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WO2016003068A1 - Fil conducteur en alliage d'aluminium et son procédé de fabrication - Google Patents

Fil conducteur en alliage d'aluminium et son procédé de fabrication Download PDF

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Publication number
WO2016003068A1
WO2016003068A1 PCT/KR2015/005059 KR2015005059W WO2016003068A1 WO 2016003068 A1 WO2016003068 A1 WO 2016003068A1 KR 2015005059 W KR2015005059 W KR 2015005059W WO 2016003068 A1 WO2016003068 A1 WO 2016003068A1
Authority
WO
WIPO (PCT)
Prior art keywords
aluminum alloy
conductor wire
wire
alloy conductor
weight
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.)
Ceased
Application number
PCT/KR2015/005059
Other languages
English (en)
Korean (ko)
Inventor
박지용
신승현
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.)
LS Cable and Systems Ltd
Original Assignee
LS Cable and Systems 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.)
Filing date
Publication date
Priority claimed from KR1020150001247A external-priority patent/KR101716645B1/ko
Application filed by LS Cable and Systems Ltd filed Critical LS Cable and Systems Ltd
Priority to CN201580036521.5A priority Critical patent/CN106663490B/zh
Priority to JP2016575508A priority patent/JP6473465B2/ja
Publication of WO2016003068A1 publication Critical patent/WO2016003068A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing 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

Definitions

  • the present invention relates to an aluminum alloy conductor wire and a method of manufacturing the same.
  • the present invention relates to an aluminum alloy conductor wire having excellent elongation in trade-off and excellent electrical conductivity, and a method of manufacturing the same, while having excellent mechanical strength such as tensile strength.
  • Aluminum conductor wire is lighter and cheaper than copper conductor wire and copper alloy conductor wire, easy to cast, easy to alloy with other metals, easy to process at room temperature and silver, and corrosion resistance in air It is widely used for conductors such as overhead transmission lines, underground transmission lines, and building cables for reasons of excellent durability and the like.
  • pure aluminum conductor wire has excellent properties such as elongation and electrical conductivity, but mechanical strength such as tensile strength is insufficient.
  • cables used in severe vibration environments such as cables used in automobiles, aircrafts, and motor cylinders.
  • the mechanical strength which determines the resistance to vibration needs to be improved.
  • the cable industry can simultaneously replace the mechanical and electrical conductors such as tensile strength, elongation at the same time, and electrical conductivity to replace copper and copper alloy conductors with aluminum alloy conductors.
  • An object of the present invention is to provide an aluminum alloy conductor wire which is excellent in mechanical strength such as tensile strength, elongation in conflict with this, and electrical conductivity, even when the diameter is small.
  • An average distance between precipitates formed from the composition which is the average of the distances between the precipitates distributed within the unit radius (50), based on any precipitate, from 2 to 15 jwm, with an average diameter of from 0.15 to 0.5 kPa, Provides aluminum alloy conductor wires.
  • the boron (B) and the: titanium (TO is an Al-Ti-B intermetallic compound
  • An aluminum alloy conductor wire which is present, is provided.
  • the precipitate provides : an aluminum alloy conductor wire, characterized in that it comprises an Al-Fe intermetallic compound, an Al-Cu intermetallic compound, and an Al-Ti-B metal galvanized compound.
  • the aluminum alloy conductor electric wire characterized by having a grain average particle diameter of 50 or less is provided.
  • An aluminum alloy conductor wire is provided, characterized in that the tensile strength is at least 140 MPa, the elongation is at least 15%, and the electrical conductivity is at least 59% IACS.
  • the inevitable impurities may include: vanadium (V), chromium (Cr) and nickel (Ni), each of the inevitable impurities; the content is 0.01% by weight or less, and inevitable
  • An aluminum alloy conductor wire is provided, characterized in that the total content of impurities is 0.01 weight or less.
  • Aluminum alloy wire comprising the steps of: manufacturing an aluminum alloy wire by continuous casting rolling of the aluminum alloy composition, drawing the aluminum alloy wire, and subjecting the drawing process to heat treatment of an aluminum alloy wire. It provides a method of manufacturing.
  • Al-Ti-B alloy further comprising the step of performing a degassing and foreign matter filtration of the aluminum alloy composition, it provides a method of manufacturing an aluminum alloy conductor wire.
  • the temperature of the continuously cast rolling aluminum alloy composition is from 730 to
  • a method for producing an aluminum alloy conductor wire characterized in that 900 ° C. Furthermore, the heat treatment is performed for 2 to 12 hours at 260 to 360 ° C., the grain size after the heat treatment is characterized in that 50 m or less, provides a method for producing an aluminum alloy conductor wire.
  • the aluminum alloy conductor wire according to the present invention is selected from a specific alloy element and
  • the manufacturing method of the aluminum alloy conductor wire according to the present invention does not require a separate grain refinement process, the manufacturing process is simple, and thus, the manufacturing cost is reduced, and the characteristics of the aluminum alloy conductor wire manufactured by precise process conditions and control are obtained. It shows the excellent effect which can be improved evenly.
  • Figure 3 shows the distance between the precipitate in the SEM photograph of the aluminum alloy conductor wire of Example 1 according to the present invention and the SEM photograph of the aluminum alloy conductor wire of Comparative Example 5.
  • the aluminum alloy composition for forming the aluminum alloy conductor wire according to the present invention contains aluminum (A1) as a main component, and additionally iron (Fe), copper (Cu), boron (B) and titanium (Ti) as alloy elements. It contains.
  • the aluminum alloy conductor wire contains aluminum (A1) as a main component, and additionally iron (Fe), copper (Cu), boron (B) and titanium (Ti) as alloy elements. It contains.
  • the content of iron (Fe) is the total weight of the aluminum alloy composition
  • the iron (Fe) content is less than 0.3 wt%, the degree of improvement in the mechanical strength of the aluminum alloy conductor wire is insufficient, whereas when the content of the iron (Fe) is greater than 0.6 wt%, the Al-Fe intermetallic compound becomes coarse: Extrusion property may fall, and elongation, electrical conductivity, etc. of an aluminum alloy conductor wire may fall large.
  • copper (Cu) is dissolved in aluminum (A1) to increase the corrosion potential of the aluminum alloy to improve the corrosion resistance of the aluminum alloy, and like Al (Cu) in the matrix (Ma) between the Al—Cu metal Heat treatment by being present as a compound Precipitation in the step to suppress the growth of grains to improve the mechanical strength, such as tensile strength.
  • the content of copper (Cu) may be 0.3 to 0.5% by weight based on the total weight of the aluminum alloy herb.
  • the copper (Cu) content is less than 0.3% by weight, the degree of improvement in mechanical strength of the aluminum alloy conductor wire is insufficient, whereas when the content of copper (Cu) is greater than 0.5% by weight, the intermetallic compound is coarse to reduce the extrudability of the aluminum alloy composition.
  • Aluminum alloy conductor wire, elongation, electrical conductivity, etc. can be greatly reduced.
  • Boron (B) as the alloying element promotes the precipitation of intermetallic compounds in the heat treatment step during the manufacturing process of the aluminum alloy conductor wire, thereby suppressing coarsening of crystal grains, thereby improving the strength of the aluminum alloy conductor wire, and lowering the electrical conductivity. It will act to suppress.
  • the content of the boron (B) may be 0.001 to 0 0 ⁇ weight% based on the total weight of the aluminum alloy composition.
  • the boron (B) content is less than 0.001% by weight, the degree of improvement in mechanical strength of the one: luminum alloy conductor wire is insufficient.
  • the content of the boron (B) is greater than 0.01% by weight, an intermetallic compound is generated to generate an aluminum alloy conductor wire. The electrical conductivity of can be greatly reduced.
  • titanium (Ti) has a melting point of 1,800 ° C., so that the melting point of iron (Fe), which is another alloying element, is 1540 ° C., and that of copper (Cu) is higher than 1084.5 ° C., so that Al-Ti-B Alloy rods are added in the form of, for example, and in the form of A1-TL in aluminum alloys :
  • the precipitates at the average distance between the precipitates include not only Al-Ti intermetallic compounds, but also Al-Fe intermetallic compounds Al-Cu intermetallic compounds, and the like; average distances between precipitates reduced by addition of titanium (Ti); That is, the average of the distances between the precipitates distributed within the unit radius 50 based on any precipitate is preferably 2 It may be from 15 to 15 urn, more preferably from 2 to 5.5 / m, and thus the average distance between the precipitates is reduced, the precipitate can act as a barrier (barrier) to inhibit the growth of the grains.
  • titanium (Ti) acts as a grain refining mechanism and the average distance between precipitates is reduced, the average grain size of the grains is controlled to about 50 m or less, preferably about 10 to 40 jams.
  • aluminum alloys containing titanium (Ti) can be refined by Al-Ti intermetallic compounds as described above, so that heat treatment is performed at a higher temperature or for a longer time to improve the elongation of the aluminum alloy. Even though the tensile strength is lowered compared to titanium (aluminum alloy without TO, the titanium alloy is not added and titanium is not added.
  • the ⁇ group titanium (Ti) and the content may be 0.01 to 0.03 weight 3 ⁇ 4 based on the total weight of the aluminum alloy composition.
  • the content of titanium (Ti) is less than 0.01% by weight, it is difficult to exert grain refinement effect of the aluminum alloy conductor wire, whereas when it exceeds 0.03% by weight, a large amount of impurities are added to the aluminum alloy to make a coarse metal compound.
  • the conductivity may be reduced. i:
  • the aluminum alloy composition 3 ⁇ 4 is an impurity inevitably added in the manufacturing process in addition to aluminum (A1) as a main component and iron (Fe), copper (Cu), boron (B), and titanium (Ti) as an alloying element, for example, Vanadium (V), chromium (Cr), nickel (), and the like.
  • the content of each of the unavoidable “pures” may be, for example, 0.01 wt% or less, and the total content of the unavoidable impurities may be, for example, 0.1 wt 3 ⁇ 4> or less.
  • FIG. 1 is a flow chart of the aluminum alloy conductor wire and manufacturing process according to the present invention. As shown in Figure 1, of the aluminum alloy conductor wire according to the present invention
  • the manufacturing method may include the following steps a) wedge e).
  • the method of manufacturing an aluminum alloy conductor wire according to the present invention may further include: a) degassing and submaterial filtering of the aluminum alloy composition after step S110.
  • the degassing and sub-material filtration step is a)
  • step S110 and b) step S120 it is desirable to perform between step S110 and b) step S120.
  • step S120 If the degassing and foreign matter filtration step after step S120 is carried out, the A1-Ti intermetallic compound may be degassed with the gas. : As described above, since the precipitates of the Al-Ti-B alloy added in step b) are uniformly distributed in the matrix, the distance between the precipitates that determine the grain size is reduced, and as a result, the grain refinement is achieved. Mechanical strength such as tensile strength of the aluminum alloy can be improved.
  • the method of manufacturing the aluminum alloy conductor wire according to the present invention does not require a separate grain refinement process, thereby simplifying the manufacturing process and thus reducing the manufacturing cost.
  • step (S130) The temperature of the aluminum alloy composition applied to the continuous casting rolling is preferably 730 to 900 ° C. remind
  • the aluminum alloy wire produced in step (S130) is most preferably cast in a size of about 10 ⁇ diameter so that it can be usefully applied to automotive cables, according to the use of the aluminum alloy conductor wire according to the present invention After the casting, the diameter of the aluminum alloy wire can be appropriately selected by a person skilled in the art.
  • step S140 the cast aluminum alloy wire is processed to reduce the cross section to produce an alloy wire of a predetermined specification.
  • step d) (S140) is a process for drawing a wire drawn from the aluminum alloy wire manufactured in step c) (S130) with an average diameter of about 2 ram, and again the average diameter of about 0.15 to 0.5 mm A thin wire process may be included as a wire rod.
  • the aluminum alloy wire drawn in step S140 is heat-treated by the thermomembrane process of step S150 in solid or stranded wire. In the aluminum alloy wire, the elongation is improved through recovery by the stress relief after the internal stress of the alloy is increased by the heat treatment.
  • the toughness may be largely damaged by coarsening of grains. Therefore, it is most efficient to stop the heat treatment when the elongation of the aluminum alloy wire is improved to the maximum by the heat treatment and the tensile strength is not largely damaged, that is, when the average grain size of the crystal grains is maintained at about 50 or less.
  • the average distance of the precipitate is 2 to 15 ⁇ , that is, the process conditions that the elongation can be improved as much as possible while maintaining the average particle diameter of 50 or less as the heat treatment temperature is about 260 to 360 ° C.
  • heat treatment time may be about 2 to 12 hours.
  • the lower the heat treatment temperature increases the heat treatment time, while the higher heat treatment temperature shortens the heat treatment time, thereby minimizing the extent to which the tensile strength decreases by heat treatment. The rate of improvement can be maximized.
  • an aluminum alloy wire including an alloy component and the remainder of aluminum (A1) and unavoidable impurities was prepared, followed by a drawing process and a heat treatment process (310 ° C., & hr) to perform an example: And wire specimens according to each of the comparative examples were prepared.
  • the content and units of the alloying components shown in Table 1 below are by weight.
  • the electrical conductivity of each of the aluminum alloy wire specimens according to the Examples or Comparative Examples was calculated by measuring the electrical resistance by the Calvin Double Bridge method according to the ASTM B193 standard.
  • the average distance between precipitates is reduced by the optimal combination of alloying elements, the minimum content of alloying elements and the optimal blending ratio, thereby achieving finer grain size, and improving elongation to 15% or more due to heat treatment. Nevertheless, it was confirmed that the tensile strength could be maintained at 140 MPa or more by minimizing the decrease in tensile strength, and furthermore, by minimizing the content of alloying elements.
  • the specimens of Comparative Examples 2 and 4 exhibited extremely high amounts of alloying elements of iron (Fe) or copper (Cu), so that the electrical conductivity of aluminum alloys was lower than 59 ACS. It was confirmed that the lowered.
  • the specimen of Comparative Example 5 is not added to the titanium (Ti) and boron (B) for grain refinement, although the alloying elements of iron (Fe) and copper (Cu) to improve the tensile strength of the aluminum alloy is added in an appropriate amount As a result, the distance between the precipitates increased, thereby coarsening the crystallized grains, and as a result, it was confirmed that the tensile strength greatly decreased during the heat treatment to improve the elongation.
  • FIGS. 2 and 3 are scanning electron microscope (SEM) comparison photographs showing the distance between precipitates and the degree of grain refinement according to the addition of titanium (Ti) in Examples 1 and 5.
  • the aluminum alloy conductor wire according to the present invention reduces the distance between the precipitates that determine the size of the grains by the addition of titanium (Ti), thereby causing the grains to be refined.
  • Ti titanium

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

Abstract

La présente invention concerne un fil conducteur en alliage d'aluminium et son procédé de fabrication. En particulier, la présente invention concerne un fil conducteur en alliage d'aluminium et son procédé de fabrication, le fil conducteur en alliage d'aluminium ayant à la fois une excellente résistance mécanique, telle qu'une résistance à la traction, et d'excellentes caractéristiques en termes d'allongement et de conductivité électrique, un compromis existant entre l'allongement et la résistance.
PCT/KR2015/005059 2014-07-03 2015-05-20 Fil conducteur en alliage d'aluminium et son procédé de fabrication Ceased WO2016003068A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201580036521.5A CN106663490B (zh) 2014-07-03 2015-05-20 铝合金导体线芯及其制造方法
JP2016575508A JP6473465B2 (ja) 2014-07-03 2015-05-20 アルミニウム合金導体電線及びその製造方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2014-0083064 2014-07-03
KR20140083064 2014-07-03
KR10-2015-0001247 2015-01-06
KR1020150001247A KR101716645B1 (ko) 2014-07-03 2015-01-06 알루미늄 합금 도체 전선 및 이의 제조방법

Publications (1)

Publication Number Publication Date
WO2016003068A1 true WO2016003068A1 (fr) 2016-01-07

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PCT/KR2015/005059 Ceased WO2016003068A1 (fr) 2014-07-03 2015-05-20 Fil conducteur en alliage d'aluminium et son procédé de fabrication

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020516777A (ja) * 2017-05-17 2020-06-11 エルエス ケーブル アンド システム リミテッド． ケーブル導体用アルミニウム合金

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120084479A (ko) * 2011-01-20 2012-07-30 엘에스전선 주식회사 고전도도 및 고강도 특성을 갖는 알루미늄 합금선 및 그 제조방법
KR20130089665A (ko) * 2011-04-11 2013-08-12 스미토모덴키고교가부시키가이샤 알루미늄 합금선 및 그것을 이용한 알루미늄 합금 연선, 피복 전선, 와이어 하네스
JP5367926B1 (ja) * 2012-03-29 2013-12-11 古河電気工業株式会社 アルミニウム合金線およびその製造方法
CN103474153A (zh) * 2013-08-07 2013-12-25 武汉宏联电线电缆有限公司 一种稀土铝合金电力电缆及生产工艺
CN103903673A (zh) * 2014-04-21 2014-07-02 合肥市科亿铝业有限公司 一种铝合金电缆

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120084479A (ko) * 2011-01-20 2012-07-30 엘에스전선 주식회사 고전도도 및 고강도 특성을 갖는 알루미늄 합금선 및 그 제조방법
KR20130089665A (ko) * 2011-04-11 2013-08-12 스미토모덴키고교가부시키가이샤 알루미늄 합금선 및 그것을 이용한 알루미늄 합금 연선, 피복 전선, 와이어 하네스
JP5367926B1 (ja) * 2012-03-29 2013-12-11 古河電気工業株式会社 アルミニウム合金線およびその製造方法
CN103474153A (zh) * 2013-08-07 2013-12-25 武汉宏联电线电缆有限公司 一种稀土铝合金电力电缆及生产工艺
CN103903673A (zh) * 2014-04-21 2014-07-02 合肥市科亿铝业有限公司 一种铝合金电缆

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020516777A (ja) * 2017-05-17 2020-06-11 エルエス ケーブル アンド システム リミテッド． ケーブル導体用アルミニウム合金
US11508493B2 (en) 2017-05-17 2022-11-22 Ls Cable & System Ltd. Aluminum alloy for cable conductor

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