WO2014050284A1 - Machine rotative électrique - Google Patents

Machine rotative électrique Download PDF

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Publication number
WO2014050284A1
WO2014050284A1 PCT/JP2013/070272 JP2013070272W WO2014050284A1 WO 2014050284 A1 WO2014050284 A1 WO 2014050284A1 JP 2013070272 W JP2013070272 W JP 2013070272W WO 2014050284 A1 WO2014050284 A1 WO 2014050284A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductor material
coil
copper
rotating electrical
electrical machine
Prior art date
Application number
PCT/JP2013/070272
Other languages
English (en)
Japanese (ja)
Inventor
博司 春山
誉延 森
Original Assignee
株式会社日立製作所
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 株式会社日立製作所 filed Critical 株式会社日立製作所
Publication of WO2014050284A1 publication Critical patent/WO2014050284A1/fr

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/302—Cu as the principal constituent
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/02—Windings characterised by the conductor material
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the present invention relates to a rotating electrical machine such as a generator or a motor.
  • An object of the present invention is to provide a rotating electrical machine having a coil conductor material in which defects are unlikely to occur at a connection portion even when copper having a high oxygen content and containing cuprous oxide particles is used as the coil conductor material. .
  • a rotating electrical machine is a conductor composed of 0.0001 to 0.0500% oxygen, 0.0001 to 0.5000% silver, 0.0001 to 0.0200% magnesium, and the balance of inevitable impurities and copper in mass%
  • the material is characterized in that a stator coil and / or a rotor coil are formed.
  • the present invention it is possible to provide a rotating electrical machine having a coil conductor material in which defects are unlikely to occur at a connection portion even when copper having a high oxygen content and containing cuprous oxide particles is used as the coil conductor material. .
  • the present invention is to use copper having a limited composition range as a stator and a coil conductor material of a rotor in a rotating electric machine, and the conductor material is manufactured by welding, friction stir welding, or brazing and connecting. A rotating electrical machine using a coil.
  • oxygen is 0.0001 to 0.0500%
  • silver is 0.0001 to 0.5000%
  • magnesium is 0.0001 to 0.0200%
  • the balance is inevitable impurities and copper.
  • the above-mentioned conductor materials are fusion welding or friction stir welding (FSW) or phosphorus 4.8 to 6.0%, silver 9.0 to 15.5%, the balance is inevitable impurities And a rotating electrical machine using a coil produced by brazing and connecting with phosphor copper brazing made of copper.
  • FSW friction stir welding
  • Melt welding is applied when the conductor material oxygen is 0.0001 to 0.0050%, and friction stir welding and brazing are applied when the conductor material oxygen is 0.0001 to 0.050%.
  • the cross-sectional shape of the conductor material of the present invention may be any of a plate, strip, strip, bar, wire, tube and the like.
  • the present invention is a rotating electrical machine such as a generator or a motor that uses the connection structure described above.
  • the conductor material of the present invention has a small amount of sulfur (S) segregated at the grain boundary by forming a sulfide by adding magnesium, void formation at the grain boundary is suppressed even when a tensile stress is applied.
  • the creep strength at is high.
  • connection structure in which the conductor material of the present invention is brazed with phosphorous copper braze uses phosphorous copper braze for the connection of the conductor material, and therefore does not require flux. For this reason, the flux removal step can be omitted.
  • phosphorous copper solder is installed (placed) or supplied (inserted) into the conductor material connection structure, and an acetylene gas burner, propane gas burner, induction coil, TIG torch, etc. Accordingly, the phosphor copper braze is melted by heating at a temperature of 700 to 850 ° C. for 10 to 200 seconds, but since there is little heat input to the base material, local melting and solidification of the base material does not occur, so there is no fear of cracking.
  • connection structure in which the conductor material of the present invention is friction stir welded does not melt the base material, so there is no fear of cracking.
  • Oxygen (O) is inevitably contained in the material manufacturing process by 0.0001% or more. Oxygen is added in an amount of 0.0001% or more because it produces cuprous oxide particles in the conductor material and slows the steady creep (secondary creep) rate to increase the fracture life and increase the creep strength. However, oxygen is an element that decreases the conductivity of the conductor material. For this reason, the range of oxygen is 0.0001 to 0.0500%.
  • Silver (Ag) is unavoidably contained in the material manufacturing process by 0.0001% or more. Silver is dissolved in copper as a conductor material and slows the steady creep (secondary creep) speed to increase the fracture life and increase the creep strength, so 0.0001% or more is added. However, silver is an element that lowers the conductivity of the conductor material. For this reason, the range of silver is made 0.0001 to 0.5000%.
  • Magnesium (Mg) increases the creep strength by combining the sulfur (S) of the conductor material to form a sulfide and lowering the sulfur concentration segregated at the grain boundary to increase the bond strength at the grain boundary of the conductor material. It is an element, and 0.0001% or more is necessary. However, if it exceeds 0.0200%, the conductivity of the conductor material is lowered. Therefore, the magnesium range is 0.0001 to 0.0200%.
  • Rotating electrical machines such as generators and motors that use a connection structure in which the conductor material of the present invention is brazed with phosphor copper braze have high creep strength and no defects such as cracks in the base material. Is effective.
  • the conductor material having the chemical composition shown in Table 1 was manufactured as a wire rod having a thickness of 2 mm and a width of 20 mm by repeating steps of melting, casting, hot forging, annealing, cold working, and annealing. The final state is an annealed state at 600 ° C. for 1 hour. No. of the present invention. 3 to No. No. 8 conductor material and comparative material No. 1 and no.
  • a specimen having a length of 100 mm was taken from the conductor material No. 2, and the creep strength was evaluated by a method in which a nominal stress of 127 MPa was applied at a test temperature of 130 ° C. and the rupture time was measured.
  • Comparison material No. 2 is No.2. Since the oxygen content is higher than 1 and cuprous oxide particles are produced in the structure, the crystal grains become fine, the creep rupture time is long, and the creep strength is high. In the conductor material of the present invention, no. 3 to No. No. 5 contains no oxygen. 6-No. The creep rupture time is longer than 8, and the creep strength is high. In addition, the conductor material of the present invention has a high creep strength because the creep rupture time is longer than that of a comparative material containing substantially the same amount of oxygen but not containing magnesium.
  • FIG. 1 shows an example of a turbine generator as an example of the rotating electrical machine of the present invention.
  • the conductor material of the present invention is used for one rotor coil and two stator coils. Also, brazing, friction stir welding, or fusion welding is applied to the 3-rotor coil connection and the 4-stator coil connection. According to the present invention, a highly reliable rotating electrical machine can be obtained.
  • the rotating electrical machine using the coil conductor material and the connection structure of the present invention can be used for a generator driven by a diesel engine, wind power, gas turbine, steam turbine or the like, a motor driven by electricity, or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

L'invention concerne une machine rotative électrique ayant une matière conductrice de bobine dans laquelle un défaut est moins susceptible d'avoir lieu dans un partie de connexion même dans un cas où une matière de cuivre qui a une teneur en oxygène élevée et contient donc des particules d'oxyde de cuivre est utilisée dans la matière conductrice de bobine. L'invention concerne une machine rotative électrique caractérisée en ce que la bobine d'un stator et/ou d'un rotor est composée d'une matière conductrice qui contient, en % en masse, 0,0001 à 0,0500 % d'oxygène, 0,0001 à 0,5000 % d'argent et 0,0001 à 0,0200 % de magnésium avec l'équilibre étant des impuretés inévitables et du cuivre.
PCT/JP2013/070272 2012-09-27 2013-07-26 Machine rotative électrique WO2014050284A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012213378A JP2016020516A (ja) 2012-09-27 2012-09-27 回転電機
JP2012-213378 2012-09-27

Publications (1)

Publication Number Publication Date
WO2014050284A1 true WO2014050284A1 (fr) 2014-04-03

Family

ID=50387698

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/070272 WO2014050284A1 (fr) 2012-09-27 2013-07-26 Machine rotative électrique

Country Status (2)

Country Link
JP (1) JP2016020516A (fr)
WO (1) WO2014050284A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4036260A4 (fr) * 2019-09-27 2023-09-20 Mitsubishi Materials Corporation Alliage de cuivre pour dispositifs électroniques/électriques, barre plane en alliage de cuivre pour dispositifs électroniques/électriques, composant pour dispositifs électroniques/électriques, borne et barre omnibus
EP4067517A4 (fr) * 2019-11-29 2023-11-22 Mitsubishi Materials Corporation Alliage de cuivre, matériau en alliage de cuivre travaillé plastiquement, composant pour appareil électronique ou électrique, borne, barre omnibus, et substrat de dissipation de chaleur
EP4067518A4 (fr) * 2019-11-29 2023-11-29 Mitsubishi Materials Corporation Alliage de cuivre, matériau de travail en plastique d'alliage de cuivre, composant de dispositif électronique/électrique, borne, barre omnibus, carte de dissipation de chaleur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4116448A4 (fr) * 2020-03-06 2024-03-27 Mitsubishi Materials Corp Plaque de cuivre pur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03226242A (ja) * 1990-01-31 1991-10-07 Furukawa Electric Co Ltd:The 巻線用導体
JPH03226241A (ja) * 1990-01-31 1991-10-07 Furukawa Electric Co Ltd:The 巻線用導体
JPH06150722A (ja) * 1992-11-05 1994-05-31 Furukawa Electric Co Ltd:The 巻線用導体
JP2002129262A (ja) * 2000-10-24 2002-05-09 Hitachi Cable Ltd 極細銅合金線及びその製造方法
WO2010147018A1 (fr) * 2009-06-16 2010-12-23 株式会社オートネットワーク技術研究所 Conducteur de fil électrique et fil électrique pour automobile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03226242A (ja) * 1990-01-31 1991-10-07 Furukawa Electric Co Ltd:The 巻線用導体
JPH03226241A (ja) * 1990-01-31 1991-10-07 Furukawa Electric Co Ltd:The 巻線用導体
JPH06150722A (ja) * 1992-11-05 1994-05-31 Furukawa Electric Co Ltd:The 巻線用導体
JP2002129262A (ja) * 2000-10-24 2002-05-09 Hitachi Cable Ltd 極細銅合金線及びその製造方法
WO2010147018A1 (fr) * 2009-06-16 2010-12-23 株式会社オートネットワーク技術研究所 Conducteur de fil électrique et fil électrique pour automobile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4036260A4 (fr) * 2019-09-27 2023-09-20 Mitsubishi Materials Corporation Alliage de cuivre pour dispositifs électroniques/électriques, barre plane en alliage de cuivre pour dispositifs électroniques/électriques, composant pour dispositifs électroniques/électriques, borne et barre omnibus
EP4067517A4 (fr) * 2019-11-29 2023-11-22 Mitsubishi Materials Corporation Alliage de cuivre, matériau en alliage de cuivre travaillé plastiquement, composant pour appareil électronique ou électrique, borne, barre omnibus, et substrat de dissipation de chaleur
EP4067518A4 (fr) * 2019-11-29 2023-11-29 Mitsubishi Materials Corporation Alliage de cuivre, matériau de travail en plastique d'alliage de cuivre, composant de dispositif électronique/électrique, borne, barre omnibus, carte de dissipation de chaleur

Also Published As

Publication number Publication date
JP2016020516A (ja) 2016-02-04

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