JP2883495B2 - Method of manufacturing copper alloy conductor for electric train wire - Google Patents
Method of manufacturing copper alloy conductor for electric train wireInfo
- Publication number
- JP2883495B2 JP2883495B2 JP4171258A JP17125892A JP2883495B2 JP 2883495 B2 JP2883495 B2 JP 2883495B2 JP 4171258 A JP4171258 A JP 4171258A JP 17125892 A JP17125892 A JP 17125892A JP 2883495 B2 JP2883495 B2 JP 2883495B2
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- JP
- Japan
- Prior art keywords
- wire
- working
- copper alloy
- less
- electric train
- 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.)
- Expired - Lifetime
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、電車電線用銅合金導体
の製造方法に関し、電車トロリ線の長寿命化の要求に応
える優れた強度および耐摩耗性を有するトロリ線の製造
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a copper alloy conductor for electric train wires, and more particularly, to a method of manufacturing a trolley wire having excellent strength and wear resistance which meets the demand for extending the life of an electric train trolley wire.
【０００２】[0002]
【従来の技術および発明が解決しようとする課題】従
来、トロリ線用素材として、純銅、あるいは０．３重量
％以下の錫を含む銅合金が使用されてきた。2. Description of the Related Art Conventionally, pure copper or a copper alloy containing less than 0.3% by weight of tin has been used as a material for a trolley wire.
【０００３】一方、電車の高速化に伴い、トロリ線の架
線張力の増強が必要となってきており、そのためトロリ
線用素材として、従来並の導電率を維持しながら高い強
度を有するものが要求されてきている。On the other hand, as the speed of trains increases, it is necessary to increase the overhead wire tension of the trolley wire. Therefore, a material having a high strength while maintaining the same conductivity as that of the conventional trolley wire is required. Have been.
【０００４】本発明は、このような要求に応えるべく、
従来のトロリ素材より高い強度を有し、かつ、導電率の
低減を最小限に抑えた、トロリ素材の製造方法を提供す
るものである。The present invention has been developed to meet such a demand.
An object of the present invention is to provide a method of manufacturing a trolley material having higher strength than a conventional trolley material and minimizing a decrease in conductivity.
【０００５】[0005]
【課題を解決するための手段】本発明に従う電車電線用
銅合金導体の製造方法は、酸素含量が０．１重量％以下
であり、０．２〜０．５重量％の錫を含み、残部が銅と
不可避不純物からなる鋳造材を連続鋳造により得る工程
と、得られる鋳造材に６００℃以上の温度において８０
％以上の加工度で連続的に熱間加工を施し、直径が２４
ｍｍ以上の線材を得る工程と、ついで線材に１５０℃以
下の温度において７０％以上の加工度で冷間加工を施す
工程とを備える。According to the present invention, there is provided a method for producing a copper alloy conductor for electric train wires according to the present invention. Obtaining a cast material consisting of copper and unavoidable impurities by continuous casting;
% Hot working continuously with a working ratio of at least
and a step of performing cold working on the wire at a temperature of 150 ° C. or less at a working ratio of 70% or more.
【０００６】本発明において、熱間加工として熱間圧延
が好ましく施される。In the present invention, hot rolling is preferably performed as hot working.
【０００７】本発明において、錫の含有量を０．２重量
％以上としているのは、トロリ素材としてより高い強度
を得るためであり、錫の含有量を０．５重量％以下とし
ているのは、導電率の低下をより抑えるためである。ま
た、鋳造材における酸素含量を０．１重量％以下とする
ことにより、酸化銅の生成を抑制し、加工時における酸
化銅を起点とした断線を抑制することができる。In the present invention, the tin content is set to 0.2% by weight or more in order to obtain higher strength as a trolley material, and the tin content is set to 0.5% by weight or less. This is for further suppressing the decrease in conductivity. Further, when the oxygen content in the cast material is set to 0.1% by weight or less, generation of copper oxide can be suppressed, and disconnection starting from copper oxide during processing can be suppressed.
【０００８】本発明において、鋳造材に６００℃以上の
温度において８０％以上の熱間加工を施すことにより、
鋳造組織を微細化させ、線材強度を向上させることがで
きる。このような熱間加工を行なうことにより、後に行
なう冷間加工の加工度を高くすることができ、また、高
い加工度での冷間加工による線材強度向上の効果をより
顕著なものにすることができる。また、熱間加工の工程
において得られる線材の直径は２４ｍｍ以上であること
が望ましい。これは、以下の実施例で示すように、熱間
加工後の線材の直径を２４ｍｍ未満、たとえば従来に従
って２２ｍｍ以下にすると、次工程において高い加工度
の冷間加工を受けることが困難になり、高い加工度での
冷間加工による線材の強度向上を図ることができなくな
るからである。In the present invention, by subjecting a cast material to a hot working of 80% or more at a temperature of 600 ° C. or more,
It is possible to refine the casting structure and improve the strength of the wire rod. By performing such hot working, it is possible to increase the working ratio of the cold working performed later, and to make the effect of improving the wire strength by cold working at a high working ratio more remarkable. Can be. Further, the diameter of the wire obtained in the hot working step is desirably 24 mm or more. This is because, as shown in the following examples, if the diameter of the wire after hot working is less than 24 mm, for example, 22 mm or less according to the conventional art, it becomes difficult to receive a high degree of cold working in the next step, This is because the strength of the wire cannot be improved by cold working at a high working ratio.
【０００９】このようにして直径が２４ｍｍ以上の線材
を得た後、次工程において７０％と従来より高い加工度
の冷間加工を施すことにより、従来より高い強度のトロ
リ素材を得ることができる。After obtaining a wire having a diameter of 24 mm or more in this manner, a trolley material having a higher strength than the conventional one can be obtained by performing cold working with a higher working ratio of 70% in the next step than in the conventional case. .
【００１０】本発明に従い、上記組成の鋳造材を連続鋳
造により得る工程と、上記条件の熱間加工を行なう工程
と、上記条件の冷間加工を行なう工程とを組み合わせる
ことによって、製作時の加工性を良好に保ちながら、よ
り高い強度を有しかつ導電率の低減が最小限に抑えられ
たトロリ素材を低コストで製造できる。According to the present invention, by combining the step of obtaining a cast material having the above composition by continuous casting, the step of performing hot working under the above-described conditions, and the step of performing cold working under the above-described conditions, processing during manufacturing is performed. A trolley material having higher strength and a minimum reduction in conductivity can be manufactured at low cost while maintaining good properties.
【００１１】[0011]
【実施例】まず、０．１５〜０．８重量％の錫を含有す
る溶解銅合金を、連続鋳造圧延により、加工度７２％で
熱間圧延し、線材を得た。その後、得られた線材につい
て、加工度７２％で冷間加工を施して、図１に示すよう
な断面形状の、断面積が１７０ｍｍ2 のトロリ線を得
た。First, a molten copper alloy containing 0.15 to 0.8% by weight of tin was hot-rolled by continuous casting and rolling at a working ratio of 72% to obtain a wire. Thereafter, the obtained wire was cold-worked at a working ratio of 72% to obtain a trolley wire having a cross-sectional shape as shown in FIG. 1 and a cross-sectional area of 170 mm 2 .
【００１２】以上の工程に従って得られたトロリ線の強
度と導電率を表１に示す。表１には、種々の錫含有量に
ついて実施を行なった例を示すとともに、従来の製造方
法に従って加工を行なったものを従来例として示してい
る。Table 1 shows the strength and conductivity of the trolley wire obtained according to the above steps. Table 1 shows examples in which various tin contents were carried out, and those which were processed according to a conventional production method as conventional examples.
【００１３】[0013]
【表１】 [Table 1]
【００１４】次に、熱間加工度の影響を見るため、０．
３重量％の錫を含有する溶解銅合金を、表２に示す熱間
加工度で、それぞれ連続鋳造圧延し、線材を得た。その
後、得られた線材に７２％の加工度で冷間加工を施し、
断面積が１７０ｍｍ2 のトロリ線を得た。Next, to see the effect of the degree of hot working,
A molten copper alloy containing 3% by weight of tin was continuously cast and rolled at a hot working degree shown in Table 2 to obtain a wire. Thereafter, the obtained wire is subjected to cold working at a working ratio of 72%,
A trolley wire having a cross-sectional area of 170 mm 2 was obtained.
【００１５】このような工程における冷間加工性を表２
の右欄に示す。表２に示すとおり、熱間加工度が７０％
未満、たとえば６５％となると、冷間加工が困難にな
る。Table 2 shows the cold workability in such a process.
In the right column. As shown in Table 2, the degree of hot working is 70%
If it is less than, for example, 65%, cold working becomes difficult.
【００１６】[0016]
【表２】 [Table 2]
【００１７】次に、冷間加工度の影響を見るため、０．
３重量％の錫を含有する溶解銅合金を、７２％の熱間加
工度で連続鋳造圧延し、線材を得た。その後、得られた
線材について、表３に示すような加工度でそれぞれ冷間
加工を施し、断面積が１７０ｍｍ2 のトロリ線を得た。
それぞれ得られたトロリ線の強度と導電率を表３の右欄
に示す。Next, to see the effect of the degree of cold work,
A molten copper alloy containing 3% by weight of tin was continuously cast and rolled at a hot working degree of 72% to obtain a wire. Thereafter, each of the obtained wires was subjected to cold working at a working ratio as shown in Table 3 to obtain a trolley wire having a cross-sectional area of 170 mm 2 .
The strength and electrical conductivity of the obtained trolley wires are shown in the right column of Table 3.
【００１８】[0018]
【表３】 [Table 3]
【００１９】表１〜表３から明らかなように、７０％以
上の加工度で熱間加工を行なった後、７０％以上の加工
度で冷間加工を行えば、良好な加工性を保ちながら、従
来より高い強度の銅合金トロリ線を得ることができる。As is clear from Tables 1 to 3, after performing hot working at a working ratio of 70% or more and performing cold working at a working ratio of 70% or more, good workability can be maintained. Thus, a copper alloy trolley wire having higher strength than before can be obtained.
【００２０】０．２７〜０．４７重量％の錫を含有する
溶解銅合金を、連続鋳造圧延により、熱間加工度８０％
以上で圧延を行ない、直径が１８〜４０ｍｍの線材をそ
れぞれ得た。なお、得られる鋳造材の酸素含量は０．１
重量％以下であった。その後、４６％〜８５％の加工度
でそれぞれ冷間加工を実施し、断面積が１７０ｍｍ2の
トロリ線を得た。A molten copper alloy containing 0.27 to 0.47% by weight of tin was subjected to continuous casting and rolling to a hot working degree of 80%.
Rolling was performed as described above to obtain wires having a diameter of 18 to 40 mm. Incidentally, the oxygen content of the obtained cast material is 0.1%.
% By weight or less. Thereafter, cold working was performed at a working ratio of 46% to 85%, respectively, to obtain a trolley wire having a cross-sectional area of 170 mm 2 .
【００２１】この一連の工程においてそれぞれ用いられ
た条件を表４に示すとともに、それぞれ得られた線材の
強度および導電率を同表に示す。The conditions used in the series of steps are shown in Table 4, and the strength and electrical conductivity of each obtained wire are shown in the table.
【００２２】[0022]
【表４】 [Table 4]
【００２３】表４から明らかなように、本発明に従う条
件下において、比較的導電率が高く、強度が向上された
トロリ線材を得ることができた。As is evident from Table 4, under the conditions according to the present invention, a trolley wire having relatively high conductivity and improved strength was obtained.
【００２４】[0024]
【発明の効果】以上説明したように、本発明によれば、
良好な加工性を保ちながら、従来より強度の高い銅合金
トロリ線を得ることができる。したがって、本発明によ
れば、優れた強度および耐摩耗性を有し、今日の長寿命
化の要求に応える電車トロリ線を提供することができ
る。As described above, according to the present invention,
A copper alloy trolley wire having higher strength than before can be obtained while maintaining good workability. Therefore, according to the present invention, it is possible to provide a train trolley wire that has excellent strength and wear resistance and can meet today's demand for longer life.
【図１】実施例において得られたトロリ線の断面図であ
る。FIG. 1 is a sectional view of a trolley wire obtained in an example.
１ トロリ線 1 Trolley wire
───────────────────────────────────────────────────── フロントページの続き (72)発明者 奥村 哲郎 大阪市此花区島屋一丁目１番３号 住友 電気工業株式会社 大阪製作所内 (72)発明者 白石 肇 大阪市此花区島屋一丁目１番３号 住友 電気工業株式会社 大阪製作所内 (72)発明者 南条 和弘 大阪市此花区島屋一丁目１番３号 住友 電気工業株式会社 大阪製作所内 (72)発明者 天雲 正造 大阪市此花区島屋一丁目１番３号 住友 電気工業株式会社 大阪製作所内 (56)参考文献 特開 平３−67401（ＪＰ，Ａ) 特開 平３−38335（ＪＰ，Ａ) 特開 平３−31437（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsuro Okumura 1-3-1 Shimaya, Konohana-ku, Osaka-shi Sumitomo Electric Industries, Ltd. Osaka Works (72) Inventor Hajime Shiraishi 1-3-1 Shimaya, Konohana-ku, Osaka-shi No. Sumitomo Electric Industries, Ltd., Osaka Works (72) Inventor Kazuhiro Nanjo 1-3-1, Shimaya, Konohana-ku, Osaka-shi Sumitomo Electric Industries, Ltd. Osaka Works (72) Inventor Shozo Amakuno 1, Shimaya, Konohana-ku, Osaka-shi No. 1-3, Sumitomo Electric Industries, Ltd., Osaka Works (56) References JP-A-3-67401 (JP, A) JP-A-3-38335 (JP, A) JP-A-3-31437 (JP, A)
Claims (1)
０．２〜０．５重量％の錫を含み、残部が銅と不可避不
純物からなる鋳造材を連続鋳造により得る工程と、 前記連続鋳造により得られる前記鋳造材に、６００℃以
上の温度において８０％以上の加工度で連続的に熱間加
工を施し、直径が２４ｍｍ以上の線材を得る工程と、 前記線材に１５０℃以下の温度において７０％以上の加
工度で冷間加工を施す工程とを備える、電車電線用銅合
金導体の製造方法。An oxygen content of 0.1% by weight or less,
A step of obtaining a cast material containing 0.2 to 0.5% by weight of tin and the balance consisting of copper and unavoidable impurities by continuous casting; A step of continuously performing hot working with a working ratio of not less than% to obtain a wire having a diameter of 24 mm or more, and a step of performing cold working on the wire at a temperature of 150 ° C. or less at a working degree of 70% or more. A method for producing a copper alloy conductor for electric train wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4171258A JP2883495B2 (en) | 1992-06-29 | 1992-06-29 | Method of manufacturing copper alloy conductor for electric train wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4171258A JP2883495B2 (en) | 1992-06-29 | 1992-06-29 | Method of manufacturing copper alloy conductor for electric train wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH068759A JPH068759A (en) | 1994-01-18 |
| JP2883495B2 true JP2883495B2 (en) | 1999-04-19 |
Family
ID=15919990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4171258A Expired - Lifetime JP2883495B2 (en) | 1992-06-29 | 1992-06-29 | Method of manufacturing copper alloy conductor for electric train wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2883495B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4214394B2 (en) * | 2003-06-20 | 2009-01-28 | 住友電気工業株式会社 | Abrasion-resistant trolley wire and its manufacturing method |
| JP4525653B2 (en) * | 2006-09-22 | 2010-08-18 | 日立電線株式会社 | Method for producing copper alloy conductor for train line and copper alloy conductor for train line |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0331437A (en) * | 1989-06-27 | 1991-02-12 | Furukawa Electric Co Ltd:The | Copper alloy for sliding and electrification excellent in heat resistance and wear resistance and its production |
| JP2797094B2 (en) * | 1989-07-05 | 1998-09-17 | 株式会社リーダー | Lid for heat-resistant PTP |
| JPH0367401A (en) * | 1989-08-04 | 1991-03-22 | Furukawa Electric Co Ltd:The | Wire for trolley line |
-
1992
- 1992-06-29 JP JP4171258A patent/JP2883495B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH068759A (en) | 1994-01-18 |
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