JP6240424B2 - Method for producing Al alloy conductive wire - Google Patents
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- JP6240424B2 JP6240424B2 JP2013149944A JP2013149944A JP6240424B2 JP 6240424 B2 JP6240424 B2 JP 6240424B2 JP 2013149944 A JP2013149944 A JP 2013149944A JP 2013149944 A JP2013149944 A JP 2013149944A JP 6240424 B2 JP6240424 B2 JP 6240424B2
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- 229910000838 Al alloy Inorganic materials 0.000 title claims description 59
- 238000004519 manufacturing process Methods 0.000 title claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 40
- 238000005491 wire drawing Methods 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 17
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 description 16
- 239000010949 copper Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
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Description
本発明は、Ａｌ合金導電線の製造方法に関する。 The present invention relates to a method for producing an Al alloy conductive wire.
ワイヤーハーネスやバッテリーケーブルなどにおいては、導電線が用いられている。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Ａｌ合金が用いられるようになってきている。 Conductive wires are used in wire harnesses and battery cables. In recent years, Al alloys have been used as an alternative to Cu in order to reduce the weight of conductive wires and reduce costs.
このようなＡｌ合金導電線として、例えば下記特許文献１には、Ｓｉ：０．２〜０．８質量％、Ｆｅ：０．３６〜１．５質量％、Ｃｕ：０．２質量％以下、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Ａｌ合金で形成したＡｌ合金導電線が開示され、下記特許文献１には、このＡｌ合金導電線が可撓性、加工性を備え、高導電で、引張強さと引張伸びを両立することも記載されている。 As such an Al alloy conductive wire, for example, in Patent Document 1 below, Si: 0.2 to 0.8 mass%, Fe: 0.36 to 1.5 mass%, Cu: 0.2 mass% or less, An Al alloy conductive wire formed of an Al alloy containing Mg: 0.45 to 0.9 mass%, Ti: 0.005 to 0.03 mass% with the balance being Al and unavoidable impurities is disclosed. Document 1 also describes that this Al alloy conductive wire has flexibility and workability, is highly conductive, and has both tensile strength and tensile elongation.
しかし、上記特許文献１に記載のＡｌ合金導電線は、引張強さ又は引張伸びの点で更なる改善の余地があった。 However, the Al alloy conductive wire described in Patent Document 1 has room for further improvement in terms of tensile strength or tensile elongation.
本発明は、上記事情に鑑みてなされたものであり、優れた導電性を確保しながら、優れた引張強さと優れた引張伸びとを両立することができるＡｌ合金導電線を製造できるＡｌ合金導電線の製造方法を提供することを目的とする。 The present invention has been made in view of the above circumstances, and is capable of manufacturing an Al alloy conductive wire that can achieve both excellent tensile strength and excellent tensile elongation while ensuring excellent conductivity. It aims at providing the manufacturing method of a wire.
本発明者は上記課題を解決するため鋭意研究を重ねた。その結果、本発明者は、Ａｌ合金のＦｅ、Ｍｇ、Ｓｉ、Ｃｕ、Ｔｉの組成をそれぞれ特定範囲にするだけでは上記課題を解決できない場合があることに気付いた。そこで、本発明者はさらに鋭意研究を重ねた結果、所定の組成を有するＡｌ合金からなる荒引線を所定の温度で熱処理した後に伸線して伸線材を製造すること、得られた伸線材を所定の温度で熱処理することが上記課題を解決する上で重要であることを突き止め、本発明を完成するに至った。 This inventor repeated earnest research in order to solve the said subject. As a result, the present inventor has realized that the above-mentioned problem may not be solved only by setting the compositions of Fe, Mg, Si, Cu, and Ti of the Al alloy within specific ranges. Therefore, as a result of further earnest research, the present inventor manufactured a wire drawing material by drawing a rough drawn wire made of an Al alloy having a predetermined composition after heat treatment at a predetermined temperature, and obtained wire drawing material. Ascertaining that heat treatment at a predetermined temperature is important in solving the above problems, the present invention has been completed.
すなわち本発明は、Ｆｅを０．３６〜１．５質量％、Ｍｇを０．２〜０．９質量％、Ｓｉを０．１５〜０．８質量％、Ｃｕを０〜０．２質量％、Ｔｉを０．００１〜０．０３質量％含み、残部がＡｌおよび不可避的不純物から構成されるＡｌ合金からなる荒引線を製造する荒引線製造工程と、前記荒引線を４００℃以下で熱処理して熱処理済荒引線を得る第一熱処理工程と、前記熱処理済荒引線を伸線して伸線材を得る伸線工程と、前記伸線材を２００℃以上３５０℃以下で熱処理してＡｌ合金導電線を得る第二熱処理工程と、を含むＡｌ合金導電線の製造方法である。 That is, in the present invention, Fe is 0.36 to 1.5 mass%, Mg is 0.2 to 0.9 mass%, Si is 0.15 to 0.8 mass%, and Cu is 0 to 0.2 mass%. , A rough drawn wire manufacturing process for manufacturing a rough drawn wire made of an Al alloy containing 0.001 to 0.03% by mass of Ti and the balance being composed of Al and inevitable impurities, and heat-treating the rough drawn wire at 400 ° C. or less A first heat treatment step for obtaining a heat-treated rough drawn wire; a wire drawing step for drawing the heat-treated rough drawn wire to obtain a drawn material; and a heat treatment of the drawn material at a temperature of 200 ° C. And a second heat treatment step for obtaining an Al alloy conductive wire.
本発明の製造方法によれば、優れた導電性を確保しながら、優れた引張強さと優れた引張伸びとを両立することができるＡｌ合金導電線を製造できる。 According to the production method of the present invention, it is possible to produce an Al alloy conductive wire that can achieve both excellent tensile strength and excellent tensile elongation while ensuring excellent conductivity.
上記Ａｌ合金導電線の製造方法においては、前記第一熱処理工程において、前記荒引線を０．５時間以上熱処理することが好ましい。 In the method for producing an Al alloy conductive wire, it is preferable that the roughing wire is heat-treated for 0.5 hour or more in the first heat treatment step.
この場合、荒引線の熱処理を０．５時間未満行う場合に比べて、伸線工程において熱処理済荒引線を伸線する際、その断線が生じにくくなる。 In this case, the wire breakage is less likely to occur when the heat-treated rough wire is drawn in the wire drawing process than when the heat treatment of the rough wire is performed for less than 0.5 hours.
また、上記Ａｌ合金導電線の製造方法においては、前記第二熱処理工程において、前記伸線材を０．２５時間以上熱処理することが好ましい。 Moreover, in the manufacturing method of the said Al alloy conductive wire, it is preferable to heat-process the said wire drawing material for 0.25 hours or more in said 2nd heat treatment process.
この場合、伸線材の熱処理を０．２５時間未満行う場合に比べて、得られるＡｌ合金導電線の伸び及び導電性がより向上する。 In this case, the elongation and conductivity of the obtained Al alloy conductive wire are further improved as compared with the case where the heat treatment of the wire drawing material is performed for less than 0.25 hours.
本発明によれば、優れた導電性を確保しながら、優れた引張強さと優れた引張伸びとを両立することができるＡｌ合金導電線を製造できるＡｌ合金導電線の製造方法が提供される。 ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the Al alloy conductive wire which can manufacture the Al alloy conductive wire which can make the outstanding tensile strength and the outstanding tensile elongation compatible, ensuring the outstanding electroconductivity is provided.
以下、本発明の実施形態について説明する。 Hereinafter, embodiments of the present invention will be described.
本発明のＡｌ合金導電線の製造方法は、Ｆｅを０．３６〜１．５質量％、Ｍｇを０．２〜０．９質量％、Ｓｉを０．１５〜０．８質量％、Ｃｕを０〜０．２質量％、Ｔｉを０．００１〜０．０３質量％含み、残部がＡｌおよび不可避的不純物から構成されるＡｌ合金からなる荒引線を製造する荒引線製造工程と、荒引線を４００℃以下で熱処理して熱処理済荒引線を得る第一熱処理工程と、熱処理済荒引線を伸線して伸線材を得る伸線工程と、伸線材を３５０℃以下で熱処理してＡｌ合金導電線を得る第二熱処理工程と、を含むＡｌ合金導電線の製造方法である。 The method for producing an Al alloy conductive wire of the present invention is as follows: Fe is 0.36 to 1.5 mass%, Mg is 0.2 to 0.9 mass%, Si is 0.15 to 0.8 mass%, and Cu is A rough drawn wire manufacturing process for producing a rough drawn wire comprising an Al alloy composed of 0 to 0.2 mass%, Ti 0.001 to 0.03 mass%, the balance being composed of Al and inevitable impurities, A first heat treatment step for obtaining a heat-treated rough drawn wire by heat treatment at 400 ° C. or lower; a wire drawing step for drawing a heat-treated rough drawn wire to obtain a drawn wire; A second heat treatment step for obtaining a wire, and a method for producing an Al alloy conductive wire.
上記Ａｌ合金導電線の製造方法によれば、優れた導電性を確保しながら、優れた引張強さと優れた引張伸びとを両立することができるＡｌ合金導電線を製造できる。 According to the method for producing an Al alloy conductive wire, it is possible to produce an Al alloy conductive wire that can achieve both excellent tensile strength and excellent tensile elongation while ensuring excellent conductivity.
以下、荒引線製造工程、第一熱処理工程、伸線工程及び第二熱処理工程について詳細に説明する。 Hereinafter, the rough wire drawing process, the first heat treatment process, the wire drawing process, and the second heat treatment process will be described in detail.
（荒引線製造工程）
荒引線製造工程は、Ｆｅ、Ｍｇ、Ｓｉ、Ｃｕ及びＴｉを含み、残部がＡｌおよび不可避的不純物からなるＡｌ合金からなる荒引線を製造する工程である。
(Rough drawing wire manufacturing process)
The rough drawn wire manufacturing step is a step of manufacturing a rough drawn wire made of an Al alloy containing Fe, Mg, Si, Cu, and Ti, with the balance being Al and inevitable impurities.
上記Ａｌ合金は、Ｆｅを０．３６〜１．５質量％含有する。Ｆｅの含有率が０．３６質量％未満である場合、得られるＡｌ合金導電線は、引張強さが不十分となり、優れた引張強さと優れた引張伸びとを両立することができない。また、Ｆｅの含有率が１．５質量％を超える場合、得られるＡｌ合金導電線の導電性が低下する。 The Al alloy contains 0.36 to 1.5 mass% of Fe. When the Fe content is less than 0.36% by mass, the obtained Al alloy conductive wire has insufficient tensile strength and cannot achieve both excellent tensile strength and excellent tensile elongation. Moreover, when the content rate of Fe exceeds 1.5 mass%, the electroconductivity of the Al alloy conductive wire obtained will fall.
上記Ａｌ合金は、Ｍｇを０．２〜０．９質量％含有する。Ｍｇの含有率が０．２質量％未満である場合、得られるＡｌ合金導電線は、引張強さが不十分となり、優れた引張強さと優れた引張伸びとを両立することができない。また、Ｍｇの含有率が０．９質量％を超える場合、得られるＡｌ合金導電線の導電性が低下する。 The Al alloy contains 0.2 to 0.9% by mass of Mg. When the Mg content is less than 0.2% by mass, the obtained Al alloy conductive wire has insufficient tensile strength and cannot achieve both excellent tensile strength and excellent tensile elongation. On the other hand, when the Mg content exceeds 0.9 mass%, the conductivity of the obtained Al alloy conductive wire is lowered.
上記Ａｌ合金は、Ｓｉを０．１５〜０．８質量％含有する。Ｓｉの含有率が０．１５質量％未満である場合、得られるＡｌ合金導電線は、引張伸びが不十分となり、優れた引張強さと優れた引張伸びとを両立することができない。また、Ｓｉの含有率が０．８質量％を超える場合、得られるＡｌ合金導電線の導電性が低下する。 The Al alloy contains 0.15 to 0.8% by mass of Si. When the Si content is less than 0.15% by mass, the obtained Al alloy conductive wire has insufficient tensile elongation and cannot achieve both excellent tensile strength and excellent tensile elongation. Moreover, when the content rate of Si exceeds 0.8 mass%, the electroconductivity of the Al alloy conductive wire obtained will fall.
上記Ａｌ合金は、Ｃｕを０〜０．２質量％含有する。Ｃｕの含有率が０．２質量％を超える場合、得られるＡｌ合金導電線において、導電性が不十分となる。 The Al alloy contains 0 to 0.2% by mass of Cu. When the Cu content exceeds 0.2% by mass, the resulting Al alloy conductive wire has insufficient conductivity.
上記Ａｌ合金は、Ｔｉを０．００１〜０．０３質量％含有する。Ｔｉの含有率が上記範囲内にあると、Ｔｉの含有率が０．００１質量％未満である場合に比べて、伸線工程において熱処理済荒引線を伸線する際、その断線が生じにくくなる。また、Ｔｉの含有率が０．０３質量％を超える場合、得られるＡｌ合金導電線の導電性が低下する。 The Al alloy contains 0.001 to 0.03% by mass of Ti. When the Ti content is within the above range, disconnection is less likely to occur when the heat-treated rough wire is drawn in the wire drawing process than when the Ti content is less than 0.001% by mass. . Moreover, when the Ti content exceeds 0.03% by mass, the conductivity of the obtained Al alloy conductive wire is lowered.
上記Ａｌ合金において、残部はＡｌ及び不可避的不純物で構成されている。Ａｌは、Ａｌ合金導電線の導電性を良好にするために高い純度を有することが好ましい。そのため、残部におけるＡｌの含有率は９９．７質量％以上であることが好ましい。 In the Al alloy, the balance is composed of Al and inevitable impurities. Al preferably has a high purity in order to improve the conductivity of the Al alloy conductive wire. Therefore, the Al content in the balance is preferably 99.7% by mass or more.
上記荒引線は、Ａｌ合金の連続鋳造圧延やビレット鋳造後の熱間押し出し等により得られる線を言う。 The rough drawing wire refers to a wire obtained by continuous casting and rolling of an Al alloy, hot extrusion after billet casting, or the like.
（第一熱処理工程）
第一熱処理工程は、上記のようにして得られた荒引線を４００℃以下で熱処理して熱処理済荒引線を得る工程である。荒引線の熱処理温度が４００℃を超える場合、得られるＡｌ合金導電線は、引張強さが不十分となり、優れた引張強さと優れた引張伸びとを両立させることができない。熱処理温度は３５０℃以下であることが好ましく、３００℃以下であることがより好ましい。但し、熱処理温度は、２００℃以上であることが好ましい。この場合、熱処理温度が２００℃未満である場合に比べて、伸線工程において、熱処理済荒引線を伸線する際、その断線が発生しにくく、伸線工程をよりスムーズに行うことができる。
(First heat treatment process)
The first heat treatment step is a step of obtaining a heat-treated rough drawn wire by heat-treating the rough drawn wire obtained as described above at 400 ° C. or lower. When the heat treatment temperature of the rough drawn wire exceeds 400 ° C., the resulting Al alloy conductive wire has insufficient tensile strength and cannot achieve both excellent tensile strength and excellent tensile elongation. The heat treatment temperature is preferably 350 ° C. or lower, and more preferably 300 ° C. or lower. However, the heat treatment temperature is preferably 200 ° C. or higher. In this case, compared with the case where the heat treatment temperature is less than 200 ° C., the wire drawing process is less likely to occur when the heat-treated rough drawn wire is drawn in the wire drawing process, and the wire drawing process can be performed more smoothly.
第一熱処理工程においては、荒引線を０．５時間以上熱処理することが好ましい。この場合、荒引線の熱処理を０．５時間未満で行う場合に比べて、伸線工程において熱処理済荒引線を伸線する際、その断線が発生しにくくなる。熱処理時間は１時間以上であることがより好ましく、３時間以上であることがさらに好ましい。但し、荒引線の熱処理時間は１００時間以下であることが好ましい。この場合、得られるＡｌ合金導電線の製造効率がより向上する。 In the first heat treatment step, it is preferable to heat the rough wire for 0.5 hour or more. In this case, the wire breakage is less likely to occur when the heat-treated rough wire is drawn in the wire drawing process than when the heat treatment of the rough wire is performed in less than 0.5 hours. The heat treatment time is more preferably 1 hour or longer, and further preferably 3 hours or longer. However, it is preferable that the heat treatment time of the rough wire is 100 hours or less. In this case, the production efficiency of the obtained Al alloy conductive wire is further improved.
（伸線工程）
伸線工程は、上記のようにして得られる熱処理済荒引線を伸線して伸線材を得る工程である。伸線工程において、伸線は通常、冷間伸線で行えばよい。
(Drawing process)
The wire drawing step is a step of drawing a heat-treated rough drawn wire obtained as described above to obtain a wire drawing material. In the wire drawing step, the wire drawing is usually performed by cold drawing.
（第二熱処理工程）
第二熱処理工程は、上記のようにして得られた伸線材を３５０℃以下で熱処理してＡｌ合金導電線を得る工程である。伸線材の熱処理温度が３５０℃を超える場合、得られるＡｌ合金導電線の導電性が低下する。伸線材の熱処理温度は３００℃以下であることが好ましく、２５０℃以下であることがより好ましい。但し、伸線材の熱処理温度は２００℃以上であることが好ましい。
(Second heat treatment process)
The second heat treatment step is a step of obtaining an Al alloy conductive wire by heat-treating the drawn wire obtained as described above at 350 ° C. or lower. When the heat processing temperature of a wire drawing material exceeds 350 degreeC, the electroconductivity of the Al alloy conductive wire obtained will fall. The heat treatment temperature of the wire drawing material is preferably 300 ° C. or lower, and more preferably 250 ° C. or lower. However, the heat treatment temperature of the wire drawing material is preferably 200 ° C. or higher.
第二熱処理工程においては、伸線材を０．２５時間以上熱処理することが好ましい。この場合、伸線材の熱処理を０．２５時間未満行う場合に比べて、伸び及び導電性がより向上する。伸線材の熱処理時間は１時間以上であることがより好ましく、３時間以上であることがさらに好ましい。但し、熱処理時間は３０時間以下であることが好ましい。 In the second heat treatment step, the wire drawing material is preferably heat treated for 0.25 hours or longer. In this case, the elongation and conductivity are further improved as compared with the case where the heat treatment of the wire drawing material is performed for less than 0.25 hours. The heat treatment time of the wire drawing material is more preferably 1 hour or more, and further preferably 3 hours or more. However, the heat treatment time is preferably 30 hours or less.
以下、本発明の内容を実施例及び比較例を挙げてより具体的に説明するが、本発明は、以下の実施例に限定されるものではない。 Hereinafter, although the content of the present invention will be described more specifically with reference to examples and comparative examples, the present invention is not limited to the following examples.
（実施例１〜２８及び比較例１〜１６）
先ず、下記表１〜３に示される合金組成のＡｌ合金を、プロペルチ法で連続鋳造圧延することによって直径９．８ｍｍの荒引線を得た。次に、この荒引線を、表１〜３の「第一熱処理工程」の欄に示される温度で「第一熱処理工程」の欄に示される時間、熱処理した。こうして熱処理済荒引線を得た。続いて、熱処理済荒引線を直径が０．３３ｍｍとなるまで伸線し、伸線材を得た。次に、この伸線材を、表１〜３の「第二熱処理工程」の欄に示される温度で「第二熱処理工程」の欄に示される時間、熱処理した。こうして実施例１〜２８及び比較例１〜１６のＡｌ合金導電線を作製した。
First, an Al alloy having an alloy composition shown in the following Tables 1 to 3 was continuously cast and rolled by a Properchi method to obtain a rough drawn wire having a diameter of 9.8 mm. Next, this rough drawn wire was heat-treated at the temperature indicated in the “first heat treatment step” column of Tables 1 to 3 for the time indicated in the “first heat treatment step” column. A heat-treated rough drawn wire was thus obtained. Subsequently, the heat-treated rough drawn wire was drawn until the diameter became 0.33 mm to obtain a drawn material. Next, this wire was heat-treated at the temperature indicated in the “second heat treatment step” column of Tables 1 to 3 for the time indicated in the “second heat treatment step” column. Thus, Al alloy conductive wires of Examples 1 to 28 and Comparative Examples 1 to 16 were produced.
［特性評価］
（導電性）
実施例１〜２８及び比較例１〜１６のＡｌ合金導電線について導電率を、ＪＩＳ Ｃ３００２に準拠して測定し、この導電率を導電性の指標とした。結果を表１〜３に示す。なお、表１〜３において、導電率が５８％ＩＡＣＳ以上のものを合格とし、５８％ＩＡＣＳ未満のものを不合格とした。
[Characteristic evaluation]
(Conductivity)
For the Al alloy conductive wires of Examples 1 to 28 and Comparative Examples 1 to 16, the conductivity was measured according to JIS C3002, and this conductivity was used as an index of conductivity. The results are shown in Tables 1-3. In Tables 1 to 3, those having an electrical conductivity of 58% IACS or higher were accepted, and those having a conductivity of less than 58% IACS were rejected.
（引張強さ及び引張伸び）
実施例１〜２８及び比較例１〜１６のＡｌ合金導電線についてＪＩＳ Ｃ３００２に準拠した引張試験により引張強さ及び引張伸びを測定した。結果を表１〜３に示す。なお、引張強さについては、引張強さの値が１４０ＭＰａ以上であるものを合格とし、１４０ＭＰａ未満であるものを不合格とした。また、引張伸びについては、引張伸びの値が１０％以上であるものを合格とし、１０％未満であるものを不合格とした。
(Tensile strength and tensile elongation)
Tensile strength and tensile elongation of the Al alloy conductive wires of Examples 1 to 28 and Comparative Examples 1 to 16 were measured by a tensile test based on JIS C3002. The results are shown in Tables 1-3. In addition, about tensile strength, the thing whose value of tensile strength is 140 Mpa or more was set as the pass, and the thing below 140 Mpa was set as the rejection. As for the tensile elongation, those having a tensile elongation value of 10% or more were accepted, and those having a value of less than 10% were rejected.
ここで、引張強さの合格基準を１４０ＭＰａとしたのは、以下の理由によるものである。すなわち、軟銅線と同等の引張強さ（約２１０ＭＰａ）を断面積１．５倍のＡｌ合金導電線で実現するための引張強さは、２１０ＭＰａ×１／１．５＝１４０ＭＰａであるからである。なお、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、導電線を十分に軽量化することができる。 Here, the reason why the acceptance criterion of the tensile strength is 140 MPa is as follows. That is, the tensile strength for realizing the tensile strength equivalent to the annealed copper wire (about 210 MPa) with the Al alloy conductive wire having a cross-sectional area of 1.5 times is 210 MPa × 1 / 1.5 = 140 MPa. . Even if the cross-sectional area is 1.5 times, since the density of aluminum is 2.7 g / cm 3 and the density of copper is 8.9 g / cm 3 , the conductive wire can be sufficiently reduced in weight.
表１〜３に示すように、実施例１〜２８のＡｌ合金導電線は、導電性、引張強さ及び引張伸びの全ての点で合格基準を満たしていた。一方、比較例１〜１６のＡｌ合金導電線は、導電性、引張強さ及び引張伸びのうち、少なくとも１つの点で合格基準を満たしていなかった。 As shown in Tables 1 to 3, the Al alloy conductive wires of Examples 1 to 28 satisfied the acceptance criteria in all points of conductivity, tensile strength, and tensile elongation. On the other hand, the Al alloy conductive wires of Comparative Examples 1 to 16 did not satisfy the acceptance criteria in at least one of the electrical conductivity, the tensile strength, and the tensile elongation.
以上より、本発明のＡｌ合金導電線の製造方法によれば、優れた導電性を確保しながら、優れた引張強さと優れた引張伸びとを両立することができるＡｌ合金導電線が製造できることが確認された。 As mentioned above, according to the manufacturing method of the Al alloy conductive wire of the present invention, it is possible to manufacture an Al alloy conductive wire that can achieve both excellent tensile strength and excellent tensile elongation while ensuring excellent conductivity. confirmed.
Claims (3)
前記荒引線を４００℃以下で熱処理して熱処理済荒引線を得る第一熱処理工程と、
前記熱処理済荒引線を伸線して伸線材を得る伸線工程と、
前記伸線材を２００℃以上３５０℃以下で熱処理してＡｌ合金導電線を得る第二熱処理工程と、
を含むＡｌ合金導電線の製造方法。 Fe 0.36 to 1.5 mass%, Mg 0.2 to 0.9 mass%, Si 0.15 to 0.8 mass%, Cu 0 to 0.2 mass%, Ti 0.1%. A rough drawn wire manufacturing process for manufacturing a rough drawn wire made of an Al alloy including 001 to 0.03 mass%, the balance being composed of Al and inevitable impurities,
A first heat treatment step of obtaining a heat-treated rough drawn wire by heat-treating the rough drawn wire at 400 ° C. or lower;
A wire drawing step of drawing the heat-treated rough drawn wire to obtain a wire drawing material;
A second heat treatment step for obtaining an Al alloy conductive wire by heat-treating the wire drawing material at 200 ° C. or more and 350 ° C. or less;
The manufacturing method of the Al alloy conductive wire containing this.
The method for producing an Al alloy conductive wire according to claim 1 or 2, wherein in the second heat treatment step, the wire drawing material is heat-treated for 0.25 hours or more.
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