) CN1212073A (ja)
DE (2) DE19653428C1 (ja)
WO (1) WO1998028758A1 (ja)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3596291B2 (ja) * 1998-07-07 2004-12-02 セイコーエプソン株式会社 投写型表示装置
JP4755340B2 (ja) * 1998-09-17 2011-08-24 ヴァキュームシュメルツェ ゲーエムベーハー ウント コンパニー カーゲー 直流電流公差を有する変流器
US6580347B1 (en) * 1998-11-13 2003-06-17 Vacuumschmelze Gmbh Magnetic core that is suitable for use in a current transformer, method for the production of a magnetic core and current transformer with a magnetic core
FR2802293B1 (fr) * 1999-12-09 2002-03-01 Air Liquide Appareil et procede de separation par distillation cryogenique
DE10134056B8 (de) * 2001-07-13 2014-05-28 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung von nanokristallinen Magnetkernen sowie Vorrichtung zur Durchführung des Verfahrens
SE523321C2 (sv) * 2002-06-20 2004-04-13 Covial Device Ab Sätt och anordning för avkänning och indikering av akustisk emission
DE102005034486A1 (de) * 2005-07-20 2007-02-01 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung eines weichmagnetischen Kerns für Generatoren sowie Generator mit einem derartigen Kern
DE102005045911B4 (de) * 2005-09-26 2012-04-12 Vacuumschmelze Gmbh & Co. Kg Magnetkern, Magnetanodnung und Verfahren zur Herstellung des Magnetkerns
WO2008051623A2 (en) * 2006-02-21 2008-05-02 Carnegie Mellon University Soft magnetic alloy and uses thereof
EP1918407B1 (de) 2006-10-30 2008-12-24 Vacuumschmelze GmbH & Co. KG Weichmagnetische Legierung auf Eisen-Kobalt-Basis sowie Verfahren zu deren Herstellung
US9057115B2 (en) * 2007-07-27 2015-06-16 Vacuumschmelze Gmbh & Co. Kg Soft magnetic iron-cobalt-based alloy and process for manufacturing it
US8012270B2 (en) 2007-07-27 2011-09-06 Vacuumschmelze Gmbh & Co. Kg Soft magnetic iron/cobalt/chromium-based alloy and process for manufacturing it
CN104662623B (zh) * 2012-04-16 2017-05-17 真空融化两合公司 生产用于环带芯的软磁条状材料的方法和装置以及环带芯
DE102015218423A1 (de) * 2014-09-25 2016-03-31 Continental Teves Ag & Co. Ohg Verfahren zum Herstellen eines magnetischen Kernelements mit einer Haltefolie
CN105861908B (zh) * 2016-06-26 2017-10-17 中国计量大学 一种永磁材料的制备方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57177507A (en) * 1981-04-24 1982-11-01 Hitachi Metals Ltd Heat treatment of amorphous material
JPS599157A (ja) * 1982-07-08 1984-01-18 Sony Corp 非晶質磁性合金の熱処理方法
US4769091A (en) 1985-08-20 1988-09-06 Hitachi Metals Ltd. Magnetic core
US4668309A (en) * 1986-06-09 1987-05-26 Allied Corporation Rapid magnetic annealing of amorphous metal in molten tin
US5256211A (en) * 1991-12-19 1993-10-26 Allied Signal Rapid annealing method using shorted secondary technique
US5568125A (en) * 1994-06-30 1996-10-22 Sensormatic Electronics Corporation Two-stage annealing process for amorphous ribbon used in an EAS marker
US5676767A (en) 1994-06-30 1997-10-14 Sensormatic Electronics Corporation Continuous process and reel-to-reel transport apparatus for transverse magnetic field annealing of amorphous material used in an EAS marker
DE19533362A1 (de) * 1995-09-09 1997-03-13 Vacuumschmelze Gmbh Längsgestreckter Körper als Sicherungsetikett für elektromagnetische Diebstahlsicherungssysteme

Also Published As

Publication number Publication date
DE59706683D1 (de) 2002-04-25
DE19653428C1 (de) 1998-03-26
CN1212073A (zh) 1999-03-24
EP0885445A1 (de) 1998-12-23
WO1998028758A1 (de) 1998-07-02
US6171408B1 (en) 2001-01-09
JP2000505953A (ja) 2000-05-16

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