JP2001314950A - Manufacturing method for copper wire and manufacturing apparatus therefor - Google Patents
Manufacturing method for copper wire and manufacturing apparatus thereforInfo
- Publication number
- JP2001314950A JP2001314950A JP2000356325A JP2000356325A JP2001314950A JP 2001314950 A JP2001314950 A JP 2001314950A JP 2000356325 A JP2000356325 A JP 2000356325A JP 2000356325 A JP2000356325 A JP 2000356325A JP 2001314950 A JP2001314950 A JP 2001314950A
- Authority
- JP
- Japan
- Prior art keywords
- copper
- molten copper
- copper wire
- molten
- wire
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、溶解炉からの溶銅
を、例えばベルトキャスター式の連続鋳造機を用い、連
続して低酸素の銅線に成形する銅線の製造方法及び製造
装置に関し、特に、電子ワイヤ、リードワイヤ、巻線、
線状電気部品などの製造に用いて好適なものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing copper wire in which molten copper from a melting furnace is continuously formed into a low oxygen copper wire using, for example, a belt caster type continuous casting machine. Especially, electronic wires, lead wires, windings,
It is suitable for use in the production of linear electrical components and the like.
【０００２】[0002]
【従来の技術】例えば、低酸素銅線の製造方法には、銅
の種線を溶融金属槽に通過させ、種線の外周に溶融金属
を付着させて棒状銅材を得、これを圧延して線にする所
謂ディップフォーミング法がある。ディップフォーミン
グ法は、溶銅から無酸素銅線を一連の生産ラインで連続
製造できる。この種の無酸素銅荒引線設備を用いた製造
方法には、この他アップワード法などある。また、低酸
素銅線の製造方法には、ビレットの押出し加工による製
造方法もある。これらの製造方法は、装置全体を体系的
に制御、管理しなければならず、高価な設備を要する。2. Description of the Related Art For example, in a method for producing a low-oxygen copper wire, a copper seed wire is passed through a molten metal bath, and a molten metal is adhered to the outer periphery of the seed wire to obtain a rod-shaped copper material. There is a so-called dip forming method for forming a straight line. The dip forming method can continuously produce oxygen-free copper wires from molten copper in a series of production lines. Other manufacturing methods using this kind of oxygen-free copper rough wire drawing equipment include an upward method. As a method of manufacturing a low oxygen copper wire, there is also a method of manufacturing a billet by extrusion. These manufacturing methods require systematic control and management of the entire apparatus, and require expensive equipment.
【０００３】さらに、低酸素銅線の製造方法には、例え
ば特公昭５９−６７３６号公報、特開昭５５−１２６３
５３号公報に開示されるベルトキャスター方式の連続鋳
造機を用いたものがある。ベルトキャスター方式の連続
鋳造機は、その主要部が、周回移動する無端ベルトと、
この無端ベルトに円周の一部を接触させて回転する鋳造
輪とにより構成される。この連続鋳造機は、シャフト炉
などの大型の溶解炉と連続され、さらに圧延機と連結さ
れることによって、溶解炉からの溶銅を連続鋳造圧延し
て銅線を一連の生産ラインで高速に製造することができ
る。従って、高い生産性を得ることができ、大量生産が
可能になることから、銅線の製造コストを低減させるこ
とが可能になる。従来、この種のベルトキャスター方式
の連続鋳造機では、溶銅の移送過程で還元ガス及び／又
は不活性ガスによって還元処理を行うことで、低酸素の
溶銅を得、それを鋳造・圧延して低酸素銅線の製造が可
能となる。Further, a method for producing a low-oxygen copper wire is disclosed in, for example, Japanese Patent Publication No. 59-6736 and Japanese Patent Application Laid-Open No. 55-1263.
No. 53 discloses a device using a belt caster type continuous casting machine. The main part of the belt caster type continuous casting machine is an endless belt that moves around
The endless belt is constituted by a casting wheel that rotates by bringing a part of the circumference into contact with the endless belt. This continuous casting machine is connected to a large melting furnace such as a shaft furnace, and is connected to a rolling mill to continuously cast and roll the molten copper from the melting furnace to produce copper wires at a high speed in a series of production lines. Can be manufactured. Therefore, high productivity can be obtained and mass production is possible, so that the production cost of copper wires can be reduced. Conventionally, in a continuous caster of this type of a belt caster system, a low oxygen molten copper is obtained by performing a reduction treatment with a reducing gas and / or an inert gas in a process of transferring the molten copper, and the molten copper is cast and rolled. Thus, a low-oxygen copper wire can be manufactured.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記し
たベルトキャスター方式の連続鋳造機は、溶銅の移送過
程を気密に保持し、還元ガス及び／又は不活性ガスでシ
ールして脱酸した溶銅を実際に鋳造すると、鋳造銅材に
ホールが生成し、鋳造銅材の圧延時に、線表面に傷が発
生して表面品質を低下させる問題があった。そのため、
ベルトキャスター方式で製造された低酸素銅線は未だ市
場に出ておらず、低酸素銅線は主に上記のディップフォ
ーミング法などで製造されているのが現状である。However, the continuous caster of the belt caster type described above keeps the transfer process of the molten copper airtight, and seals with a reducing gas and / or an inert gas to remove the deoxidized molten copper. When casting is actually performed, holes are formed in the cast copper material, and when the cast copper material is rolled, there is a problem in that the surface of the wire is scratched and the surface quality is reduced. for that reason,
The low oxygen copper wire manufactured by the belt caster method is not yet on the market, and the low oxygen copper wire is currently manufactured mainly by the dip forming method described above.
【０００５】鋳造銅線のホールは、溶銅の凝固時に、溶
銅中の水素と酸素との溶解度が減少するために、結合し
て生成されるＨ2Ｏホールに起因する。このＨ2Ｏホール
が冷却時にトラップされるため、圧延時に傷となる。熱
力学的には、溶銅中の水素と酸素の濃度は、次式で表さ
れる関係にある。 〔Ｈ〕2〔Ｏ〕＝ｐH2O・Ｋ ………式（Ａ） ここで、 〔Ｈ〕 ： 溶銅中の水素濃度 〔Ｏ〕 ： 溶銅中の酸素濃度 ｐH2O ： 雰囲気中の水蒸気分圧 Ｋ ： 平衡定数 である。[0005] The holes of the cast copper wire are caused by the H 2 O holes formed by the combination because the solubility of hydrogen and oxygen in the molten copper decreases during the solidification of the molten copper. Since the H 2 O holes are trapped during cooling, they are damaged during rolling. Thermodynamically, the concentrations of hydrogen and oxygen in the molten copper have a relationship represented by the following equation. [H] 2 [O] = p H2O · K Formula (A) where [H]: hydrogen concentration in molten copper [O]: oxygen concentration in molten copper p H2O : water vapor content in atmosphere Pressure K: Equilibrium constant.
【０００６】平衡定数Ｋは、温度の関数であり、一定温
度下では定数となるため、溶銅中の酸素濃度と水素濃度
は反比例の関係となる。そのため、還元によって脱酸す
るほど水素濃度が高くなり、凝固時にホールが形成され
易く、傷の多い、表面品質の悪い低酸素銅線しか製造で
きなくなる。即ち、脱酸のみでなく、脱水素も行わなけ
れば、凝固時にホールが大量に生成されて、表面品質の
良好な低酸素銅線を製造することができない。The equilibrium constant K is a function of temperature and becomes a constant at a constant temperature, so that the oxygen concentration and the hydrogen concentration in the molten copper have an inversely proportional relationship. Therefore, the more the deoxidation is caused by the reduction, the higher the hydrogen concentration becomes, the holes are easily formed at the time of solidification, and only a low-oxygen copper wire having many scratches and poor surface quality can be manufactured. That is, unless not only deoxidation but also dehydrogenation is performed, a large amount of holes are generated during solidification, and a low-oxygen copper wire having good surface quality cannot be manufactured.
【０００７】一方、一般的な脱ガス方法である酸化還元
法により、完全燃焼に近い状態で溶解させて水素濃度の
低い溶銅を得ることは可能であるが、ベルトキャスター
方式では、次いで脱酸を行うために長い移送距離を確保
しなければならず、現実的でない。On the other hand, it is possible to obtain molten copper having a low hydrogen concentration by dissolving in a state close to complete combustion by an oxidation-reduction method, which is a general degassing method. Therefore, a long transfer distance must be ensured in order to perform the operation, which is not practical.
【０００８】本発明は上記状況に鑑みてなされたもの
で、長い移送距離を確保せずに、脱水素が行え、凝固時
に生成されるホールを抑制して、表面品質の良好な低酸
素銅線を得ることのできる、銅線の製造方法及び製造装
置を提供すること、を目的とする。[0008] The present invention has been made in view of the above-mentioned circumstances, and can perform dehydrogenation without securing a long transfer distance, suppress holes generated during solidification, and provide a low-oxygen copper wire having good surface quality. It is an object of the present invention to provide a method and an apparatus for manufacturing a copper wire, which can obtain a copper wire.
【０００９】[0009]
【課題を解決するための手段】請求項１に記載の発明
は、溶銅を連続鋳造機に供給し、該連続鋳造機から導出
された棒状銅材を低酸素銅線に圧延する銅線の製造方法
であって、溶解炉の還元性雰囲気で燃焼を行い溶銅をつ
くる工程と、該溶解炉から送られた溶銅を所定の温度に
保持する保持炉と、該保持炉から送られた溶銅を非酸化
雰囲気でシール可能な鋳造樋を用いてタンディッシュま
で移送する工程と、該鋳造樋を通過する溶銅を脱水素処
理する工程と、を具備したことを特徴とする。According to a first aspect of the present invention, there is provided a copper wire for supplying molten copper to a continuous casting machine and rolling a bar-shaped copper material derived from the continuous casting machine into a low-oxygen copper wire. A method for producing a molten copper by burning in a reducing atmosphere of a melting furnace, a holding furnace for holding the molten copper sent from the melting furnace at a predetermined temperature, and a method for manufacturing the molten copper sent from the holding furnace. The method includes a step of transferring molten copper to a tundish using a casting gutter that can be sealed in a non-oxidizing atmosphere, and a step of dehydrogenating the molten copper passing through the casting gutter.
【００１０】また、請求項２に記載の発明は、溶銅を連
続鋳造機に供給し、該連続鋳造機から導出された棒状銅
材を低酸素銅線に圧延する銅線の製造装置であって、還
元性の雰囲気で燃焼を行い溶銅をつくる溶解炉と、該溶
解炉から送られた溶銅を所定の温度に保持する保持炉
と、該保持炉から送られた溶銅を非酸化雰囲気でシール
してタンディッシュまで移送する鋳造樋と、該鋳造樋に
設けられ通過する溶銅を脱水素処理する脱ガス手段とを
具備したことを特徴とする。[0010] The invention according to claim 2 is a copper wire manufacturing apparatus for supplying molten copper to a continuous casting machine and rolling a bar-shaped copper material derived from the continuous casting machine into a low oxygen copper wire. A melting furnace for producing molten copper by burning in a reducing atmosphere, a holding furnace for holding the molten copper sent from the melting furnace at a predetermined temperature, and a non-oxidizing method for the molten copper sent from the holding furnace. It is characterized by comprising a casting gutter for sealing and transferring to a tundish in an atmosphere, and degassing means provided in the casting gutter for dehydrogenating molten copper passing therethrough.
【００１１】こうした銅線の製造方法及び製造装置にお
いては、溶解炉において還元性の雰囲気で燃焼が行わ
れ、溶銅が脱酸される。脱酸された溶銅は、鋳造樋にお
いて非酸化雰囲気でシールされてタンディッシュまで移
送される。溶解炉において脱酸された溶銅は、酸素濃度
と水素濃度とが反比例の関係となることから、水素濃度
が高くなる。この水素濃度が高くなった溶銅は、鋳造樋
を通過する際に、脱ガス手段によって脱水素処理され
る。これにより、鋳造時のガスの放出が少なくなり、鋳
造銅材に生成されるホールが抑制され、線表面の傷が低
減される。In such a method and apparatus for producing a copper wire, combustion is performed in a reducing atmosphere in a melting furnace to deoxidize the molten copper. The deoxidized molten copper is sealed in a non-oxidizing atmosphere in a casting gutter and transported to a tundish. The molten copper deoxidized in the melting furnace has a high hydrogen concentration because the oxygen concentration and the hydrogen concentration have an inverse relationship. The molten copper having the increased hydrogen concentration is dehydrogenated by the degassing means when passing through the casting gutter. Thereby, gas emission during casting is reduced, holes generated in the cast copper material are suppressed, and scratches on the wire surface are reduced.
【００１２】請求項３に記載の発明は、請求項２に記載
の銅線の製造装置であって、前記脱ガス手段は、前記溶
銅を攪拌する攪拌手段であることを特徴とする。According to a third aspect of the present invention, there is provided the copper wire manufacturing apparatus according to the second aspect, wherein the degassing means is a stirring means for stirring the molten copper.
【００１３】この銅線の製造装置では、溶銅を攪拌する
ことで溶銅中の水素を強制的に追い出して、脱水素処理
が行える。すなわち、鋳造樋に、溶銅の当たる攪拌手段
が設けられているので、タンディッシュへ移送される前
の溶銅が攪拌手段に当たって攪拌され、非酸化雰囲気を
形成するために吹き込まれた不活性ガスと、溶銅との接
触性が良好となる。このとき、溶銅の水素分圧に対し不
活性ガス中の水素分圧は極めて小さいため、溶銅中の水
素は不活性ガス中に取り込まれ、溶銅の脱水素処理が行
えるものである。In this apparatus for producing a copper wire, the hydrogen in the molten copper is forcibly driven out by stirring the molten copper to perform a dehydrogenation treatment. That is, since the casting gutter is provided with a stirring means for hitting the molten copper, the molten copper before being transferred to the tundish is hit by the stirring means and stirred, and an inert gas blown to form a non-oxidizing atmosphere. And the contact property with molten copper becomes good. At this time, since the hydrogen partial pressure in the inert gas is extremely smaller than the hydrogen partial pressure in the molten copper, the hydrogen in the molten copper is taken into the inert gas, and the dehydrogenation of the molten copper can be performed.
【００１４】請求項４に記載の発明は、請求項３に記載
の銅線の製造装置であって、前記攪拌手段は、前記通過
する溶銅の流路を蛇行させる堰により構成されているこ
とを特徴とする。According to a fourth aspect of the present invention, in the copper wire manufacturing apparatus according to the third aspect, the stirring means is constituted by a weir for meandering the flow path of the passing molten copper. It is characterized by.
【００１５】この銅線の製造装置では、鋳造樋を通過す
る溶銅は堰によって蛇行するように流され、激しい流れ
となることで攪拌される。すなわち、溶銅自身の流れに
よって、自動的に攪拌されるようにできる。このよう
に、溶銅は堰によって上下あるいは左右に激しく流れる
ため、鋳造樋を流れる溶銅は万遍なく不活性ガスと接触
する機会があり、脱水素処理の効率が更に高められる。
この場合、例えば溶銅の流路に設けられる棒状、板状の
堰が好適となる。また、この堰は、溶銅の流れ方向に複
数、或いは溶銅の流れに直交する方向に複数設けられて
も良い。更に、この堰を、例えばカーボンによって作成
すれば、溶銅とカーボンとの接触によって、脱酸処理も
効率よく行うことができる。In this copper wire manufacturing apparatus, the molten copper passing through the casting gutter is flowed in a meandering manner by the weir, and is agitated by violent flow. That is, it can be automatically stirred by the flow of the molten copper itself. As described above, since the molten copper flows violently up and down or left and right by the weir, the molten copper flowing through the casting gutter has an opportunity to uniformly contact the inert gas, and the efficiency of the dehydrogenation treatment is further enhanced.
In this case, for example, a rod-shaped or plate-shaped weir provided in a flow path of molten copper is suitable. A plurality of weirs may be provided in the flow direction of the molten copper, or a plurality of weirs may be provided in a direction orthogonal to the flow of the molten copper. Furthermore, if this weir is made of, for example, carbon, deoxidation can be efficiently performed by contact between molten copper and carbon.
【００１６】[0016]
【発明の実施の形態】以下、本発明に係る銅線の製造方
法及び製造装置の好適な実施の形態を図面を参照して詳
細に説明する。図１は本発明に係る銅線の製造装置を概
略的に示した構成図、図２は図１の鋳造樋を平面視
（ａ）、側面視（ｂ）で示した要部拡大図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the method and apparatus for manufacturing a copper wire according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram schematically showing a copper wire manufacturing apparatus according to the present invention, and FIG. 2 is an enlarged view of a main part of the casting gutter of FIG. 1 shown in plan view (a) and side view (b). .
【００１７】本実施の形態による銅線の製造装置１は、
その主要部が、溶解炉Ａと、保持炉Ｂと、鋳造樋Ｃと、
連続鋳造機Ｄと、圧延機Ｅと、コイラーＦとから大別構
成されている。The apparatus 1 for manufacturing a copper wire according to the present embodiment
The main parts are melting furnace A, holding furnace B, casting gutter C,
It is roughly divided into a continuous casting machine D, a rolling mill E, and a coiler F.
【００１８】溶解炉Ａとしては、円筒形の炉本体を有す
る、例えばシャフト炉が好適に用いられている。溶解炉
Ａの下部には、円周方向に複数のバーナー（図示略）
が、上下方向に多段状に設けられている。この溶解炉Ａ
では、還元性の雰囲気で燃焼が行われて、溶銅（湯）が
つくられる。還元性の雰囲気は、例えば、天然ガスと空
気との混合ガスにおいて、燃料比を高めることで得られ
る。より具体的には、ＣＯ濃度を通常の０．５％から５
％とし、酸素濃度を通常の１００ｐｐｍから１０ｐｐｍ
とする。As the melting furnace A, for example, a shaft furnace having a cylindrical furnace body is preferably used. A plurality of burners (not shown) are provided in the lower part of the melting furnace A in the circumferential direction.
Are provided in multiple stages in the vertical direction. This melting furnace A
Then, combustion is performed in a reducing atmosphere to produce molten copper (hot water). The reducing atmosphere can be obtained, for example, by increasing the fuel ratio in a mixed gas of natural gas and air. More specifically, the CO concentration is increased from the normal 0.5% to 5%.
%, And the oxygen concentration is changed from the usual 100 ppm to 10 ppm.
And
【００１９】保持炉Ｂは、溶解炉Ａから送られた湯を、
所定の温度に保持したまま鋳造樋Ｃに送るためのもので
ある。鋳造樋Ｃは、保持炉Ｂから送られた湯を非酸化雰
囲気でシールしてタンディッシュ５まで移送する。シー
ルは、図２に示すように、鋳造樋Ｃの溶銅流路（溶銅の
流路）３１の上面を、カバー８により覆うことでなされ
る。この非酸化雰囲気は、例えば、窒素と一酸化炭素の
混合ガスやアルゴン等の希ガスを不活性ガスとして、鋳
造樋Ｃ内に吹き込むことで形成される。この鋳造樋Ｃに
は、通過する湯を脱水素処理する後述の攪拌手段（脱ガ
ス手段）３３が設けられている。The holding furnace B transfers the hot water sent from the melting furnace A,
This is for sending to the casting gutter C while maintaining the predetermined temperature. The casting gutter C transfers the hot water sent from the holding furnace B to the tundish 5 after sealing it in a non-oxidizing atmosphere. As shown in FIG. 2, the sealing is performed by covering the upper surface of the molten copper flow path (flow path of molten copper) 31 of the casting gutter C with the cover 8. This non-oxidizing atmosphere is formed, for example, by blowing a mixed gas of nitrogen and carbon monoxide or a rare gas such as argon as an inert gas into the casting gutter C. The casting gutter C is provided with a stirring means (degassing means) 33 described later for dehydrogenating the passing hot water.
【００２０】タンディッシュ５には、湯の流れ方向終端
に注湯ノズル９が設けられており、タンディッシュ５か
らの湯が連続鋳造機Ｄへ供給されるようになっている。The tundish 5 is provided with a pouring nozzle 9 at the end of the flow direction of the hot water, so that the hot water from the tundish 5 is supplied to the continuous casting machine D.
【００２１】銅線の製造装置１において、保持炉Ｂに
は、鋳造樋Ｃを介して、ベルトキャスター方式の連続鋳
造機Ｄが連結されている。この連続鋳造機Ｄは、周回移
動する無端ベルト１１と、この無端ベルト１１に円周の
一部を接触させて回転する鋳造輪１３とにより構成され
る。連続鋳造機Ｄは、さらに圧延機Ｅと連結されてい
る。In the copper wire manufacturing apparatus 1, a continuous casting machine D of a belt caster type is connected to a holding furnace B via a casting gutter C. The continuous casting machine D includes an endless belt 11 that moves around and a casting wheel 13 that rotates by bringing a part of the circumference into contact with the endless belt 11. The continuous casting machine D is further connected to a rolling mill E.
【００２２】圧延機Ｅは、連続鋳造機Ｄから出た棒状銅
材２３を、圧延して銅線２５とするものである。この圧
延機Ｅは、探傷器１９を介してコイラーＦに連結されて
いる。The rolling mill E rolls the copper bar 23 from the continuous casting machine D into a copper wire 25. The rolling mill E is connected to a coiler F via a flaw detector 19.
【００２３】従って、溶解炉Ａから保持炉Ｂへ移送され
た溶銅（湯）は、昇温度された後、鋳造樋Ｃ、タンディ
ッシュ５を経て連続鋳造機Ｄに供給され、連続鋳造機Ｄ
において連続鋳造され、連続鋳造機Ｄを出たところで棒
状銅材２３に成形される。この棒状銅材２３は、圧延機
Ｅによって圧延されて銅線（低酸素銅線）２５となり、
探傷器１９により傷の有無が検知されながらコイラーＦ
に巻回される。Accordingly, the molten copper (hot water) transferred from the melting furnace A to the holding furnace B is supplied to the continuous casting machine D via the casting trough C and the tundish 5 after the temperature is raised.
At the time of exiting the continuous casting machine D, and is formed into a rod-shaped copper material 23. This rod-shaped copper material 23 is rolled by a rolling mill E to become a copper wire (low-oxygen copper wire) 25,
While detecting the presence or absence of a flaw by the flaw detector 19, the coiler F
Wound around.
【００２４】ここで、上記したように、表面品質の良い
低酸素銅線を製造するためには、脱酸及び脱水素が重要
となる。本実施形態では、図２に示すように、脱水素処
理を含む脱ガスの手段として、鋳造樋Ｃ中の溶銅流路３
１に攪拌手段（脱ガス手段）３３を設けている。この攪
拌手段３３は、堰３３ａ、３３ｂ、３３ｃ、３３ｄから
構成されており、湯が激しく攪拌されながら流れるよう
にしている。Here, as described above, in order to manufacture a low-oxygen copper wire having good surface quality, deoxidation and dehydrogenation are important. In the present embodiment, as shown in FIG. 2, as a degassing means including a dehydrogenation treatment, the molten copper flow path 3 in the casting gutter C is used.
1 is provided with a stirring means (degassing means) 33. The stirring means 33 is composed of weirs 33a, 33b, 33c, 33d, and allows the hot water to flow while being vigorously stirred.
【００２５】堰３３ａは、溶銅流路３１の上側、すなわ
ちカバー８に設けられている。また、堰３３ｂは溶銅流
路３１の下側に、堰３３ｃは溶銅流路３１の左側に、堰
３３ｄは溶銅流路３１の右側に、各々設けられている。
これら堰３３ａ、３３ｂ、３３ｃ、３３ｄによって、湯
は上下左右に蛇行しながら図２中矢印方向に流れること
で激しい流れとなって攪拌され、脱ガス処理が行えるも
のである。なお、図２（ｂ）においては、湯面を符号３
２として示している。堰３３ｃ、３３ｄは、溶銅流路３
１の実際の長さに対して湯の流路を長くし、仮に鋳造樋
Ｃが短尺であっても、脱ガス処理の効率を高めるとこと
ができるものである。また、堰３３ａ、３３ｂは、脱ガ
ス処理前後の溶銅と雰囲気ガスとの混合を防止する役目
を果たすものである。なお、この攪拌手段３３は、主と
して脱水素処理の行うためのものであるが、湯が攪拌さ
れることで、湯中に残存している酸素も追い出すことが
できる。すなわち、脱ガス処理として、脱水素処理と２
度目の脱酸処理との両方が行われる。これら堰３３ａ、
３３ｂ、３３ｃ、３３ｄを、例えばカーボンによって作
成するようにすれば、溶銅とカーボンとの接触によっ
て、脱酸処理も効率よく行うことができる。The weir 33a is provided above the molten copper flow path 31, that is, on the cover 8. The weir 33b is provided below the molten copper flow path 31, the weir 33c is provided on the left side of the molten copper flow path 31, and the weir 33d is provided on the right side of the molten copper flow path 31.
By the weirs 33a, 33b, 33c, 33d, the hot water flows in the direction of the arrow in FIG. 2 while meandering up, down, left and right, and is stirred in a violent flow, so that degassing can be performed. In addition, in FIG.
It is shown as 2. The weirs 33c and 33d are connected to the molten copper flow path 3
The length of the hot water flow path is made longer than the actual length, and even if the casting gutter C is short, the efficiency of the degassing process can be increased. Further, the weirs 33a and 33b serve to prevent mixing of the molten copper and the atmospheric gas before and after the degassing process. The stirring means 33 is mainly for performing a dehydrogenation treatment. However, by stirring the hot water, the oxygen remaining in the hot water can be expelled. That is, as degassing treatment, dehydrogenation treatment and 2
Both a second deoxidation treatment is performed. These weirs 33a,
If 33b, 33c and 33d are made of, for example, carbon, deoxidation can be efficiently performed by contact between molten copper and carbon.
【００２６】ベルトキャスター方式の連続鋳造機Ｄで
は、溶銅の貯蔵と昇温のために上記の保持炉Ｂを設ける
必要があるが、本実施の形態での脱ガス処理は、この保
持炉Ｂ以降の移送過程において行う必要がある。その理
由は、低酸素銅線を得るために保持炉Ｂでは還元雰囲気
の燃焼、若しくは還元剤による脱酸を行うため、上記の
平衡式（Ａ）の関係から必然的に水素濃度が上昇するた
めである。In the continuous caster D of the belt caster type, it is necessary to provide the above-mentioned holding furnace B for storing and raising the temperature of the molten copper. This must be done in the subsequent transfer process. The reason is that, in order to obtain a low-oxygen copper wire, the holding furnace B burns in a reducing atmosphere or performs deoxidation with a reducing agent. It is.
【００２７】さらに、脱ガス処理を行う位置としては、
鋳造直前にあるタンディッシュ５での脱ガス処理も好ま
しくない。その理由は、タンディッシュ５で湯が激しく
攪拌されるような動作、例えばバブリングを行うと、湯
面が激しく振動し、注湯ノズル９から出る湯のヘッド圧
が変動し、安定した溶銅が連続鋳造機Ｄへ供給されない
ためである。一方、湯面が激しく振動しない程度では、
脱ガスの効果は期待できない。このことからも、保持炉
Ｂからタンディッシュ５までの移送過程において脱ガス
処理を行うのが好ましい。Further, the position for performing the degassing process is as follows:
Degassing in the tundish 5 immediately before casting is also undesirable. The reason is that when the operation of the tundish 5 in which the hot water is vigorously stirred, for example, when bubbling is performed, the hot water surface vibrates violently, the head pressure of the hot water coming out of the pouring nozzle 9 fluctuates, and stable molten copper is formed. This is because it is not supplied to the continuous casting machine D. On the other hand, if the surface does not vibrate violently,
The effect of degassing cannot be expected. For this reason, it is preferable to perform the degassing process in the transfer process from the holding furnace B to the tundish 5.
【００２８】このように構成される銅線の製造装置１で
は、溶解炉Ａにおいて還元性の雰囲気で燃焼が行われ、
溶銅が脱酸される。脱酸された溶銅は、鋳造樋Ｃにおい
て非酸化雰囲気でシールされてタンディッシュ５まで移
送される。溶解炉Ａにおいて脱酸された溶銅は、酸素濃
度と水素濃度とが反比例の関係となることから、水素濃
度が高くなる。この水素濃度が高くなった溶銅は、鋳造
樋Ｃを通過する際に、攪拌手段３３によって脱水素処理
される。In the copper wire manufacturing apparatus 1 configured as described above, combustion is performed in the melting furnace A in a reducing atmosphere.
The molten copper is deoxidized. The deoxidized molten copper is sealed in a non-oxidizing atmosphere in the casting gutter C and transferred to the tundish 5. The molten copper deoxidized in the melting furnace A has a high hydrogen concentration because the oxygen concentration and the hydrogen concentration have an inverse relationship. The molten copper having the increased hydrogen concentration is dehydrogenated by the stirring means 33 when passing through the casting gutter C.
【００２９】これにより、溶銅を酸素２０ｐｐｍ以下、
水素１ｐｐｍ以下に調整した後、鋳造・圧延を行うこと
で鋳造時のガスの放出が少なくなり、鋳造銅材に生成さ
れるホールが抑制され、線表面の傷が低減される。As a result, the molten copper is reduced to 20 ppm or less of oxygen,
By performing casting and rolling after adjusting the hydrogen to 1 ppm or less, the release of gas during casting is reduced, holes generated in the cast copper material are suppressed, and scratches on the wire surface are reduced.
【００３０】また、平衡式（Ａ）の関係から、水蒸気分
圧を下げることで溶銅のガス濃度が低下するため、脱水
素処理を施す前の溶銅と脱水素処理後の溶銅を完全に分
離することができ、さらなる脱ガス効果を得ることが可
能になる。これは、例えば移送過程において、上記のよ
うに攪拌手段３３を設けることで実現できる。即ち、こ
の攪拌手段３３は、脱水素処理前後の雰囲気ガスの混合
と、溶銅の混合とを防止する役目も果たすことになる。Further, from the relation of the equilibrium equation (A), since the gas concentration of the molten copper is reduced by lowering the partial pressure of steam, the molten copper before the dehydrogenation treatment and the molten copper after the dehydrogenation treatment are completely removed. And a further degassing effect can be obtained. This can be realized, for example, by providing the stirring means 33 as described above in the transfer process. That is, the stirring means 33 also serves to prevent mixing of the atmosphere gas before and after the dehydrogenation treatment and mixing of the molten copper.
【００３１】なお、この攪拌手段３３による分離は、一
箇所に限ったものではなく、移送過程の長さに応じて適
宜設置してもよい。また、全体を通して低酸素銅線に限
ったものではなく、適当な添加元素を混合することで低
酸素銅合金線を得ることも可能である。また、攪拌手段
３３として、堰３３ａ、３３ｂ、３３ｃ、３３ｄを溶銅
流路３１の上下左右に各々設けるようにしたが、鋳造樋
Ｃの長さや幅等によってこれら堰の個数や配置を適宜変
更しても、差し支えない。Incidentally, the separation by the stirring means 33 is not limited to one place, but may be appropriately set according to the length of the transfer process. Further, the oxygen-free copper wire is not limited to a low-oxygen copper wire throughout, and it is also possible to obtain a low-oxygen copper alloy wire by mixing an appropriate additive element. As the stirring means 33, weirs 33a, 33b, 33c, 33d are provided on the upper, lower, left, and right sides of the molten copper flow path 31, respectively, but the number and arrangement of these weirs are appropriately changed depending on the length and width of the casting gutter C. But it doesn't hurt.
【００３２】また、こうした銅線の製造装置１を用いた
製造方法により製造された低酸素銅線は、ガス放出特性
にも優れたものとなっている。図３に、本実施形態に係
る製造方法により製造された低酸素銅線のガス放出特性
（曲線ａ）と、従来のディップフォーミング法により製
造された低酸素銅線とのガス放出特性（曲線ｂ）と、を
各々示す。この図において、横軸は、試験開始からの経
過時間（秒）を、縦軸は、放出されたガスの量を、各々
示している。この図に示すように、本実施形態に係る製
造方法により製造された低酸素銅線の放出ガス量は、デ
ィップフォーミング法で製造された低酸素銅線の放出ガ
ス量に比べて極めて少ないことがわかる。The low-oxygen copper wire manufactured by the manufacturing method using the copper wire manufacturing apparatus 1 also has excellent gas release characteristics. FIG. 3 shows the gas release characteristics (curve a) of the low oxygen copper wire manufactured by the manufacturing method according to the present embodiment and the gas release characteristics (curve b) of the low oxygen copper wire manufactured by the conventional dip forming method. ) And are respectively shown. In this figure, the horizontal axis indicates the elapsed time (second) from the start of the test, and the vertical axis indicates the amount of released gas. As shown in this figure, the outgassing amount of the low oxygen copper wire manufactured by the manufacturing method according to the present embodiment is extremely smaller than the outgassing amount of the low oxygen copper wire manufactured by the dip forming method. Understand.
【００３３】放出されるガスの量が多い低酸素銅線ある
いは低酸素銅合金線が、高真空あるいは高温といった条
件下で使用された場合には、表面にふくれが発生して表
面品質を低下させたり、外部に放出して雰囲気を汚染さ
せるおそれがある。本実施形態に係る製造方法により製
造された低酸素銅線は、放出ガス量が非常に少なくなっ
ているので、例えば高真空となる粒子加速器、高温とな
る電子レンジ、等に用いて好適である。When a low-oxygen copper wire or a low-oxygen copper alloy wire, which releases a large amount of gas, is used under conditions such as high vacuum or high temperature, blisters are generated on the surface and the surface quality deteriorates. Or may be released to the outside and contaminate the atmosphere. Since the low-oxygen copper wire manufactured by the manufacturing method according to the present embodiment has a very small amount of released gas, it is suitable for use in, for example, a particle accelerator for high vacuum, a microwave oven for high temperature, and the like. .
【００３４】[0034]
【発明の効果】以上詳細に説明したように、本発明に係
る銅線の製造装置及び製造方法によれば、溶解炉におい
て還元性の雰囲気で燃焼が行われ、溶解炉から保持炉を
経てタンディッシュまで移送される溶銅が鋳造樋におい
て非酸化雰囲気でシールされ、さらに、この鋳造樋を通
過する溶銅が脱ガス手段によって脱水素処理されるの
で、還元によって脱酸するほど高くなる水素濃度を低く
することができ、凝固時にホールが形成され難くなり、
ホールの生成を抑制して、線表面の傷を低減するととも
に、放出ガス特性に優れた銅線を得ることができる。As described above in detail, according to the apparatus and method for manufacturing a copper wire according to the present invention, combustion is carried out in a reducing atmosphere in a melting furnace, and tanning is performed from a melting furnace through a holding furnace. The molten copper transported to the dish is sealed in the casting gutter in a non-oxidizing atmosphere, and the molten copper passing through the casting gutter is dehydrogenated by degassing means. And it becomes difficult to form holes during solidification,
It is possible to suppress the generation of holes, reduce scratches on the wire surface, and obtain a copper wire having excellent emission gas characteristics.
【００３５】また、脱ガス手段を、溶銅を攪拌する攪拌
手段とすれば、短時間で強制的に脱水素処理が行えるの
で、簡易な構成で効率よく脱水素処理を行うことができ
る。If the degassing means is a stirring means for stirring the molten copper, the dehydrogenation treatment can be forcibly performed in a short time, so that the dehydrogenation treatment can be efficiently performed with a simple configuration.
【００３６】更に、攪拌手段を、通過する溶銅の流路を
蛇行させる堰により構成すれば、溶銅自身の流れによっ
て自動的に攪拌されるので、特別にアクチュエータ等を
用いなくてよく、より簡易な構成で効率よく脱水素処理
を行うことができるとともに、銅線の製造装置の運転管
理も容易にできる。Further, if the stirring means is constituted by a weir for meandering the flow path of the passing molten copper, the stirring is automatically performed by the flow of the molten copper itself. The dehydrogenation process can be efficiently performed with a simple configuration, and the operation management of the copper wire manufacturing apparatus can be easily performed.
【図１】 本発明に係る銅線の製造装置を概略的に示
した構成図である。FIG. 1 is a configuration diagram schematically illustrating a copper wire manufacturing apparatus according to the present invention.
【図２】 図１の鋳造樋を平面視（ａ）、側面視
（ｂ）で示した要部拡大図である。FIG. 2 is an enlarged view of a main part showing the casting gutter of FIG. 1 in a plan view (a) and a side view (b).
【図３】 本実施形態に係る製造方法により製造され
た低酸素銅線と、従来のディップフォーミング法により
製造された低酸素銅線とのガス放出特性を比較するグラ
フ図である。FIG. 3 is a graph comparing gas release characteristics between a low oxygen copper wire manufactured by the manufacturing method according to the present embodiment and a low oxygen copper wire manufactured by a conventional dip forming method.
１ 銅線の製造装置 ５ タンディッシュ ２３ 棒状銅材 ２５ 銅線（低酸素銅線） ３１ 溶銅流路（溶銅の流路） ３３ 攪拌手段（脱ガス手段） ３３ａ、３３ｂ、３３ｃ、３３ｄ 堰 Ａ 溶解炉 Ｂ 保持炉 Ｃ 鋳造樋 Ｄ 連続鋳造機 DESCRIPTION OF SYMBOLS 1 Copper wire manufacturing apparatus 5 Tundish 23 Bar-shaped copper material 25 Copper wire (low-oxygen copper wire) 31 Molten copper flow path (molten copper flow path) 33 Stirring means (degassing means) 33a, 33b, 33c, 33d Weir A melting furnace B holding furnace C casting gutter D continuous casting machine
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ２２Ｄ 11/106 Ｂ２２Ｄ 11/106 Ａ 11/118 11/118 11/12 11/12 Ａ 35/00 35/00 Ｆ 45/00 45/00 Ｂ (72)発明者 堀 和雅 大阪府堺市築港新町３−１−９ 三菱マテ リアル株式会社堺工場内 (72)発明者 脇口 健二 大阪府堺市築港新町３−１−９ 三菱マテ リアル株式会社堺工場内 (72)発明者 服部 芳明 大阪府堺市築港新町３−１−９ 三菱マテ リアル株式会社堺工場内 Ｆターム(参考） 4E004 DA06 MB20 MD05 NB06 NC07 SB07 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI theme coat ゛ (Reference) B22D 11/106 B22D 11/106 A 11/118 11/118 11/12 11/12 A 35/00 35 / 00 F 45/00 45/00 B (72) Inventor Kazuma Hori 3-1-9 Chikko Shinmachi, Sakai City, Osaka Prefecture Mitsubishi Materials Corporation Sakai Plant (72) Inventor Kenji Wakiguchi Chikko Shinmachi, Sakai City, Osaka Prefecture 3-1-9 Mitsubishi Materials Corporation Sakai Plant (72) Inventor Yoshiaki Hattori 3-1-9 Chikko Shinmachi, Sakai City, Osaka Prefecture Mitsubishi Materials Corporation Sakai Plant F-term (reference) 4E004 DA06 MB20 MD05 NB06 NC07 SB07
Claims (4)
造機から導出された棒状銅材を低酸素銅線に圧延する銅
線の製造方法であって、 溶解炉の還元性雰囲気で燃焼を行い溶銅をつくる工程
と、 該溶解炉から送られた溶銅を所定の温度に保持する保持
炉と、 該保持炉から送られた溶銅を非酸化雰囲気でシール可能
な鋳造樋を用いてタンディッシュまで移送する工程と、 該鋳造樋を通過する溶銅を脱水素処理する工程と、 を具備したことを特徴とする銅線の製造方法。1. A method for producing a copper wire in which molten copper is supplied to a continuous casting machine, and a bar-shaped copper material derived from the continuous casting machine is rolled into a low-oxygen copper wire. A step of burning molten copper to form a molten copper, a holding furnace for holding the molten copper sent from the melting furnace at a predetermined temperature, and a casting gutter capable of sealing the molten copper sent from the holding furnace in a non-oxidizing atmosphere. A method for producing a copper wire, comprising: a step of transferring to a tundish by using the same; and a step of dehydrogenating molten copper passing through the casting gutter.
造機から導出された棒状銅材を低酸素銅線に圧延する銅
線の製造装置であって、 還元性の雰囲気で燃焼を行い溶銅をつくる溶解炉と、 該溶解炉から送られた溶銅を所定の温度に保持する保持
炉と、 該保持炉から送られた溶銅を非酸化雰囲気でシールして
タンディッシュまで移送する鋳造樋と、 該鋳造樋に設けられ通過する溶銅を脱水素処理する脱ガ
ス手段と、 を具備したことを特徴とする銅線の製造装置。2. A copper wire manufacturing apparatus for supplying molten copper to a continuous casting machine and rolling a bar-shaped copper material derived from the continuous casting machine into a low-oxygen copper wire, wherein combustion is performed in a reducing atmosphere. A melting furnace for producing molten copper, a holding furnace for holding the molten copper sent from the melting furnace at a predetermined temperature, and a method for sealing the molten copper sent from the holding furnace in a non-oxidizing atmosphere and transferring it to a tundish. An apparatus for producing a copper wire, comprising: a casting gutter to be used; and a degassing means provided in the casting gutter for dehydrogenating molten copper passing therethrough.
る攪拌手段であることを特徴とする請求項２に記載の銅
線の製造装置。3. The apparatus according to claim 2, wherein the degassing means is a stirring means for stirring the molten copper.
流路を蛇行させる堰により構成されていることを特徴と
する請求項３に記載の銅線の製造装置。4. The apparatus for producing a copper wire according to claim 3, wherein said stirring means comprises a weir for meandering the flow path of the passing molten copper.
Priority Applications (16)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000356325A JP3651386B2 (en) | 2000-02-24 | 2000-11-22 | Copper wire manufacturing method and manufacturing apparatus |
| EP01103599A EP1127947B1 (en) | 2000-02-24 | 2001-02-21 | Method for manufacturing low-oxygen copper wire rod |
| DE60119804T DE60119804T2 (en) | 2000-02-24 | 2001-02-21 | Process for the production of rod wire of low oxygen content copper |
| EP01103598A EP1127946B1 (en) | 2000-02-24 | 2001-02-21 | Installation for producing continuously cast low-oxygen copper ingots |
| DE60136977T DE60136977D1 (en) | 2000-02-24 | 2001-02-21 | Process for the continuous production of copper wire with low oxygen content |
| DE60113891T DE60113891T2 (en) | 2000-02-24 | 2001-02-21 | Plant for producing continuously cast billets of low-oxygen copper |
| EP05017856A EP1598433B1 (en) | 2000-02-24 | 2001-02-21 | Method for continuously producing low-oxygen copper wire |
| US09/789,594 US6589473B2 (en) | 2000-02-24 | 2001-02-22 | Apparatus for manufacturing low-oxygen copper |
| CA2337668A CA2337668C (en) | 2000-02-24 | 2001-02-23 | Method for manufacturing low-oxygen copper |
| CA002337670A CA2337670A1 (en) | 2000-02-24 | 2001-02-23 | Apparatus for manufacturing low-oxygen copper |
| KR1020010009354A KR100690253B1 (en) | 2000-02-24 | 2001-02-23 | Method for manufacturing low-oxygen copper |
| KR1020010009355A KR100690257B1 (en) | 2000-02-24 | 2001-02-23 | Apparatus for manufacturing low-oxygen copper |
| US09/791,767 US6944930B2 (en) | 2000-02-24 | 2001-02-26 | Method for manufacturing low-oxygen copper |
| CNB01104991XA CN1247349C (en) | 2000-02-24 | 2001-02-26 | Method for producing copper suboxide |
| CNB011049928A CN1210416C (en) | 2000-02-24 | 2001-02-26 | Equipment for producing copper suboxide |
| US11/194,568 US7524356B2 (en) | 2000-02-24 | 2005-08-02 | Method for manufacturing low-oxygen copper |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000-48005 | 2000-02-24 | ||
| JP2000048005 | 2000-02-24 | ||
| JP2000356325A JP3651386B2 (en) | 2000-02-24 | 2000-11-22 | Copper wire manufacturing method and manufacturing apparatus |
Publications (2)
| Publication Number | Publication Date |
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| JP2001314950A true JP2001314950A (en) | 2001-11-13 |
| JP3651386B2 JP3651386B2 (en) | 2005-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2000356325A Expired - Lifetime JP3651386B2 (en) | 2000-02-24 | 2000-11-22 | Copper wire manufacturing method and manufacturing apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009090310A (en) * | 2007-10-05 | 2009-04-30 | Mitsubishi Materials Corp | Method for continuously producing copper material |
| JP2010188362A (en) * | 2009-02-16 | 2010-09-02 | Mitsubishi Materials Corp | METHOD AND APPARATUS OF MANUFACTURING Cu-Mg BASED ROUGH DRAWING WIRE |
| JP2010201505A (en) * | 2009-02-03 | 2010-09-16 | Hitachi Cable Ltd | Casting material, method for producing the same, copper wire for magnet wire using the same, magnet wire and method for producing the same |
| US8251128B2 (en) | 2007-10-16 | 2012-08-28 | Mitsubishi Materials Corporation | Method of producing copper alloy wire |
| US9234263B2 (en) | 2010-10-20 | 2016-01-12 | Hitachi Metals, Ltd. | Weldment |
| US9805836B2 (en) | 2010-10-20 | 2017-10-31 | Hitachi Metals, Ltd. | Dilute copper alloy material and method of manufacturing dilute copper alloy member excellent in characteristics of resistance to hydrogen embrittlement |
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| CN115198105A (en) * | 2022-07-21 | 2022-10-18 | 江西泰和百盛实业有限公司 | Method for removing tellurium in process of producing high-purity low-oxygen copper rod from scrap copper |
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| JP5655269B2 (en) * | 2009-01-30 | 2015-01-21 | 三菱マテリアル株式会社 | Oxygen-free copper winding and method for manufacturing oxygen-free copper winding |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009090310A (en) * | 2007-10-05 | 2009-04-30 | Mitsubishi Materials Corp | Method for continuously producing copper material |
| US8251128B2 (en) | 2007-10-16 | 2012-08-28 | Mitsubishi Materials Corporation | Method of producing copper alloy wire |
| JP2010201505A (en) * | 2009-02-03 | 2010-09-16 | Hitachi Cable Ltd | Casting material, method for producing the same, copper wire for magnet wire using the same, magnet wire and method for producing the same |
| JP2010188362A (en) * | 2009-02-16 | 2010-09-02 | Mitsubishi Materials Corp | METHOD AND APPARATUS OF MANUFACTURING Cu-Mg BASED ROUGH DRAWING WIRE |
| US9809872B2 (en) | 2009-04-17 | 2017-11-07 | Hitachi Metals, Ltd. | Dilute copper alloy material, dilute copper alloy wire, dilute copper alloy twisted wire and cable using the same, coaxial cable and composite cable, and method of manufacturing dilute copper alloy material and dilute copper alloy wire |
| US9234263B2 (en) | 2010-10-20 | 2016-01-12 | Hitachi Metals, Ltd. | Weldment |
| US9805836B2 (en) | 2010-10-20 | 2017-10-31 | Hitachi Metals, Ltd. | Dilute copper alloy material and method of manufacturing dilute copper alloy member excellent in characteristics of resistance to hydrogen embrittlement |
| CN115198105A (en) * | 2022-07-21 | 2022-10-18 | 江西泰和百盛实业有限公司 | Method for removing tellurium in process of producing high-purity low-oxygen copper rod from scrap copper |
| CN115198105B (en) * | 2022-07-21 | 2023-07-21 | 江西泰和百盛实业有限公司 | Method for removing tellurium in process of producing high-purity low-oxygen copper rod from scrap copper |
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