JP3238633B2 - Phosphor bronze alloy rectangular wire for straight spring having thin thickness and narrow width and method for producing the same - Google Patents
Phosphor bronze alloy rectangular wire for straight spring having thin thickness and narrow width and method for producing the sameInfo
- Publication number
- JP3238633B2 JP3238633B2 JP15889096A JP15889096A JP3238633B2 JP 3238633 B2 JP3238633 B2 JP 3238633B2 JP 15889096 A JP15889096 A JP 15889096A JP 15889096 A JP15889096 A JP 15889096A JP 3238633 B2 JP3238633 B2 JP 3238633B2
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- Prior art keywords
- wire
- bronze alloy
- phosphor bronze
- copper
- thickness
- 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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- Electroplating Methods And Accessories (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、真直ばね性に優れ良好
な耐久性とはんだ付け性を有する真直ばね用りん青銅合
金平角線とその製造方法に関するもので、特に省スペー
ス化の要求される光ピックアップ装置等に好適な極めて
薄くかつ幅狭の真直ばね用りん青銅合金平角線とその製
造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a phosphor bronze alloy flat wire for straight springs having excellent straight spring properties and good durability and solderability, and a method for producing the same. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extremely thin and narrow phosphor bronze alloy rectangular wire for a straight spring suitable for an optical pickup device and the like, and a method for producing the same.
【０００２】[0002]
【従来の技術】表５は、従来の真直ばね用りん青銅合金
平角線の製造方法の１例を示すフローチャートである。2. Description of the Related Art Table 5 is a flowchart showing one example of a conventional method for producing a phosphor bronze alloy flat wire for a straight spring.
【０００３】[0003]
【表５】 [Table 5]
【０００４】先ず第１工程の引抜き加工工程で、錫の平
均含有率が７〜９ｗｔ％に調整されたりん青銅合金材を
直径が例えば２００μｍのりん青銅合金丸線に伸線す
る。次に第２工程の圧延加工工程で、このりん青銅合金
丸線を二段圧延機を用いて圧下率３０％で例えば厚さが
１４０μｍで幅が２２０μｍのりん青銅合金平角線に圧
延する。次に第３工程の溶融めっき加工工程で、前記り
ん青銅合金平角線を表面清浄化液槽中に導入し表面の油
脂や汚れを除去した後、溶融錫めっき液又は溶融はんだ
めっき液槽中を通過させ絞り具で過剰の溶融めっき液を
除去し所要めっき厚さに調整する。次に第４工程の直線
矯正加工工程で、これまでの加工工程中に前記溶融めっ
きりん青銅合金平角線に蓄積された捩れやウエーブ等の
機械的潜在歪みを矯正ロールの組み合わされた直線矯正
機に通して矯正し、圧延方向に真直ばね性を有するりん
青銅合金平角線を得るものであった。First, in a first drawing step, a phosphor bronze alloy material having an average tin content adjusted to 7 to 9 wt% is drawn into a phosphor bronze alloy round wire having a diameter of, for example, 200 μm. Next, in a rolling step of a second step, the phosphor bronze alloy round wire is rolled into a phosphor bronze alloy flat wire having a rolling reduction of 30% and a thickness of, for example, 140 μm and a width of 220 μm using a two-stage rolling mill. Next, in the hot-dip plating step of the third step, the phosphor bronze alloy flat wire is introduced into a surface cleaning liquid tank to remove oils and dirt on the surface, and then the molten tin plating liquid or the molten solder plating liquid tank is discharged. Excess hot-dip plating solution is removed with a squeezing tool and adjusted to the required plating thickness. Next, in a straightening process of a fourth process, a straightening machine in which straightening rolls are combined with mechanical latent distortions such as twists and waves accumulated in the hot-dip phosphor bronze alloy rectangular wire during the previous working process. To obtain a phosphor bronze alloy rectangular wire having straight spring properties in the rolling direction.
【０００５】[0005]
【発明が解決しようとする課題】上記従来の真直ばね用
りん青銅合金平角線は、平角線の真直性を矯正ロールを
組み合わせた直線矯正機により付与するものであるの
で、厚さが８０μｍ以下で幅が１４０μｍ以下といった
小さな構造寸法の平角線に対しては矯正効果が乏しくな
り、１，０００ｍｍ以上の真直度（曲率半径）が要求さ
れるような真直ばね用途の平角線を安定して製造するこ
とは困難であった。更に、従来の真直ばね用りん青銅合
金平角線では表面処理に溶融めっき法を用いているの
で、過剰の溶融めっき液を除去する絞り具が用いられる
が、絞り具と平角線幅寸法との間にはクリアランスがあ
るため、このクリアランスから溶融めっき液がしみだ
し、殊に平角線の幅寸法が２００μｍ以下になると絞り
具では溶融めっき液を絞りきれなくなり、平角線厚み方
向のめっき厚さが不均一となったり、めっき表面に微細
な錫塊やはんだ塊が付着し表面荒れを発生するといった
品質上の欠陥やめっき欠陥によりめっき面に変質を生じ
信頼性が低下するという問題点があった。Since the straight wire of the conventional phosphor bronze alloy for straight springs is provided with straightness by a straightening machine in which a straightening roll is combined with a straight wire, the thickness of the flat wire is 80 μm or less. A straightening wire having a small structural dimension such as a width of 140 μm or less has a poor effect of straightening, and a flat wire for a straight spring application requiring a straightness (radius of curvature) of 1,000 mm or more is stably manufactured. It was difficult. Further, in the conventional flat wire for phosphor bronze alloy for straight springs, a hot-dip plating method is used for surface treatment, so a drawing tool for removing excess hot-dip plating solution is used. , The molten plating solution seeps out of this clearance, especially when the width of the flat wire becomes less than 200 μm, the squeeze tool can not squeeze the hot plating solution, and the plating thickness in the flat wire thickness direction is not good. There has been a problem that the plating surface is degraded due to quality defects or plating defects such as uniformity, fine tin lump or solder lump adhering to the plating surface and surface roughening, thereby lowering reliability.
【０００６】そこで、本発明の目的は、りん青銅のもつ
本来のばね特性を損なうことなく薄厚幅狭で良好な耐久
性とはんだ付け性を備え、１，０００ｍｍ以上の真直度
（曲率半径）を得られるようにした真直ばね用りん青銅
合金平角線およびその製造方法を提供することにある。Accordingly, an object of the present invention is to provide a thin and narrow, good durability and solderability without impairing the original spring characteristics of phosphor bronze, and a straightness (radius of curvature) of 1,000 mm or more. It is an object of the present invention to provide a phosphor bronze alloy flat wire for a straight spring and a method for producing the same.
【０００７】[0007]
【課題を解決するための手段】本発明の第１の観点で
は、厚さが８０μｍ以下で幅が１４０μｍ以下で錫の平
均含有率が７〜９ｗｔ％であるりん青銅合金平角線の外
周面に錫電解めっき膜又ははんだ電解めっき膜又は銅電
解めっき膜が形成され、１，０００ｍｍ以上の真直度を
有する薄厚幅狭な真直ばね用りん青銅合金平角線を提供
することにある。 According to a first aspect of the present invention, an outer peripheral surface of a flat phosphor bronze alloy wire having a thickness of 80 μm or less, a width of 140 μm or less, and an average tin content of 7 to 9 wt% is provided. An object of the present invention is to provide a thin and narrow phosphor bronze alloy rectangular wire for a straight spring having a straightness of 1,000 mm or more, on which a tin electrolytic plating film, a solder electrolytic plating film, or a copper electrolytic plating film is formed .
【０００８】[0008]
【０００９】本発明の第２の観点では、錫の平均含有率
が７〜９ｗｔ％のりん青銅合金材を所要線径のりん青銅
合金丸線まで引き落とす引抜き工程と、前記引抜き丸線
を厚さが８０μｍ以下で幅が１４０μｍ以下の平角線に
形成する圧延工程と、前記圧延平角線を真直化するため
の熱処理工程と、前記真直化平角線の外周面を清浄化す
る電解脱脂工程と、前記真直化平角線の外周面に０．０
５〜２．０μｍ厚さの錫めっき膜又ははんだめっき膜を
形成する電着工程とからなる薄厚幅狭な真直ばね用りん
青銅合金平角線の製造方法を提供することにある。 また
本発明の第３の観点では、前記第２観点の製造方法にお
いて、前記熱処理工程と前記電解脱脂工程と前記電着工
程とを連続工程とした薄厚幅狭な真直ばね用りん青銅合
金平角線の製造方法を提供することにある。 According to a second aspect of the present invention, there is provided a drawing step of drawing a phosphor bronze alloy material having an average tin content of 7 to 9 wt% to a phosphor bronze alloy round wire having a required wire diameter; Rolling step of forming a flat wire having a width of 80 μm or less and 140 μm or less, a heat treatment step for straightening the rolled flat wire, and an electrolytic degreasing step of cleaning an outer peripheral surface of the straightened flat wire, 0.0 on outer peripheral surface of straightened flat wire
It is an object of the present invention to provide a method for producing a thin and narrow phosphoric bronze alloy rectangular wire for a straight spring, which comprises an electrodeposition step of forming a tin plating film or a solder plating film having a thickness of 5 to 2.0 μm . Also
According to a third aspect of the present invention, in the manufacturing method according to the second aspect , a thin and narrow phosphor bronze for a straight spring is formed by continuously performing the heat treatment step, the electrolytic degreasing step, and the electrodeposition step.
An object of the present invention is to provide a method of manufacturing a gold rectangular wire.
【００１０】本発明の第４の観点では、錫の平均含有率
が７〜９ｗｔ％であるりん青銅合金材を所要線径のりん
青銅合金丸線まで引き落とす第１の引抜き工程と、前記
りん青銅合金丸線の外周面を清浄化する電解脱脂工程
と、前記りん青銅合金丸線の外周面に所要厚さの銅めっ
き膜を形成する電着工程と、前記銅電着丸線を所要線径
の銅電着丸線まで引き落とす第２の引抜き工程と、前記
銅電着丸線を厚さが８０μｍ以下で幅が１４０μｍ以下
でかつ銅電着膜厚さが０．０２〜１．０μｍの銅電着平
角線に形成する圧延工程と、前記銅電着平角線を真直化
するための熱処理工程とからなる薄厚幅狭な真直ばね用
りん青銅合金平角線の製造方法を提供することにある。According to a fourth aspect of the present invention, there is provided a first drawing step of drawing a phosphor bronze alloy material having an average tin content of 7 to 9 wt% to a phosphor bronze alloy round wire having a required wire diameter; An electrolytic degreasing step of cleaning the outer peripheral surface of the alloy round wire, an electrodeposition step of forming a copper plating film of a required thickness on the outer peripheral surface of the phosphor bronze alloy round wire, and a required wire diameter of the copper electrodeposited round wire. A copper wire having a thickness of not more than 80 μm, a width of not more than 140 μm, and a copper electrodeposited film thickness of 0.02 to 1.0 μm. An object of the present invention is to provide a method for producing a thin, narrow, and flat phosphor-bronze alloy flat wire for a straight spring, which comprises a rolling step of forming an electrodeposited flat wire and a heat treatment step for straightening the copper electrodeposited flat wire.
【００１１】[0011]
【作用】本発明の第１の観点の真直ばね用りん青銅合金
平角線では、錫の平均含有率が７〜９ｗｔ％であるりん
青銅合金平角線外周面を錫またははんだまたは銅の電着
めっき層で形成することにより、めっき厚さが均一でめ
っき表面が平滑な平角線となっり良好なはんだ付け性と
優れた耐久性が得られる。また、フラックスを用いたり
高温度でのはんだ付けを行う必要がなくなるので、りん
青銅合金平角線の真直ばね性を損なう恐れもなくなる。
また従来製造の困難であった厚さが８０μｍ以下で幅が
１４０μｍ以下の薄厚幅狭な平角線に形成されているの
で、上下左右の細かな高速の動作にも追従が可能とな
る。従って、真直ばねの小型設計が可能となり、真直ば
ねを用いた電子部品の小型化が図られ、真直ばねの用途
拡大が促進される。 [Action] In the first aspect of phosphor bronze alloy flat wire for straight spring of the present invention, the average content of tin is 7～9Wt% phosphorus bronze alloy flat wire outer peripheral surface electrodeposition of tin or solder or copper plating By forming a layer, a flat rectangular wire having a uniform plating thickness and a smooth plating surface is obtained, and good solderability and excellent durability are obtained. Further, since there is no need to use a flux or to perform soldering at a high temperature, there is no danger of impairing the straight spring property of the phosphor bronze alloy rectangular wire.
In addition, the thickness was less than 80 μm and the width was
It is formed into a thin rectangular wire with a thickness of 140 μm or less and a narrow width.
This makes it possible to follow fine high-speed movements up, down, left, and right.
You. Therefore, it is possible to design a straight spring with a small size.
Electronic components using springs are downsized, and straight springs are used
Expansion is promoted.
【００１２】[0012]
【００１３】本発明の第２の観点の真直ばね用りん青銅
合金平角線の製造方法では、厚さを８０μｍ以下、幅を
１４０μｍ以下に圧延加工したりん青銅合金平角線を加
熱炉中で張力を加えながら真直化矯正するものであるか
ら、厚さが８０μｍ以下で幅が１４０μｍ以下の薄厚幅
狭の平角線であっても均一な張力で均一に加熱されて蓄
積歪みが除去され十分な真直化処理を施すことができ
る。また、電着により錫めっきまたははんだめっき膜を
施すものであるので、厚さの均一な平滑な表面のめっき
を施すことができる。この結果、厚さを８０μｍ以下で
幅を１４０μｍ以下としたりん青銅合金平角線であって
も、１，０００ｍｍ以上の優れた真直度と良好なはんだ
付け性とを備えることが出来る。なお、電着による錫ま
たははんだのめっき厚さを０．０５〜２．０μｍに形成
するとしたのは、めっき厚さが２．０μｍを越えると真
直ばね性が低下し、めっき厚さが０．０５μｍより薄い
と十分なはんだ付け性が得られないためである。また本
発明の第３の観点の製造方法では、前記第２観点の製造
方法において、前記熱処理工程と前記電解脱脂工程と前
記電着工程とを連続工程とすれば製造工程の効率化が図
れるので望ましい。 In the method for manufacturing a flat wire of a phosphor bronze alloy for a straight spring according to a second aspect of the present invention, a flat wire of a phosphor bronze alloy rolled to a thickness of 80 μm or less and a width of 140 μm or less is subjected to tension in a heating furnace. Since it is straightening while adding, even a thin rectangular wire with a thickness of 80 μm or less and a width of 140 μm or less is heated evenly with uniform tension to remove accumulated distortion and sufficiently straighten. Processing can be performed. Further, since a tin plating or a solder plating film is applied by electrodeposition, it is possible to apply a plating having a uniform thickness and a smooth surface. As a result, even a phosphor bronze alloy rectangular wire having a thickness of 80 μm or less and a width of 140 μm or less can have excellent straightness of 1,000 mm or more and good solderability. The reason why the plating thickness of the tin or solder formed by electrodeposition is set to 0.05 to 2.0 μm is that if the plating thickness exceeds 2.0 μm, the straight spring property is reduced and the plating thickness is reduced to 0. If the thickness is less than 05 μm, sufficient solderability cannot be obtained. Also book
In the manufacturing method according to a third aspect of the present invention, the manufacturing method according to the second aspect is provided.
In the method, the heat treatment step, the electrolytic degreasing step, and the
If the electrodeposition process is a continuous process, the efficiency of the manufacturing process will increase.
Is desirable.
【００１４】本発明の第４観点の真直ばね用りん青銅合
金平角線の製造方法では、所要線径まで引き抜き加工し
たりん青銅合金丸線に電着により銅膜を形成した後、再
度の引き抜き加工と圧延加工を施し厚さが８０μｍ以下
で幅が１４０μｍ以下のりん青銅合金平角線とするが、
これは電着銅膜の施されたりん青銅合金線を引き抜き加
工と圧延加工することにより、ポーラスな電着銅膜表面
が緻密な表面状態となるとともに下地のりん青銅合金と
電着銅膜との密着性が向上しりん青銅合金平角線の表面
改質の効果を得ることができるからである。また、加熱
による真直化処理と電着による銅膜形成の作用は、上記
の本発明の第２観点の真直ばね用りん青銅合金平角線の
製造方法に述べたと同様である。この結果、厚さを８０
μｍ以下で幅を１４０μｍ以下とした薄厚幅狭なりん青
銅合金平角線であっても、真直度１，０００ｍｍ以上の
優れた真直ばね性と良好なはんだ付け性とが得られる。
なお、電着による銅めっき厚さを０．０２〜１．０μｍ
に形成するとしたのは、めっき厚さが１．０μｍを越え
ると真直ばね性が低下し、めっき厚さが０．０２μｍよ
り薄いと十分なはんだ付け性が得られないためである。In a method for manufacturing a phosphor bronze alloy flat wire for a straight spring according to a fourth aspect of the present invention, a copper film is formed by electrodeposition on a phosphor bronze alloy round wire drawn to a required wire diameter and then drawn again. And rolling processing to make a phosphor bronze alloy rectangular wire with a thickness of 80 μm or less and a width of 140 μm or less,
This is because the surface of the porous electrodeposited copper film becomes a dense surface state by drawing and rolling the phosphor bronze alloy wire coated with the electrodeposited copper film, and the underlying phosphor bronze alloy and electrodeposited copper film Is improved, and the effect of surface modification of the phosphor bronze alloy rectangular wire can be obtained. The effects of the straightening treatment by heating and the formation of the copper film by electrodeposition are the same as those described in the above-mentioned method for producing a phosphor bronze alloy flat wire for a straight spring according to the second aspect of the present invention. As a result, the thickness becomes 80
Even with a thin, narrow , thin bronze alloy rectangular wire having a width of 140 μm or less, excellent straightness with a straightness of 1,000 mm or more and good solderability can be obtained.
The thickness of the copper plating by electrodeposition is 0.02 to 1.0 μm.
The reason for this is that when the plating thickness exceeds 1.0 μm, the straight spring property decreases, and when the plating thickness is less than 0.02 μm, sufficient solderability cannot be obtained.
【００１５】[0015]
【実施例】以下、図に示す本発明の実施例に基づいて本
発明を更に詳細に説明する。なお、これにより本発明が
限定されるものではない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on embodiments of the present invention shown in the drawings. Note that the present invention is not limited by this.
【００１６】[0016]
【表１】 [Table 1]
【００１７】表１は、本発明の真直ばね用りん青銅合金
平角線の製造方法の第１の実施例を示すフローチャート
である。第１工程では、図１に示すように、錫の平均含
有率が７〜９ｗｔ％であるりん青銅合金母線Ｒ１を巻枠
１２Ａより繰り出し、伸線機１３にて、１伸線ダイス当
りの減面率を１３％に設定した複数個の伸線ダイス１４
により５００ｍ／ｍｉｎの速度で引き抜き加工し巻枠１
２Ｂに巻取り、外径０．０９９ｍｍの被圧延丸線Ｒ２と
した。なお、１５は伸線ロールである。第２工程では、
図２に示すように、巻枠１２Ｂより被圧延丸線Ｒ２を圧
延機１６へ導き、圧延ロール１７により圧下率３０％で
２５ｍ／ｍｉｎの速度で圧延し巻枠１２Ｃに巻取り、厚
さ０．０７０ｍｍ幅０．１２ｍｍの圧延平角線Ｒ３とし
た。第３工程、第４工程および第５工程は、図３に示す
ように、連続工程となっており、第３工程では、巻枠１
２Ｃより圧延平角線Ｒ３を炉温３５０°Ｃの真直化矯正
炉１８へ導入し、張力１００ｇｆで線速７ｍ／ｍｉｎに
て真直化処理を施し、図４に示すような真直平角線Ｒ４
とした。引き続いて第４工程では、真直平角線Ｒ４を電
解脱脂槽１９へ導き、液温２５°Ｃの非鉄系用ノーキレ
ート型電解脱脂液（キザイ（株）製マックスクリーンＢ
Ｇ−３２００の２％水溶液）中でＤＣ４Ｖの印加電圧で
表面に付着する油脂類を除去した後、５％硫酸溶液槽２
０中で中和し、水洗槽２１で水洗した。ついで第５工程
では、真直平角線Ｒ４を、電解めっき槽２２へ導入し、
真直平角線Ｒ４外周に厚さが１．０μｍの共晶はんだ電
解めっき薄膜を形成し、水洗槽２３を通し乾燥後巻枠１
２Ｄに巻き取り、図５に示すような共晶はんだ電解めっ
き薄膜２の施された真直ばね用りん青銅合金平角線１を
得た。共晶はんだ電解めっき処理は、公知のめっき液を
用い、公知の電解めっき条件で行った。例えば、めっき
液は、日本リロナール（株）製ソルダロンティンコンク
１８０ｍｌ／Ｌ；レッドコンク９６ｍｌ／Ｌ；アシッド
１２５ｍｌ／Ｌ；ＪＭ−１３０Ａ４０ｍｌ／Ｌ；ＪＭ−
１３０Ｃ４０ｍｌ／Ｌ；の混合浴を用い、浴温４０°
Ｃ、電流密度２３Ａ／ｄｍ2 、浸漬時間７秒である。な
お、２４は電解脱脂槽１９と電解めっき槽２２へ直流電
圧を供給する印加電極である。Table 1 is a flow chart showing a first embodiment of a method for producing a phosphor bronze alloy rectangular wire for a straight spring according to the present invention. In the first step, as shown in FIG. 1, a phosphor bronze alloy bus bar R1 having an average tin content of 7 to 9% by weight is drawn out from the winding frame 12A, and the wire drawing machine 13 reduces the per-drawing die. A plurality of wire dies 14 with the area ratio set to 13%
Is drawn at a speed of 500 m / min.
2B was wound to form a rolled round wire R2 having an outer diameter of 0.099 mm. In addition, 15 is a wire drawing roll. In the second step,
As shown in FIG. 2, the rolled round wire R2 is led from the bobbin 12B to the rolling mill 16, rolled by the rolling roll 17 at a reduction of 30% at a speed of 25 m / min, wound up on the bobbin 12C, and has a thickness of 0 mm. The rolled rectangular wire R3 having a width of 0.070 mm and a width of 0.12 mm was obtained. The third, fourth, and fifth steps are continuous steps as shown in FIG.
A flat wire R3 was introduced from 2C into a straightening furnace 18 at a furnace temperature of 350 ° C. and straightened at a linear speed of 7 m / min with a tension of 100 gf, thereby obtaining a straight wire R4 as shown in FIG.
And Subsequently, in the fourth step, the straight rectangular wire R4 is led to the electrolytic degreasing tank 19, and a non-ferrous non-chelate type electrolytic degreasing liquid for non-ferrous system at a liquid temperature of 25 ° C (MacScreen B manufactured by Kizai Co., Ltd.)
G-3200 in a 2% aqueous solution) to remove fats and oils adhering to the surface with an applied voltage of 4 V DC,
And then washed with water in a washing tank 21. Next, in the fifth step, a straight rectangular wire R4 is introduced into the electrolytic plating tank 22,
A eutectic solder electrolytic plating thin film having a thickness of 1.0 μm is formed on the outer periphery of the straight rectangular wire R4, passed through a washing tank 23, dried, and then wound.
It was rolled up in 2D, and a phosphor bronze alloy flat wire 1 for a straight spring having a eutectic solder electrolytic plating thin film 2 as shown in FIG. 5 was obtained. The eutectic solder electrolytic plating treatment was performed using a known plating solution under known electrolytic plating conditions. For example, the plating solution is 180 ml / L of Solderon Tin Conc manufactured by Nihon Rironal Co., Ltd .; 96 ml / L of Red Conc; 125 ml / L of Acid; JM-130A 40 ml / L; JM-
Using a mixed bath of 130C 40 ml / L; bath temperature 40 °
C, current density 23 A / dm 2 , immersion time 7 seconds. Reference numeral 24 denotes an application electrode for supplying a DC voltage to the electrolytic degreasing tank 19 and the electrolytic plating tank 22.
【００１８】また、上記第５工程における電解めっき槽
１８のめっき液に、ソルダロンティンコンク３００ｍｌ
／Ｌ；レッドコンク２４ｍｌ／Ｌ；アシッド２１０ｍｌ
／Ｌ；ＪＭ−１３０Ａ２０ｍｌ／Ｌ；ＪＭ−１３０Ｃ２
０ｍｌ／Ｌ；の混合浴を用い、浴温４０°Ｃ、電流密度
２３Ａ／ｄｍ2 、浸漬時間７秒で電解めっきを施すこと
により、厚さが１μｍの錫（Ｓｎ９７％残りＰｂ）電解
めっき薄膜の形成された真直ばね用りん青銅合金平角線
が得られる。The plating solution in the electrolytic plating tank 18 in the fifth step is added with 300 ml of solder-iron tink.
/ L; Red conch 24ml / L; Acid 210ml
/ L; JM-130A 20 ml / L; JM-130C2
Using a mixed bath of 0 ml / L; bath temperature of 40 ° C., current density of 23 A / dm 2 , and immersion time of 7 seconds, electroplating is performed to obtain a 1 μm thick tin (Sn97% remaining Pb) electroplated thin film The phosphor bronze alloy flat wire for straight springs having the above-mentioned is obtained.
【００１９】表２は、本発明の真直ばね用りん青銅合金
平角線の製造方法の第２の実施例を示すフローチャート
である。Table 2 is a flow chart showing a second embodiment of the method for producing a phosphor bronze alloy flat wire for a straight spring according to the present invention.
【００２０】[0020]
【表２】 [Table 2]
【００２１】第１工程では、図６に示すように、錫の平
均含有率が７〜９ｗｔ％であるりん青銅合金母線Ｒ３１
を巻枠３２Ａより繰り出し、伸線機３３にて、１伸線ダ
イス当りの減面率を１３％に設定した複数個の伸線ダイ
ス３４により５００ｍ／ｍｉｎの速度で引き抜き加工し
巻枠３２Ｂに巻取り、外径０．１３５ｍｍの丸線Ｒ３２
とした。なお、３５は伸線ロールである。第２工程およ
び第３工程は、図７に示すように連続工程となってお
り、第２工程では、巻枠３２Ｂより丸線Ｒ３２を電解脱
脂槽３６へ導き、液温３５°Ｃの非鉄系用ノーキレート
型電解脱脂液（キザイ（株）製マックスクリーンＢＧ−
３２００の２％水溶液）中でＤＣ４Ｖの印加電圧で表面
に付着する油脂類を除去した後、５％硫酸溶液槽３７中
で中和、水洗槽３８で水洗した。ついで第３工程では、
丸線Ｒ３２を長さ２．５ｍの電解めっき槽３９へ導入
し、硫酸銅２００ｇ／Ｌを含む電解液中（液温４０°
Ｃ）を１０ｍ／ｍｉｎの速度で走行させながら１．５Ａ
の定電流で厚さ１．０μｍの電着銅めっき薄膜を形成
し、水洗槽４０を通し乾燥後巻枠３２Ｃに巻き取り、図
１１に示すような電着銅めっき薄膜３の施された電着銅
丸線Ｒ３３とした。なお、４１は電解脱脂槽３６と電解
めっき槽３９へ直流電圧を供給する印加電極である。第
４工程では、図８に示すように、電着銅丸線Ｒ３３を第
２の伸線機４２で再び引き抜き加工し巻枠３２Ｄに巻取
り、外径０．０９２ｍｍの電着銅丸線Ｒ３４とした。こ
の時の電着銅めっき厚さをオージェ電子分光法で測定し
たところ０．０８０μｍであった。なお、４３は伸線ダ
イス、４４は伸線ロールである。第５工程では、図９に
示すように、電着銅丸線Ｒ３３を圧延機４５へ導き、圧
延ロール４６により圧下率２４％で２５ｍ／ｍｉｎの速
度で圧延し巻枠３２Ｅに巻取り、厚さ０．０７０ｍｍ幅
０．１０５ｍｍの電着銅平角線Ｒ３４とした。第６工程
では、図１０に示すように、巻枠３２Ｅより電着銅平角
線Ｒ３４を炉温３５０°Ｃの真直化矯正炉４７へ導入
し、張力１００ｇｆで線速７ｍ／ｍｉｎにて真直化処理
を施し、図１２に示すような電着銅めっき薄膜５の施さ
れた真直ばね用りん青銅合金平角線４を得た。In the first step, as shown in FIG. 6, a phosphor bronze alloy bus R31 having an average tin content of 7 to 9 wt% is used.
Is drawn out from the bobbin 32A, and is drawn out at a speed of 500 m / min by a plurality of drawing dies 34 in which a surface reduction rate per one drawing die is set to 13% by a drawing machine 33 to form a bobbin 32B. Winding, round wire R32 with outer diameter 0.135mm
And In addition, 35 is a drawing roll. As shown in FIG. 7, the second step and the third step are continuous steps. In the second step, the round wire R32 is led from the bobbin 32B to the electrolytic degreasing tank 36, and the non-ferrous liquid having a liquid temperature of 35 ° C. No chelate type electrolytic degreasing solution for use (Mac Screen BG- manufactured by Kizai Co., Ltd.)
After removing fats and oils adhering to the surface with an applied voltage of DC 4 V in a 3% 2% aqueous solution), the mixture was neutralized in a 5% sulfuric acid solution tank 37 and washed in a water washing tank 38. Then, in the third step,
The round wire R32 was introduced into the electrolytic plating tank 39 having a length of 2.5 m, and was placed in an electrolytic solution containing 200 g / L of copper sulfate (solution temperature 40 °).
1.5A while running C) at a speed of 10 m / min.
A 1.0 μm-thick electrodeposited copper-plated thin film was formed at a constant current, dried through a washing tank 40, wound on a reel 32 C, and provided with an electrodeposited copper-plated thin film 3 as shown in FIG. 11. The round copper wire R33 was used. Reference numeral 41 denotes an application electrode for supplying a DC voltage to the electrolytic degreasing tank 36 and the electrolytic plating tank 39. In the fourth step, as shown in FIG. 8, the electrodeposited copper round wire R33 is drawn again by the second wire drawing machine 42, wound around a winding frame 32D, and the electrodeposited copper round wire R34 having an outer diameter of 0.092 mm is formed. And The thickness of the electrodeposited copper plating at this time was measured by Auger electron spectroscopy and found to be 0.080 μm. In addition, 43 is a wire drawing die, and 44 is a wire drawing roll. In the fifth step, as shown in FIG. 9, the electrodeposited copper round wire R33 is guided to a rolling mill 45, rolled by a rolling roll 46 at a reduction of 24% at a speed of 25 m / min, and wound on a reel 32E. The electrodeposited copper rectangular wire R34 having a thickness of 0.070 mm and a width of 0.105 mm was used. In the sixth step, as shown in FIG. 10, an electrodeposited copper flat wire R34 is introduced into the straightening furnace 47 at a furnace temperature of 350 ° C. from the winding frame 32E, and straightened at a wire speed of 7 m / min at a tension of 100 gf. After the treatment, a phosphor bronze alloy flat wire 4 for a straight spring having an electrodeposited copper plating thin film 5 as shown in FIG. 12 was obtained.
【００２２】次に、上記第１実施例の共晶はんだ電解め
っき薄膜２の施された真直ばね用りん青銅合金平角線
１、錫電解めっき薄膜（Ｓｎ９７％残りＰｂ）の施され
た真直ばね用りん青銅合金平角線および第２実施例の電
着銅めっき薄膜５の施された真直ばね用りん青銅合金平
角線４と、従来例として共晶はんだ溶融めっきを施した
第１実施例と同寸法のりん青銅合金平角線について、メ
ニスコグラフ法によりはんだ付け性試験を行った。はん
だ浴は、組成が６０％Ｓｎ−４０％Ｐｂ、浴温が２６０
°Ｃとした。その結果を表３に示す。表３から判るよう
に、本発明のりん青銅合金平角線ははんだ濡れ性に極め
て優れる。Next, the phosphor bronze alloy flat wire 1 for the straight spring provided with the eutectic solder electrolytic plating thin film 2 of the first embodiment, and the straight spring for the straight spring provided with the tin electrolytic plating thin film (Sn 97% remaining Pb). Phosphor bronze alloy rectangular wire 4 for straight springs coated with electrodeposited copper plated thin film 5 of the second embodiment, and the same dimensions as the first embodiment in which eutectic solder hot-dip plating is performed as a conventional example The phosphoric bronze alloy rectangular wire was subjected to a solderability test by a meniscograph method. The solder bath has a composition of 60% Sn-40% Pb and a bath temperature of 260%.
° C. Table 3 shows the results. As can be seen from Table 3, the phosphor bronze alloy rectangular wire of the present invention is extremely excellent in solder wettability.
【００２３】[0023]
【表３】 [Table 3]
【００２４】また、上記本発明のりん青銅合金平角線の
各試料と比較例としてめっきを施さないりん青銅合金平
角線について、機械的特性を測定した。その測定結果を
表４に示す。なお、比較例のりん青銅合金平角線は第１
実施例のめっきを施す前の裸平角線と材質、構造寸法を
同一にした。The mechanical properties of each of the phosphor bronze alloy rectangular wires of the present invention and the phosphor-bronze alloy rectangular wires without plating were measured as comparative examples. Table 4 shows the measurement results. The phosphor bronze alloy flat wire of the comparative example is the first wire.
The material and the structural dimensions were the same as those of the bare rectangular wire before plating in the example.
【００２５】[0025]
【表４】 [Table 4]
【００２６】表４から判るように、本発明のりん青銅合
金平角線は電解めっき薄膜を施してもめっきを施さない
りん青銅合金平角線と遜色のないヤング率を示し、真直
ばね性を損なうことがない。As can be seen from Table 4, the phosphor bronze alloy flat wire of the present invention shows a Young's modulus comparable to that of a phosphor bronze alloy flat wire which is not plated even when an electrolytic plating thin film is applied, and impairs straight springability. There is no.
【００２７】[0027]
【発明の効果】本発明の真直ばね用りん青銅合金平角線
は、従来製造の困難であった厚さが８０μｍ以下で幅が
１４０μｍ以下の薄厚幅狭の平角線でしかもめっき厚さ
が均一でめっき表面が平滑な平角線を得ることができ
る。従って、真直ばね材として、りん青銅合金の真直ば
ね性を維持したままで良好なはんだ付け性を改善でき、
またばね特性の劣化の心配がなくなる。更に、従来のも
のに比べ上下左右の細かな高速の動作に追従が可能とな
るので、真直ばねの小型設計が可能となり、真直ばねを
用いた電子部品の小型化が図られ、真直ばね材としての
用途拡大が促進される。The flat wire of the phosphor bronze alloy for straight springs of the present invention is a thin flat wire having a thickness of 80 μm or less and a width of 140 μm or less, which has been difficult to manufacture conventionally, and has a uniform plating thickness. A flat rectangular wire with a smooth plating surface can be obtained. Therefore, as a straight spring material, good solderability can be improved while maintaining the straight spring property of the phosphor bronze alloy,
Also, there is no need to worry about deterioration of the spring characteristics. Furthermore, since it is possible to follow a fine, high-speed operation of up, down, left, and right as compared with conventional ones, it is possible to design a straight spring in a small size, and it is possible to downsize electronic components using the straight spring, and as a straight spring material. The use expansion of is promoted.
【図１】第１の実施例の引き抜き工程図である。FIG. 1 is a drawing process drawing of a first embodiment.
【図２】第１の実施例の圧延工程図である。FIG. 2 is a rolling process diagram of the first embodiment.
【図３】第１の実施例の熱処理工程と電解脱脂工程と電
着めっき工程の連続工程図である。FIG. 3 is a continuous process diagram of a heat treatment step, an electrolytic degreasing step, and an electrodeposition plating step of the first embodiment.
【図４】第１の実施例の圧延工程後の真直平角線の断面
図である。FIG. 4 is a cross-sectional view of a straight rectangular wire after a rolling process according to the first embodiment.
【図５】第１の実施例にかかる電解はんだめっきを施し
た真直ばね用りん青銅合金平角線の断面図である。FIG. 5 is a cross-sectional view of a flat wire of a phosphor bronze alloy for straight springs on which electrolytic solder plating has been applied according to the first embodiment.
【図６】第２の実施例の第１引き抜き工程図である。FIG. 6 is a first drawing step diagram of the second embodiment.
【図７】第２の実施例の電解脱脂工程と電着めっき工程
の連続工程図である。FIG. 7 is a continuous process diagram of an electrolytic degreasing process and an electrodeposition plating process of the second embodiment.
【図８】第２の実施例の第２引き抜き工程図である。FIG. 8 is a second drawing step diagram of the second embodiment.
【図９】第２の実施例の圧延工程図である。FIG. 9 is a rolling process chart of the second embodiment.
【図１０】第２の実施例の熱処理工程である。FIG. 10 shows a heat treatment step of the second embodiment.
【図１１】第２の実施例の電着めっき工程後の電着めっ
き丸線の断面図である。FIG. 11 is a cross-sectional view of the electrodeposited round wire after the electrodeposition plating step of the second embodiment.
【図１２】第２の実施例にかかる電解銅めっきを施した
真直ばね用りん青銅合金平角線の断面図である。FIG. 12 is a cross-sectional view of a phosphor bronze alloy rectangular wire for a straight spring plated with electrolytic copper according to the second embodiment.
１，４ 真直ばね用りん青銅合金平角線 ２，３，５ 電解めっき層 １３，３３，４２ 伸線機 １４，３４，４３ 伸線ダイス １６，４５ 圧延機 １７，４６ 圧延ロール １８，４７ 熱処理炉 １９，３６ 電解脱脂槽 ２２，３９ 電解めっき槽 1,4 Phosphor bronze alloy flat wire for straight springs 2,3,5 Electroplating layer 13,33,42 Wire drawing machine 14,34,43 Wire drawing die 16,45 Rolling machine 17,46 Rolling roll 18,47 Heat treatment furnace 19,36 electrolytic degreasing tank 22,39 electrolytic plating tank
フロントページの続き (56)参考文献 特開 平７−11460（ＪＰ，Ａ) 特開 平７−6636（ＪＰ，Ａ) 特開 平４−214896（ＪＰ，Ａ) 特開 平２−133129（ＪＰ，Ａ) 特開 平４−313440（ＪＰ，Ａ) 特開 平５−311280（ＪＰ，Ａ) 特開 平１−165792（ＪＰ，Ａ) 特開 昭57−203792（ＪＰ，Ａ) 特開 平６−2049（ＪＰ，Ａ) 特開 昭63−107054（ＪＰ，Ａ) 特開 昭49−53557（ＪＰ，Ａ) 特表 平８−509167（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C25D 7/06 C25D 7/00 Continuation of the front page (56) References JP-A-7-11460 (JP, A) JP-A-7-6636 (JP, A) JP-A-4-214896 (JP, A) JP-A-2-133129 (JP) JP-A-4-313440 (JP, A) JP-A-5-311280 (JP, A) JP-A-1-165792 (JP, A) JP-A-57-203792 (JP, A) 6-2049 (JP, A) JP-A-63-107054 (JP, A) JP-A-49-53557 (JP, A) JP-A-8-509167 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C25D 7/06 C25D 7/00
Claims (4)
下で錫の平均含有率が７〜９ｗｔ％であるりん青銅合金
平角線の外周面に錫電解めっき膜又ははんだ電解めっき
膜又は銅電解めっき膜が形成され、１，０００ｍｍ以上
の真直度を有することを特徴とする薄厚幅狭な真直ばね
用りん青銅合金平角線。1. A thickness of 80 μm or less and a width of 140 μm or less.
A tin electrolytic plating film, a solder electrolytic plating film, or a copper electrolytic plating film is formed on an outer peripheral surface of a phosphor bronze alloy rectangular wire having an average tin content of 7 to 9 wt% below, and has a straightness of 1,000 mm or more. Phosphor bronze alloy rectangular wire for straight springs having a small thickness and a narrow width .
銅合金材を所要線径のりん青銅合金丸線まで引き落とす
引抜き工程と、前記引抜き丸線を厚さが８０μｍ以下で
幅が１４０μｍ以下の平角線に形成する圧延工程と、前
記圧延平角線を真直化するための熱処理工程と、前記真
直化平角線の外周面を清浄化する電解脱脂工程と、前記
真直化平角線の外周面に０．０５〜２．０μｍ厚さの錫
めっき膜又ははんだめっき膜を形成する電着工程とから
なることを特徴とする薄厚幅狭な真直ばね用りん青銅合
金平角線の製造方法。 2. A phosphor blue having an average tin content of 7 to 9% by weight.
Drop copper alloy material to phosphor bronze alloy round wire of required wire diameter
The drawing step and the drawing round wire having a thickness of 80 μm or less
A rolling process for forming a flat wire having a width of 140 μm or less;
A heat treatment step for straightening the rolled flat wire;
An electrolytic degreasing step for cleaning the outer peripheral surface of the straightened rectangular wire;
0.05 to 2.0 μm thick tin on the outer peripheral surface of the straightened rectangular wire
From the electrodeposition process to form a plating film or solder plating film
Thin and narrow phosphor bronze alloy for straight springs
Manufacturing method of gold flat wire.
記電着工程とを連続工程としたことを特徴とする請求項
２記載の薄厚幅狭な真直ばね用りん青銅合金平角線の製
造方法。3. The method according to claim 1, wherein the heat treatment step, the electrolytic degreasing step, and
The electrodeposition process and the continuous process are characterized by the above-mentioned,
2. Thin and narrow phosphor bronze alloy rectangular wires for straight springs as described in 2 .
Construction method .
ん青銅合金材を所要線径のりん青銅合金丸線まで引き落
とす第１の引抜き工程と、前記りん青銅合金丸線の外周
面を清浄化する電解脱脂工程と、前記りん青銅合金丸線
の外周面に所要厚さの銅めっき膜を形成する電着工程
と、前記銅電着丸線を所要線径の銅電着丸線まで引き落
とす第２の引抜き工程と、前記銅電着丸線を厚さが８０
μｍ以下で幅が１４０μｍ以下でかつ銅電着膜厚さが
０．０２〜１．０μｍの銅電着平角線に形成する圧延工
程と、前記銅電着平角線を真直化するための熱処理工程
と、からなることを特徴とする薄厚幅狭な真直ばね用り
ん青銅合金平角線の製造方法。 4. An average tin content of 7 to 9 wt%.
Bronze alloy material is drawn down to a phosphor bronze alloy round wire of the required wire diameter
A first drawing step, and an outer periphery of the phosphor bronze alloy round wire
Electrolytic degreasing process for cleaning the surface, and the phosphor bronze alloy round wire
Electrodeposition process to form copper plating film of required thickness on outer peripheral surface
And the copper electrodeposited round wire is drawn down to the copper electrodeposited round wire of the required wire diameter.
A second drawing step, and the copper electrodeposited round wire having a thickness of 80 mm.
μm or less, the width is 140 μm or less, and the copper electrodeposition film thickness is
Roller for forming copper electrodeposited rectangular wire of 0.02 to 1.0 μm
And a heat treatment step for straightening the copper electrodeposited rectangular wire.
And a thin and narrow straight spring for a spring.
Manufacturing method of copper bronze alloy flat wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15889096A JP3238633B2 (en) | 1996-05-30 | 1996-05-30 | Phosphor bronze alloy rectangular wire for straight spring having thin thickness and narrow width and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15889096A JP3238633B2 (en) | 1996-05-30 | 1996-05-30 | Phosphor bronze alloy rectangular wire for straight spring having thin thickness and narrow width and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09316688A JPH09316688A (en) | 1997-12-09 |
| JP3238633B2 true JP3238633B2 (en) | 2001-12-17 |
Family
ID=15681625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15889096A Expired - Lifetime JP3238633B2 (en) | 1996-05-30 | 1996-05-30 | Phosphor bronze alloy rectangular wire for straight spring having thin thickness and narrow width and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3238633B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012177395A (en) * | 2011-02-25 | 2012-09-13 | Hino Motors Ltd | Gasket |
-
1996
- 1996-05-30 JP JP15889096A patent/JP3238633B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09316688A (en) | 1997-12-09 |
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