JP2579820B2 - Metal wire hot-dip plating method - Google Patents
Metal wire hot-dip plating methodInfo
- Publication number
- JP2579820B2 JP2579820B2 JP1207548A JP20754889A JP2579820B2 JP 2579820 B2 JP2579820 B2 JP 2579820B2 JP 1207548 A JP1207548 A JP 1207548A JP 20754889 A JP20754889 A JP 20754889A JP 2579820 B2 JP2579820 B2 JP 2579820B2
- Authority
- JP
- Japan
- Prior art keywords
- metal wire
- spray
- cooling
- plated
- plating method
- 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
Links
Landscapes
- Coating With Molten Metal (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、金属線の溶融めっき方法の改良、特に溶融
めっきを施した金属線の冷却方法の改良に関するもので
ある。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a hot-dip plating method for a metal wire, and more particularly to an improvement in a cooling method for a hot-dip metal wire.
［従来の技術］ 抵抗やコンデンサ等の電子部品に使用されるリード線
には、錫めっき銅線や半田めっき銅線等の金属めっき線
が使用されている。[Prior Art] Metal-plated wires such as tin-plated copper wires and solder-plated copper wires are used for lead wires used for electronic components such as resistors and capacitors.
このようなめっき金属線の製造方法としては、従来よ
り、金属線を錫や半田等の溶融金属浴中を通過させてめ
っきを施し、垂直方向に引き上げて空気中にて自然冷却
し、その後水中に送り込んで冷却するという方法が一般
に採用されてきている。As a method for manufacturing such a plated metal wire, conventionally, a metal wire is passed through a molten metal bath such as tin or solder to perform plating, pulled up vertically, naturally cooled in air, and then cooled in water. In general, a method of cooling by feeding into a cooling medium has been adopted.
しかし、水中で冷却を行なう方法では、めっき金属線
が水中に入るときに大きな抵抗力が作用し、めっき表面
に凹凸が生じやすく、又、水によって急激に冷却される
ので、めっき層の内層部と外層部とでは熱収縮差が大き
くなり、めっき表面に割れが生じやすく、結果的に均一
なめっき層を有するめっき金属線を得ることが困難であ
るという欠点がある。However, in the method of cooling in water, when the plated metal wire enters the water, a large resistance acts, and the plating surface is likely to have irregularities, and is cooled rapidly by water. There is a disadvantage that the difference in heat shrinkage between the outer layer portion and the outer layer portion is large, cracks are easily generated on the plating surface, and as a result, it is difficult to obtain a plated metal wire having a uniform plating layer.
この欠点を改善するために、めっき金属線を溶融金属
浴から垂直に引き上げて空気中で自然冷却した後、噴霧
液滴中に導いて冷却する方法が検討されている。このよ
うな噴霧液滴中での冷却方法によれば、めっき金属線が
冷却装置に入るときの抵抗力は殆どなくなり、且つ、噴
霧液滴により徐々に冷却されることから、めっき表面に
凹凸や割れが生じるのを防止できるようになる。In order to remedy this drawback, a method has been studied in which a plated metal wire is vertically pulled out of a molten metal bath, naturally cooled in air, and then guided into spray droplets for cooling. According to such a cooling method in the spray droplets, the resistance when the plated metal wire enters the cooling device is almost eliminated, and since the cooling is gradually performed by the spray droplets, the plating surface has irregularities or irregularities. Cracks can be prevented from occurring.
［発明が解決しようとする課題］ しかしながら、噴霧液滴による冷却の場合の最大の課
題は冷却不足が生ずることであり、このことは、めっき
金属線の製造速度の低下、あるいは冷却装置の大型化の
いずれかの選択を余儀なくされる。すなわち、水中での
冷却による冷却ゾーン長さ20〜30mmと同等の冷却効果を
静止噴霧液滴中で得るには、冷却ゾーン長さを2000mm以
上としなければならず、このように冷却ゾーンが長大化
すると、通過中のめっき金属線が横揺れしてめっきが不
均一になるという問題が新たに生ずる。冷却ゾーンの長
大化を避けようとするには、製造速度の低下を強いられ
ることになる。[Problems to be Solved by the Invention] However, the biggest problem in the case of cooling by spray droplets is that cooling is insufficient, which causes a reduction in the production speed of plated metal wires or an increase in the size of a cooling device. You will be forced to choose one. That is, in order to obtain a cooling effect equivalent to a cooling zone length of 20 to 30 mm by cooling in water in a still spray droplet, the cooling zone length must be 2000 mm or more. In such a case, there arises a new problem that the plated metal wire passing through is rolled and the plating becomes non-uniform. In order to avoid the lengthening of the cooling zone, the production speed must be reduced.
噴霧液滴中での冷却効果を向上させるための一手段と
して、特開昭62−1848号公報には、一対の噴霧ノズルを
複数段有する噴霧冷却装置中をめっき金属線を通過させ
て冷却する方法が開示されている。しかしながら、この
冷却方法では、装置中に配置された噴霧ノズルからの噴
霧液滴は、めっき金属線に横方向から噴霧されることに
なり、めっき金属線の外周に圧力差が生じ、めっき層の
厚さが横断面内において異なる、いわゆる偏肉が発生し
やすくなる。液滴の噴霧圧力を弱くすれば偏肉の発生を
防止できるが、静止噴霧液滴中での冷却に近くなり、め
っき金属線の冷却不足は不可避となる。As one means for improving the cooling effect in spray droplets, Japanese Patent Application Laid-Open No. 62-1848 discloses cooling by passing a plated metal wire through a spray cooling device having a plurality of pairs of spray nozzles. A method is disclosed. However, in this cooling method, the spray droplets from the spray nozzle arranged in the apparatus are sprayed from the lateral direction onto the plating metal wire, and a pressure difference is generated on the outer periphery of the plating metal wire, so that the plating layer The so-called uneven thickness, whose thickness differs in the cross section, is likely to occur. If the spray pressure of the droplets is reduced, uneven thickness can be prevented from occurring, but the cooling becomes close to cooling in stationary spray droplets, and insufficient cooling of the plated metal wire is inevitable.
本発明の目的はかかる従来技術の欠点を解消し、めっ
き表面の凹凸や割れの発生及びめっき層の偏肉の発生を
防止できる金属溶融めっき方法の提供を目的とするもの
である。又、本発明は、冷却装置の大型化を招くことな
く高速度でめっき金属線を製造することができる金属溶
融めっき方法の提供を目的とするものである。An object of the present invention is to solve the drawbacks of the prior art and to provide a metal hot-dip plating method capable of preventing the occurrence of irregularities and cracks on the plating surface and the occurrence of uneven thickness of the plating layer. Another object of the present invention is to provide a metal hot-dip plating method capable of producing a plated metal wire at a high speed without increasing the size of a cooling device.
［課題を解決するための手段］ 本発明の金属線溶融めっき方法は、金属線を溶融金属
浴中を通過させてめっきを施し、空気中で自然冷却した
後溶融めっき金属線の進行方向とは相対する方向に噴霧
液滴が流動している噴霧ゾーン内を通過させて冷却する
ことを特徴とするものである。[Means for Solving the Problems] The metal wire hot-dip plating method of the present invention is to pass a metal wire through a molten metal bath, perform plating, cool naturally in air, and then proceed with the hot-dip metal wire. It is characterized in that the cooling is performed by passing through the spray zone in which the spray droplets flow in opposite directions.
［作用］ 本発明は、冷却媒体として噴霧液滴を使用するため、
めっき金属線が冷却装置に入るときの抵抗力は殆どなく
なり、且つ、冷却は徐々になされることから、めっき表
面に凹凸や割れが生じるのを防止できるようになる。
又、めっき金属線の進行方向とは相対する方向に噴霧液
滴が流動している噴霧ゾーン内で冷却されるため、めっ
き金属線の外周に加わる圧力は均一となり、噴霧圧力を
大きくしても偏肉の発生を防止できる。更に、噴霧圧力
を大きくして流動速度を上げることにより冷却効率を向
上でき、以って溶融めっき金属線の製造速度を向上でき
る。[Operation] The present invention uses spray droplets as a cooling medium,
There is almost no resistance when the plated metal wire enters the cooling device, and since the cooling is performed gradually, it is possible to prevent the occurrence of irregularities and cracks on the plated surface.
Further, since the cooling is performed in the spray zone in which the spray droplets are flowing in the direction opposite to the traveling direction of the plated metal wire, the pressure applied to the outer periphery of the plated metal wire becomes uniform, and even if the spray pressure is increased. The occurrence of uneven thickness can be prevented. Further, the cooling efficiency can be improved by increasing the flow rate by increasing the spray pressure, thereby improving the production speed of the hot-dip metal wire.
［発明の実施例］ 添付図面を参照して本発明の一実施例について説明す
る。An embodiment of the present invention will be described with reference to the accompanying drawings.
銅線等の金属線１には、溶融金属浴２中にて錫あるい
は半田等の金属めっきが施される。めっき金属線１は線
ガイド３により向きが垂直方向に変えられ、溶融金属浴
２から引き上げられ、続いて、一旦空気中で自然冷却さ
れた後冷却筒４において冷却され、線ガイド11を通過後
巻取られる。A metal wire 1 such as a copper wire is plated with a metal such as tin or solder in a molten metal bath 2. The plated metal wire 1 is turned in the vertical direction by the wire guide 3, pulled up from the molten metal bath 2, subsequently cooled naturally in the air, then cooled in the cooling cylinder 4, and passed through the wire guide 11. It is wound up.
冷却筒４は、めっき金属線１の進行方向に沿って、す
なわち、地面に対して垂直に設置されている。冷却筒４
の上端部付近にはＹ字状に枝分かれした分岐管５が設け
られ、この分岐管５に噴霧ノズル６が配置される。噴霧
ノズル６からは、圧縮空気中に水を分散させた噴霧液滴
７が噴出され、冷却筒４内には噴霧液滴７が図中の矢印
（イ）の方向に流動している噴霧ゾーン８が形成され
る。冷却筒４の下端９は開放状態となっており、噴霧ノ
ズル６からの噴霧液滴７は何の障害も受けることなく高
速で下方に流動することになる。冷却筒４の下方には、
水受け10が設けられており、噴霧液滴７は図中の矢印
（ロ）に示すような方向に流動して大気中に飛散するの
で、溶融金属浴２中への流入を防止できる。The cooling cylinder 4 is installed along the traveling direction of the plated metal wire 1, that is, perpendicular to the ground. Cooling cylinder 4
A branch pipe 5 branched in a Y-shape is provided in the vicinity of the upper end of the nozzle, and a spray nozzle 6 is arranged in the branch pipe 5. Spray droplets 7 in which water is dispersed in compressed air are ejected from the spray nozzles 6, and a spray zone in which the spray droplets 7 flow in the direction of the arrow (a) in the drawing in the cooling cylinder 4. 8 are formed. The lower end 9 of the cooling cylinder 4 is in an open state, and the spray droplets 7 from the spray nozzle 6 flow downward at high speed without any obstacle. Below the cooling cylinder 4,
A water receiver 10 is provided, and the sprayed droplets 7 flow in the direction shown by the arrow (b) in the figure and scatter in the atmosphere, so that they can be prevented from flowing into the molten metal bath 2.
このように、噴霧ノズル６からの噴霧液滴７は何らの
障害を受けることなくめっき金属線１の走行方向とは反
対方向に直線的に流動するため、めっき金属線１の外周
には均一に圧力が加わり、偏肉を生じることがなくな
る。なお、分岐管５の枝分かれ部付近では噴霧液滴７は
めっき金属線１に斜め上方向から噴霧され、わずかなが
ら外周に圧力の変化が生じるが、この付近ではめっき層
は既に固化しているので偏肉のおそれはない。As described above, since the spray droplets 7 from the spray nozzle 6 flow linearly in the direction opposite to the running direction of the plated metal wire 1 without any obstacle, the outer periphery of the plated metal wire 1 is uniformly distributed. Pressure is applied and uneven thickness does not occur. In the vicinity of the branch portion of the branch pipe 5, the spray droplets 7 are sprayed from obliquely upward onto the plating metal wire 1 and a slight change in pressure occurs on the outer periphery. However, since the plating layer has already been solidified in this vicinity, There is no risk of uneven thickness.
噴霧ゾーン８における噴霧液滴７の流動速度は高速に
すればするほど冷却力は増すが、めっき金属線１の走行
速度との相対速度が3m/秒以上、好ましくは4.5m/秒以上
であると優れた冷却効果が発揮されることが実験により
確かめられている。又、このような相対速度であると、
噴霧ゾーン８の長さＬは600mm以下にすることができ、
装置を小型化できる。The cooling speed increases as the flow speed of the spray droplets 7 in the spray zone 8 increases, but the relative speed to the running speed of the plated metal wire 1 is 3 m / sec or more, preferably 4.5 m / sec or more. It has been confirmed by experiments that an excellent cooling effect is exhibited. Also, with such a relative speed,
The length L of the spray zone 8 can be less than 600 mm,
The device can be downsized.
金属線１として外径0.5mmの銅線を使用し、これを70m
/分の速度でもって270〜280℃に加熱溶融された半田が
収容された溶融金属浴２中を通過させて垂直方向に引き
上げ、自然冷却後噴霧ゾーン８の長さ500mm、噴霧液滴
７の流動速度4.5m/秒（相対速度約5.7m/秒）の条件で冷
却してめっき金属線を製造した。このめっき金属線の表
面は均一であり又めっき層の偏肉も殆どなかった。Use a copper wire with an outer diameter of 0.5 mm as the metal wire 1
At a speed of 270-280 ° C. at a rate of 270-280 ° C., and passes vertically through the molten metal bath 2 containing the solder. Cooling was performed under the conditions of a flow velocity of 4.5 m / sec (a relative velocity of about 5.7 m / sec) to produce a plated metal wire. The surface of the plated metal wire was uniform and the thickness of the plated layer was hardly uneven.
比較のため、めっき金属線の冷却を長さ500mmの静止
噴霧液滴中で行なったところ、十分に冷却するためには
25m/分の製造速度が限度であった。For comparison, the cooling of the plated metal wire was performed in a 500 mm long static spray droplet.
Production speed was limited to 25m / min.
［発明の効果］ 以上説明してきた通り、本発明によれば、めっき表面
の凹凸や割れの発生及びめっき層の偏肉の発生を防止で
き、しかも、冷却装置の大型化を招くことなく高速度で
めっき金属線を製造することができるようになる。[Effects of the Invention] As described above, according to the present invention, it is possible to prevent the occurrence of unevenness and cracks on the plating surface and the occurrence of uneven thickness of the plating layer, and to increase the speed without increasing the size of the cooling device. Thus, a plated metal wire can be manufactured.
添付図面は本発明の一実施例の説明図である。 1:金属線、2:溶融金属浴、 3:線ガイド、4:冷却筒、 5:分岐管、6:噴霧ノズル、 7:噴霧液滴、8:噴霧ゾーン。 The attached drawings are explanatory diagrams of one embodiment of the present invention. 1: metal wire, 2: molten metal bath, 3: wire guide, 4: cooling cylinder, 5: branch pipe, 6: spray nozzle, 7: spray droplet, 8: spray zone.
Claims (3)
を施し、空気中で自然冷却した後溶融めっき金属線の進
行方向とは相対する方向に噴霧液滴が流動している噴霧
ゾーン内を通過させて冷却することを特徴とする金属線
溶融めっき方法。1. A spray zone in which a metal wire is passed through a molten metal bath to perform plating, is cooled naturally in air, and then spray droplets flow in a direction opposite to a traveling direction of the molten metal wire. A metal wire hot-dip plating method characterized by passing through the inside and cooling.
部付近に噴霧ノズルを配置し、この噴霧ノズルから噴霧
液滴を下方に向って噴出させることより噴霧ゾーンを形
成し、冷却筒の下方から上方にめっき金属線を走行させ
る請求項１記載の金属線溶融めっき方法。2. A spray nozzle is arranged near an upper end of a cooling cylinder installed perpendicular to the ground, and a spray zone is formed by ejecting spray droplets downward from the spray nozzle. The metal wire hot-dip plating method according to claim 1, wherein the plated metal wire is moved upward from below.
とめっき金属線の走行速度との相対速度は3m/秒以上で
ある請求項１記載の金属線溶融めっき方法。3. The metal wire hot dip coating method according to claim 1, wherein the relative speed between the flow speed of the spray droplets in the spray zone and the traveling speed of the plated metal wire is 3 m / sec or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1207548A JP2579820B2 (en) | 1989-08-10 | 1989-08-10 | Metal wire hot-dip plating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1207548A JP2579820B2 (en) | 1989-08-10 | 1989-08-10 | Metal wire hot-dip plating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0372061A JPH0372061A (en) | 1991-03-27 |
| JP2579820B2 true JP2579820B2 (en) | 1997-02-12 |
Family
ID=16541559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1207548A Expired - Fee Related JP2579820B2 (en) | 1989-08-10 | 1989-08-10 | Metal wire hot-dip plating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2579820B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1015409A3 (en) * | 2003-03-12 | 2005-03-01 | Ct Rech Metallurgiques Asbl | Checking the thickness of liquid layer on the surface of an object emerging stretch of bath. |
| JP4767739B2 (en) * | 2006-04-11 | 2011-09-07 | 新日本製鐵株式会社 | Method and apparatus for cooling hot dipped wire |
| JP2010095750A (en) * | 2008-10-15 | 2010-04-30 | Mitsubishi Cable Ind Ltd | Apparatus and method of plating wire, and plated wire |
| CN104060210B (en) * | 2014-07-02 | 2016-05-11 | 天津百瑞杰焊接材料有限公司 | With the bimodal temperature tin equipment of air-cooler |
-
1989
- 1989-08-10 JP JP1207548A patent/JP2579820B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0372061A (en) | 1991-03-27 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |