JPH04176849A - High-strength and high-conductivity copper alloy thin wire - Google Patents
High-strength and high-conductivity copper alloy thin wireInfo
- Publication number
- JPH04176849A JPH04176849A JP30564890A JP30564890A JPH04176849A JP H04176849 A JPH04176849 A JP H04176849A JP 30564890 A JP30564890 A JP 30564890A JP 30564890 A JP30564890 A JP 30564890A JP H04176849 A JPH04176849 A JP H04176849A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- thin wire
- heat treatment
- conductivity
- final
- 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.)
- Pending
Links
- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- 229910052726 zirconium Inorganic materials 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 7
- 239000010949 copper Substances 0.000 abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052790 beryllium Inorganic materials 0.000 abstract description 2
- 229910052796 boron Inorganic materials 0.000 abstract description 2
- 229910052737 gold Inorganic materials 0.000 abstract description 2
- 229910052709 silver Inorganic materials 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000005491 wire drawing Methods 0.000 description 4
- 229910017985 Cu—Zr Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010622 cold drawing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、機械的特性及び導電性に優れ、電子部品のリ
ード線やロボット用ケーブル等に使用される高力高導電
性銅合金細線に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a high-strength, high-conductivity copper alloy fine wire that has excellent mechanical properties and conductivity and is used for lead wires of electronic components, cables for robots, etc. .
電子部品のリード線やロボット用ケーブル等は引っ張り
ゃ繰り返し曲げを受けるものであり、機械的特性が求め
られる。一方、通電部品としての導電性も求められる。Lead wires for electronic components, cables for robots, etc. are subject to repeated tension and bending, so mechanical properties are required. On the other hand, conductivity as a current-carrying component is also required.
このような高力高導電性という両特性を満たすものとし
て、添加元素に少なくともＺｒを含むＣｕ−Ｚｒ系系合
金知られている。この合金は、Ｚｒを鋼中に析出分散さ
せることによって、その機械的特性を向上させると共に
、銅本来の高い導電性を維持するものである。A Cu-Zr alloy containing at least Zr as an additive element is known as one that satisfies both of these characteristics of high strength and high conductivity. This alloy improves the mechanical properties of steel by precipitating and dispersing Zr into the steel, while maintaining the high electrical conductivity inherent in copper.
そして、この種のＣｕ−Ｚｒ系合金からリード線やロボ
ット用ケーブルの銅細線（例えば直径０゜０８１１ＩＩ
１１）を製造する方法は以下の通りである。まず、所定
の成分に調整されたインゴットを鋳造する。このインゴ
ットを切断し、表面仕上げし、約９００”Ｃで成形し、
水冷することにより荒引線（例えば直径１１０）を得る
。つぎに、この荒引線に冷間伸線加工を施して所定の最
終線径細線とした後、最終熱処理を施して所定の高力高
導電性銅合金細線とする。This type of Cu-Zr alloy is then used to make lead wires and robot cables such as thin copper wires (for example, diameter 0°0811II).
The method for producing 11) is as follows. First, an ingot adjusted to have a predetermined composition is cast. This ingot is cut, surface finished, and molded at approximately 900"C.
A rough wire (for example, diameter 110) is obtained by water cooling. Next, this roughly drawn wire is subjected to cold wire drawing to obtain a thin wire with a predetermined final wire diameter, and then subjected to a final heat treatment to obtain a predetermined high-strength, high-conductivity copper alloy thin wire.
荒引線を冷間伸線し最終熱処理を施して成るＣｕ−Ｚｒ
系合金の特性を第１図により説明する。Cu-Zr made by cold drawing a rough wire and subjecting it to final heat treatment.
The characteristics of the alloys will be explained with reference to FIG.
第１図は機械的特性としての引張強さと導電率の最終熱
処理温度及びＺｒ等の添加元素量に対する傾向を示すも
のである。この第１図から明らかなように、添加元素量
が多くなると引張強さは向上するが導電率が低下する。FIG. 1 shows the tendency of mechanical properties such as tensile strength and electrical conductivity with respect to the final heat treatment temperature and the amount of added elements such as Zr. As is clear from FIG. 1, as the amount of added elements increases, the tensile strength improves, but the electrical conductivity decreases.
また、最終熱処理温度が高くなると導電率が向上するが
引張強さが低下する。Furthermore, as the final heat treatment temperature increases, the electrical conductivity improves, but the tensile strength decreases.
このように、引張強さと導電率は相反する特性であり、
銅合金の組成の調整や最終熱処理温度の選定によって、
機械的特性及び導電率を所定の値としているが自ずと限
界がある。例えば、ロボット用ケーブルなどのような耐
屈曲性が要求されるケーブルでは機械的特性が重視され
がちで、どちらかといえば導電性がある程度犠牲にされ
るという問題点を有していた。In this way, tensile strength and electrical conductivity are contradictory properties.
By adjusting the copper alloy composition and selecting the final heat treatment temperature,
Although the mechanical properties and conductivity are set to predetermined values, there are limits. For example, cables that require bending resistance, such as cables for robots, tend to place emphasis on mechanical properties, which has the problem of sacrificing electrical conductivity to some extent.
本発明は、従来の技術の有するこのような問題点に鑑み
てなされたものであり、導電性に優れ、機械的特性も向
上させた高力高導電性銅合金細線を提供せんとする。The present invention has been made in view of these problems of the conventional technology, and aims to provide a high-strength, high-conductivity copper alloy thin wire that has excellent conductivity and improved mechanical properties.
［課題を解決するための手段］
本発明の高力高導電性銅合金細線は、中間熱処理により
その組織を変化させたものである。すなわち、少なくと
もＺｒを含む添加元素のｔｔが０゜００５〜０．５重置
％である銅合金であって、最終線径細線に至る中間線径
で中間熱処理を施して、ＺｒやＣｕ ３ Ｚ ｒを析出
させて成る高力高導電性銅合金細線である。さらに、中
間熱処理より低温の最終熱処理を最終線径細線に施して
、非再結晶粒を残存させて成る高力高導電性銅合金細線
である。[Means for Solving the Problems] The high-strength, high-conductivity copper alloy thin wire of the present invention has its structure changed by intermediate heat treatment. That is, the copper alloy is a copper alloy in which the tt of the additive element containing at least Zr is 0°005 to 0.5% by weight, and is subjected to intermediate heat treatment at an intermediate wire diameter leading to a final wire diameter of fine wire, so that Zr or Cu 3 Z This is a high-strength, high-conductivity copper alloy fine wire made by depositing r. Further, the final heat treatment at a lower temperature than the intermediate heat treatment is performed on the final wire having a fine wire diameter, so that non-recrystallized grains remain.
［作用］
本発明は、冷間伸線加工の途中の中間線径で中間熱処理
を施すと、ＺｒやＣｕ、Ｚｒが析出し、導電性を高くし
て機械的特性が向上するという知見に基づいてなされた
ものである。すなわち、最終線径細線での最終熱処理だ
けではＺｒの未析出分がまだ銅マトリツクス中にかなり
存在しているが、中間線径で中間熱処理を施した後冷間
伸線した場合にはＺｒの析出量が増加する結果、Ｚｒや
Ｃｕ３Ｚｒが析出し、銅マトリツクス中の加工歪も取り
除かれることになり、これが導電性を高くして機械的特
性を向上させる。さらに、中間熱処理より低温の最終熱
処理を最終線径細線に施すと、非再結晶粒が残存し、機
械的特性が維持され、機械的特性と導電性のばらつきが
少なくなり均一な特性となる。[Function] The present invention is based on the knowledge that when intermediate heat treatment is performed at an intermediate wire diameter during cold wire drawing, Zr, Cu, and Zr precipitate, increasing conductivity and improving mechanical properties. It was made by In other words, if only the final heat treatment is performed on a thin wire with a final wire diameter, a considerable amount of unprecipitated Zr still exists in the copper matrix, but when the wire is cold drawn after an intermediate heat treatment with an intermediate wire diameter, the amount of Zr is reduced. As a result of the increase in the amount of precipitation, Zr and Cu3Zr are precipitated and the processing strain in the copper matrix is also removed, which increases the electrical conductivity and improves the mechanical properties. Furthermore, when a final heat treatment at a lower temperature than the intermediate heat treatment is applied to a wire with a fine final wire diameter, non-recrystallized grains remain, mechanical properties are maintained, and variations in mechanical properties and conductivity are reduced, resulting in uniform properties.
本銅合金細線はＺｒ系であるが、その他の添加元素とし
て、Ａｕ、Ａｇ、Ａ］、Ｂ、Ｂｅ、Ｂｊ。Although the present copper alloy thin wire is Zr-based, other additive elements include Au, Ag, A], B, Be, and Bj.
Ｃａ、’Ｃｄ、Ｃｏ、Ｃｒ、Ｆｅ、Ｇｅ、Ｈｆ、Ｉｎ、
Ｍｇ、Ｍｎ、Ｎｉ、Ｐ、Ｐｂ、Ｓｂ、Ｓｉ。Ca, 'Cd, Co, Cr, Fe, Ge, Hf, In,
Mg, Mn, Ni, P, Pb, Sb, Si.
Ｓｎ、Ｔｉ、Ｙ、Ｚｎ、およびミツシュメタル（Ｃａお
よびＣｅを主とした希土類元素の混合物をいう）を１種
以上添加することができる。これらの添加元素の総量は
０．００５〜０．５重量％であり、０．００５重量％未
満であると機械的特性が向上せず、０．５重量％を越え
ると、伸線加工性が悪くなり、導電性も低下する。One or more of Sn, Ti, Y, Zn, and Mitsushi metal (referring to a mixture of rare earth elements mainly consisting of Ca and Ce) can be added. The total amount of these additive elements is 0.005 to 0.5% by weight; if it is less than 0.005% by weight, the mechanical properties will not improve, and if it exceeds 0.5% by weight, the wire drawability will deteriorate. It becomes worse and the conductivity also decreases.
つぎに、Ｚｒや（、ｕ２Ｚｒを析出さセるための中間熱
処理は４００℃〜６００ ’Ｃでなされることが好まし
く、４００°Ｃ未満であると、機械的特性が優れるが導
電性が低（，６００’Ｃを越えると機械的特性が低下す
ると共に経済的ではない。また、熱処理時間は少なくと
も１時間以上であって均一な加熱が確保される時間であ
ればよい。さらに、この中間熱処理は１回に限ることな
く、前述した条件の範囲で２回以上行うことにより、Ｚ
ｒやＣｕ３Ｚ ｒの析出効果を一層高めることができる
。Next, the intermediate heat treatment for precipitating Zr and Zr is preferably carried out at 400°C to 600'C; if the temperature is less than 400°C, the mechanical properties are excellent but the conductivity is low ( If the temperature exceeds ,600'C, the mechanical properties deteriorate and it is not economical.The heat treatment time may be at least 1 hour or more, as long as uniform heating is ensured.Furthermore, this intermediate heat treatment Z
The precipitation effect of r and Cu3Zr can be further enhanced.
何回中間熱処理を行うかは、ＺｒやＣｕ３Ｚｒの析出効
果の程度と経済性により決定される。また、非再結晶粒
が残存させる中間熱処理より低温の最終熱処理は、高力
高導電性に叶うように、その条件を実験的に選択される
。The number of times the intermediate heat treatment is performed is determined by the degree of precipitation effect of Zr and Cu3Zr and economical efficiency. Further, the conditions for the final heat treatment at a lower temperature than the intermediate heat treatment to leave non-recrystallized grains are experimentally selected so as to achieve high strength and high conductivity.
つぎに、以下具体的な本発明例を比較例と対比しつつ説
明する。第１表に示すように、Ｚｒ及びＩｎを主とする
添加元素を総量で０．０１重１％、０．１重量％、０．
２重量％、０．５重量％含む４種の銅合金について、線
径１１ａａｎの荒引線を製造し、９５０°ＣＸ１時間の
溶体化処理した後、水焼き入れを行い、さらにこの後、
中間線径が滅面率９５％になるように冷間伸線し、中間
熱処理（５００°（ｘ３ｈｒ）後、最終線径０．’０８
ｍまで冷間伸線加工を施した。本発明例１と２と４はそ
れぞれ第１表に示す条件で最終熱処理を施しく本発明例
３は施さず）試料に供した。また、比較例５〜８は、上
述の荒引ｇ （１１ｍ＋ｎ）から最終線径細線（０，０
８ａ＋ｍ）まで冷間伸線加工した後、最終熱処理を施し
て試料に供した。そして、本発明例１〜４、比較例５〜
８について、それぞれ引張強さと導電率を測定した。Next, specific examples of the present invention will be explained below while comparing them with comparative examples. As shown in Table 1, the total amount of additive elements mainly consisting of Zr and In was 0.01% by weight, 0.1% by weight, and 0.1% by weight.
For four types of copper alloys containing 2% by weight and 0.5% by weight, rough drawn wire with a wire diameter of 11aan was manufactured, and after solution treatment at 950 ° C for 1 hour, water quenching was performed, and after this,
Cold drawing is performed so that the intermediate wire diameter has a surface loss rate of 95%, and after intermediate heat treatment (500° (x3 hr)), the final wire diameter is 0.08
A cold wire drawing process was applied to the wire up to m. Examples 1, 2, and 4 of the present invention were subjected to final heat treatment under the conditions shown in Table 1, but Example 3 of the present invention was not subjected to final heat treatment). In addition, Comparative Examples 5 to 8 have a final wire diameter of fine wire (0,0
After cold wire drawing to 8a+m), the wire was subjected to final heat treatment and used as a sample. Invention Examples 1 to 4, Comparative Examples 5 to
8, the tensile strength and conductivity were measured, respectively.
なお、上記した減面率とは、下式で定義されるものであ
る。In addition, the above-mentioned area reduction rate is defined by the following formula.
一減面率（％）
以下余白
〔発明の効果］
本発明の高力高導電性銅合金細線は、少なくともＺｒを
含む添加元素の総量が０．００５〜０゜５重量％である
銅合金であって、最終線径細線に至る中間線径で中間熱
処理を施してＺｒやＣｕ３Ｚｒを析出させて成るもので
あり、導電性を高くして機械的特性が向上するので、ロ
ボットに用いられるケーブル等のように過酷な使用条件
に耐えて通電も良好なものに適している。さらに、中間
熱処理より低温の最終熱処理を最終線径細線に施して非
再結晶粒を残存させると、均質化され、信転性の高い高
力高導電性銅合金細線とすることができる。Area reduction (%) Below is the margin [Effects of the invention] The high-strength, high-conductivity copper alloy thin wire of the present invention is a copper alloy in which the total amount of added elements including at least Zr is 0.005 to 0.5% by weight. It is made by performing intermediate heat treatment on the intermediate wire diameter leading to the final wire diameter to precipitate Zr and Cu3Zr, and as it increases the electrical conductivity and improves the mechanical properties, it is suitable for cables used in robots, etc. It is suitable for products that can withstand harsh usage conditions and have good electrical conductivity, such as. Furthermore, if the final heat treatment is performed at a lower temperature than the intermediate heat treatment on the final wire diameter fine wire so that non-recrystallized grains remain, it becomes homogenized and a high-strength, high-conductivity copper alloy fine wire with high reliability can be obtained.
第１図は最終熱処理温度に対する引張強さ又は導電率の
相関を示すグラフ図である。
特許出願人 タック電線株式会社
代理人 弁理士 梶 良 之
第１１］
最終熱処理温度（”ＣＸ ３ｔｔｒ）FIG. 1 is a graph showing the correlation of tensile strength or electrical conductivity to final heat treatment temperature. Patent Applicant TAC Electric Cable Co., Ltd. Agent Patent Attorney Yoshiyuki Kaji 11] Final heat treatment temperature ("CX 3ttr)
Claims (2)
５〜０．５重量％である銅合金であって、最終線径細線
に至る中間線径で中間熱処理を施してＺｒやＣｕ＿３Ｚ
ｒを析出させて成ることを特徴とする高力高導電性銅合
金細線。(1) The total amount of additive elements containing at least Zr is 0.00
Zr or Cu_3Z is a copper alloy containing 5 to 0.5% by weight, and is subjected to intermediate heat treatment at an intermediate wire diameter leading to a final wire diameter of fine wire.
A high-strength, high-conductivity copper alloy thin wire characterized by being made by precipitating R.
に施して非再結晶粒を残存させて成る請求項１記載の高
力高導電性銅合金細線。(2) The high-strength, high-conductivity copper alloy fine wire according to claim 1, wherein the final wire diameter is subjected to final heat treatment at a lower temperature than the intermediate heat treatment so that non-recrystallized grains remain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30564890A JPH04176849A (en) | 1990-11-10 | 1990-11-10 | High-strength and high-conductivity copper alloy thin wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30564890A JPH04176849A (en) | 1990-11-10 | 1990-11-10 | High-strength and high-conductivity copper alloy thin wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04176849A true JPH04176849A (en) | 1992-06-24 |
Family
ID=17947665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30564890A Pending JPH04176849A (en) | 1990-11-10 | 1990-11-10 | High-strength and high-conductivity copper alloy thin wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04176849A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011111634A (en) * | 2009-11-24 | 2011-06-09 | Sumitomo Electric Ind Ltd | Copper wire and method for manufacturing the same |
| WO2013047276A1 (en) * | 2011-09-29 | 2013-04-04 | 日本碍子株式会社 | Copper alloy wire rod and method for producing same |
| CN105023647A (en) * | 2015-07-13 | 2015-11-04 | 江苏亨通线缆科技有限公司 | Overhead two-core user lead-in cable |
| JPWO2015034071A1 (en) * | 2013-09-06 | 2017-03-02 | 古河電気工業株式会社 | Copper alloy wire and method for producing the same |
| JP2020037736A (en) * | 2018-08-30 | 2020-03-12 | 日立金属株式会社 | Copper alloy wire, cable, and method for manufacturing copper alloy wire |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5344422A (en) * | 1976-10-04 | 1978-04-21 | Olin Corp | Copper based alloy |
| JPS5344423A (en) * | 1976-10-04 | 1978-04-21 | Olin Corp | Method of improving strength and electric conductivity of copper based alloy |
-
1990
- 1990-11-10 JP JP30564890A patent/JPH04176849A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5344422A (en) * | 1976-10-04 | 1978-04-21 | Olin Corp | Copper based alloy |
| JPS5344423A (en) * | 1976-10-04 | 1978-04-21 | Olin Corp | Method of improving strength and electric conductivity of copper based alloy |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011111634A (en) * | 2009-11-24 | 2011-06-09 | Sumitomo Electric Ind Ltd | Copper wire and method for manufacturing the same |
| WO2013047276A1 (en) * | 2011-09-29 | 2013-04-04 | 日本碍子株式会社 | Copper alloy wire rod and method for producing same |
| JPWO2013047276A1 (en) * | 2011-09-29 | 2015-03-26 | 日本碍子株式会社 | Copper alloy wire and method for producing the same |
| US9754703B2 (en) | 2011-09-29 | 2017-09-05 | Ngk Insulators, Ltd. | Copper alloy wire rod and method for manufacturing the same |
| JPWO2015034071A1 (en) * | 2013-09-06 | 2017-03-02 | 古河電気工業株式会社 | Copper alloy wire and method for producing the same |
| CN105023647A (en) * | 2015-07-13 | 2015-11-04 | 江苏亨通线缆科技有限公司 | Overhead two-core user lead-in cable |
| JP2020037736A (en) * | 2018-08-30 | 2020-03-12 | 日立金属株式会社 | Copper alloy wire, cable, and method for manufacturing copper alloy wire |
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