EP0023362A1 - Procédé pour la fabrication d'un alliage de cuivre électriquement conducteur - Google Patents

Procédé pour la fabrication d'un alliage de cuivre électriquement conducteur Download PDF

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Publication number
EP0023362A1
EP0023362A1 EP80104479A EP80104479A EP0023362A1 EP 0023362 A1 EP0023362 A1 EP 0023362A1 EP 80104479 A EP80104479 A EP 80104479A EP 80104479 A EP80104479 A EP 80104479A EP 0023362 A1 EP0023362 A1 EP 0023362A1
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EP
European Patent Office
Prior art keywords
copper alloy
copper
weight
alloy material
zirconium
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.)
Granted
Application number
EP80104479A
Other languages
German (de)
English (en)
Other versions
EP0023362B1 (fr
EP0023362B2 (fr
Inventor
Seika Matidori
Masato Sakai
Teshima Koichi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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.)
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26437313&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0023362(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP9606779A external-priority patent/JPS5620136A/ja
Priority claimed from JP9988479A external-priority patent/JPS5625940A/ja
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Publication of EP0023362A1 publication Critical patent/EP0023362A1/fr
Publication of EP0023362B1 publication Critical patent/EP0023362B1/fr
Application granted granted Critical
Publication of EP0023362B2 publication Critical patent/EP0023362B2/fr
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/026—Alloys based on copper
    • 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

Definitions

  • the present invention relates to an electrically conductive copper alloy material having both electrical conductivity and mechanical strength, and a method for manufacturing the same.
  • the primary object of the present invention is therefore to provide a copper alloy material which eliminates the problems of the conventional copper alloy member and which has an electrical conductivity, mechanical strength and suitability for mass production compatible with use an electric wires.
  • the present invention provides an electrically conductive copper alloy material whose grain size number is not less than 7 as defined by JIS G 0551.
  • the present invention further provides a method for manufacturing an electrically conductive copper alloy material which is characterized by making an ingot, hot-working it to a wire of suitable diameter, and, without subjecting it to the solution treatment, cold-working it so as to provide a grain size number of not less than 7 as defined by JIS G 0551.
  • the most important point of the present invention is the finding of a copper alloy material having a suitable electrical conductivity and mechanical strength by obtaining a grain size number of not less than 7, preferably 8 - 9 as defined by JIS G 0551 by preferably repeatedly annealing and working the copper alloy material without the solution treatment which has heretofore required a precipitation hardening treatment.
  • the suitability for mass production obtained by eliminating the step of the solution treatment is also industrially advantageous.
  • the crystal grain size as defined by JIS G 0551 is calculated as follows.
  • Making an ingot can be performed by general vacuum melting or atmospheric melting using a carbon melting pot.
  • the base metal material preferably comprises a material containing little oxygen, such as a return material or oxygen free copper.
  • Quenching in this case means fast cooling from a ' temperature of 1,200 - 1,250°C at which the additives are added to a casting temperature of 1,100 - 1,150°C within a period of only 1 - 2 minutes.
  • This method which adopts a carbon melting pot, is especially advantageous for a chrome-copper alloy, a zirconium-copper alloy, a chrome-zirconium-copper alloy and so on.
  • Chrome is preferably added in the form of a base alloy of chrome-copper alloy. This is because the addition of metallic chrome tends to cause segregation due to a difference in melting points and small solid solubility.
  • Zirconium may be added only for deoxidation or for inclusion in the alloy.
  • Zirconium to be included in the alloy is added separately from zirconium for deoxidation. That is, after sufficiently deoxidizing with zirconium, more zirconium to be included in the alloy may be added.
  • the addition of Zr is in general preferably performed at a temperature higher than the melting point of the copper alloy.
  • zirconium is added for deoxidation and more zirconium to be included in the alloy is added. This is because Zr is easily oxidized, and the addition of Zr is thus difficult before sufficiently deoxidizing the electrolytic copper.
  • Special components such as silicon, germanium, magnesium, boron and so on are added after the deoxidation by zirconium as needed. This is because addition of these elements after sufficient deoxidation results in a better yield. Boron is added simultaneously with chrome as a base metal.
  • the ingot making method of the Cr-Zr-Cu alloy may be summarized as follows:
  • the features of the copper alloy melted by this method are found to be the same as those of a copper alloy obtained by a conventional vacuum melting method, and have the following advantages.
  • the atmospheric melting method which uses a carbon melting pot is advantageous in that it does not require special equipment as in the vacuum melting method and the manufacturing cost may be made less.
  • This atmospheric melting method may be advantageously applicable particularly to alloys such as 0.05-1.5% Cr-Cu, preferably 0.3-1.5% Cr-Cu, more preferably 0.3-0.9% Cr-Cu; 0.05-0.5% Zr-Cu, preferably J 0.1-0.5% Zr-Cu, more preferably 0.1-0.4% Zr-Cu; 0.3-1% Cr-Cu, 0.1-0.5% Zr-Cu; and Cu alloys containing further 0.005-0.1%, preferably 0.01-0.03% (all by weight) of silicon, germanium, boron or magnesium in addition to above ranges of Cr and Zr.
  • alloys such as 0.05-1.5% Cr-Cu, preferably 0.3-1.5% Cr-Cu, more preferably 0.3-0.9% Cr-Cu; 0.05-0.5% Zr-Cu, preferably J 0.1-0.5% Zr-Cu, more preferably 0.1-0.4% Zr-Cu; 0.3-1% Cr-Cu, 0.1-0.5% Zr-Cu; and Cu alloys containing further 0.005-0.1%, preferably 0.01-0.03% (
  • the copper alloy material is repeatedly annealed and cold-worked after hot-working in order to obtain optimum results.
  • the alloy of the above composition was hot-worked at a temperature of 700 - 850°C by the atmospheric melting method using a carbon melting pot so as to obtain a wire of 7 - 10 mm in diameter. Then thus obtained wire was cold-worked after acid cleaning into a wire of 2 mm in diameter. After annealing it at a temperature of 500 - 650°C, it was further cold-worked into a wire of 0.26 mm in diameter.
  • Table II The characteristics of a copper alloy of cold working finish, a copper alloy of annealing finish at a temperature of 550°C, a copper alloy obtained by a conventional precipitation hardening treatment and pure copper are shown in Table II.
  • the evaluation method was as follows:
  • the grain forms are, in an alloy of rolling finish, relatively elongated and, in an alloy of annealing finish, relatively circular.
  • alloys with a grain size number of not less than 7 manufactured by repeated annealings and cold workings without requiring the solution treatment in accordance with the method of the present invention are shown in Table III. These alloys are an alloy (A) of 1% by weight of chrome and copper; an alloy (B) of 0.15% by weight of zirconium and copper; an alloy (C) of 0.7% by weight of chrome, 0.3% by weight of zirconium and copper; an alloy (D) of 1% by weight of chrome, 0.03% by weight of silicon and copper; an alloy (E) of 0.15% by weight of zirconium, 0.03% by weight of silicon and copper; and an alloy (F) of 0.7% by weight of chrome, 0.15% by weight of zirconium, 0.03% by weight of silicon and copper.
  • Silicon, germanium, boron, magnesium and so on are effective for improving the mechanical strength and for suppressing the generation of coarse grains.
  • the electrically conductive copper alloy of the present invention may be applied in wide range including cables for welders, elevator cables, jumpers for vehicles, crane cables, trolly hard copper twisted wires of cable rack wires for power stations and substations, lead wires and so on.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Conductive Materials (AREA)
EP19800104479 1979-07-30 1980-07-29 Procédé pour la fabrication d'un alliage de cuivre électriquement conducteur Expired - Lifetime EP0023362B2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP9606779A JPS5620136A (en) 1979-07-30 1979-07-30 Copper alloy member
JP96067/79 1979-07-30
JP9988479A JPS5625940A (en) 1979-08-07 1979-08-07 Refinig method of copper alloy
JP99884/79 1979-08-07

Publications (3)

Publication Number Publication Date
EP0023362A1 true EP0023362A1 (fr) 1981-02-04
EP0023362B1 EP0023362B1 (fr) 1985-06-19
EP0023362B2 EP0023362B2 (fr) 1993-04-28

Family

ID=26437313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800104479 Expired - Lifetime EP0023362B2 (fr) 1979-07-30 1980-07-29 Procédé pour la fabrication d'un alliage de cuivre électriquement conducteur

Country Status (2)

Country Link
EP (1) EP0023362B2 (fr)
DE (1) DE3070776D1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0029888A1 (fr) * 1979-11-19 1981-06-10 International Business Machines Corporation Procédé de fabrication d'un fil conducteur
US4640723A (en) * 1982-12-23 1987-02-03 Tokyo Shibaura Denki Kabushiki Kaisha Lead frame and method for manufacturing the same
GB2181742A (en) * 1985-09-13 1987-04-29 Mitsubishi Metal Corp Copper alloy lead material for use in semiconductor device
EP0299605A3 (en) * 1987-05-26 1990-05-16 Nippon Steel Corporation Iron-copper-chromium alloy for high-strength lead frame or pin grid array and process for preparation thereof
EP0569036A3 (fr) * 1992-05-08 1994-01-19 Mitsubishi Materials Corp
US5306465A (en) * 1992-11-04 1994-04-26 Olin Corporation Copper alloy having high strength and high electrical conductivity
US5370840A (en) * 1992-11-04 1994-12-06 Olin Corporation Copper alloy having high strength and high electrical conductivity
US5486244A (en) * 1992-11-04 1996-01-23 Olin Corporation Process for improving the bend formability of copper alloys
EP0702375A3 (fr) * 1994-09-15 1996-09-11 Siemens Ag Fil conducteur aérien pour chemins de fer électriques à grande vitesse et procédé pour sa fabrication
US5705125A (en) * 1992-05-08 1998-01-06 Mitsubishi Materials Corporation Wire for electric railways
US20170312101A1 (en) * 2014-11-28 2017-11-02 Lifetech Scientific (Shenzhen) Co., Ltd. Lumen Stent and Preform Thereof, and Methods for Preparing Lumen Stent and Preform Thereof
CN111621666A (zh) * 2020-06-22 2020-09-04 陕西斯瑞新材料股份有限公司 一种Cu-Cr系列合金板带的轧制方法
CN112301251A (zh) * 2020-09-25 2021-02-02 中铜华中铜业有限公司 一种时效强化型Cu-Cr-Zr合金板/带材及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB508330A (en) * 1937-04-02 1939-06-29 Philips Nv Improvements in or relating to wire-shaped bodies of high tensile strength and smallspecific resistance
GB921795A (en) * 1961-01-27 1963-03-27 Mallory Metallurg Prod Ltd Improvements in and relating to copper-base alloys
GB1030427A (en) * 1962-12-26 1966-05-25 Nippert Electric Products Comp A method of producing a copper base alloy conductor
US3392016A (en) * 1965-10-15 1968-07-09 American Metal Climax Inc Copper-zirconium alloy
GB1353430A (en) * 1971-07-20 1974-05-15 Gni I Pi Splavov I Obrabotki T Copper-based alloys

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB508330A (en) * 1937-04-02 1939-06-29 Philips Nv Improvements in or relating to wire-shaped bodies of high tensile strength and smallspecific resistance
GB921795A (en) * 1961-01-27 1963-03-27 Mallory Metallurg Prod Ltd Improvements in and relating to copper-base alloys
GB1030427A (en) * 1962-12-26 1966-05-25 Nippert Electric Products Comp A method of producing a copper base alloy conductor
US3392016A (en) * 1965-10-15 1968-07-09 American Metal Climax Inc Copper-zirconium alloy
GB1353430A (en) * 1971-07-20 1974-05-15 Gni I Pi Splavov I Obrabotki T Copper-based alloys

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
FUJITSU SCIENTIFIC & TECHNICAL JOURNAL, September 1974, Z. HENMI et al. "Effect of precipitates on recrystallization temperature in conductive materials", pages 173-193. * Page 179 * *
PATENTS ABSTRACTS OF JAPAN, Vol. 1, No. 45, 4th May 1977, page 1825 C 76; & J P-A-52 003 523; & JP-A-52 003 524. *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0029888A1 (fr) * 1979-11-19 1981-06-10 International Business Machines Corporation Procédé de fabrication d'un fil conducteur
US4640723A (en) * 1982-12-23 1987-02-03 Tokyo Shibaura Denki Kabushiki Kaisha Lead frame and method for manufacturing the same
GB2181742A (en) * 1985-09-13 1987-04-29 Mitsubishi Metal Corp Copper alloy lead material for use in semiconductor device
US4749548A (en) * 1985-09-13 1988-06-07 Mitsubishi Kinzoku Kabushiki Kaisha Copper alloy lead material for use in semiconductor device
GB2181742B (en) * 1985-09-13 1990-05-23 Mitsubishi Metal Corp Copper alloy lead material for use in semiconductor device
EP0299605A3 (en) * 1987-05-26 1990-05-16 Nippon Steel Corporation Iron-copper-chromium alloy for high-strength lead frame or pin grid array and process for preparation thereof
US5085712A (en) * 1987-05-26 1992-02-04 Nippon Steel Corporation Iron/copper/chromium alloy material for high-strength lead frame or pin grid array
US5391243A (en) * 1992-05-08 1995-02-21 Mitsubishi Materials Corporation Method for producing wire for electric railways
EP0569036A3 (fr) * 1992-05-08 1994-01-19 Mitsubishi Materials Corp
US5705125A (en) * 1992-05-08 1998-01-06 Mitsubishi Materials Corporation Wire for electric railways
US5306465A (en) * 1992-11-04 1994-04-26 Olin Corporation Copper alloy having high strength and high electrical conductivity
US5486244A (en) * 1992-11-04 1996-01-23 Olin Corporation Process for improving the bend formability of copper alloys
US5601665A (en) * 1992-11-04 1997-02-11 Olin Corporation Process for improving the bend formability of copper alloys
US5370840A (en) * 1992-11-04 1994-12-06 Olin Corporation Copper alloy having high strength and high electrical conductivity
EP0702375A3 (fr) * 1994-09-15 1996-09-11 Siemens Ag Fil conducteur aérien pour chemins de fer électriques à grande vitesse et procédé pour sa fabrication
US20170312101A1 (en) * 2014-11-28 2017-11-02 Lifetech Scientific (Shenzhen) Co., Ltd. Lumen Stent and Preform Thereof, and Methods for Preparing Lumen Stent and Preform Thereof
CN111621666A (zh) * 2020-06-22 2020-09-04 陕西斯瑞新材料股份有限公司 一种Cu-Cr系列合金板带的轧制方法
CN111621666B (zh) * 2020-06-22 2021-05-07 陕西斯瑞新材料股份有限公司 一种Cu-Cr系列合金板带的轧制方法
CN112301251A (zh) * 2020-09-25 2021-02-02 中铜华中铜业有限公司 一种时效强化型Cu-Cr-Zr合金板/带材及其制备方法

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Publication number Publication date
EP0023362B1 (fr) 1985-06-19
DE3070776D1 (en) 1985-07-25
EP0023362B2 (fr) 1993-04-28

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