EP0011811B1 - Pièce conductrice électrique à isolation résistant à des températures supérieures à 250 Grad C et procédé de fabrication de celle-ci - Google Patents

Pièce conductrice électrique à isolation résistant à des températures supérieures à 250 Grad C et procédé de fabrication de celle-ci Download PDF

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Publication number
EP0011811B1
EP0011811B1 EP79104609A EP79104609A EP0011811B1 EP 0011811 B1 EP0011811 B1 EP 0011811B1 EP 79104609 A EP79104609 A EP 79104609A EP 79104609 A EP79104609 A EP 79104609A EP 0011811 B1 EP0011811 B1 EP 0011811B1
Authority
EP
European Patent Office
Prior art keywords
copper
grad
making
same
electrical conductor
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
Application number
EP79104609A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0011811A1 (fr
Inventor
Alain Anton
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.)
Alstom SA
Original Assignee
Alsthom Atlantique SA
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 Alsthom Atlantique SA filed Critical Alsthom Atlantique SA
Priority to AT79104609T priority Critical patent/ATE1923T1/de
Publication of EP0011811A1 publication Critical patent/EP0011811A1/fr
Application granted granted Critical
Publication of EP0011811B1 publication Critical patent/EP0011811B1/fr
Expired legal-status Critical Current

Links

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
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S72/00—Metal deforming
    • Y10S72/70—Deforming specified alloys or uncommon metal or bimetallic work
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12903—Cu-base component
    • Y10T428/1291—Next to Co-, Cu-, or Ni-base component

Definitions

  • the present invention relates to an electrical conductive piece with insulation resistant to temperatures above 250 ° C, and a method of manufacturing such a conductive piece, and in particular an electrical conductor of this kind and its manufacturing process.
  • Electric conductors having to resist high temperatures have already been proposed, constituted by wires of a good conductive metal, generally copper, provided with a coating of nickel or gold, for example, on which an enamel is applied. a heat-resistant synthetic resin.
  • a good conductive metal generally copper
  • the insulating enamels often being partially porous to air, an oxide layer is formed on the copper from 250 ° C. which considerably reduces the adhesion of the enamel on the conductor, which harms the phenomenon of thermal conduction and the mechanical strength of the insulating assembly.
  • the surface electrical conductivity of the protective metal being higher than that of copper, the current concentrates even more on the surface of the conductor and causes additional heating of the enamel .
  • the object of the present invention is to provide an electrical conductive piece with insulator resistant to high temperatures, above 250 ° C., for long periods, of the order of tens of thousands of hours, and even supporting a certain amount of time. temperatures from 400 to 500 ° C., the coating enamel being then judiciously chosen from those resistant to these temperatures, such as thermostable heterocyclic polymers or organomineral polymers.
  • the electrical conductive part according to the invention is characterized in that its conductive core is obtained by drawing a copper billet coated with a cupro-aluminlum alloy. Such billets are known, but have not hitherto been used in the manufacture of electrical conductors.
  • this conductive part is characterized in that its conductive core is prepared by subjecting a copper billet coated with a cupro-aluminum alloy to one or more hot drawn drawings reducing its diameter to a value between 13 and 8 mm, then to a series of cold drawing with lubrication. Preferably, some of the cold drawing is carried out annealing under vacuum or under inert gas.
  • a first wire drawing is carried out. hot at 700 ° -750 ° C to bring the diameter between 13 and 8 mm.
  • a conductor of this kind with a diameter of 0.8 mm has a surface electrical resistance close to that of copper (1,941 ⁇ cm 2 / cm compared to 1,724 ⁇ cm 2 / cm). Its oxidation only takes place from 600 ° C with a saturation phenomenon. It can be used in rotating machines for 20,000 hours at 250 ° C.

Landscapes

  • Conductive Materials (AREA)
  • Insulated Conductors (AREA)
  • Non-Insulated Conductors (AREA)
  • Metal Extraction Processes (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
  • Secondary Cells (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
EP79104609A 1978-11-24 1979-11-20 Pièce conductrice électrique à isolation résistant à des températures supérieures à 250 Grad C et procédé de fabrication de celle-ci Expired EP0011811B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79104609T ATE1923T1 (de) 1978-11-24 1979-11-20 Elektrischer leiter mit einer gegenueber einer temperatur ueber 250 grad c bestaendigen isolation und verfahren zur herstellung dieses leiters.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7833182 1978-11-24
FR7833182A FR2442494A1 (fr) 1978-11-24 1978-11-24 Piece conductrice electrique a isolation resistant a des temperatures elevees et procede de fabrication de celle-ci

Publications (2)

Publication Number Publication Date
EP0011811A1 EP0011811A1 (fr) 1980-06-11
EP0011811B1 true EP0011811B1 (fr) 1982-12-01

Family

ID=9215284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104609A Expired EP0011811B1 (fr) 1978-11-24 1979-11-20 Pièce conductrice électrique à isolation résistant à des températures supérieures à 250 Grad C et procédé de fabrication de celle-ci

Country Status (7)

Country Link
US (1) US4320177A (enExample)
EP (1) EP0011811B1 (enExample)
JP (1) JPS5578411A (enExample)
AT (1) ATE1923T1 (enExample)
DE (1) DE2964170D1 (enExample)
ES (1) ES486288A1 (enExample)
FR (1) FR2442494A1 (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4815309A (en) * 1986-03-18 1989-03-28 Sumitomo Electric Industries, Ltd. Method of producing an electrical conductor
CN116313250A (zh) * 2022-12-12 2023-06-23 安徽鑫海高导新材料有限公司 一种铜绞线及其短流程拉丝工艺

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR516373A (fr) * 1918-03-08 1921-04-18 Elektro Elevator Brandes & Win Conducteur électrique composé servant à augmenter l'effet des machines et autres appareils électriques ainsi que la conductibilité dans les fils ou cables conducteurs d'électricité
FR618485A (fr) * 1926-07-05 1927-03-10 Metallisator Berlin Aktien Ges Procédé pour la production de revêtements en aluminium sur des métaux
US2196855A (en) * 1934-10-17 1940-04-09 Gen Electric Protective coating for copper wires
US3097965A (en) * 1961-06-27 1963-07-16 Richard A Wilkins Conductive wire coating alloys, wires coated therewith and process for improving solderability therefor
DE1195837B (de) * 1962-07-19 1965-07-01 Siemens Ag Starkstromkabel, insbesondere fuer Hoch-spannung, mit thermoplastischer Leiter-isolierung und metallischer Einzelader-abschirmung
US3238025A (en) * 1962-12-31 1966-03-01 Anaconda Wire & Cable Co High-temperature conductor
US3381364A (en) * 1965-05-07 1968-05-07 Olin Mathieson Process for obtaining a clad article with a copper base alloy core
FR1474034A (fr) * 1966-01-18 1967-03-24 Bocuze & Cie J Perfectionnements aux fils de cuivre ou d'argent recouverts d'aluminium
US3537493A (en) * 1967-05-24 1970-11-03 Texas Instruments Inc Method of forming and heat treating a composite wire
FR1556101A (enExample) * 1968-03-07 1969-01-31
US3729294A (en) * 1968-04-10 1973-04-24 Gen Electric Zinc diffused copper
US3967013A (en) * 1973-10-23 1976-06-29 Eaton Corporation Method of making a composite article for rapid heating
JPS5193976U (enExample) * 1975-01-27 1976-07-28
US3969155A (en) * 1975-04-08 1976-07-13 Kawecki Berylco Industries, Inc. Production of tapered titanium alloy tube

Also Published As

Publication number Publication date
JPS6355166B2 (enExample) 1988-11-01
US4320177A (en) 1982-03-16
ES486288A1 (es) 1980-05-16
ATE1923T1 (de) 1982-12-15
DE2964170D1 (en) 1983-01-05
EP0011811A1 (fr) 1980-06-11
FR2442494A1 (fr) 1980-06-20
FR2442494B1 (enExample) 1981-05-08
JPS5578411A (en) 1980-06-13

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