WO2024116240A1 - Fil en alliage de cuivre, fil électrique isolé, fil électrique isolé avec borne, et procédé de fabrication de fil en alliage de cuivre - Google Patents

Fil en alliage de cuivre, fil électrique isolé, fil électrique isolé avec borne, et procédé de fabrication de fil en alliage de cuivre Download PDF

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Publication number
WO2024116240A1
WO2024116240A1 PCT/JP2022/043767 JP2022043767W WO2024116240A1 WO 2024116240 A1 WO2024116240 A1 WO 2024116240A1 JP 2022043767 W JP2022043767 W JP 2022043767W WO 2024116240 A1 WO2024116240 A1 WO 2024116240A1
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WIPO (PCT)
Prior art keywords
conductor
wire
copper alloy
less
coating layer
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PCT/JP2022/043767
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English (en)
Japanese (ja)
Inventor
龍一 新井
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Ｓｗｃｃ株式会社
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Publication date
Application filed by Ｓｗｃｃ株式会社 filed Critical Ｓｗｃｃ株式会社
Priority to PCT/JP2022/043767 priority Critical patent/WO2024116240A1/fr
Publication of WO2024116240A1 publication Critical patent/WO2024116240A1/fr

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    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/08—Several wires or the like stranded in the form of a rope

Definitions

  • the present invention relates to copper alloy wire, insulated wire, insulated wire with terminal, and a method for manufacturing copper alloy wire.
  • Insulated electric wires having a conductor and a coating layer that covers the conductor are widely used as power lines, signal lines, etc. for vehicles and industrial use. Recently, there has been a demand for lighter insulated electric wires used in vehicles in order to improve the fuel efficiency of the vehicles, and efforts are being made to reduce the diameter of the insulated electric wires.
  • terminals are connected to both ends of an insulated electric wire, and the insulated electric wire is connected to various devices via the terminals. In a vehicle or the like, the device may be dropped while the insulated electric wire is connected to the device, and a very large stress may be momentarily applied to the insulated electric wire.
  • the insulated electric wire is required to have a strength capable of withstanding such stress, but when the diameter of the insulated electric wire is reduced, the strength tends to decrease, and the insulated electric wire is prone to breakage.
  • insulated electric wires for vehicles are sometimes used in door opening and closing parts, and the insulated electric wire is also required to have high flexibility.
  • the flexibility tends to decrease, and it has been difficult to increase both at the same time.
  • it has been proposed to adjust the type of metal contained in the conductor to increase various strengths of the insulated wire Patent Document 1.
  • a multi-component copper alloy is used as the alloy for the conductor, and there is a problem in that such a copper alloy wire is very expensive. Therefore, a main object of the present invention is to provide a copper alloy wire which is relatively low cost, has high flexibility even when the diameter is reduced, and has strength capable of withstanding instantaneous tensile stress, and a manufacturing method thereof.
  • a copper alloy wire containing 0.10 mass% or more and 0.35 mass% or less of Sn and the balance being Cu and unavoidable elements is provided such that, when a cross section including a longitudinal center of the copper alloy wire is analyzed by an EBSD (Electron Back Scatter Diffraction) method, a total area of crystal grains having a GAM (Grain Average Misorientation) value of 0.5 or less and an aspect ratio of 0.1 or more is 35.2% or more and 82.8% or less with respect to an area of an analysis region.
  • EBSD Electro Back Scatter Diffraction
  • the present invention provides a copper alloy wire and a manufacturing method thereof that is relatively low cost, has high flexibility even when the diameter is reduced, and has strength that can withstand momentary tensile stress.
  • FIG. 1A is a schematic cross-sectional view showing an example of an insulated wire
  • FIG. 1B is a schematic cross-sectional view showing another example of an insulated wire
  • FIG. 2A is an SEM image showing a cross-section of a strand of an insulated electric wire according to one embodiment
  • FIG. 2B is an SEM image of the center side in the longitudinal direction of the strand
  • FIG. 2C is an SEM image of the outer side in the longitudinal direction of the strand.
  • 4 is a flowchart showing a method for manufacturing an insulated wire according to an embodiment
  • FIG. 2 is a side view of an insulated electric wire with a terminal according to one embodiment.
  • FIG. 1 is a diagram for explaining a method of a bending test in an example.
  • Copper alloy wire and insulated wire The copper alloy wire and insulated wire according to the preferred embodiments of the present invention are extremely useful as power lines and signal lines for automobiles and industrial machines.
  • the insulated wire 1 of this embodiment has a conductor 2 made of multiple strands twisted together and a coating layer 3 for covering the conductor 2.
  • the conductor 2 is composed of one central strand 2a and six concentric strands 2b concentrically surrounding the central strand 2a.
  • the conductor 2 may be a non-compressed conductor in which a plurality of wires are simply twisted together as shown in Fig. 1A, or may be a compressed conductor in which a plurality of wires are twisted together and then compressed into a desired shape as shown in Fig. 1B.
  • the cross-sectional shape of the conductor 2 may be substantially circular or elliptical, or may be polygonal, etc.
  • a central strand 2a and concentric strands 2b arranged around it are twisted in a fixed direction with the central strand 2a as the axis.
  • the twist pitch is preferably 5 to 10 mm, and more preferably 6 to 8 mm.
  • the "twist pitch” refers to the length of the conductor 2 required for the conductor 2 to rotate 360° around the center line as the axis. If the twist pitch of the conductor 2 is 10 mm or less, when the coating layer 3 is formed around the conductor 2, the coating layer 3 is likely to bite into the conductor 2. As a result, not only the conductor 2 but also the coating layer 3 can function as a tension member.
  • Each of the wires (the central wire 2a and the concentric wires 2b) constituting the conductor is made of a copper alloy and corresponds to the copper alloy wire of the present invention.
  • the copper alloy contains 0.10% by mass to 0.35% by mass of Sn, with the remainder being Cu and unavoidable elements. If the amount of Sn in the copper alloy is equal to or greater than the lower limit, the conductor 2 is less likely to break even when stress is applied instantaneously to the insulated electric wire 1. On the other hand, if the amount of the additive element in the copper alloy is equal to or less than the upper limit, the conductivity of the conductor 2 is likely to be increased.
  • the copper alloy containing Sn within the above range is relatively low cost, by adjusting the structure in the wire as described below, the bending property is improved and strength capable of withstanding instantaneous tensile stress is obtained.
  • the cross-sectional area and diameter of each wire are not particularly limited, the total cross-sectional area of each wire, i.e., the cross-sectional area of the conductor 2, is preferably 0.15 mm2 or less.
  • the cross-sectional area of the conductor 2 is preferably 0.120 mm2 or more and 0.140 mm2 or less, and more preferably 0.125 mm2 or more and 0.134 mm2 or less.
  • the insulated wire 1 having the configuration of this embodiment, even if the cross-sectional area of the conductor 2 is reduced to 0.15 mm2 or less, sufficient strength and conductivity to withstand use can be obtained.
  • the wires constituting the conductor 2 may have the same or different thicknesses, but are usually the same.
  • the conductivity of the conductor 2 is preferably 80% IACS or more.
  • the insulated wire 1 can be used for various applications.
  • the conductivity of the conductor 2 is a value calculated from the electrical resistance value based on JIS H 0505.
  • the electrical resistance value is measured by the double bridge method using a conductor with a length of 500 mm.
  • the conductivity of the conductor 2 can be adjusted, for example, by the amount of Sn in the copper alloy.
  • the tensile strength of the conductor 2 is preferably 300 MPa or more and 400 MPa or less. When the tensile strength of the conductor 2 is within this range, the insulated electric wire 1 can be used for various applications.
  • the tensile strength of the conductor 2 is a value measured using a universal testing machine (autograph) manufactured by Shimadzu Corporation. The tensile strength of the conductor 2 can be adjusted by the amount of Sn in the copper alloy, the proportion of crystal grains, etc.
  • the elongation of the conductor 2 is preferably 5 to 18%. When the elongation of the conductor 2 is within this range, the insulated electric wire 1 can be used for various applications.
  • the elongation of the conductor 2 is also a value measured using a universal testing machine (autograph) manufactured by Shimadzu Corporation. The elongation of the conductor 2 is adjusted by the amount of Sn in the copper alloy, the proportion of crystal grains, etc.
  • the coating layer 3 is a layer that insulates the conductor 2, and although there are no particular limitations on the type, in this embodiment, it is a layer that contains polyvinyl chloride resin. Typically, the coating layer 3 is formed by extrusion using an extruder, etc. The coating layer 3 that mainly contains polyvinyl chloride resin may also contain components other than polyvinyl chloride resin in some parts.
  • the thickness of the coating layer 3 is not particularly limited, but is usually preferably 0.15 mm to 0.25 mm, and more preferably 0.15 mm to 0.20 mm. If the thickness of the coating layer 3 is equal to or greater than the lower limit, the insulation is improved, and as described above, when instantaneous tensile stress is applied to the insulated electric wire 1, the coating layer 3 is more likely to function as a tension member. On the other hand, if the thickness of the coating layer 3 is equal to or less than the upper limit, the insulated electric wire 1 can be made thinner.
  • Figure 2A shows an SEM (scanning electron microscope) image of a longitudinal section of a wire 2a or 2b in a conductor 2 of this embodiment, cut to include its longitudinal center
  • Figure 2B shows an enlarged image of the image near the widthwise center
  • Figure 2C shows an enlarged image of the image on the widthwise outer side.
  • each wire of this embodiment includes a striped processed structure extending along the longitudinal direction, and a granular recrystallized structure (also referred to as "crystal grains").
  • two analysis regions each measuring 31 ⁇ m long x 31 ⁇ m wide are set on the inside and outside of the wire cross section, and the proportion of crystal grains in each analysis region is calculated.
  • the “inner analysis region” is set so that its center passes through the center line C1 of the wire cross section.
  • the “outer analysis region” is set so that its center passes through the center line C2 of the outer region when the wire cross section is divided into thirds.
  • the crystal grain ratio is a value calculated by analyzing the analysis region by EBSD (Electron Back Scatter Diffraction) method, and is the ratio of the total area of crystal grains (recrystallized structure) having a GAM (Grain Average Misorientation) value of 0.5 or less and an aspect ratio of 0.1 or more to the area of the analysis region, i.e., ⁇ (total area of crystal grains in the analysis region/area of the analysis region) ⁇ 100 ⁇ .
  • the ratio of the total area of crystal grains to the area of the analysis region is determined by the average value of the area ratio of the inner crystal grains and the area ratio of the outer crystal grains, and is 35.2% or more and 82.8% or less.
  • the conductor 2 has good bending properties and is less likely to break even when subjected to instantaneous tensile stress.
  • the proportion of crystal grains can be adjusted by the temperature and time of heat treatment when producing the conductor 2, as shown in the method for producing an insulated electric wire described later.
  • the EBSD method is a value obtained when the cross section is analyzed under the following conditions.
  • the orientations of all pixels in the region analyzed by the EBSD method are calculated, and the boundaries where the orientation difference (grain tolerance angle) between adjacent pixels is 5° or more are regarded as grain boundaries.
  • the GAM value is a value that represents the average orientation difference between adjacent pixels in each grain, and can be calculated by the above analysis software.
  • the aspect ratio of the crystal grains represents (minor diameter of the crystal grain)/(major diameter of the crystal grain), and the minor diameter and major diameter of the crystal grains can be determined by the above-mentioned analysis software. The ratio of the total area of the crystal grains in the analysis region can also be calculated using the above analysis software.
  • the amount of oil on the surface of each strand in the conductor 2 is adjusted. Adjusting the amount of oil on the strand surface improves the adhesion between the conductor 2 and the coating layer 3.
  • the amount of oil on the strand surface can be evaluated by the amount of oil adhering to the surface of the central strand 2a of the conductor 2.
  • the amount of oil adhering to the surface of the central strand 2a of the conductor 2 is preferably 10 ⁇ g/g or less, more preferably 6 ⁇ g/g or less, relative to the mass of the central strand 2a. The smaller the amount of oil adhering to the central strand 2a, the higher the affinity between the conductor 2 and the coating layer 3.
  • the coating layer 3 is more likely to enter the gaps between the strands or to adhere to the surface of the conductor 2. Therefore, when the insulated wire 1 is subjected to instantaneous stress, breakage of the insulated wire 1 is more likely to be suppressed.
  • the reason why the oil content of the concentric wires 2b of the conductor 2 was excluded from the measurement targets is that (i) when the coating layer 3 is formed on the conductor 2, additives such as plasticizers contained in the resin composition of the coating layer 3 adhere to the concentric wires 2b during the manufacturing process, making it impossible to measure the oil content accurately, or conversely, (ii) when the coating layer 3 is removed from the conductor 2, the oil adhered to the concentric wires 2b is also removed at the same time, making it impossible to measure the oil content accurately.
  • the oil content of the central wire 2a is measured and controlled, it is reflected in the number of concentric wires 2b, which ultimately leads to control of the oil content of the entire conductor 2, making it possible to quantify the penetration of the coating layer 3 into the gaps between the wires and the adhesion of the coating layer 3 to the surface of the conductor 2.
  • the amount of oil adhering to the central strand 2a of the conductor 2 can be determined, for example, by the following method.
  • the insulated wire 1 is cut to a predetermined length, and the coating layer 3 is removed with a dedicated tool such as a stripper.
  • the conductor 2 is then pulled out.
  • the central strand 2a is then taken out of the conductor 2, and the oil is extracted with an extraction solvent (e.g., a trimer of chlorotrifluoroethylene). This process is repeated multiple times, and the oil content in the extract is determined with an oil concentration meter. The amount of oil thus obtained is then divided by the mass of the central strand 2a used for measurement to calculate the amount of oil.
  • the amount of oil adhering to the central strand 2a can be adjusted by the heat treatment temperature and time, degreasing treatment, etc. in the manufacturing method of the insulated wire 1 described below.
  • the method for producing the insulated wire 1 described above is not particularly limited as long as it includes the steps of drawing a plurality of strands of a copper alloy containing 0.10 mass % or more and 0.35 mass % or less of Sn, with the remainder being Cu and unavoidable elements, twisting the strands together to prepare a conductor, and heat treating the strands at 285° C. or more and 350° C. or less for 1 hour to 10 hours, and may further include other steps. As shown in the flowchart of FIG.
  • the method for producing an insulated wire of the present embodiment includes a step S1 of preparing a plurality of strands of wires, a step S2 of drawing the strands of wires, a step S3 of twisting the strands of wires together, a step S4 of heat-treating the strands of wires, and a step S5 of coating the conductor 2 with resin to form a coating layer 3.
  • the wire preparation process S1 is a process of forming a cast material by casting a copper alloy containing 0.10 mass% to 0.35 mass% Sn, with the remainder being Cu and unavoidable elements, but is not limited to this method.
  • the wire drawing step S2 is a step of cold drawing the above-mentioned cast material to a desired diameter. By carrying out the wire drawing step S2, the above-mentioned worked structure is introduced into the wire.
  • the degree of cold working in the wire drawing step S2 is preferably 5.5 to 9.0.
  • the step S3 of twisting the wires is a step of bundling a plurality of the wires and twisting them at a predetermined twist pitch (e.g., 5 to 10 mm) to adjust the cross-sectional area to a desired area (e.g., 0.15 mm2 or less).
  • a predetermined twist pitch e.g. 5 to 10 mm
  • a desired area e.g. 0.15 mm2 or less.
  • the resulting conductor 2 may be subjected to compression processing.
  • An example of the compression method includes, but is not limited to, a method in which the conductor 2 is fed into a die and then pulled out from the die.
  • degreasing may be performed as necessary to adjust the amount of oil adhering to the strands. Degreasing not only increases the affinity between each strand and the coating layer 3 covering it, but also makes it easier for heat to be transferred uniformly to each strand, making it easier for the coating layer 3 to penetrate uniformly into the gaps between the strands and for the coating layer 3 to adhere to the surface of each strand.
  • degreasing may be performed using an organic solvent or by heat treatment. When degreasing is performed with an organic solvent, the type of organic solvent is appropriately selected depending on the type of oil adhering to the strand.
  • the method of treating with an organic solvent is not particularly limited, and may be, for example, a method of immersing the strand in an organic solvent or a method of wiping it off with a cloth or the like soaked in an organic solvent.
  • the wire heat treatment step S4 is a step in which the wire is heat treated at 285°C to 350°C for 1 hour to 10 hours.
  • the heat treatment is preferably performed in the presence of an inert gas, such as a nitrogen stream. By performing the heat treatment at the above temperature and for the above time, the amount of crystal grains (recrystallized structure) in each wire can be adjusted to the above range.
  • the wire heat treatment step S4 may be performed before or after the wire twisting step S3.
  • the insulated wire of the present embodiment has a conductor made of a copper alloy mainly containing Cu and Sn, so that no special metal is required and the cost is relatively low.
  • the wires in the conductor contain a predetermined proportion of recrystallized structure (crystal grains).
  • the conductor when the wires in the conductor contain a large amount of processed structure, the conductor has a high tensile strength, but tends to have low elongation and bending properties.
  • the conductor when the wires contain a large amount of recrystallized structure, the conductor has a tendency to have high elongation and bending properties.
  • the recrystallized structure is uniformly distributed in the cross section in order to suppress variation in the characteristics of the metal structure.
  • the amount of recrystallized structure (crystal grains) when observing the entire width direction of the wire affects the tensile strength, bending property, elongation, strength against instantaneous tensile stress, etc. of the wire.
  • the insulated wire of this embodiment containing the recrystallized structure in the above range has high bending property and is unlikely to break even when instantaneous tensile stress is applied.
  • Such an insulated wire is very useful as an electric wire for various devices for vehicles and industries, for example.
  • the manufacturing method of this embodiment allows the desired amount of recrystallized structure (crystal grains) to be introduced into the wire. Furthermore, this manufacturing method does not require special equipment or special processes to manufacture the insulated wire, and allows the insulated wire to be manufactured efficiently.
  • the insulated electric wire with terminal of the present embodiment can be used for various wiring applications. For example, it can be used for wiring various electric devices such as devices for automobiles and airplanes, and control devices for industrial robots. More specifically, it can be used for automobile wire harnesses, etc.
  • the insulated electric wire with terminal has an insulated electric wire 1 and a terminal 10 connected to an end of the insulated electric wire 1.
  • the terminal 10 may be connected to one end of the insulated electric wire 1 or to both ends.
  • Terminal 10 has, arranged from one end, a female or male fitting portion 11 for connecting to various devices, a wire barrel portion 12 for fixing conductor 2 of insulated wire 1, and an insulation barrel portion 13 for supporting coating layer 3 of insulated wire 1, in that order.
  • the fitting portion 11 may have any structure that allows connection to various devices, and is appropriately selected depending on the type of device.
  • the wire barrel portion 12 has a structure for compressing and fixing the conductor 2 to reliably connect the conductor 2 and the terminal 10 electrically and mechanically.
  • the insulation barrel portion 13 has a structure for adequately supporting and fixing the coating layer 3. These structures are similar to those of a general terminal.
  • the method for manufacturing an insulated electric wire with a terminal basically includes a step of peeling off the coating layer 3 from the end of the insulated electric wire 1 to expose the conductor 2 , and a step of connecting the terminal 10 to the exposed portion of the conductor 2 .
  • the method of connecting the terminal 10 to the conductor 2 of the insulated wire 1 is the same as the general method, and for example, the coating layer 3 of the insulated wire 1 is fixed to the insulation barrel portion 13 of the terminal 10, and the wire barrel portion 12 is crimped to press the conductor 2 exposed to the wire barrel portion 12.
  • polyvinyl chloride resin was extruded from the die of the extruder to cover the conductor, forming a coating layer around the conductor.
  • the coating layer was 0.2 mm thick.
  • Sample 2 As in Sample 1, seven wires were prepared and twisted together at a twist pitch of 10 mm to form a conductor. The cross-sectional area of the conductor was 0.13 mm2. The conductor was then heat-treated at 285°C for 8 hours under a nitrogen gas flow. A coating layer was formed around the conductor as in Sample 1.
  • the total area of crystal grains (recrystallized regions) having a GAM value of 0.5 or less and an aspect ratio (minor axis/major axis) of 0.1 or more was calculated, and the ratio of the total area ⁇ (total area of crystal grains/analyzed area) ⁇ 100 ⁇ was specified.
  • the average value of the ratio of the area of the inner crystal grains and the ratio of the area of the outer crystal grains was calculated (see FIG. 2A).
  • the electrical conductivity of each sample wire was measured.
  • the electrical conductivity was calculated from the electrical resistance value based on JIS H 0505.
  • the electrical resistance value was measured by a double bridge method using a conductor with a measurement length of 500 mm.
  • the electrical conductivity is preferably in the range of 80% IACS or more.
  • Terminal Adhesion Strength The terminal adhesion strength of each sample insulated electric wire was measured. Specifically, the conductor at one end of each insulated wire was exposed, and a terminal was attached to the conductor. A commercially available crimp terminal was used as the terminal, and it was crimped to the conductor.
  • the installation height was set to an appropriate value depending on the combination of the conductor and the coating layer. Specifically, the installation height with the least variation in the terminal fixing force was specified in advance, and the specified value was set as the median. Then, the installation height was adjusted to be the median value ⁇ 0.03 mm. Then, using a general-purpose tensile tester, the maximum load (N) at which the terminal did not come off when pulled at 100 mm/min was measured. This maximum load was set as the terminal fixing force.
  • the terminal fixing force is preferably in the range of 50 N or more.
  • the insulated wire of the present invention has excellent flexibility and strength that can withstand momentary tensile stress. Therefore, it is very useful as a power line or signal line for vehicles or industry.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Insulated Conductors (AREA)

Abstract

L'invention concerne un fil en alliage de cuivre qui est d'un coût relativement faible, présente une aptitude au pliage élevée même lorsque son diamètre est réduit, et présente une résistance mécanique lui permettant de supporter une contrainte de traction instantanée. Ce fil d'alliage de cuivre contient de 0,10 % en masse à 0,35 % en masse de Sn, et le reste étant du Cu et des impuretés inévitables; et lorsqu'une section transversale comprenant le centre longitudinal du fil en alliage de cuivre est analysée au moyen d'une méthode de diffraction par rétrodiffusion d'électrons (EBSD), l'aire totale de grains cristallins ayant une valeur de désorientation moyenne de grain (GAM) inférieure ou égale à 0,5 et un rapport d'aspect supérieur ou égal à 0,1 est de 35,2 % à 82,8 % de l'aire des régions d'analyse.
PCT/JP2022/043767 2022-11-28 2022-11-28 Fil en alliage de cuivre, fil électrique isolé, fil électrique isolé avec borne, et procédé de fabrication de fil en alliage de cuivre WO2024116240A1 (fr)

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PCT/JP2022/043767 WO2024116240A1 (fr) 2022-11-28 2022-11-28 Fil en alliage de cuivre, fil électrique isolé, fil électrique isolé avec borne, et procédé de fabrication de fil en alliage de cuivre

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PCT/JP2022/043767 WO2024116240A1 (fr) 2022-11-28 2022-11-28 Fil en alliage de cuivre, fil électrique isolé, fil électrique isolé avec borne, et procédé de fabrication de fil en alliage de cuivre

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216422A (en) * 1975-07-29 1977-02-07 Sumitomo Electric Ind Ltd High strength copper alloy for electric conductor
JPS613858A (ja) * 1984-06-18 1986-01-09 Tatsuta Electric Wire & Cable Co Ltd 耐熱性、成形加工性及び導電性に優れた銅合金
JPS62128726A (ja) * 1985-11-30 1987-06-11 Mitsui Petrochem Ind Ltd 超高分子量ポリオレフイン被履金属線材及び被履金属線材製造装置
JPH06158201A (ja) * 1992-11-20 1994-06-07 Tatsuta Electric Wire & Cable Co Ltd 高力高導電性銅合金
JP2006108035A (ja) * 2004-10-08 2006-04-20 Auto Network Gijutsu Kenkyusho:Kk ワイヤーハーネス用高強度細径電線
WO2010084989A1 (fr) * 2009-01-26 2010-07-29 古河電気工業株式会社 Conducteur de fil électrique pour câblage, procédé de production de conducteur de fil électrique pour câblage, fil électrique pour câblage et fil en alliage de cuivre
JP2010212164A (ja) * 2009-03-11 2010-09-24 Mitsubishi Shindoh Co Ltd 電線導体の製造方法、電線導体、絶縁電線及びワイヤーハーネス

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216422A (en) * 1975-07-29 1977-02-07 Sumitomo Electric Ind Ltd High strength copper alloy for electric conductor
JPS613858A (ja) * 1984-06-18 1986-01-09 Tatsuta Electric Wire & Cable Co Ltd 耐熱性、成形加工性及び導電性に優れた銅合金
JPS62128726A (ja) * 1985-11-30 1987-06-11 Mitsui Petrochem Ind Ltd 超高分子量ポリオレフイン被履金属線材及び被履金属線材製造装置
JPH06158201A (ja) * 1992-11-20 1994-06-07 Tatsuta Electric Wire & Cable Co Ltd 高力高導電性銅合金
JP2006108035A (ja) * 2004-10-08 2006-04-20 Auto Network Gijutsu Kenkyusho:Kk ワイヤーハーネス用高強度細径電線
WO2010084989A1 (fr) * 2009-01-26 2010-07-29 古河電気工業株式会社 Conducteur de fil électrique pour câblage, procédé de production de conducteur de fil électrique pour câblage, fil électrique pour câblage et fil en alliage de cuivre
JP2010212164A (ja) * 2009-03-11 2010-09-24 Mitsubishi Shindoh Co Ltd 電線導体の製造方法、電線導体、絶縁電線及びワイヤーハーネス

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