JP2010265509A - Al ALLOY AND ELECTROCONDUCTIVE WIRE OF Al ALLOY - Google Patents
Al ALLOY AND ELECTROCONDUCTIVE WIRE OF Al ALLOY Download PDFInfo
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- JP2010265509A JP2010265509A JP2009117519A JP2009117519A JP2010265509A JP 2010265509 A JP2010265509 A JP 2010265509A JP 2009117519 A JP2009117519 A JP 2009117519A JP 2009117519 A JP2009117519 A JP 2009117519A JP 2010265509 A JP2010265509 A JP 2010265509A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 58
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 6
- 229910052749 magnesium Inorganic materials 0.000 abstract description 6
- 229910052719 titanium Inorganic materials 0.000 abstract description 6
- 229910052710 silicon Inorganic materials 0.000 abstract description 4
- 238000003483 aging Methods 0.000 description 15
- 239000010949 copper Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000011777 magnesium Substances 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- 238000012545 processing Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 238000005482 strain hardening Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910019018 Mg 2 Si Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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- Conductive Materials (AREA)
- Non-Insulated Conductors (AREA)
Abstract
Description
本発明は、ワイヤハーネスやバッテリーケーブル等の導電体に好適に用いられるＡｌ合金導電線に関する。 The present invention relates to an Al alloy conductive wire suitably used for a conductor such as a wire harness or a battery cable.
従来、導電線にはＣｕが用いられてきたが、近年、導電線の軽量化、コストダウンのために、Ｃｕの代替として、純Ａｌ或いはＡｌ合金が提案されており、純Ａｌ或いはＡｌ合金で高強度、高導電の導電線が求められるため、ＪＩＳの１０００系又は６０００系のＡｌ合金が用いられている。 Conventionally, Cu has been used for conductive wires, but in recent years, pure Al or Al alloys have been proposed as an alternative to Cu in order to reduce the weight of conductive wires and reduce costs. Since high-strength and high-conductivity conductive wires are required, JIS 1000 series or 6000 series Al alloys are used.
ここで、導電線として使用するため、Ａｌ合金導電線には、可撓性、加工性が必要であり、高導電で、引張強さと伸びの両立が必要である。 Here, since it is used as a conductive wire, the Al alloy conductive wire needs flexibility and workability, is highly conductive, and requires both tensile strength and elongation.
しかし、ＪＩＳの１０００系又は６０００系のＡｌ合金を使用した導電線では、導電率は満たすことが出来る場合があるが、引張強さと伸びの両立は困難であった。 However, in a conductive wire using a JIS 1000 or 6000 series Al alloy, the electrical conductivity may be satisfied, but it is difficult to achieve both tensile strength and elongation.
そこで、ＪＩＳの６０００系のＡｌ合金の改善が提案され（特許文献１、２参照）、又、ＪＩＳの１０００系の強度と伸びを改善した合金として、ＪＩＳの８０００系のＡｌ合金、例えばＪＩＳの８０２１や８０７９がある。 Therefore, improvement of JIS 6000 series Al alloy has been proposed (see Patent Documents 1 and 2), and JIS 8000 series Al alloy, such as JIS There are 8021 and 8079.
しかし、上記特許文献に記載されている改善した６０００系のＡｌ合金或いは上記８０００系のＡｌ合金を使用した導電線でも、引張強さと伸びの両立は困難であった。 However, even with the conductive wire using the improved 6000 series Al alloy or the 8000 series Al alloy described in the above patent document, it is difficult to achieve both tensile strength and elongation.
そこで、本発明は、導電線を形成するためのＡｌ合金であって、そのＡｌ合金で形成される導電線が、可撓性、加工性を備え、高導電で、引張強さと伸びが両立するＡｌ合金を提供すること、当該Ａｌ合金を使用した導電線、導電体を提供することを目的とする。 Therefore, the present invention is an Al alloy for forming a conductive wire, and the conductive wire formed of the Al alloy has flexibility and workability, is highly conductive, and has both tensile strength and elongation. An object is to provide an Al alloy and to provide a conductive wire and a conductor using the Al alloy.
上記課題を解決するための本発明は、Ｓｉ：０．２〜０．８質量％、Ｆｅ：０．３６〜１．５質量％、Ｍｇ：０．４５〜０．９質量％、Ｔｉ：０．００５〜０．０３質量％を含み、残部がＡｌ及び不可避的不純物からなることを特徴とするＡｌ合金である。 The present invention for solving the above problems is as follows: Si: 0.2 to 0.8 mass%, Fe: 0.36 to 1.5 mass%, Mg: 0.45 to 0.9 mass%, Ti: 0 0.005 to 0.03% by mass, and the balance is made of Al and inevitable impurities.
又、前記Ａｌ合金には、更に、Ｃｕを含み、Ｃｕ：０．２質量％以下であることを特徴とするＡｌ合金である。 Further, the Al alloy further includes Cu and is Cu: 0.2% by mass or less.
又、上記のＡｌ合金で形成されたことを特徴とするＡｌ合金導電線である。このＡｌ合金導電線は、ＪＩＳ Ｔ５、ＪＩＳ Ｔ６、ＪＩＳ Ｔ８又はＪＩＳ Ｔ１０のうち何れかの調質処理を行い形成されることが好ましい。 Moreover, it is an Al alloy conductive wire characterized by being formed of the above Al alloy. The Al alloy conductive wire is preferably formed by performing a tempering treatment of any one of JIS T5, JIS T6, JIS T8 or JIS T10.
更に、上記のＡｌ合金導電線を用いて形成したことを特徴とする導電体であり、導電体としてワイヤハーネスやバッテリーケーブル等が含まれる。 Furthermore, it is a conductor formed using the Al alloy conductive wire, and includes a wire harness, a battery cable, and the like as the conductor.
以上のような本発明によれば、Ａｌ合金を使用した導電線において、可撓性、加工性を備え、高導電で、引張強さと伸びが両立するＡｌ合金及びＡｌ合金導電線を提供することが可能となった。又、Ａｌ合金を使用した導電線において、可撓性、加工性を備え、高導電で、引張強さと伸びが両立するＡｌ合金導電体を提供することが可能となった。 According to the present invention as described above, a conductive wire using an Al alloy is provided with an Al alloy and an Al alloy conductive wire having flexibility and workability, high conductivity, and having both tensile strength and elongation. Became possible. In addition, it is possible to provide an Al alloy conductor that has flexibility and workability, is highly conductive, and has both tensile strength and elongation in a conductive wire using an Al alloy.
以下本発明の実施の形態を説明する。本発明のＡｌ合金は、Ｓｉ（珪素）：０．２〜０．８質量％、Ｆｅ（鉄）：０．３６〜１．５質量％、Ｍｇ（マグネシウム）：０．４５〜０．９質量％、Ｔｉ（チタン）：０．００５〜０．０３質量％を含み、残部がＡｌ（アルミニウム）及び不可避的不純物からなる。又、本発明のＡｌ合金は、更に、０．２質量％以下の範囲でＣｕを含んでもよい。本発明のＡｌ合金は、様々な用途に使用することが出来るが、特に導電線用として、好適に用いることが出来る。 Embodiments of the present invention will be described below. The Al alloy of the present invention has Si (silicon): 0.2 to 0.8 mass%, Fe (iron): 0.36 to 1.5 mass%, Mg (magnesium): 0.45 to 0.9 mass% %, Ti (titanium): 0.005 to 0.03 mass%, and the balance is made of Al (aluminum) and inevitable impurities. Further, the Al alloy of the present invention may further contain Cu in the range of 0.2% by mass or less. Although the Al alloy of the present invention can be used for various applications, it can be suitably used particularly for conductive wires.
本発明のＡｌ合金は、Ｓｉを０．２〜０．８質量％含有する。Ｓｉの含有量を０．２〜０．８質量％とするのは、Ｓｉの含有量が０．２質量％より少ないと、引張強度と伸びの両立が出来ず、０．８質量％より多いと、導電線への加工時に、割れや断線が発生する虞があるからである。 The Al alloy of the present invention contains 0.2 to 0.8 mass% of Si. The Si content is set to 0.2 to 0.8% by mass. If the Si content is less than 0.2% by mass, the tensile strength and the elongation cannot be compatible, and the Si content is more than 0.8% by mass. This is because there is a possibility that breakage or disconnection may occur during processing of the conductive wire.
本発明のＡｌ合金は、Ｆｅを０．３６〜１．５質量％含有する。Ｆｅの含有量を０．３６〜１．５質量％とするのは、Ｆｅの含有量が０．３６質量％より少ないと、引張強度と伸びの両立が出来ず、１．５質量％より多いと、導電率が低下するからである。 The Al alloy of the present invention contains 0.36 to 1.5% by mass of Fe. The reason why the Fe content is 0.36 to 1.5% by mass is that when the Fe content is less than 0.36% by mass, both the tensile strength and the elongation cannot be achieved, and the Fe content is more than 1.5% by mass. This is because the conductivity decreases.
本発明のＡｌ合金は、Ｍｇを０．４５〜０．９質量％含有する。Ｍｇの含有量を０．４５〜０．９質量％とするのは、Ｍｇの含有量が０．４５質量％より少ないと、引張強度と伸びの両立が出来ず、０．９質量％より多いと、導電線への加工時に、割れや断線が発生する虞があるからである。 The Al alloy of the present invention contains 0.45 to 0.9% by mass of Mg. The reason why the Mg content is 0.45 to 0.9% by mass is that when the Mg content is less than 0.45% by mass, both the tensile strength and the elongation cannot be achieved, and the content is more than 0.9% by mass. This is because there is a possibility that breakage or disconnection may occur during processing of the conductive wire.
本発明のＡｌ合金は、Ｔｉを０．００５〜０．０３質量％含有する。Ｔｉの含有量を０．００５〜０．０３質量％とするのは、Ｔｉの含有量が０．００５質量％より少ないと、引張強度と伸びの両立が出来ず、０．０３質量％より多いと、導電率が低下するからである。 The Al alloy of the present invention contains 0.005 to 0.03% by mass of Ti. The content of Ti is set to 0.005 to 0.03% by mass. When the content of Ti is less than 0.005% by mass, it is impossible to achieve both tensile strength and elongation, and the content is more than 0.03% by mass. This is because the conductivity decreases.
又、本発明のＡｌ合金は、Ｃｕを含有しなくてもよいが、含有することが好ましい。Ｃｕを含有することにより、引張強さを向上させることが出来る。Ｃｕを含有する場合には、０．２質量％以下を含有する。Ｃｕの含有量を０．２質量％以下とするのは、Ｃｕの含有量が０．２質量％より多いと、導電線への加工時に、割れや断線が発生する虞があるからである。 Moreover, although Al alloy of this invention does not need to contain Cu, it is preferable to contain. By containing Cu, the tensile strength can be improved. When it contains Cu, it contains 0.2 mass% or less. The reason why the Cu content is 0.2% by mass or less is that when the Cu content is more than 0.2% by mass, there is a possibility that cracking or disconnection may occur during processing of the conductive wire.
又、残部はＡｌ及び不可避的不純物が含有されている。Ａｌは、導電線の導電率を良好にするために高い純度が望ましく、純度９９．９５％以上が好ましい。又、不可避的不純物は、導電性を低下させる原因となるので、その含有量は出来るだけ少なくすることが好ましい。 The balance contains Al and inevitable impurities. Al is desirable to have a high purity in order to improve the conductivity of the conductive wire, and a purity of 99.95% or more is preferable. Moreover, since inevitable impurities cause a decrease in conductivity, it is preferable to reduce the content thereof as much as possible.
次に、本発明のＡｌ合金導電線の、上述のような本発明のＡｌ合金を用いた製造について説明する。先ず、上述のような範囲の組成のＳｉ、Ｆｅ、Ｍｇ、Ｔｉ及びＡｌ、或いは更にＣｕを溶解し、連続鋳造機にて鋳造して、キャストバーを作製する。そして、キャストバーを熱間圧延してワイヤロッドを作製する。通常は連続鋳造機に熱間圧延機がタンデムに接続されている。このワイヤロッドの線径は特に限定されないが、９．０〜１０．０ｍｍ程度とすることが出来る。 Next, production of the Al alloy conductive wire of the present invention using the above-described Al alloy of the present invention will be described. First, Si, Fe, Mg, Ti and Al, or further Cu having a composition in the above-described range are dissolved and cast by a continuous casting machine to produce a cast bar. And a cast rod is hot-rolled and a wire rod is produced. Usually, a hot rolling mill is connected to a continuous casting machine in tandem. The wire diameter of the wire rod is not particularly limited, but can be about 9.0 to 10.0 mm.
このワイヤロッドを冷間伸線加工し、線径を５．０〜６．０ｍｍ程度まで伸線し、次いで溶体化処理を行う。この溶体化処理は、添加元素を均質に多く固溶させるために行うもので、５００〜５８０℃で行うことが好ましい。５００℃より低い温度で溶体化処理を行うと、固溶量が少なく、添加元素の均質化が不充分となる場合があり、５８０℃より高いと、線が部分的に溶解してしまう虞があるからである。尚、好ましい処理時間としては、５５０℃で行なう場合には、２時間３０分〜３時間３０分、より好ましくは３時間である。この溶体化処理の後、線を水冷することが好ましい。この水冷により、添加元素を多く固溶した状態に保つことが出来、水冷を行なわない場合には、固溶していた元素が冷却中に析出してしまうからである。 This wire rod is cold drawn, drawn to a wire diameter of about 5.0 to 6.0 mm, and then subjected to a solution treatment. This solution treatment is performed in order to dissolve the added elements uniformly and in a large amount, and is preferably performed at 500 to 580 ° C. When the solution treatment is performed at a temperature lower than 500 ° C., the amount of solid solution is small, and the homogenization of the additive element may be insufficient. When the temperature is higher than 580 ° C., the wire may be partially dissolved. Because there is. The preferable treatment time is 2 hours 30 minutes to 3 hours 30 minutes, more preferably 3 hours when the treatment is performed at 550 ° C. After the solution treatment, the wire is preferably water cooled. This is because, by this water cooling, it is possible to keep a large amount of added elements in a solid solution state, and when water cooling is not performed, the solid solution elements are precipitated during cooling.
次に、更に冷間伸線加工を行い、所望の線径の素線を作製する。素線の線径としては、通常、０．３〜０．４ｍｍ程度である。 Next, cold drawing is further performed to produce a strand having a desired wire diameter. The wire diameter of the strand is usually about 0.3 to 0.4 mm.
そして、時効硬化処理を行う。この時効硬化処理は、過剰に固溶した添加元素を微細に析出させる処理である。この時効硬化処理により、Ｍｇ２Ｓｉが析出する。この時効硬化処理は、２００〜２５０℃で行うことが好ましい。２００℃より低い温度で時効硬化処理を行うと、析出が不充分であり、２５０℃より高い温度で時効硬化処理を行うと、粗大粒子が析出してしまうからである。尚、好ましい時効硬化処理時間としては、２時間３０分〜３時間３０分、より好ましくは３時間である。 And an age hardening process is performed. This age hardening treatment is a treatment for finely precipitating additive elements that are excessively dissolved in solid solution. By this age hardening treatment, Mg 2 Si is precipitated. This age hardening treatment is preferably performed at 200 to 250 ° C. This is because if the age hardening treatment is performed at a temperature lower than 200 ° C., the precipitation is insufficient, and if the age hardening treatment is performed at a temperature higher than 250 ° C., coarse particles are precipitated. In addition, as preferable age hardening processing time, it is 2 hours 30 minutes-3 hours 30 minutes, More preferably, it is 3 hours.
尚、Ａｌ合金導電線の製造工程は、上述の方法に限定されず、圧延加工でもよいが、押出加工でもよく、又、伸線加工は、冷間加工でなくてもよい等、公知の他の方法を採用することが出来、特に調質処理としてもその処理方法は特に限定されないが、引張強度と伸び更には導電率をより高めるために、溶体化処理後に冷間加工を行い、更に人工時効硬化処理を施す方法（ＪＩＳ Ｔ８）、溶体化処理後に冷間加工を行わずに人工時効硬化処理を施す方法（ＪＩＳ Ｔ６）、高温加工から冷却後冷間加工を行い、更に人工時効硬化処理を施す方法（ＪＩＳ Ｔ１０）、高温加工から冷却後に冷間加工を行わずに人工時効硬化処理を施す方法（ＪＩＳ Ｔ５）が好ましい。 In addition, the manufacturing process of the Al alloy conductive wire is not limited to the above-described method, and may be rolling, but may be extrusion, and the wire drawing may not be cold working. In particular, the tempering process is not particularly limited, but in order to further increase the tensile strength, elongation and conductivity, cold working is performed after solution treatment, and further artificial Method of applying age hardening treatment (JIS T8), Method of applying artificial age hardening treatment without performing cold working after solution treatment (JIS T6), Cold working after cooling from high temperature processing, and further artificial age hardening treatment (JIS T10) and a method of applying an artificial age hardening treatment without performing cold working after cooling from high temperature processing (JIS T5) are preferable.
このように作製された導電線は、例えば、複数本撚り合わせて撚線としたり、複数本の撚線を更に撚り合わせた撚線としたり、これらの撚線を円形に圧縮した圧縮導体として使用することが出来、これらの撚線や圧縮導体に、合成樹脂を被覆する等の加工が施され、ワイヤハーネスやバッテリーケーブル等の導電体を形成することが出来る。 The conductive wire thus produced can be used, for example, as a compressed conductor obtained by twisting a plurality of twisted wires into a twisted wire, twisting a plurality of twisted wires into a twisted wire, or compressing these twisted wires into a circular shape. These twisted wires and compressed conductors can be processed such as covering with a synthetic resin to form a conductor such as a wire harness or a battery cable.
Ｓｉ、Ｆｅ、Ｃｕ、Ｍｇ、Ｔｉ及びＡｌを表１の組成で溶解し、連続鋳造機にて鋳造して、線径２５ｍｍのキャストバーを作製し、キャストバーを熱間圧延して線径９．５ｍｍのワイヤロッドを作製し、このワイヤロッドを冷間伸線加工し、線径を５．５ｍｍまで伸線し、５５０℃で３時間溶体化処理を行い、この溶体化処理の後、線を水冷し、更に０．３３ｍｍまで冷間伸線加工を行った。このＡｌ合金線を２００〜２５０℃で３時間焼きなましをして、時効硬化処理を施した。 Si, Fe, Cu, Mg, Ti and Al were melted with the composition shown in Table 1, and cast with a continuous casting machine to produce a cast bar with a wire diameter of 25 mm. The cast bar was hot-rolled to obtain a wire diameter of 9 A 5 mm wire rod was manufactured, the wire rod was cold drawn, the wire diameter was drawn to 5.5 mm, and solution treatment was performed at 550 ° C. for 3 hours. Was cooled with water and further cold drawn to 0.33 mm. This Al alloy wire was annealed at 200 to 250 ° C. for 3 hours and subjected to age hardening.
このようにして作製したＡｌ合金導電線の特性評価として、ＪＩＳＣ３００２に準拠して、２０℃での引張試験と、２０℃での導電率測定を行なった。結果を表１に示す。判定は、引張強さが１４０ＭＰａ以上、伸びが１０％以上、導電率が５５％ＩＡＣＳ以上の総てを満たすものを合格（表中「○」で示す。）とし、１つでも満たさないものは不合格（表中「×」で示す。）とした。ここで、引張強さを１４０ＭＰａ以上で合格としたのは、軟銅線と同等の引張強さ（約２１０ＭＰａ）を断面積１．５倍のＡｌ合金線で実現するための引張強さは、２１０ＭＰａ×２／３＝１４０ＭＰａであるからである。尚、断面積を１．５倍にしても、アルミニウムの密度は２．７ｇ／ｃｍ３、銅の密度は８．９ｇ／ｃｍ３なので、軽量化が可能である。 As an evaluation of the characteristics of the Al alloy conductive wire thus produced, a tensile test at 20 ° C. and a conductivity measurement at 20 ° C. were performed in accordance with JISC3002. The results are shown in Table 1. As for the judgment, those satisfying all of the tensile strength of 140 MPa or more, the elongation of 10% or more, and the conductivity of 55% IACS or more are acceptable (indicated by “◯” in the table), and those that do not satisfy even one It was determined to be rejected (indicated by “x” in the table). Here, the tensile strength of 140 MPa or higher was accepted, and the tensile strength for realizing the tensile strength equivalent to that of an annealed copper wire (about 210 MPa) with an Al alloy wire having a cross-sectional area of 1.5 times was 210 MPa. This is because × 2/3 = 140 MPa. Even when the cross-sectional area is 1.5 times, the density of aluminum is 2.7 g / cm 3 and the density of copper is 8.9 g / cm 3, so the weight can be reduced.
本発明のＡｌ合金導電線は、実施例１〜１２に示すように、引張強さが１４０ＭＰａ以上、伸びが１０％以上、導電率が５５％ＩＡＣＳ以上の総てを満たし、判定は、合格であった。一方、本発明の条件を満たさないＡｌ合金導電線は、比較例１〜１６に示すように、引張強さ、伸び、或いは導電率のいずれかが目標値に達せず、或いは加工時に割れが発生し、判定は、不合格であった。又、比較例では、時効硬化処理の温度が高いと伸びは向上するが、引張強さが低下し、時効硬化処理の温度が低いと引張強さは向上するが、伸びが低下してしまうが、実施例では、時効硬化処理の温度に関係なく、引張強さと伸びが目標値に達している。尚、比較例１及び２のＡｌ合金は、ＪＩＳ６０６３であり、比較例３及び４のＡｌ合金は、特許文献１に記載の合金であり、比較例５及び６のＡｌ合金は、特許文献２に記載の合金である。 As shown in Examples 1 to 12, the Al alloy conductive wire of the present invention satisfies all of the tensile strength of 140 MPa or more, the elongation of 10% or more, and the conductivity of 55% IACS or more. there were. On the other hand, as shown in Comparative Examples 1 to 16, an Al alloy conductive wire that does not satisfy the conditions of the present invention does not reach any of the target values of tensile strength, elongation, or conductivity, or cracks occur during processing. However, the judgment was unacceptable. In the comparative example, when the age hardening treatment temperature is high, the elongation is improved, but the tensile strength is lowered, and when the age hardening treatment temperature is low, the tensile strength is improved, but the elongation is lowered. In the examples, the tensile strength and the elongation reach the target values regardless of the temperature of the age hardening treatment. The Al alloys of Comparative Examples 1 and 2 are JIS6063, the Al alloys of Comparative Examples 3 and 4 are those described in Patent Document 1, and the Al alloys of Comparative Examples 5 and 6 are described in Patent Document 2. The described alloy.
本発明のＡｌ合金は、導電線の軽量化、コストダウンを図れ、更に、可撓性、加工性を備え、高導電で、引張強さと伸びが両立するので、導電線に好適に使用でき、更に、本発明のＡｌ合金で形成されたＡｌ合金導電線は、ワイヤハーネスやバッテリーケーブル等の導電体に好適に用いることが出来る。 The Al alloy of the present invention can reduce the weight of the conductive wire and reduce the cost, and further has flexibility and workability, is highly conductive, and has both tensile strength and elongation. Furthermore, the Al alloy conductive wire formed of the Al alloy of the present invention can be suitably used for a conductor such as a wire harness or a battery cable.
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |