JPS6123607B2 - - Google Patents
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- Publication number
- JPS6123607B2 JPS6123607B2 JP1394382A JP1394382A JPS6123607B2 JP S6123607 B2 JPS6123607 B2 JP S6123607B2 JP 1394382 A JP1394382 A JP 1394382A JP 1394382 A JP1394382 A JP 1394382A JP S6123607 B2 JPS6123607 B2 JP S6123607B2
- Authority
- JP
- Japan
- Prior art keywords
- stranded
- conductor
- oxidizing
- stranded wire
- heating
- 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
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- 239000004020 conductor Substances 0.000 claims description 54
- 230000001590 oxidative effect Effects 0.000 claims description 49
- 238000010438 heat treatment Methods 0.000 claims description 38
- 238000007254 oxidation reaction Methods 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 32
- 230000003647 oxidation Effects 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 11
- 238000000137 annealing Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000007654 immersion Methods 0.000 description 17
- 230000006698 induction Effects 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 239000010949 copper Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000002500 effect on skin Effects 0.000 description 3
- 230000035515 penetration Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Chemical Treatment Of Metals (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Description
【発明の詳細な説明】
本発明は、電力ケーブル用電気導電性より線導
体の素線１本１本の表面に、導体原材料を基盤と
する電気絶縁性の酸化皮膜を生成する酸化皮膜素
線絶縁導体の製造方法に関するもので、特により
線の状態で酸化皮膜を製造する方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an oxide film strand that forms an electrically insulating oxide film based on a conductor raw material on the surface of each strand of an electrically conductive stranded wire conductor for power cables. The present invention relates to a method of manufacturing an insulated conductor, and particularly to a method of manufacturing an oxide film on a stranded wire.
発明の背景
上記の方法の一つとして、不活性ふんい気の中
でより線導体を加熱し、その後酸化液に浸せきす
るという方法が発表されている（特開昭55―
164079号）。Background of the Invention As one of the above-mentioned methods, a method has been published in which a stranded conductor is heated in an inert atmosphere and then immersed in an oxidizing solution (Japanese Patent Laid-Open No. 1983-1989-1).
No. 164079).
しかしこの方法においては、より線導体の加熱
時に、Cu2Oが生成し易く、それがいつたん生成
すると保護膜が生成され、CuOができにくいこ
とがわかつているので、加熱温度をあまり上昇で
きない欠点があつた。 However, with this method, it is known that Cu 2 O is easily generated when heating the stranded wire conductor, and once it is formed, a protective film is formed, making it difficult to form CuO, so the heating temperature cannot be increased too much. There were flaws.
すなわち、加熱温度をもつと上昇させれば酸化
反応が早く進行することがわかつていても、上記
のようにあまり上昇させることができなかつた。 That is, even though it is known that the oxidation reaction proceeds more quickly if the heating temperature is increased, it has not been possible to increase the heating temperature much as described above.
そのうえ、加熱したより線導体を酸化液中に浸
せきすると、急速に酸化液の温度（90〜100℃）
近くまで冷却され、予熱の効果が急速に消滅する
欠点もあつた。 Moreover, when a heated stranded conductor is immersed in an oxidizing solution, the temperature of the oxidizing solution (90 to 100℃) increases rapidly.
Another disadvantage was that the preheating effect quickly disappeared as the temperature was cooled to near zero.
なお、酸化液内においてより線導体を高周波誘
導加熱するという方法も提案されてている。しか
しこの方法においても、加熱されたより線導体は
急速に酸化液の温度まで下がり、加熱装置に相当
大容量なものを使用しても、あまり有効でなかつ
た。 Note that a method has also been proposed in which a stranded wire conductor is heated by high frequency induction in an oxidizing solution. However, even in this method, the heated stranded wire conductor rapidly drops to the temperature of the oxidizing solution, and even if a heating device with a fairly large capacity is used, it is not very effective.
本第１発明においては、より線導体の加熱温度
をより高くして酸化反応をより促進させることを
主な目的とする。 The main purpose of the first invention is to increase the heating temperature of the stranded wire conductor to further promote the oxidation reaction.
また第２発明においては、上記第１発明の目的
に加えて、より線導体内への酸化液の浸透をより
良くすることを目的とする。 In addition to the object of the first invention, the second invention aims to improve the penetration of the oxidizing liquid into the stranded wire conductor.
発明の構成
第１発明は、
(1) まずより線導体内に酸化液を圧入すること、
(2) 酸化液を圧入した後に、より線導体を加熱す
ること、
を特徴とする。Structure of the Invention The first invention is characterized by: (1) First, an oxidizing liquid is pressurized into the stranded wire conductor, and (2) the stranded wire conductor is heated after the oxidizing liquid is pressurized.
また、第２発明においては、
上記(1)，(2)の工程の後、再びより線導体内に酸
化液を圧入すること、
を特徴とする。 Further, the second invention is characterized in that after the steps (1) and (2) above, the oxidizing liquid is again press-fitted into the stranded wire conductor.
なお、酸化液の圧入は、酸化液内におけるよ
り、線導体の外部の酸化液の圧力を、前記より線
導体の内部の前記酸化液のより大きくした状態で
行なう。すなわちより線導体の外部の酸化液を加
圧するか、またはより線導体内部の酸化処理液を
減圧することにより行なわれる。 The oxidizing liquid is press-fitted in such a state that the pressure of the oxidizing liquid outside the wire conductor is greater than that inside the stranded wire conductor. That is, this is carried out by pressurizing the oxidizing liquid outside the stranded conductor or by reducing the pressure of the oxidizing liquid inside the stranded conductor.
より詳しい説明 「第１図」は第１発明の説明図である。More detailed explanation "FIG. 1" is an explanatory diagram of the first invention.
１０はより線導体である。 10 is a stranded conductor.
１２は浸せき酸化そうで、両端に圧力シール１
４を有する。 12 seems to be immersed in oxidation, with pressure seals 1 on both ends.
It has 4.
１６は酸化液で、より線導体１０が銅の場合
は、５％のNaClO2と５％のNaOHの混合水溶液
で、90〜100℃のものを用いる。 Reference numeral 16 denotes an oxidizing liquid, and when the stranded wire conductor 10 is made of copper, an aqueous mixed solution of 5% NaClO 2 and 5% NaOH at a temperature of 90 to 100°C is used.
１８は加熱酸化そうで、内部に高周波誘導加熱
コイル２０などの加熱手段を有する。 18 is likely to be heated and oxidized, and has heating means such as a high frequency induction heating coil 20 inside.
２２は酸化液１６のタンク、２４は加圧用のポ
ンプである。 22 is a tank for the oxidizing liquid 16, and 24 is a pressurizing pump.
より線導体１０は矢印２６の方向に連続進行す
る。 Stranded conductor 10 continues to advance in the direction of arrow 26.
ポンプ２４によつて酸化液１６を加圧し、酸化
液１６をより線導体１０内に圧入する。 The oxidizing liquid 16 is pressurized by the pump 24 and is forced into the stranded conductor 10 .
そのより線導体１０を加熱酸化そう１８内にお
いて誘導加熱コイル２０によつて加熱する。上記
のようにCu2Oが先に生成する心配がないので、
より線導体１０は200〜500℃程度に加熱すること
ができる。 The stranded conductor 10 is heated in the heating oxidizer 18 by an induction heating coil 20. Since there is no need to worry about Cu 2 O being generated first as mentioned above,
The stranded wire conductor 10 can be heated to about 200 to 500°C.
このようにすると、次のような作用が行なわれ
る。 In this way, the following effects are achieved.
(1) 上記のように加熱酸化そう１８内において、
より線導体１０を高温に加熱できる。そのため
に酸化反応は短時間に進行する。したがつて浸
せき酸化そう１２内で酸化反応が完全に終了し
なくとも、加熱酸化そう１８内で急激に酸化が
進行するので、浸せき酸化そう１２は短くとも
よい。(1) In the heating oxidation chamber 18 as described above,
The stranded wire conductor 10 can be heated to a high temperature. Therefore, the oxidation reaction proceeds in a short time. Therefore, even if the oxidation reaction does not completely complete within the immersion oxidation chamber 12, the oxidation rapidly progresses within the heating oxidation chamber 18, so the length of the immersion oxidation chamber 12 may be short.
(2) より線導体１０内に酸化液１６を加圧浸透し
た後に加熱するので、加圧だけでは完全に内部
まで酸化処理できなくとも、加熱することでよ
り線導体１０内部の酸化液１６が沸騰状態とな
り、さらに内部素線まで浸透する。(2) Since the oxidizing liquid 16 is infiltrated into the stranded wire conductor 10 under pressure and then heated, even if the oxidizing liquid 16 cannot be completely oxidized inside by applying pressure alone, the oxidizing liquid 16 inside the stranded wire conductor 10 can be heated. It becomes boiling and even penetrates into the internal wire.
(3) 誘導加熱コイル２０を、浸せき酸化そう１２
の圧力シール１４に近ずけておくと、浸せき酸
化そう１２内で圧入された酸化液１６がより線
導体１０内を長手方向に流れるので、誘導加熱
コイル２０の内側においても酸化液１６がなく
ならないし、酸化液１６の補給が自動的になさ
れる。(3) Immerse and oxidize the induction heating coil 20 12
If the pressure seal 14 is kept close to the pressure seal 14, the oxidizing liquid 16 press-fitted in the immersion oxidizing tank 12 will flow in the longitudinal direction inside the stranded wire conductor 10, so that there will be no oxidizing liquid 16 inside the induction heating coil 20. The oxidizing liquid 16 is automatically replenished.
(4) 浸せき酸化そう１２内においては、比較的外
周部の素線の表面が酸化される。そのため後段
の加熱酸化そう１８において誘導加熱コイル２
０によつて加熱されると、より線導体１０の外
周よりも内側の方に多くのうず電流が流れ、内
部が発熱し易くなる。そのことは内部の酸化反
応を促進する上で効果的である。(4) In the immersion oxidation chamber 12, the surface of the wire at a relatively outer peripheral portion is oxidized. Therefore, in the heating oxidation process 18 in the latter stage, the induction heating coil 2
When heated by zero, more eddy current flows inside the stranded wire conductor 10 than at the outer periphery, and the inside becomes more likely to generate heat. This is effective in promoting internal oxidation reactions.
すなわち外から内に向つて酸化皮膜が生長し
ていくにしたがつて、段々内部の温度が上昇し
ていくことになり、より線導体１０自身の表皮
効果が有効に利用されることになる。 That is, as the oxide film grows from the outside to the inside, the internal temperature gradually increases, and the skin effect of the stranded wire conductor 10 itself is effectively utilized.
(5) 加熱酸化そう１８内における加熱温度を400
〜600℃とすれば、より線焼鈍をも兼用でき
る。なおCuOの融点は1148℃であり、このよ
うに高温加熱しても、劣化はない。(5) Set the heating temperature in the heating oxidation tank 18 to 400
If the temperature is ~600°C, it can also be used for stranded wire annealing. Note that the melting point of CuO is 1148°C, so there is no deterioration even when heated at such high temperatures.
より線の加工工程中に導体が硬化するので、
より線焼鈍をする必要のあることは周知であ
る。このより線焼鈍を高周波誘導加熱で行なう
場合、表皮効果のため、従来は、せいぜい50mm2
程度の導体までが限度で、それ以上の大サイズ
のものはできなかつた。 As the conductor hardens during the stranded wire processing process,
The need for stranded wire annealing is well known. When performing this stranded wire annealing using high-frequency induction heating, conventionally, due to the skin effect, the stranded wire was annealed at most 50 mm 2
The limit was that it could only be made into a small conductor, and it was not possible to create anything larger than that.
しかし、上記の本発明の場合は、素線１本１本
が皮膜絶縁されるので、より線の表皮効果が低減
され、全部の素線は均一に加熱される。そのため
焼鈍特性は均一化する。 However, in the case of the present invention, each strand is insulated with a film, so the skin effect of the stranded wire is reduced and all the strands are heated uniformly. Therefore, the annealing characteristics become uniform.
次に、「第２図」は浸せき酸化そう１２の前段
のそう２８、および後段の加熱酸化そう１８を真
空吸引ポンプ３０によつて減圧した場合の説明図
である。 Next, "FIG. 2" is an explanatory diagram when the pressure of the first stage of the immersion oxidation stage 12 and the second stage of the heating oxidation stage 18 are reduced by the vacuum suction pump 30.
このようにすると、浸せき酸化そう１２内のよ
り線導体１０内が減圧される。 In this way, the pressure inside the stranded wire conductor 10 within the immersion oxidation chamber 12 is reduced.
より線導体１０の内外において圧力差ができる
という点で、上記「第１図」の場合と同じであ
り、その作用も同じである。 This is the same as the case shown in FIG. 1 above in that a pressure difference is created between the inside and outside of the stranded wire conductor 10, and the effect is also the same.
「第３図」は第２発明の説明図である。 "FIG. 3" is an explanatory diagram of the second invention.
加熱酸化そう１８の後段に、さらに第２浸せき
酸化そう３２を設ける。第１の浸せき酸化そう１
２と同じように、第２浸せき酸化そう３２内にお
いては、酸化液１６を加圧するか、またはより線
導体１０内を減圧する。 A second immersion oxidation stage 32 is further provided after the heating oxidation stage 18. First immersion oxidation process 1
2, in the second immersion oxidation chamber 32, the oxidizing liquid 16 is pressurized, or the inside of the stranded wire conductor 10 is depressurized.
そして、浸せき酸化そう１２内においてより線
導体１０内に酸化液１６を圧入し、、加熱酸化そ
う１８内において加熱し、その後第２浸せき酸化
そう内において再び酸化液１６を圧入する。 Then, the oxidizing liquid 16 is press-fitted into the stranded wire conductor 10 in the immersion oxidation chamber 12, heated in the heating oxidation chamber 18, and then the oxidation liquid 16 is again press-fitted into the second immersion oxidation chamber.
その作用は次のとおりである。 Its action is as follows.
(1) 加熱酸化そう１８における加熱により、より
線導体１０が熱膨張し、素線間のすき間が大き
くなつているので、第２浸せき酸化そう３２内
においては酸化液１６がさらに浸透し易くな
る。(1) The stranded wire conductor 10 thermally expands due to the heating in the heating oxidation chamber 18, and the gaps between the wires become larger, so that the oxidizing liquid 16 more easily penetrates into the second immersion oxidation chamber 32. .
(2) 第２浸せき酸化そう３２内では、加熱された
より線導体１０が酸化液１６の温度（90〜100
℃）まで急冷されるので、より線導体１０内の
空間中の気体や蒸気の体積が縮小、周囲から酸
化液１６を吸引し易くなり、その差圧が圧入の
圧力に加わり、さらに効果的に酸化液１６が浸
透する。(2) In the second immersion oxidation tank 32, the heated stranded wire conductor 10 is heated to the temperature of the oxidizing liquid 16 (90 to 100
℃), the volume of gas and vapor in the space inside the stranded wire conductor 10 is reduced, making it easier to draw in the oxidizing liquid 16 from the surroundings, and the differential pressure adds to the press-fitting pressure, making it even more effective. The oxidizing liquid 16 penetrates.
(3) なお加熱そう１８内において高温に加熱して
も、すでに最外層には安定なCuOができてい
るので、Cu2O（変色）が生じない。また、内
部は、空気と直接的に接せずに、酸化液が充満
しているので、加熱により短時間にCuOがで
きる。したがつてCu2Oは、酸化液が介在して
いる状態での加熱であるからして、生成しな
い。(3) Even if heated to a high temperature in the heating chamber 18, stable CuO is already formed in the outermost layer, so Cu 2 O (discoloration) does not occur. Furthermore, since the interior is not in direct contact with air and is filled with oxidizing liquid, CuO can be formed in a short time by heating. Therefore, Cu 2 O is not generated since the heating is performed in the presence of an oxidizing solution.
(4) 第２浸せき酸化そう３２の後段にさらに第２
の加熱そう１８を設け（図示省略）、酸化液の
圧入と加熱の工程を２段にするか、あるいはさ
らに多段に組み合わせることもできる。(4) After the second immersion oxidation process 32, a second
It is also possible to provide a heating channel 18 (not shown) and perform the steps of press-in the oxidizing liquid and heating in two stages, or to combine them in multiple stages.
そのようにすると、酸化皮膜の生成数を自由
にコントロールできる。 In this way, the number of oxide films formed can be freely controlled.
発明の効果
第１発明においては、より線に酸化液を圧入し
た後に加熱を行なうので、加熱するときは、すで
に素線表面にCuOの生成が始まつており、Cu2O
生成の心配がない。だから従来よりも、はるかに
高温に加熱できる。Effects of the Invention In the first invention, heating is performed after the oxidizing liquid is injected into the stranded wire, so by the time of heating, CuO has already started to be formed on the surface of the strand, and Cu 2 O
There is no need to worry about generation. Therefore, it can be heated to much higher temperatures than conventional methods.
したがつて、酸化反応が未完了の状態で加熱酸
化そう１８に入つて来ても、急速に反応を進行さ
せ完了することができる。 Therefore, even if the oxidation reaction reaches the heating oxidation tank 18 in an uncompleted state, the reaction can rapidly proceed and be completed.
よつて、浸せき酸化そうの長さを従来より短か
くすることができる。 Therefore, the length of the immersion oxidation process can be made shorter than before.
また、高温加熱ができるので、より線焼鈍を兼
ねさせることもできる。大サイズのより線導体を
焼鈍するにあたつて、素線絶縁するということも
考えられる。 Furthermore, since high temperature heating is possible, it can also be used for stranded wire annealing. When annealing large-sized stranded wire conductors, it is also possible to insulate the strands.
また、第２発明においては、さらに内層まで酸
化させる場合に、酸化液の浸透をよくすることが
できる。 Furthermore, in the second invention, when further oxidizing the inner layer, penetration of the oxidizing solution can be improved.
第１図と第２図は、第１発明の異なる実施例の
説明図、第３図は第２発明の実施例の説明図。
１０：より線導体、１２：浸せき酸化そう、１
６：酸化液、１８：加熱酸化そう、２０：誘導加
熱コイル、３２：第２浸せき酸化そう。
1 and 2 are explanatory diagrams of different embodiments of the first invention, and FIG. 3 is an explanatory diagram of an embodiment of the second invention. 10: Stranded conductor, 12: Immersion oxidation, 1
6: Oxidizing liquid, 18: Heating oxidation, 20: Induction heating coil, 32: Second immersion oxidation.
Claims (1)
酸化液によつて酸化処理する工程において、前記
酸化液内における前記より線導体の外部の前記酸
化液の圧力を、前記より線導体の内部の前記酸化
液の圧力よりも大とした状態で、前記より線導体
内に酸化液を圧入させた後、 前記より線導体を加熱して酸化皮膜を生成する
ことを特徴とする酸化皮膜素線絶縁導体の製造方
法。 ２ 加熱がより線の焼鈍を兼ねていることを特徴
とする、特許請求の範囲第１項に記載の酸化皮膜
素線絶縁導体の製造方法。 ３ 電気導電線より線導体を、より線の形で、酸
化液によつて酸化処理する工程において、 前記酸化液内における前記より線導体の外部の
前記酸化液の圧力を、前記より線導体の内部の前
記酸化液の圧力よりも大とした状態で、前記より
線導体内に酸化液を圧入させた後、 前記より線導体を加熱し、 その後再び前記のようにしてより線導体内に酸
化液を圧入すること、を特徴とする酸化皮膜素線
絶縁導体の製造方法。[Claims] 1. A wire conductor made of an electrically conductive wire in the form of a stranded wire,
In the step of performing oxidation treatment with an oxidizing solution, the pressure of the oxidizing solution outside the stranded wire conductor in the oxidizing solution is set higher than the pressure of the oxidizing solution inside the stranded wire conductor, A method for producing an oxide film stranded insulated conductor, comprising: pressurizing an oxidizing liquid into the stranded conductor, and then heating the stranded conductor to form an oxide film. 2. The method for manufacturing an oxide film stranded insulated conductor according to claim 1, wherein the heating also serves as annealing of the stranded wire. 3. In the step of oxidizing a stranded electrically conductive wire conductor in the form of a stranded wire with an oxidizing solution, the pressure of the oxidizing solution outside the stranded wire conductor in the oxidizing solution is controlled to the pressure of the oxidizing solution outside the stranded wire conductor. After pressurizing the oxidizing liquid into the stranded conductor under pressure higher than the pressure of the oxidizing liquid inside, heating the stranded conductor, and then oxidizing the inside of the stranded conductor again as described above. A method for manufacturing an oxide film stranded insulated conductor, which comprises pressurizing a liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1394382A JPS58131609A (en) | 1982-01-30 | 1982-01-30 | Method of producing oxide film strand insulating conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1394382A JPS58131609A (en) | 1982-01-30 | 1982-01-30 | Method of producing oxide film strand insulating conductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58131609A JPS58131609A (en) | 1983-08-05 |
| JPS6123607B2 true JPS6123607B2 (en) | 1986-06-06 |
Family
ID=11847285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1394382A Granted JPS58131609A (en) | 1982-01-30 | 1982-01-30 | Method of producing oxide film strand insulating conductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58131609A (en) |
-
1982
- 1982-01-30 JP JP1394382A patent/JPS58131609A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58131609A (en) | 1983-08-05 |
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