JP3005742B2 - Method for manufacturing tin-covered rectangular copper wire - Google Patents
Method for manufacturing tin-covered rectangular copper wireInfo
- Publication number
- JP3005742B2 JP3005742B2 JP7031715A JP3171595A JP3005742B2 JP 3005742 B2 JP3005742 B2 JP 3005742B2 JP 7031715 A JP7031715 A JP 7031715A JP 3171595 A JP3171595 A JP 3171595A JP 3005742 B2 JP3005742 B2 JP 3005742B2
- Authority
- JP
- Japan
- Prior art keywords
- tin
- copper wire
- rolling
- wire
- hot
- 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 - Fee Related
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- Wire Processing (AREA)
- Coating With Molten Metal (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は錫覆平角銅線の製造方法
に関し、更に詳しくは、電子機器の機内配線材のフレキ
シブルフラット配線材等の導体として用いられる、厚さ
が０．１ｍｍ以下、幅が３ｍｍ以下の錫覆平角銅線の製
造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of producing a tin-covered rectangular copper wire, and more particularly to a method for producing a flexible flat wiring material or the like for an in-machine wiring material of electronic equipment, the thickness of which is 0.1 mm or less. The present invention relates to a method for producing a tin-covered rectangular copper wire having a width of 3 mm or less.
【０００２】[0002]
【従来の技術】従来より錫覆平角銅線はフレキシブルフ
ラット配線材やカード電線等の導体として用いられてい
るが、特にその厚さが０．１ｍｍ以下、幅が３ｍｍ以下
のものが好ましく用いられている。この錫覆平角銅線の
製造にあたっては、まず硬銅線母材を焼鈍加工して軟銅
線母材とし、続いてこの軟銅線母材を伸線加工すること
により所定の径の硬銅線材とする。次にこの硬銅線材を
焼鈍加工してから電気錫めっきを行い、被圧延線材とし
ての電気錫めっき軟銅線材とする。この際、前記電気錫
めっき軟銅線材は最終の製品である錫覆平角銅線の「幅
および厚さ」並びに「めっき厚さ」の各寸法を正しく得
るために、所定の径とされる。次に前記被圧延線材を圧
延加工し、更に焼鈍加工して錫覆平角銅線としていた。2. Description of the Related Art Conventionally, tin-covered rectangular copper wires have been used as conductors for flexible flat wiring materials and card wires, but those having a thickness of 0.1 mm or less and a width of 3 mm or less are preferably used. ing. In producing the tin-covered rectangular copper wire, first, the hard copper wire base material is annealed to form a soft copper wire base material, and then the soft copper wire base material is drawn to form a hard copper wire material having a predetermined diameter. I do. Next, the hard copper wire is annealed and then electro-tin-plated to obtain an electro-tin-plated soft copper wire as a rolled wire. At this time, the electro-tin-plated annealed copper wire has a predetermined diameter in order to correctly obtain the “width and thickness” and “plating thickness” of the tin-covered rectangular copper wire as a final product. Next, the wire to be rolled was rolled and further annealed to form a tin-covered rectangular copper wire.
【０００３】従来の錫覆平角銅線の製造方法について図
３の製造工程図を用いて詳しく説明する。まず、焼鈍加
工工程及び伸線加工工程からなる工程Ｉ’として、例え
ば０．８ｍｍφ近辺の硬銅線を硬銅線母材１ａとして用
意し、該硬銅線母材１ａを非酸化性ガス雰囲気の焼鈍炉
2-1 中に導き、該炉2-1 中を走行させて十分に焼鈍軟化
して軟銅線母材（図示せず）とした後、引き続いて伸線
装置６により伸線加工して所定の径（例えば０．３２
φ）の硬銅線材１ｈとして巻き枠に貯留する。A conventional method of manufacturing a tin-covered rectangular copper wire will be described in detail with reference to a manufacturing process diagram shown in FIG. First, as a process I ′ including an annealing process and a wire drawing process, a hard copper wire having a diameter of, for example, about 0.8 mm is prepared as a hard copper wire preform 1a, and the hard copper wire preform 1a is placed in a non-oxidizing gas atmosphere. Annealing furnace
After being guided through the furnace 2-1 and running through the furnace 2-1 to be sufficiently annealed and softened to form a soft copper wire base material (not shown), it is subsequently drawn by a wire drawing device 6 to a predetermined shape. Diameter (e.g. 0.32
φ) is stored in a winding frame as a hard copper wire 1h.
【０００４】次に、焼鈍加工工程及び電気錫めっき工程
からなる工程II’として前記巻き枠に貯留されていた硬
銅線材１ｈを窒素ガス等の非酸化性ガス雰囲気の焼鈍炉
2-2中に導き、該炉2-2 中を走行させて十分に焼鈍軟化
して、被錫めっき線材となる軟銅線材（図示せず）とし
た後、湿式の電気錫めっき装置２０中を走行させ、軟銅
線材の表面に連続して、所定の厚さの錫めっきを施して
電気錫めっき軟銅線材１ｉとなし、これを被圧延線材と
して巻き枠に貯留する。[0004] Next, as a process II 'consisting of an annealing process and an electro-tin plating process, the hard copper wire rod 1h stored in the above-mentioned reel is heated in an annealing furnace in a non-oxidizing gas atmosphere such as nitrogen gas.
After being guided into the furnace 2-2 and running through the furnace 2-2, it is sufficiently annealed and softened to form a soft copper wire (not shown) to be a wire to be tin-plated. It is made to run, and the surface of the soft copper wire is continuously tin-plated to a predetermined thickness to form an electro-tin-plated soft copper wire 1i, which is stored as a wire to be rolled in a winding frame.
【０００５】圧延加工工程及び焼鈍加工工程からなる工
程III ’として、巻き枠に貯留されていた電気錫めっき
軟銅線材１ｉを平角圧延装置８に導き、連続して圧延加
工し、所定の「幅および厚さ」並びにめっき厚さの錫覆
平角硬銅線材１ｊとした後、引き続いて非酸化性ガス雰
囲気の焼鈍炉2-3 中を走行させて十分に焼鈍軟化して錫
覆平角銅線１’として巻き枠に巻き取り、フレキシブル
フラットケーブルの導体として供してきた。なお、前記
の各巻き枠は図示していない（以後の比較例に於いても
同様）。[0005] As a process III 'consisting of a rolling process and an annealing process, the electro-tin-plated annealed copper wire 1i stored in the bobbin is guided to a flat rolling mill 8 and continuously rolled to obtain a predetermined width and width. Thickness and plating thickness of the tin-covered flat copper wire 1j, and subsequently run in an annealing furnace 2-3 in a non-oxidizing gas atmosphere to sufficiently soften the annealing to obtain a tin-covered flat copper wire 1 '. As a conductor of a flexible flat cable. The respective winding frames are not shown (the same applies to comparative examples hereinafter).
【０００６】[0006]
【発明が解決しようとする課題】上記従来の電気錫めっ
き装置を用いた錫覆平角銅線の製造方法に於いては、工
程Ｉ’の伸線加工工程で所定の線径迄加工された硬銅線
材（被電気錫めっき硬銅線材）を電気錫めっき装置に供
給するに際しては、硬銅線材と電気めっき装置の電極と
の接触状態を長時間にわたって安定した状態で保ち、全
長にわたって均一で偏りがなく、圧延加工に耐える緻密
で柔軟な錫めっき層を得るために、また、後工程での取
り扱いやすさのために、該硬銅線材を焼鈍炉中を走行さ
せて十分に焼鈍軟質化している。In the above-mentioned conventional method for producing a tin-covered rectangular copper wire using an electro-tin plating apparatus, a hard wire processed to a predetermined wire diameter in a wire drawing process of a process I '. When supplying a copper wire (electro-tin-plated hard copper wire) to an electro-tin plating apparatus, the contact state between the hard copper wire and the electrode of the electro-plating apparatus is maintained for a long time in a stable state, and the entire length is uniform and uneven. Without, in order to obtain a dense and flexible tin plating layer that can withstand the rolling process, and for ease of handling in the post-process, by running the hard copper wire in an annealing furnace to sufficiently soften the annealing I have.
【０００７】しかしながら、前記焼鈍炉を用いた熱処理
について本発明者等が鋭意研究した結果、この熱処理は
最終製品のフレキシブルフラット配線材等の導体特性の
向上に有効な効果を及ぼさないという欠点があるのを見
いだしたものである。However, the inventors of the present invention have conducted intensive studies on the heat treatment using the annealing furnace. As a result, this heat treatment has a drawback that it does not have an effective effect on improving the conductor characteristics of the final product such as a flexible flat wiring material. Was found.
【０００８】また、圧延加工工程に供する被圧延線材は
その表面に電解析出のままの電気錫めっき層を有する電
気錫めっき軟銅線材であることから、圧延加工後に得ら
れる錫覆平角銅線の幅方向のサイズ変動が大きくなると
いう欠点があり、このため最近のフラット配線材等に要
求される品質特性の値を十分に満足することが出来ない
という問題があった。また耐折り曲げ特性の向上のため
の柔軟性、特にその代表となる伸び特性の向上がなされ
ないという問題があった。Further, since the wire to be rolled to be subjected to the rolling process is an electro-tin-plated annealed copper wire having an electro-tin-plated layer on the surface as it is electrolytically deposited, the tin-covered flat copper wire obtained after the rolling process is formed. There is a drawback that the size variation in the width direction increases, and therefore, there has been a problem that the value of quality characteristics required for recent flat wiring materials and the like cannot be sufficiently satisfied. In addition, there is a problem that flexibility for improving the bending resistance, particularly the elongation characteristic, which is a typical example thereof, cannot be improved.
【０００９】また、圧延加工後の錫覆平角銅線は、電解
析出により形成された電気錫めっき層からヒゲ状のバリ
が該平角銅線の両耳部に発生しやすいという問題があ
り、その改善が必要とされていた。更に電解析出の電気
錫めっき層の表面は酸化変色を起こしやすいため、圧延
加工後の焼鈍炉中の雰囲気を非酸化性に保つ必要がある
とともにその雰囲気中の酸素濃度の管理も厳密に行う必
要があった。また得られた錫覆平角銅線は保管条件によ
っては酸化変色が進みやすく、製品としての価値を失っ
てしまうという問題があった。また圧延加工により被圧
延線材から離脱する錫粉カスの発生が多く、圧延装置を
汚染してしまうという問題があった。[0009] In addition, the tin-covered rectangular copper wire after the rolling process has a problem that whisker-like burrs tend to be generated at both ears of the rectangular copper wire from an electrotin plating layer formed by electrolytic deposition. The improvement was needed. Furthermore, since the surface of the electrolytic tin plating layer of the electrolytic deposition is liable to undergo oxidative discoloration, the atmosphere in the annealing furnace after rolling needs to be kept non-oxidizing and the oxygen concentration in the atmosphere is strictly controlled. Needed. In addition, the obtained tin-covered rectangular copper wire has a problem that oxidation discoloration is apt to proceed depending on storage conditions, and the value as a product is lost. Further, there is a problem in that tin powder debris detached from the wire to be rolled due to the rolling process is often generated, and the rolling device is contaminated.
【００１０】本発明は上記従来技術が有する各種問題点
を解決するためになされたものであり、圧延加工によっ
て得られる錫覆平角銅線の幅方向の寸法のバラツキが従
来品と比べて小さく、また伸び特性に優れ、また製品価
値を損なう酸化変色がなく、また圧延加工後の錫覆平角
銅線の両耳部にヒゲ状のバリの発生がなく、更に圧延加
工による離脱錫粉カスの発生が少ない錫覆平角銅線の製
造方法を提供することを目的とする。The present invention has been made to solve the above-mentioned various problems of the prior art, and the tin-covered rectangular copper wire obtained by the rolling process has a smaller variation in the width direction dimension than the conventional product. In addition, it has excellent elongation characteristics, there is no oxidation discoloration that impairs product value, there is no burr-like burrs on both ears of the tin-covered rectangular copper wire after rolling, and there is the generation of detached tin dust by rolling. It is an object of the present invention to provide a method for producing a tin-covered rectangular copper wire having a small content.
【００１１】[0011]
【課題を解決するための手段】上記目的を達成するため
に本発明は、硬銅線母材を非酸化性ガス雰囲気の焼鈍炉
中を走行させ、該硬銅線母材を軟銅線母材にする焼鈍加
工工程と、前記焼鈍炉と直結し，溶融錫めっき浴表面が
非酸化性ガス雰囲気中にある溶融錫めっき装置に前記軟
銅線母材を導き、溶融錫めっき浴から垂直上方向に走行
させて溶融錫めっきを施し、溶融錫めっき軟銅線材とす
る溶融錫めっき工程とからなる工程Ｉ；と、前記溶融錫
めっき軟銅線材を伸線装置を用い減面率３５％以上で伸
線加工し、錫覆硬銅線材とする工程II（伸線加工工
程）；と、前記工程IIにより得られた錫覆硬銅線材を平
角圧延装置を用い、圧延率６０％以上で圧延加工し、錫
覆平角硬銅線材とする圧延加工工程と、前記圧延加工工
程により得られた錫覆平角硬銅線材を錫の溶融温度前後
の焼鈍炉中を走行させ銅材が十分に再結晶するまで焼鈍
加工し、錫覆平角銅線とする焼鈍加工工程とからなる工
程III ；とからなる錫覆平角銅線の製造方法にある。In order to achieve the above object, the present invention provides a hard copper wire preform which is run in an annealing furnace in a non-oxidizing gas atmosphere, and the hard copper wire preform is made of a soft copper wire preform. Annealing, and directing the soft copper wire base material to a hot-dip tin plating apparatus in which the surface of the hot-dip plating bath is in a non-oxidizing gas atmosphere, and is directly connected to the annealing furnace, and is vertically moved upward from the hot-dip tin plating bath. Step I: a hot-dip tin-plating process in which the hot-dip tin-coated annealed copper wire is subjected to hot-dip tin plating to form a hot-dip tinned annealed copper wire; Step II (drawing step) to obtain a tin-coated hard copper wire; and rolling the tin-coated hard copper wire obtained in the above-mentioned step II at a rolling reduction of 60% or more using a flat rolling mill, Rolling process to form an oblong rectangular hardened copper wire, and tin cladding obtained by the rolling process A step of running the square hardened copper wire in an annealing furnace at a temperature around the melting point of tin and annealing until the copper material is sufficiently recrystallized to form a tin-covered rectangular copper wire. The present invention is directed to a method of manufacturing a flat copper wire.
【００１２】また本発明は、前記溶融錫めっき浴に酸化
防止剤が添加されている錫覆平角銅線の製造方法にあ
る。The present invention also resides in a method for producing a tin-covered rectangular copper wire in which an antioxidant is added to the hot-dip plating bath.
【００１３】[0013]
【作用】本発明の錫覆平角銅線の製造方法は、特に次の
〜に示すように、従来方法とは異なるな新規な方法
を用いており、それが、最終製品の特性に大きな作用，
効果をもたらしているものである。まずとして、工程
Ｉの焼鈍加工工程及び溶融錫めっき工程において、硬銅
線母材１ａは非酸化性ガス雰囲気の焼鈍炉２中で焼鈍さ
れてから、直ちに非酸化性ガス雰囲気４中の溶融錫めっ
き装置３で溶融錫めっきが施され、溶融錫めっき軟銅線
材１ｂとなる。特にこの溶融錫めっき工程においては、
本発明者等の発明である「特公昭６３−６０８２５号」
の溶融めっき方法を応用して溶融めっきが施されている
ものである。The method for producing a tin-covered rectangular copper wire according to the present invention employs a novel method which is different from the conventional method, as shown in the following (1) to (4), which has a great effect on the characteristics of the final product.
The effect has been brought. First, in the annealing step and the molten tin plating step of Step I, the hard copper wire base material 1a is annealed in the annealing furnace 2 in a non-oxidizing gas atmosphere, and immediately thereafter, the molten tin in the non-oxidizing gas atmosphere 4 is melted. Hot-dip tin plating is performed by the plating device 3 to obtain a hot-dip tinned soft copper wire 1b. Especially in this hot-dip tin plating process,
"Japanese Patent Publication No. 63-60825" which is an invention of the present inventors.
The hot-dip plating method is applied to the hot-dip plating method.
【００１４】従って、焼鈍軟化された銅線母材の表面に
めっき厚の偏りのない均一な所定厚さの溶融錫めっきが
施されるうえに、従来の湿式電気錫めっき方法では困難
であったＳｎ−Ｐ金属間化合物などからなる酸化防止剤
の添加を容易に行うことが出来る。例えばＳｎ−Ｐ金属
間化合物の中のリン（Ｐ）に代表される微量の変色防止
剤は溶融錫めっき浴中に均一に添加することができ、こ
れが添加された溶融錫が溶融めっきされることにより、
酸化防止剤を含んだ溶融めっき層が形成される。従っ
て、製品としての錫覆平角銅線やフラット配線材等にお
いても錫めっき層の酸化変色が防止でき、この点が従来
の電気めっき法よる錫めっき層との際立った違いであ
る。Accordingly, the surface of the annealed and softened copper wire base material is coated with a uniform thickness of molten tin without unevenness in plating thickness, and is difficult with the conventional wet-type electro-tin plating method. An antioxidant composed of a Sn-P intermetallic compound or the like can be easily added. For example, a trace amount of a discoloration inhibitor represented by phosphorus (P) in a Sn-P intermetallic compound can be uniformly added to a molten tin plating bath, and the molten tin to which this is added is hot-dipped. By
A hot-dip plating layer containing an antioxidant is formed. Therefore, the tin-plated layer can be prevented from being oxidized and discolored even in a tin-covered rectangular copper wire or a flat wiring material as a product, which is a remarkable difference from the tin-plated layer obtained by the conventional electroplating method.
【００１５】として、工程IIの伸線加工工程に於い
て、前記溶融錫めっき軟銅線材１ｂは伸線装置６に導か
れて減面率３５％以上で伸線加工が施され、所定の線径
を有する錫覆硬銅線材１ｃとなる。次いで前記錫覆平角
銅線１ｃは、工程III の圧延加工工程に供する被圧延線
材として、該錫覆平角銅線１ｃを焼鈍軟化することな
く、平角圧延装置８に導かれて圧延率６０％以上で圧延
加工され、所定の「幅および厚さ」並びに所定の「錫覆
厚さ」を有する錫覆平角硬銅線材１ｄとなる。In the wire drawing step of step II, the molten tin-plated annealed copper wire 1b is guided to a wire drawing device 6 and drawn at a reduction in area of 35% or more, and has a predetermined wire diameter. Is obtained. Next, the tin-covered flat copper wire 1c is guided to the flat-rolling mill 8 without subjecting the tin-covered flat copper wire 1c to annealing and softening as a wire to be subjected to the rolling process of Step III, and the rolling rate is 60% or more. To form a tin-covered rectangular hard copper wire 1d having a predetermined “width and thickness” and a predetermined “tin-covering thickness”.
【００１６】前記丸線の硬銅線母材１ａが平角状の錫覆
平角銅線１になる迄に受ける最終的な加工率は「減面率
と圧延率を加えた」ものとなる。従って、本発明の錫覆
平角銅線は最終的な加工率が９５％以上となり、強加工
が行われていることになる。そして、この強加工を施す
ことにより、心線の銅材の再結晶が低温側で起こり、更
に錫被覆層の溶融点温度前後の温度でも十分に再結晶化
が進む。従って、従来方法によるものよりも、錫めっき
層の機械的特性，特に伸び特性が極めて優れたものが得
られ、最終製品であるフラット配線材の重要な性能の一
つである耐折り曲げ特性の向上に有効に寄与する。The final processing rate that the round hard copper wire base material 1a receives until it becomes the rectangular tin-covered flat copper wire 1 is "the sum of the area reduction rate and the rolling rate". Accordingly, the tin-covered rectangular copper wire of the present invention has a final processing rate of 95% or more and is subjected to strong processing. By performing this strong working, recrystallization of the copper material of the core wire occurs on the low temperature side, and further, recrystallization sufficiently proceeds even at a temperature around the melting point temperature of the tin coating layer. Therefore, the mechanical properties of the tin plating layer, particularly the elongation properties, are extremely superior to those obtained by the conventional method, and the bending resistance, which is one of the important properties of the flat wiring material as the final product, is improved. Effectively contributes to
【００１７】また、強加工を施すことにより、工程III
の焼鈍加工工程に於ける焼鈍温度は錫被覆層の溶融点温
度前後の温度でも良くなるので錫被覆層は溶融しなくな
る。従って、錫被覆層は溶融変形がなく、例え変形した
としても実用上問題にならない程度となり、錫被覆層に
要求される寸法精度の変動が小さくなる。また、圧延加
工工程に供する被圧延線材はその表面に溶融錫めっき層
を有する硬銅線材であることから、圧延加工後に得られ
る錫覆平角銅線の幅寸法のサイズ変動が従来方法と比較
して小さくなる。これは被圧延加工線材の硬さが前加工
により均一化されるためであると考えられる。その結
果、フラット配線材等に要求される特性を今まで以上に
満足する程に安定させることが出来るようになる。Further, by performing the strong working, the step III
Since the annealing temperature in the annealing process of step (1) may be around the melting point of the tin coating layer, the tin coating layer does not melt. Therefore, the tin coating layer is not melt-deformed, and even if it is deformed, there is no practical problem, and the dimensional accuracy required for the tin coating layer is reduced. In addition, since the wire to be rolled to be subjected to the rolling process is a hard copper wire having a hot-dip tinned layer on its surface, the size variation of the width dimension of the tin-covered rectangular copper wire obtained after rolling is smaller than that of the conventional method. Smaller. It is considered that this is because the hardness of the wire to be rolled is made uniform by the pre-processing. As a result, the characteristics required for the flat wiring material and the like can be stabilized so as to be more satisfactory than ever.
【００１８】として、本発明は、従来方法のような、
電解析出した結晶組織を有する電気錫めっき層を直接圧
延加工するのとは異なり、錫の溶融状態から凝固析出し
た結晶組織を有する溶融錫めっき層を伸線加工し、加工
組織の錫被覆層としてから圧延加工を施しているもので
ある。As described above, according to the present invention, as in the conventional method,
Unlike the direct rolling process of the electrolytic tin plating layer having the crystal structure of electrolytic deposition, the molten tin plating layer having the crystal structure solidified and precipitated from the molten state of tin is drawn, and the tin coating layer of the processed structure is formed. After that, the rolling process is performed.
【００１９】従って、伸線加工によって得られる加工組
織の錫被覆層が圧延加工されるので、圧延後の錫覆平角
硬銅線材の両耳部に錫のヒゲ状バリの発生がなくなり、
また脱落錫粉の発生も大幅に少なくなる。Therefore, since the tin coating layer having the processed structure obtained by the wire drawing is rolled, tin-shaped burrs are not generated on both ears of the tin-covered flat rectangular copper wire after rolling.
Also, the generation of falling tin powder is greatly reduced.
【００２０】なお、「減面率３５％以上で伸線加工し」
と限定した理由は、３５％未満の減面率では得られる錫
覆平角銅線の伸び特性が従来の方法により得られる錫覆
平角銅線の伸び特性と比較して改善されないからであ
る。また「圧延率６０％以上で圧延加工し」と限定した
理由は断面が円形状の心線を圧延してフラット配線材等
に用いる平角線材を得るためには、最低の圧延率が６０
％は必要であり、これ以下では望ましい平角線材が得ら
れないためである。[0020] In addition, "drawing wire at a reduction of area of 35% or more"
The reason is that the elongation characteristic of the obtained tin-covered rectangular copper wire is not improved as compared with the elongation characteristic of the tin-coated flat copper wire obtained by the conventional method at a reduction in area of less than 35%. In addition, the reason for limiting to “rolling at a rolling rate of 60% or more” is that the minimum rolling rate is 60 to obtain a flat wire used for flat wiring material by rolling a core wire having a circular cross section.
% Is necessary, and if it is less than this, a desired rectangular wire cannot be obtained.
【００２１】[0021]
【実施例】本発明の錫覆平角銅線の製造方法について図
１，２を用いて説明する。なお本発明は本実施例に限定
されるものではない。図１は本発明の錫覆平角銅線の製
造方法を示す工程図である。また、図２は本発明の錫覆
平角銅線の製造方法の第１実施例を示す略図であり、
（ａ）は工程Ｉの焼鈍加工工程及び溶融錫めっき工程を
示す略図、（ｂ）は工程IIの伸線加工工程を示す略図、
また（ｃ）は工程III の圧延加工工程及び焼鈍加工工程
を示す略図である。 実施例１ まず、工程Ｉの焼鈍加工工程として、０．８ｍｍφまで
伸線加工され巻き枠ｍ１に貯留された硬銅線母材１ａを
繰り出し、非酸化性ガスとして１０vol ％水素を含む窒
素ガス雰囲気からなる５５０℃の焼鈍炉２に導いて焼鈍
加工を施し、銅材を十分に再結晶化させて軟銅線母材と
する。次に溶融錫めっき工程として、間断無く前記焼鈍
炉２と直結した溶融錫めっき装置３に導き、非酸化性ガ
スとして１０vol ％水素を含む窒素ガス雰囲気４中にあ
り，リン（Ｐ）を０．０３％含有する溶融錫浴５中に導
き、２０ｍ／分の速度で該浴５から垂直上方向に引き上
げ、大気中を走行させて溶融めっき層を冷却，凝固させ
２０μｍ厚さの微量リンを含む溶融錫めっきを施し、被
伸線加工材である溶融錫めっき軟銅線材１ｂとして巻き
枠ｍ２に巻き取った。DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for producing a tin-covered rectangular copper wire according to the present invention will be described with reference to FIGS. Note that the present invention is not limited to the present embodiment. FIG. 1 is a process chart showing a method for producing a tin-covered rectangular copper wire according to the present invention. FIG. 2 is a schematic view showing a first embodiment of a method for producing a tin-covered flat copper wire of the present invention.
(A) is a schematic diagram showing an annealing process and a hot-dip plating process of a process I, (b) is a schematic diagram showing a wire drawing process of a process II,
(C) is a schematic view showing a rolling step and an annealing step of Step III. Example 1 First, as an annealing step of Step I, a hard copper wire base material 1a drawn to 0.8 mmφ and stored in a winding frame m1 was fed out, and a nitrogen gas atmosphere containing 10 vol% hydrogen as a non-oxidizing gas was used. To a 550 ° C. annealing furnace 2 for annealing, and the copper material is sufficiently recrystallized to obtain a soft copper wire base material. Next, as a hot-dip tin plating step, the hot-dip tin plating apparatus 3 is connected to the hot-dip tin plating apparatus 3 directly connected to the annealing furnace 2 without interruption, and is placed in a nitrogen gas atmosphere 4 containing 10 vol% hydrogen as a non-oxidizing gas. Introduced into a molten tin bath 5 containing 03%, lifted vertically upward from the bath 5 at a speed of 20 m / min, and allowed to run in the atmosphere to cool and solidify the hot-dip coating layer and contain a trace amount of phosphorus with a thickness of 20 μm. Hot-dip tin plating was performed, and the resultant was wound around a winding frame m2 as a hot-dip tinned annealed copper wire 1b as a material to be drawn.
【００２２】次に工程IIの伸線加工工程として、前記巻
き枠ｍ２に貯留されていた溶融錫めっき軟銅線材１ｂを
伸線装置６に導き、組ダイス７を通過させ、減面率８４
％で線径が０．３２ｍｍφまで８００ｍ／分の速度で伸
線加工を施し、被平角圧延線材である錫覆硬銅線材１ｃ
として巻き枠ｍ３に巻き取った。Next, as a wire drawing process of Step II, the molten tin-plated annealed copper wire 1b stored in the winding m2 is guided to a wire drawing device 6, passed through a die assembly 7, and reduced in area by 84%.
The wire diameter is 0.32 mmφ and the wire is subjected to wire drawing at a speed of 800 m / min.
And wound around a winding frame m3.
【００２３】次に工程III の圧延加工工程として、前記
巻き枠ｍ３に貯留されていた錫覆硬銅線材１ｃを平角圧
延装置８に導き、圧延ロール９の間を通過させ、６９％
の圧延率を与えて線速９０ｍ／分の速度で圧延加工を施
し、厚さが０．１ｍｍ，幅が０．８ｍｍの錫覆平角硬銅
線材１ｄとする。引き続いて焼鈍工程として、大気雰囲
気からなる３００℃の焼鈍炉１０を通過させて錫覆平角
硬銅線材１ｄを焼鈍加工して銅材を再結晶化させ、錫覆
平角銅線１として巻き枠ｍに巻き取った。なお、前記減
面率及び圧延率は下記数式１及び２で算出した値であ
る。Next, as a rolling step of the step III, the tin-coated hard copper wire 1c stored in the winding m3 is guided to the flattening mill 8 and passed between the rolling rolls 9 to obtain 69%
The rolling process is performed at a linear speed of 90 m / min at a rolling rate of 90 mm / min to obtain a tin-covered flat hard copper wire 1d having a thickness of 0.1 mm and a width of 0.8 mm. Subsequently, as an annealing step, the tin-covered rectangular hard copper wire 1d is passed through an annealing furnace 10 at 300 ° C. in an air atmosphere to be annealed to recrystallize the copper material. Wound up. The area reduction rate and the rolling reduction are values calculated by the following formulas 1 and 2.
【００２４】[0024]
【数１】 (Equation 1)
【００２５】[0025]
【数２】 (Equation 2)
【００２６】実施例２ 前記実施例１と同様の手段で０．８ｍｍφの硬銅線母材
１ａの表面に２０μｍ厚さの微量リンを含む溶融錫めっ
きを施し、被伸線加工線材である溶融錫めっき軟銅線材
１ｂとして巻き枠ｍ２に巻き取った。Example 2 A surface of a 0.8 mmφ hard copper wire base material 1 a was subjected to hot tin plating containing a trace amount of phosphorous having a thickness of 20 μm by the same means as in Example 1 to obtain a wire to be drawn. It was wound around a winding frame m2 as a tin-plated annealed copper wire 1b.
【００２７】次に工程IIの伸線加工工程として、前記巻
き枠ｍ２に貯留されていた溶融錫めっき軟銅線材１ｂを
伸線装置６に導き、組ダイス７を通過させ、減面率９４
％で線径が０．２３ｍｍφまで線速８００ｍ／分の速度
で伸線加工を施し、被平角圧延線材である錫覆硬銅線材
１ｃとして巻き枠ｍ３に巻き取った。Next, as a wire drawing processing step of the step II, the molten tin-plated annealed copper wire 1b stored in the winding m2 is guided to the wire drawing device 6, passed through the assembling die 7, and reduced in area 94%.
The wire was subjected to drawing at a speed of 800 m / min to a wire diameter of 0.23 mmφ in%, and was wound on a winding frame m3 as a tin-coated hard copper wire 1c, which is a flat rolled wire.
【００２８】次に工程III の圧延加工工程として、前記
巻き枠ｍ３に貯留されていた０．２０ｍｍφの錫覆硬銅
線材１ｃを平角圧延装置８に導き、圧延ロール９の間を
通過させ、７８％の圧延率を与えて９０ｍ／分の速度で
圧延加工を施し、厚さが０．０５ｍｍ，幅が０．８ｍｍ
の錫覆平角硬銅線材１ｄとした後、引き続いて焼鈍加工
工程として、大気雰囲気からなる３００℃の焼鈍炉１０
を通過させて錫覆平角硬銅線材１ｄを焼鈍加工して銅材
粒子を再結晶化させ、錫覆平角銅線１として巻き枠ｍに
巻き取った。Next, as a rolling step of Step III, the tin-clad hard copper wire 1c having a diameter of 0.20 mm stored in the winding m3 is guided to the flattening mill 8 and passed between the rolling rolls 9 to 78. % And a rolling rate of 90 m / min with a thickness of 0.05 mm and a width of 0.8 mm
Then, as an annealing step, a 300 ° C. annealing furnace 10 made of an air atmosphere is used.
Through which the tin-covered rectangular hard copper wire 1 d is annealed to recrystallize the copper material particles and wound up as a tin-covered rectangular copper wire 1 around a winding frame m.
【００２９】比較例 比較例について図３を用いて説明する。 比較例１ まず、焼鈍加工工程及び伸線加工工程からなる工程Ｉ’
として、０．８ｍｍφまで伸線加工され巻き枠に貯留さ
れた硬銅線母材１ａを繰り出し、非酸化性ガスとして１
０vol ％水素を含む窒素ガス雰囲気からなる５５０℃の
焼鈍炉2-1 に導いて焼鈍加工を施し、軟銅線母材（図示
せず）とした後、伸線装置６の組ダイス（図示せず）を
通過させ、線径が０．３２ｍｍφまで８００ｍ／分の速
度で伸線加工を施し、硬銅線材１ｈとして巻き枠に巻き
取った。Comparative Example A comparative example will be described with reference to FIG. Comparative Example 1 First, a process I ′ including an annealing process and a wire drawing process
As a non-oxidizing gas, a hard copper wire base material 1a drawn to 0.8 mmφ and stored in a reel is fed out.
After leading to an annealing furnace 2-1 at 550 ° C. in a nitrogen gas atmosphere containing 0 vol% hydrogen to perform an annealing process to form an annealed copper wire base material (not shown), a set die (not shown) of the wire drawing apparatus 6 is formed. ), The wire was drawn to a wire diameter of 0.32 mmφ at a speed of 800 m / min, and wound into a winding form as a hard copper wire 1 h.
【００３０】次に焼鈍加工工程及び電気錫めっき工程か
らなる工程II’として、前記硬銅線材１ｈを上記と同様
の非酸化性ガス雰囲気の焼鈍炉2-2 に導き、銅材を十分
に再結晶化させて軟銅線材（図示せず）とした後、引き
続いて該線材の表面を清浄化してから朋弗化錫溶液を電
解液として用いた湿式の電気錫めっき装置２０に導いて
５０ｍ／分の速度で電気錫めっきを施し、６μｍ厚さの
錫めっき層を設けた電気錫めっき軟銅線材１ｉとして巻
き枠に巻き取った。Next, as a step II 'consisting of an annealing step and an electro-tin plating step, the hard copper wire 1h is guided to an annealing furnace 2-2 in a non-oxidizing gas atmosphere similar to the above, and the copper material is sufficiently regenerated. After being crystallized into a soft copper wire (not shown), the surface of the wire is subsequently cleaned and then led to a wet electrotin plating apparatus 20 using a tin fluorofluoride solution as an electrolytic solution to 50 m / min. And tinned on a reel as an electrotin-plated soft copper wire 1i provided with a tin plating layer having a thickness of 6 μm.
【００３１】更に、圧延加工工程及び焼鈍加工工程から
なる工程III ’として、前記電気錫めっき軟銅線材１ｉ
を実施例１と同様の平角圧延装置８に導き、圧延ロール
（図示せず）の間を通過させ、６９％の圧延率を与えて
９０ｍ／分の速度で圧延加工を施し、厚さが０．１ｍ
ｍ，幅が０．８ｍｍの錫覆平角硬銅線材１ｊとした後、
引き続いて上記と同様の非酸化性ガス雰囲気の３００℃
の焼鈍炉ｊを通過させて錫覆平角硬銅線材１ｊを焼鈍加
工して銅材を再結晶化させ、錫覆平角銅線１’とし巻き
枠に巻き取った。Further, as a process III 'consisting of a rolling process and an annealing process, the electro-tin plated soft copper wire 1i
Was passed through a rolling mill (not shown) similar to that in Example 1, passed between rolling rolls (not shown), and rolled at a speed of 90 m / min at a rolling reduction of 69% to a thickness of 0 m / min. .1m
m, after forming a tin-covered flat rectangular hard copper wire 1j having a width of 0.8 mm,
Subsequently, at 300 ° C. in the same non-oxidizing gas atmosphere as above.
Was passed through an annealing furnace j, and the tin-covered rectangular hard copper wire 1j was annealed to recrystallize the copper material, and was wound as a tin-covered rectangular copper wire 1 'around a winding frame.
【００３２】比較例２ まず、焼鈍加工工程及び伸線加工工程からなる工程Ｉ’
として、０．８ｍｍφまで伸線加工され巻き枠に貯留さ
れた硬銅線母材１ａを繰り出し、比較例１における工程
Ｉ’と同様の焼鈍加工工程及び伸線加工工程によって９
４％の減面率を与えて、線径が０．２０ｍｍφまで８０
０ｍ／分の速度で伸線加工を施し、硬銅線材１ｈとして
巻き枠に巻き取った。次に前記硬銅線材１ｈを比較例１
と同様の工程II’によって５０ｍ／分の速度で電気錫め
っきを施し、６μｍ厚さの錫めっき層を設けた電気錫め
っき軟銅線材１ｉとして巻き枠に巻き取った。更に、比
較例１と同様の工程III ’の圧延加工工程によって、６
９％の圧延率を与えて９０ｍ／分の速度で圧延加工を施
し、厚さが０．０５ｍｍ，幅が０．８ｍｍの錫覆平角硬
銅線材１ｊとした後、引き続いて比較例１と同様の工程
III ’の焼鈍加工工程によって、非酸化性ガス雰囲気の
３００℃の焼鈍炉2-3 を通過させて錫覆平角硬銅線材１
ｊを焼鈍加工して銅材を再結晶化させ、錫覆平角銅線
１’として巻き枠に巻き取った。Comparative Example 2 First, a step I 'comprising an annealing step and a wire drawing step
As a result, the hard copper wire base material 1a drawn to 0.8 mmφ and stored in a winding reel is fed out, and subjected to the same annealing process and wire drawing process as step I ′ in Comparative Example 1.
Give a wire reduction of 4% and reduce the wire diameter to 0.20 mmφ
Wire drawing was performed at a speed of 0 m / min, and the wire was wound around a winding frame as a hard copper wire 1 h. Next, the hard copper wire 1h was used in Comparative Example 1
Electrotin plating was performed at a speed of 50 m / min by the same process II ′ as in the above, and was wound around a bobbin as an electrotin-plated annealed copper wire 1 i provided with a tin plating layer having a thickness of 6 μm. Further, by a rolling step III ′ similar to that of Comparative Example 1,
Rolling was performed at a speed of 90 m / min by giving a rolling reduction of 9% to obtain a tin-covered rectangular hard copper wire 1j having a thickness of 0.05 mm and a width of 0.8 mm, and subsequently the same as Comparative Example 1. Process
In the annealing process of III ′, the wire is passed through an annealing furnace 2-3 at 300 ° C. in a non-oxidizing gas atmosphere to obtain a tin-covered flat copper wire 1
j was annealed to recrystallize the copper material, and was wound around a spool as a tin-covered rectangular copper wire 1 '.
【００３３】特性試験 前記実施例１、２および比較例１、２により得られた錫
覆平角銅線の性能、特性について試験した結果を下記表
１に示す。Characteristics Tests The results of tests on the performance and characteristics of the tin-coated rectangular copper wires obtained in Examples 1 and 2 and Comparative Examples 1 and 2 are shown in Table 1 below.
【００３４】[0034]
【表１】 [Table 1]
【００３５】[0035]
【発明の効果】本発明の錫覆平角銅線の製造方法によれ
ば、従来方法のように平角圧延に供する線径で電気めっ
き処理するのとは異なり、平角圧延の前の伸線加工工程
に供するよりも太い線径の段階で溶融めっきが施される
ため、めっき処理が容易で単位時間当たりにめっき処理
される線材収量が多くなるので生産性の向上を計ること
が可能となった。また、溶融錫めっき浴に酸化防止剤が
容易に添加出来るので、製品価値を損なう酸化変色がな
くなった。また、丸線の硬銅線母材が平角状の錫覆平角
銅線になる迄に受ける最終的な加工率は「減面率と圧延
率を加えた」ものとなるが、本発明の錫覆平角銅線はこ
の値が９５％以上の強加工になるので錫の溶融点前後の
温度で伸線の銅材は十分に再結晶化が完了し、銅材が有
する本来の機械的特性を得ることが出来るようになっ
た。従って、従来方法では得られなかった柔軟で伸び特
性に優れ、フラット配線材等の最終製品に於いて耐屈曲
性に優れたものとなった。また、被圧延加工線材は、錫
覆硬銅線材であることから、圧延加工によって得られる
錫覆平角銅線の幅方向の寸法のバラツキが従来品と比べ
て小さくなった。また、圧延加工後の錫覆平角銅線の両
耳部にヒゲ状のバリの発生がなく、更に圧延加工による
離脱錫粉カスの発生が少なくなった。従って、フラット
配線材等の導体としての錫覆平角銅線の性能，特性が従
来方法によって得られていた品質レベルに比べて非常に
優れたものとなり、強いては、電子機器の信頼性の向上
に大きな貢献をもたらすものであるので産業に寄与する
ところ極めて大である。According to the method for producing a tin-covered rectangular copper wire of the present invention, unlike the conventional method, in which the electroplating is performed with a wire diameter used for the rectangular rolling, a wire drawing process before the rectangular rolling is performed. Since the hot-dip plating is performed at a stage of a wire diameter larger than that provided in the above, the plating process is easy and the yield of the wire rod plated per unit time increases, so that it is possible to improve the productivity. In addition, since an antioxidant can be easily added to the molten tin plating bath, oxidation discoloration that impairs product value has been eliminated. In addition, the final processing rate received before the round hard copper wire base material becomes a rectangular tin-covered flat copper wire is "the sum of the area reduction rate and the rolling rate". Since the value of this value is 95% or more for the flat copper wire, the copper material of the drawn wire is fully recrystallized at a temperature around the melting point of tin, and the original mechanical properties of the copper material are maintained. Now you can get it. Therefore, it is flexible and has excellent elongation characteristics, which cannot be obtained by the conventional method, and has excellent bending resistance in a final product such as a flat wiring material. Further, since the wire to be rolled is a tin-covered hard copper wire, the variation in the width direction of the tin-covered rectangular copper wire obtained by rolling is smaller than that of a conventional product. In addition, no burr-like burrs were generated at both ears of the tin-covered rectangular copper wire after the rolling, and the generation of detached tin powder scum due to the rolling was reduced. Therefore, the performance and characteristics of the tin-covered rectangular copper wire as a conductor of a flat wiring material and the like are very excellent as compared with the quality level obtained by the conventional method. It is a great contribution to the industry because it makes a significant contribution.
【図１】本発明の錫覆平角銅線の製造方法の一実施例を
示す製造工程図である。FIG. 1 is a manufacturing process diagram showing one embodiment of a method for manufacturing a tin-covered rectangular copper wire of the present invention.
【図２】本発明の錫覆平角銅線の製造方法の第１実施例
を示す概略図である。（ａ）は工程Ｉの焼鈍加工工程及
び溶融錫めっき工程を示す略図である。（ｂ）は工程II
の伸線加工工程を示す略図である。（ｃ）は工程III の
圧延加工工程及び焼鈍加工工程を示す略図である。FIG. 2 is a schematic view showing a first embodiment of a method for producing a tin-covered rectangular copper wire according to the present invention. (A) is a schematic diagram which shows the annealing process of the process I, and the hot-dip-tin plating process. (B) is Step II
5 is a schematic view showing a wire drawing process of FIG. (C) is a schematic diagram showing a rolling step and an annealing step of Step III.
【図３】従来の錫覆平角銅線の製造方法を示す製造工程
図である。FIG. 3 is a manufacturing process diagram showing a conventional method for manufacturing a tin-covered rectangular copper wire.
１ 錫覆平角銅線 １ａ 硬銅線母材 １ｂ 溶融錫めっき軟銅線材 １ｃ 錫覆硬銅線材 １ｄ 錫覆平角硬銅線材 ２ 非酸化性ガス雰囲気の焼鈍炉 ３ 溶融錫めっき装置 ４ 非酸化性ガス雰囲気 ５ 溶融錫めっき浴 ６ 伸線装置 ７ ダイス ８ 平角圧延装置 ９ 圧延ロール １０ 焼鈍炉 ｍ，ｍ１，ｍ２，ｍ３ 巻き枠 DESCRIPTION OF SYMBOLS 1 Tin-covered flat copper wire 1a Hard copper wire base material 1b Hot-dip tinned soft copper wire 1c Tin-covered hard copper wire 1d Tin-covered flat copper wire 2 Annealing furnace in non-oxidizing gas atmosphere 3 Hot-dip tin plating apparatus 4 Non-oxidizing gas Atmosphere 5 Hot-dip tin bath 6 Wire drawing device 7 Dies 8 Flat-rolling device 9 Rolling roll 10 Annealing furnace m, m1, m2, m3 Reel
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平４−293757（ＪＰ，Ａ) 特開 平２−133129（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C23C 2/00 - 2/40 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-293757 (JP, A) JP-A-2-133129 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C23C 2/00-2/40
Claims (2)
炉中を走行させ、該硬銅線母材を軟銅線母材にする焼鈍
加工工程と、前記焼鈍炉と直結し，溶融錫めっき浴表面
が非酸化性ガス雰囲気中にある溶融錫めっき装置に前記
軟銅線母材を導き、溶融錫めっき浴から垂直上方向に走
行させて溶融錫めっきを施し、溶融錫めっき軟銅線材と
する溶融錫めっき工程とからなる工程Ｉ；と、前記溶融
錫めっき軟銅線材を伸線装置を用い減面率３５％以上で
伸線加工し、錫覆硬銅線材とする工程II（伸線加工工
程）；と、前記工程IIにより得られた錫覆硬銅線材を平
角圧延装置を用い、圧延率６０％以上で圧延加工し、錫
覆平角硬銅線材とする圧延加工工程と、前記圧延加工工
程により得られた錫覆平角硬銅線材を錫の溶融温度前後
の焼鈍炉中を走行させ銅材が十分に再結晶するまで焼鈍
加工し、錫覆平角銅線とする焼鈍加工工程とからなる工
程III ；とからなることを特徴とする錫覆平角銅線の製
造方法。An annealing step of running a hard copper wire base material in an annealing furnace in a non-oxidizing gas atmosphere to convert the hard copper wire base material into a soft copper wire base material, and directly connecting to the annealing furnace and melting. The surface of the tin plating bath is guided into the hot tin plating apparatus in a non-oxidizing gas atmosphere, and the soft copper wire base material is vertically vertically moved from the hot tin plating bath to perform hot tin plating. Step I consisting of a hot-dip tin plating step; and Step II (tinning processing) of drawing the hot-tinned annealed copper wire with a wire drawing apparatus at a surface reduction rate of 35% or more to obtain a tin-covered hard copper wire. Rolling) the tin-coated hard copper wire obtained in the step II by using a flat rolling machine at a rolling rate of 60% or more to obtain a tin-coated flat copper wire; and the rolling process. The tin-coated rectangular hard copper wire obtained in the process is run in an annealing furnace at a temperature around the melting point of tin. The manufacturing method of tin Kutsugaetaira rectangular copper wire, characterized in that it consists of; wood is annealed processed until fully recrystallized, step III consisting of the annealing processing step to tin Kutsugaetaira rectangular copper wire.
されていることを特徴とする請求項１記載の錫覆平角銅
線の製造方法。2. The method for producing a tin-covered rectangular copper wire according to claim 1, wherein an antioxidant is added to the molten tin plating bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7031715A JP3005742B2 (en) | 1995-01-27 | 1995-01-27 | Method for manufacturing tin-covered rectangular copper wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7031715A JP3005742B2 (en) | 1995-01-27 | 1995-01-27 | Method for manufacturing tin-covered rectangular copper wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08199325A JPH08199325A (en) | 1996-08-06 |
| JP3005742B2 true JP3005742B2 (en) | 2000-02-07 |
Family
ID=12338770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7031715A Expired - Fee Related JP3005742B2 (en) | 1995-01-27 | 1995-01-27 | Method for manufacturing tin-covered rectangular copper wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3005742B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5255668B2 (en) * | 2010-06-11 | 2013-08-07 | 古河電気工業株式会社 | Solder plated wire manufacturing method and manufacturing apparatus |
| JP4855534B1 (en) * | 2010-11-08 | 2012-01-18 | 三菱電線工業株式会社 | Method for producing plated wire |
| CN102899598A (en) * | 2012-09-29 | 2013-01-30 | 苏州宇邦新型材料有限公司 | Integrated annealing, tin plating and shaft closing device for photovoltaic welding strips |
| CN103014583B (en) * | 2012-11-26 | 2014-08-06 | 江苏太阳光伏科技有限公司 | Production method of clean and pollution-free supersoft tin-plated solder strip |
| CN103774078B (en) * | 2014-01-24 | 2015-12-09 | 东莞市胜蓝电子有限公司 | Wetting device, tin sticky equipment and tin sticky method |
| CN108772612A (en) * | 2018-07-16 | 2018-11-09 | 浙江德通科技有限公司 | Novel tin immersion furnace |
| CN116652315B (en) * | 2023-06-09 | 2024-06-07 | 浙江东爵线缆有限公司 | Tin coating equipment and tin coating method |
-
1995
- 1995-01-27 JP JP7031715A patent/JP3005742B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08199325A (en) | 1996-08-06 |
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