JPS62296909A - Manufacture of plating finish 'invar(r)' alloy wire - Google Patents
Manufacture of plating finish 'invar(r)' alloy wireInfo
- Publication number
- JPS62296909A JPS62296909A JP14087086A JP14087086A JPS62296909A JP S62296909 A JPS62296909 A JP S62296909A JP 14087086 A JP14087086 A JP 14087086A JP 14087086 A JP14087086 A JP 14087086A JP S62296909 A JPS62296909 A JP S62296909A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- alloy wire
- invar
- plating
- invar alloy
- 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.)
- Granted
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 34
- 239000000956 alloy Substances 0.000 title claims abstract description 34
- 229910001374 Invar Inorganic materials 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000007747 plating Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims description 19
- 238000013459 approach Methods 0.000 claims description 9
- 238000005491 wire drawing Methods 0.000 abstract description 7
- 238000013000 roll bending Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Metal Extraction Processes (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
「産業上の利用分野」
本発明は、高強度のめつき仕上げインバー合金線の製造
方法に関するものであり、特にその捻回値を改善するた
めに特別なダイスを用いて伸線加工するものである。[Detailed Description of the Invention] 3. Detailed Description of the Invention "Field of Industrial Application" The present invention relates to a method for producing a high-strength plated finished invar alloy wire, and in particular improves its torsion value. For this purpose, special dies are used to draw the wire.
「従来の技術」
善するために、以下の（１）と（２）に記述する方法か
行なわれてきた。``Prior Art'' In order to improve the performance, the methods described in (1) and (2) below have been used.
（１）亜鉛めっきを施す前の亜鉛めっきインバー合金線
の素線に別工程で熱処理を行い、伸線加工による不均一
な残留歪を解放し、捻回値を改善する方法。(1) A method of heat-treating the strands of galvanized invar alloy wire in a separate process before galvanizing to release uneven residual strain caused by wire drawing and improve twist value.
（２）伸線上がり状態での素線にロールベンディング加
工を施して捻回値を改房する方法。この方法か有効な原
因は、伸線上がり状態での素線にあっては、その表層に
引張り残留歪が存在し、内層には圧縮残留歪が存在する
といった不均一な残留歪を有しているが、この不均一な
残留歪をロールベンディング加工することによって均一
に除去できるためである。。(2) A method of improving the twist value by applying roll bending to the drawn wire. The reason why this method is effective is that the wire after drawing has uneven residual strain, such as tensile residual strain on the surface layer and compressive residual strain on the inner layer. However, this uneven residual strain can be uniformly removed by roll bending. .
「発明が解決しようとする問題点」
ところか、前記（１）に記載した方法にあっては、熱処
理によって引張り強さが低下するために、この低下分を
見込んだ、より高強度のインバー合金線の素線が必要に
なる上に、素線の全長に亙って注意を払う必要が生じる
。このためこのような熱処理による改善方法はコストア
ップの要因にもなるために製造方法としては最良のもの
ではない。"Problem to be Solved by the Invention" However, in the method described in (1) above, since the tensile strength decreases due to heat treatment, a higher strength invar alloy is used to take into account this decrease. In addition to requiring strands of wire, care must be taken over the entire length of the strands. For this reason, such an improvement method using heat treatment is not the best manufacturing method since it also causes an increase in cost.
また、前記（２）に記載した方法にあっては、ロールベ
ンドと同一平面内においては残留歪が均一化されるもの
の、通常のロールベンディングでは互いに直行する２平
面内でベンディングする程度であるために、素線の全周
に亙ってベンディング加工を施すことは困難であり、こ
のため、素線全体に亙って残留歪を均一に除去すること
は困難である。なおベンディング加工を施すことによっ
て線径が太る問題があり、線径の増加分ら特別に制御し
なくてはならず加工か繁雑になる問題がある。In addition, in the method described in (2) above, the residual strain is made uniform within the same plane as the roll bending, but since normal roll bending only bends within two planes that are perpendicular to each other. Furthermore, it is difficult to bend the entire circumference of the wire, and therefore it is difficult to uniformly remove residual strain over the entire wire. However, there is a problem in that the wire diameter becomes thicker when the bending process is applied, and special control must be performed to account for the increase in the wire diameter, resulting in a problem that the process becomes complicated.
更に、ベンディング加工は撚線化する場合に再び施す加
工であり、同じ加工を繰り返１すことはコストアップの
要因にもなる問題がある。Furthermore, the bending process is a process that is performed again when the wires are twisted, and there is a problem in that repeating the same process increases the cost.
そこで本発明の出願人は、このような問題を含む従来の
亜鉛めっき仕上げインバー合金線の製造工程において、
特に、捻回値の低下する原因をあらゆる角度から検討し
てみたところ、以ゴに述べることか原因になっているこ
とを知見した。即ち、インバー合金線を製造する際に行
う伸線加工において、従来、１６〜２０°のアプローチ
角（ダイス角）を有するダイスを用いて伸線していたが
ために、伸線表層部に生じる引張り残留歪と内層に生じ
る圧縮残留歪との間に大きな差異を生じ、この状態で線
材の捻回試験を行うと、残留歪みの不均一差が材料の破
断限界を低下させ、これが原因で捻回値が著しく低下し
ていたのである。Therefore, the applicant of the present invention has solved the problem in the conventional manufacturing process of galvanized invar alloy wire, which involves such problems.
In particular, when we examined the cause of the decrease in torsion value from all angles, we discovered that the cause is as described below. That is, in the wire drawing process performed when manufacturing Invar alloy wire, conventionally the wire was drawn using a die having an approach angle (dice angle) of 16 to 20 degrees, which caused the wire drawing to occur in the surface layer of the wire. A large difference occurs between the tensile residual strain and the compressive residual strain that occurs in the inner layer, and when a twisting test is performed on the wire in this state, the uneven difference in residual strain lowers the rupture limit of the material, which causes twisting. The value had dropped significantly.
本発明は、前記問題に鑑みてなされたもので、捻回値の
優れた高強度のめっき仕上げインバー合金線を簡単かつ
低コストで製造できる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 problems, and an object of the present invention is to provide a method for manufacturing a high-strength plated invar alloy wire with excellent torsion value simply and at low cost.
「問題点を解決するための手段」
本発明は、前記問題点を解決するためにアプローチ角が
４〜ｌＯ°の低角ダイスを用いてめっき前のインバー合
金線の素線に伸線加工を施すものである。"Means for Solving the Problems" In order to solve the problems mentioned above, the present invention uses a low-angle die with an approach angle of 4 to 10° to draw an unplated Invar alloy wire. It is something that is given.
「作用 」
低角ダイスを用いて心線加工するために、素線の表層部
と内層部の残留歪差がより均一化されて捻回により生じ
る歪の吸収能が増加するために、捻回値が向上する。``Effect'' Because the core wire is processed using a low-angle die, the difference in residual strain between the surface layer and the inner layer of the strand becomes more uniform, increasing the ability to absorb strain caused by twisting. Value improves.
以下に本発明を更に詳細に説明する。The present invention will be explained in more detail below.
本発明は、最終使用状態でＩ １０ ｋｇｒ／ ｍｍ’
以上の引張り強さを有するめっき仕上げインバー合金線
を製造するにあたり、インバー合金線の素線にめっきを
施す前に、４〜！０°のアプローチ角（全角）を有する
低角ダイスを用いて伸線加工を施し、その後にめっきを
施してインバー合金線を製造するものである。The present invention has an I 10 kgr/mm' in end use condition.
In manufacturing a plated invar alloy wire having the above tensile strength, before plating the invar alloy wire, 4~! Wire drawing is performed using a low-angle die having an approach angle (full angle) of 0°, followed by plating to produce an invar alloy wire.
なお、具体的なめっき仕上げインバー合金線としては亜
鉛めっきインバー合金線等が用いられる。Note that a galvanized invar alloy wire or the like is used as a specific plated invar alloy wire.
このように製造されためっき仕上げインバー合金線は、
鋼の１／３〜１／４程変の線膨張係数を有し、かつ、高
強度で捻回特性にも優れている。従って本発明によって
製造されためっき仕上げインバー合金線は、超耐熱アル
ミニウム合金線と組み合わせて撚線を構成することによ
って、高温で使用なくなり、よって従来撚線と同一サイ
ズの撚線でも従来の撚線に比較して送電容量の大幅な増
加をなしうる特長がある。The plated invar alloy wire manufactured in this way is
It has a coefficient of linear expansion that is 1/3 to 1/4 that of steel, and has high strength and excellent twisting properties. Therefore, the plated invar alloy wire produced according to the present invention can be combined with super heat-resistant aluminum alloy wire to form a stranded wire, so that it can no longer be used at high temperatures. It has the advantage of significantly increasing power transmission capacity compared to the previous model.
なお、前記方法によってめっき仕上げインバー合金線を
製造するならば、ダイスのアプローチ角を若干変更する
ことで実施できるために、実施も容易であり、熱処理や
ロールベンディング加工を施す従来の方法に比較して低
コストで実施できる利点がある。In addition, if plated invar alloy wire is manufactured by the above method, it can be done by slightly changing the approach angle of the die, so it is easy to implement and compared to the conventional method of heat treatment and roll bending. It has the advantage that it can be implemented at low cost.
「試験例」
第１表に示す組成のインバー合金を溶解し鋳造した後に
、熱間圧延加工と伸線加工を施して直径１０’ｍｍの荒
引線を作製し、８５０℃で１時間の析出処理を施してイ
ンバー合金線の素線を作製した。"Test Example" After melting and casting an invar alloy with the composition shown in Table 1, hot rolling and wire drawing were performed to produce a rough drawn wire with a diameter of 10'mm, followed by precipitation treatment at 850°C for 1 hour. A strand of invar alloy wire was prepared by performing the following steps.
第１表
第２表に示す線径の６インバ一合金線の素線を種々のア
プローチ角（４°〜２０°）のダイスで伸線加工した場
合の引張り強さの値と捻回値について測定した。それら
の結果を第２表に示す。なお、捻回値については、２０
回以上の捻回に耐えた線材を○印で示し、１８〜２０回
の捻回に耐えた線材を△印で示し、１８回の捻回より少
ない捻回で亀裂が見られた線材をＸ印で示しである。な
お、捻回値においてＸ印で示したインバー合金線にあっ
ては、４〜５回の捻回で亀裂を確認している。Regarding the tensile strength and twist values when strands of 6-invar alloy wire with wire diameters shown in Table 1 and Table 2 are drawn using dies with various approach angles (4° to 20°). It was measured. The results are shown in Table 2. In addition, regarding the twist value, 20
Wire rods that withstood twisting more than 18 times are marked with ○, wire rods that withstood 18 to 20 twists are marked with △, and wire rods that showed cracks after twisting less than 18 times are marked with X. It is indicated by a mark. In addition, in the case of the invar alloy wire indicated by the X mark in terms of twist value, cracks were confirmed after twisting 4 to 5 times.
第２表
スについて各測定値を求めたのは４゛より小さなダイス
角を有するダイスは製造困難なためである。The reason why each measurement value was determined for Table 2 is that it is difficult to manufacture dies having a die angle smaller than 4°.
第２表に示す結果から、アプローチ角４゛〜１０°のダ
イスを用いて加工することによって得られたインバー合
金線の捻回値が、従来のダイスを用いて加工することに
よって得られたインバー合金線の捻回値に比較して極め
て優れたり性を存していることが明らかになった。従っ
て本発明においてはダイス角を４°〜１０°に限定した
。From the results shown in Table 2, it is clear that the torsion value of the Invar alloy wire obtained by processing using a die with an approach angle of 4° to 10° is higher than that obtained by processing using a conventional die. It has become clear that the tortuosity is extremely superior to that of alloy wires. Therefore, in the present invention, the die angle is limited to 4° to 10°.
「発明の効果」
以上説明したように本発明は、アプローチ角が４〜１０
°の低角ダイスを用いてめっき萌のインバー合金線の素
線に伸線加工を施すものであり、素線の表層部と内層部
の残留歪差をより均一化できるために、捻回により生じ
る歪の吸収能が増加して捻回特性の優秀なめっき仕上げ
インバー合金線を製造することができる。また、本発明
はアプローチ角の小さなダイスを使用することにより実
施できるために、熱処理やロールベンディング加工を施
す必要のあっ１こ従来方法に比較して、実施ら容易であ
り、低コストでめっき仕上げインバー合金線を製造でき
る効果がある。"Effects of the Invention" As explained above, the present invention has an approach angle of 4 to 10
This process uses a low-angle die to draw a plated invar alloy wire, and in order to make the difference in residual strain between the surface layer and inner layer of the wire more uniform, twisting It is possible to manufacture a plated invar alloy wire with excellent twisting properties due to increased ability to absorb strain. In addition, since the present invention can be implemented using a die with a small approach angle, it is easier to implement and achieves plating finish at a lower cost than conventional methods that require heat treatment and roll bending. This has the effect of producing invar alloy wire.
Claims (1)
さを有するインバー合金線の素線にめっきを施すことを
特徴とするめっき仕上げインバー合金線の製造方法にお
いて、めっき前の素線を４〜１０°のアプローチ角を有
する低角ダイスを用いて伸線加工することを特徴とする
めっき仕上げインバー合金線の製造方法。In a method for manufacturing a plated invar alloy wire, which is characterized by plating a strand of invar alloy wire having a tensile strength of 110 kgf/mm^2 or more in the final use state, 4 to 10 strands of strands before plating are used. A method for producing a plated invar alloy wire, the method comprising drawing the wire using a low-angle die having an approach angle of °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14087086A JPS62296909A (en) | 1986-06-17 | 1986-06-17 | Manufacture of plating finish 'invar(r)' alloy wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14087086A JPS62296909A (en) | 1986-06-17 | 1986-06-17 | Manufacture of plating finish 'invar(r)' alloy wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62296909A true JPS62296909A (en) | 1987-12-24 |
| JPH054162B2 JPH054162B2 (en) | 1993-01-19 |
Family
ID=15278667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14087086A Granted JPS62296909A (en) | 1986-06-17 | 1986-06-17 | Manufacture of plating finish 'invar(r)' alloy wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62296909A (en) |
-
1986
- 1986-06-17 JP JP14087086A patent/JPS62296909A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH054162B2 (en) | 1993-01-19 |
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