US20120211130A1 - High-elongation rate aluminum alloy material for cable and preparation method thereof - Google Patents

High-elongation rate aluminum alloy material for cable and preparation method thereof Download PDF

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Publication number
US20120211130A1
US20120211130A1 US13/395,423 US201013395423A US2012211130A1 US 20120211130 A1 US20120211130 A1 US 20120211130A1 US 201013395423 A US201013395423 A US 201013395423A US 2012211130 A1 US2012211130 A1 US 2012211130A1
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Prior art keywords
aluminum alloy
alloy
rare earth
content
alloy material
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Abandoned
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US13/395,423
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English (en)
Inventor
Zemin Lin
Lehua Yu
Youmei Wan
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Anhui Joy Sense Cable Co Ltd
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Anhui Joy Sense Cable Co Ltd
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Application filed by Anhui Joy Sense Cable Co Ltd filed Critical Anhui Joy Sense Cable Co Ltd
Assigned to ANHUI JOYSENSES CABLE CO., LTD. reassignment ANHUI JOYSENSES CABLE CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIN, ZEMIN, WAN, YOUMEI, YU, LEHUA
Publication of US20120211130A1 publication Critical patent/US20120211130A1/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002—Castings of light metals
    • B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon

Definitions

  • the present invention pertains to the field of nonferrous metal materials, in particular to an aluminum alloy material with high elongation for cables and a preparation method for the same.
  • the object of the present invention is to provide an aluminum alloy material with high elongation for cables.
  • the wires and cables have high elongation, and can be used safely and stably.
  • an aluminum alloy material with high elongation for cables comprising the following components: Fe: 0.30 ⁇ 1.20 wt %, Si: 0.03 ⁇ 0.10 wt %, rare earth elements (i.e. Ce and La): 0.01 ⁇ 0.30 wt %, and the rest are Al and inevitable impurities.
  • Another object of the present invention is to provide a method for preparing the aluminum alloy material with high elongation, comprising the following steps:
  • said rare earth-Al alloy is the alloy of Al and rare earth elements (Ce and La); next, adding a refining agent in 0.04 ⁇ 0.06 pbw and refining for 8 ⁇ 20 minutes; then, holding at the temperature for 20 ⁇ 40 minutes, and then casting;
  • Said aluminum alloy material further comprises inevitable impurity elements, the total content of which in the aluminum alloy material is lower than 0.3 wt %.
  • the content of Ca in the impurities is lower than 0.02 wt %, and the content of any other impurity element is lower than 0.01%, so as to reduce the influence of the impurity elements on the conductivity of the aluminum alloy material.
  • the aluminum alloy material with high elongation for cables provided in the present invention is a new type Al—Fe alloy material with the following advantages:
  • the content of Fe according to the present invention is controlled within the range of 0.30 ⁇ 1.20%; thus the strength of the aluminum alloy can be increased, and the creep resistance and thermal stability of the aluminum alloy can also be improved.
  • the creep resistance is improved by 300% when compared to the conventional EC-aluminum material; furthermore, Fe can improve the toughness of the aluminum alloy, and the compression factor of the aluminum alloy material in the compression and twisting process can be as high as 0.93 or above, which can not be achieved by the conventional EC-aluminum material.
  • the compacted conductor made of the aluminum alloy in the same outside diameter has larger sectional area, higher electrical conductivity and higher stability, and is lower in production cost.
  • the content of Si according to the present invention is controlled within the range of 0.03 ⁇ 0.10%, which ensures the enhancement effect of Si to the strength of the aluminum alloy.
  • the rare earth elements according to the present invention can reduce the content of Si, and thereby reduce the influence of Fe, in particular Si on the conductivity of aluminum alloy to a very low level; moreover, the addition of rare earth elements improves the crystal structure of the aluminum alloy material and thereby improves the processing properties of the aluminum alloy material, and is favorable for processing of the aluminum alloy material.
  • the rare earth elements according to the present invention are mainly Ce and La, which can well attain the performance described in 3).
  • the element B according to the present invention can react with impurity elements such as Ti, V, Mn, Cr, etc., and form chemical compounds, which deposit and then can be removed; therefore, the influence of impurity elements (e.g., Ti, V, Mn, Cr, etc.) on the conductivity of aluminum alloy can be reduced; thus, the conductivity of aluminum alloy can be improved.
  • impurity elements such as Ti, V, Mn, Cr, etc.
  • the alloy material is conducted by semi-annealing treatment when the aluminum alloy is prepared in the present invention; therefore, the adverse effect of stress to the structure of the conductor during the drawing and twisting process can be reduced, so that the conductivity can be up to or even higher than 61% IACS (the criterion for conductivity of conductors made of conventional EC-aluminum is 61% IACS); in addition, the annealing treatment can greatly improve the elongation and flexibility of the aluminum alloy material. Cables made of the aluminum alloy material provided in the present invention can have the elongation as high as 30%, and the flexibility 25% higher than that of the copper cables, and a bending radius as small as 7 times of the outside diameter, while the bending radius of copper cable is 15 times of the outside diameter.
  • the furnace temperature is increased to 720 ⁇ 760° C., and not higher than 760° C.
  • increasing the temperature is favorable for melting of the rare earth-Al alloy and B ⁇ Al alloy, and thereby the treatment effect of rare earth elements and element B can be improved.
  • Adding rare earth-Al alloy and B—Al alloy in different time periods is to allow the rare earth elements and element B to play a full part, so as to improve the effect.
  • the aluminum alloy liquid including which is located at the corner positions in the furnace should be agitated for 5 minutes.
  • the volume of water inside the casting wheels to that outside the casting wheels 3: 2; the volume of secondary cooling water should be adjusted according to the temperature of the cast strips.
  • the aluminum alloy material obtained in that way contains the following components measured by weight percentage: Fe: 0.3%, Si: 0.03%, Ce: 0.008%, La: 0.002%, B: 0.005%, Ca: 0.015%, Cu: 0.002%, Mg: 0.005%, Zn: 0.002%, Ti: 0.002%, V: 0.005%, Mn: 0.002%, Cr: 0.001%, Al: the remaining part.
  • element B reacts with impurity elements such as Ti, V, Mn, Cr, etc., and forms chemical compounds, which deposit and can be removed, the content of element B in the resulting aluminum alloy material is lower than the amount added actually. It is seen that the total impurity content in the aluminum alloy material is lower than 0.3%, wherein, the content of any other impurity element is lower than 0.01%, except for the content of Ca, which is lower than 0.02%.
  • Tensile strength and elongation are tested according to the method described in ASTM B577; conductivity is tested according to the method described in ASTM B193, flexibility is tested according to the method of “Partial Discharge Test after Bending Test” described in GB 12706.1, and creep property is tested according to the creep test method described in the manual “Wires and Cables”.
  • the performance data of the aluminum alloy material with high elongation in this embodiment is: tensile strength: 106 MPa; elongation: 28%; conductivity: 63.0% IACS; partial discharge test after 6 ⁇ bending radius test: passed; creep resistance: higher than EC-aluminum by 310%.
  • the furnace temperature is increased to 720 ⁇ 760° C., and not higher than 760° C. .
  • increasing the temperature is favorable for melting of the rare earth-Al alloy and B—Al alloy, and thereby the treatment effect of rare earth elements and element B can be improved.
  • Adding rare earth-Al alloy and B—Al alloy in different time periods is to allow to the rare earth elements and element B to play a full part, so as to improve the effect.
  • the aluminum alloy liquid including which is located at the corner positions in the furnace should be agitated for 5 minutes.
  • the volume of water inside the casting wheels to that outside the casting wheels 3: 2; the volume of secondary cooling water should be adjusted according to the temperature of the cast strips.
  • the aluminum alloy material obtained in that way contains the following components measured by weight percentage: Fe: 1.2%, Si: 0.08%, Ce: 0.019%, La: 0.10%, B: 0.004%, Ca: 0.01%, Cu: 0.002%, Mg: 0.004%, Zn: 0.003%, Ti: 0.002%, V: 0.002%, Mn: 0.005%, Cr: 0.002%, Al: the remaining part.
  • element B reacts with impurity elements such as Ti, V, Mn, Cr, etc., and forms chemical compounds, which deposit and can be removed, the content of element B in the resulting aluminum alloy material is lower than the amount added actually.
  • the total impurity content in the aluminum alloy material is lower than 0.3%, wherein, the content of any other impurity element is lower than 0.01%, except for the content of Ca, which is lower than 0.02%.
  • Tensile strength and elongation are tested according to the method described in ASTM B577; conductivity is tested according to the method described in ASTM B193, flexibility is tested according to the method of “Partial Discharge Test after Bending Test” described in GB 12706.1, and creep property is tested according to the creep test method described in the manual “Wires and Cables”.
  • the performance data of the aluminum alloy material with high conductivity, high elongation, high flexibility, and high creep resistance in this embodiment is: tensile strength: 92 MPa; elongation: 36%; conductivity: 61.0% IACS; partial discharge test after 7 ⁇ bending radius test: passed; creep resistance: higher than EC-aluminum by 330%.
  • the furnace temperature is increased to 720 ⁇ 760° C., and not higher than 760° C. .
  • increasing the temperature is favorable for melting of the rare earth-Al alloy and B—Al alloy, and the treatment effect of rare earth elements and element B can be improved.
  • the aluminum alloy liquid including which is located at the corner positions in the furnace should be agitated for 5 minutes.
  • the volume of water inside the casting wheels to that outside the casting wheels 3: 2; the volume of secondary cooling water should be adjusted according to the temperature of the cast strips.
  • the aluminum alloy material obtained in that way contains the following components measured by weight percentage: Fe: 0.55%, Si: 0.10%, Ce: 0.15%, La: 0.06%, B: 0.007%, Ca: 0.013%, Cu: 0.003%, Mg: 0.004%, Zn: 0.004%, Ti: 0.002%, V: 0.004%, Mn: 0.003%, Cr: 0.002%, Al: the remaining part.
  • element B reacts with impurity elements such as Ti, V, Mn, Cr, etc., and forms chemical compounds, which deposit and can be removed, the content of element B in the resulting aluminum alloy material is lower than the amount added actually.
  • the total impurity content in the aluminum alloy material is lower than 0.3%, wherein, the content of any other impurity element is lower than 0.01%, except for the content of Ca, which is lower than 0.02%.
  • Tensile strength and elongation are tested according to the method described in ASTM B577; conductivity is tested according to the method described in ASTM B193, flexibility is tested according to the method of “Partial Discharge Test after Bending Test” described in GB 12706.1, and creep property is tested according to the creep test method described in the manual “Wires and Cables”.
  • the performance data of the aluminum alloy material with high elongation in this embodiment is: tensile strength: 106 MPa, elongation: 30.2%; conductivity: 62.6% IACS; partial discharge test after 6 ⁇ bending radius test: passed; creep resistance: higher than EC-aluminum by 330%.
  • the furnace temperature is increased to 720 ⁇ 760° C., and not higher than 760° C.
  • increasing the temperature is favorable for melting of the rare earth-Al alloy and B—Al alloy, and the treatment effect of rare earth elements and element B can be improved.
  • the aluminum alloy liquid including which is located at the corner positions in the furnace should be agitated for 5 minutes.
  • the volume of water inside the casting wheels to that outside the casting wheels 3: 2; the volume of secondary cooling water should be adjusted according to the temperature of the cast strips.
  • the aluminum alloy material obtained in that way contains the following components measured by weight percentage: Fe: 0.80%, Si: 0.04%, Ce: 0.10%, La: 0.06%, B: 0.008%, Ca: 0.011%, Cu: 0.005%, Mg: 0.004%, Zn: 0.006%, Ti: 0.003%, V: 0.003%, Mn: 0.005%, Cr: 0.002%, Al: the remaining part.
  • element B reacts with impurity elements such as Ti, V, Mn, Cr, etc., and forms chemical compounds, which deposit and can be removed, the content of element B in the resulting aluminum alloy material is lower than the amount added actually.
  • the total impurity content in the aluminum alloy material is lower than 0.3%, wherein, the content of any other impurity element is lower than 0.01%, except for the content of Ca, which is lower than 0.02%.
  • Tensile strength and elongation are tested according to the method described in ASTM B577; conductivity is tested according to the method described in ASTM B193, flexibility is tested according to the method of “Partial Discharge Test after Bending Test” described in GB 12706.1, and creep property is tested according to the creep test method described in the manual “Wires and Cables”.
  • the performance data of the aluminum alloy material with high elongation in this embodiment is: tensile strength: 97 MPa; elongation: 35.2%; conductivity: 62.0% IACS; partial discharge test after 6 ⁇ bending radius test: passed; creep resistance: higher than EC-aluminum by 330%.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Conductive Materials (AREA)
  • Continuous Casting (AREA)
  • Manufacture And Refinement Of Metals (AREA)
US13/395,423 2009-04-24 2010-04-09 High-elongation rate aluminum alloy material for cable and preparation method thereof Abandoned US20120211130A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN200910116635.7 2009-04-24
CN2009101166357A CN101525709B (zh) 2009-04-24 2009-04-24 电缆用高延伸率铝合金材料及其制备方法
PCT/CN2010/071654 WO2010121517A1 (zh) 2009-04-24 2010-04-09 电缆用高延伸率铝合金材料及其制备方法

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US (1) US20120211130A1 (zh)
EP (1) EP2468907A4 (zh)
JP (1) JP2012524837A (zh)
CN (1) CN101525709B (zh)
AU (1) AU2010239014B2 (zh)
CA (1) CA2773050A1 (zh)
RU (1) RU2550063C2 (zh)
WO (1) WO2010121517A1 (zh)

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US20140319956A1 (en) * 2013-04-26 2014-10-30 GM Global Technology Operations LLC Aluminum alloy rotor for an electromagnetic device
CN104532067A (zh) * 2014-12-12 2015-04-22 华北电力大学 一种非热处理型中强度铝合金导体材料及其制备方法
CN113151716A (zh) * 2021-03-08 2021-07-23 上海工程技术大学 一种电缆屏蔽用Al-Fe-Mg-Cu系铝合金及其制备方法
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US20140319956A1 (en) * 2013-04-26 2014-10-30 GM Global Technology Operations LLC Aluminum alloy rotor for an electromagnetic device
US9601978B2 (en) * 2013-04-26 2017-03-21 GM Global Technology Operations LLC Aluminum alloy rotor for an electromagnetic device
CN104532067A (zh) * 2014-12-12 2015-04-22 华北电力大学 一种非热处理型中强度铝合金导体材料及其制备方法
WO2021206444A1 (ko) * 2020-04-08 2021-10-14 주식회사 큐프럼 머티리얼즈 배선막 제조 방법, 배선막 및 이를 포함하는 표시 장치
CN113151716A (zh) * 2021-03-08 2021-07-23 上海工程技术大学 一种电缆屏蔽用Al-Fe-Mg-Cu系铝合金及其制备方法
CN113689970A (zh) * 2021-08-23 2021-11-23 安徽中青欣意铝合金电缆有限公司 电动汽车充电用抗曲挠铝合金电缆及其制备方法
CN115595459A (zh) * 2022-09-19 2023-01-13 江苏中天科技股份有限公司（Cn） 高强高导铝合金单丝的制备方法及铝合金单丝
CN116435003A (zh) * 2023-05-24 2023-07-14 中天科技海缆股份有限公司 改性铝合金导体及其生产工艺、改性铝合金导体电缆

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AU2010239014A1 (en) 2011-08-11
CN101525709B (zh) 2010-08-11
RU2011147346A (ru) 2013-05-27
AU2010239014B2 (en) 2014-06-26
RU2550063C2 (ru) 2015-05-10
EP2468907A1 (en) 2012-06-27
CN101525709A (zh) 2009-09-09

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