JPH1129895A - Surface treatment method for internal surface of coil-shaped long size pipe - Google Patents

Surface treatment method for internal surface of coil-shaped long size pipe

Info

Publication number
JPH1129895A
JPH1129895A JP18845197A JP18845197A JPH1129895A JP H1129895 A JPH1129895 A JP H1129895A JP 18845197 A JP18845197 A JP 18845197A JP 18845197 A JP18845197 A JP 18845197A JP H1129895 A JPH1129895 A JP H1129895A
Authority
JP
Japan
Prior art keywords
electrode wire
long tube
coiled
tube
coiled long
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.)
Pending
Application number
JP18845197A
Other languages
Japanese (ja)
Inventor
Toshinori Ozaki
敏範 尾崎
Muneo Kodaira
宗男 小平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP18845197A priority Critical patent/JPH1129895A/en
Publication of JPH1129895A publication Critical patent/JPH1129895A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a surface treatment method for the internal surface of a coil-shaped long size pipe in which the film thickness distribution and film quality of a plated film in the longitudinal direction and circumferential direction of the internal surface of the coil-shaped long size pipe are uniform. SOLUTION: This method is executed by injecting and hermetically sealing a long size pipe-surface treatment liq. or electroplating liq. into the coil-shaped long size pipe 1, and simultaneously, inserting an electrode wire 4 into the coil-shaped long size pipe 1 and allowing the electric current to flow between the electrode wire 4 and the coil-shaped long size pipe 1 to carry out the surface treatment such as the plating and washing on the internal surface of the coil- shaped long size pipe 1. In such a case, the surface treatment is executed by allowing the electric current to flow while coating the surface section with a prescribed interval, positioning a bent and coated electrode wire 12 in the center of the coil-shaped long size pipe 1, and simultaneously, moving the coated electrode wire 12 within the coil-shaped long size pipe 1.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、コイル状長尺管内
面の表面処理方法に係り、特に、給湯水用配管、水道水
用配管、光ファイバ用細管などのコイル状長尺管内面の
表面処理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 method for treating the inner surface of a coiled long tube, and more particularly, to the surface of the inner surface of a coiled long tube such as hot water supply pipe, tap water pipe, and optical fiber thin tube. It relates to a processing method.

【0002】[0002]

【従来の技術】従来の長尺管内面の表面処理方法とし
て、直管状の熱交換器用伝熱管内部に、メッキ液を注入
すると共に陽極棒を挿入し、その陽極棒を静止した状態
で電気銅メッキを行う方法(特開昭62−247098
号公報)、直管状の管内部に挿入される電極線の表面
に、絶縁スペーサを部分的または間欠的に、かつ、スパ
イラル状に巻き付けることで、電極線と管との間の短絡
を防止すると共に、陽極棒を静止した状態で電気メッキ
を行う方法(特開昭55−38949号公報)、直管状
の管内面のメッキに際し、管内に挿入した陽極棒の両端
特定部分をシールすることで、メッキ膜厚さを均一にす
る方法(特開昭55−38970号公報)などが挙げら
れる。
2. Description of the Related Art As a conventional surface treatment method for an inner surface of a long tube, a plating solution is injected and an anode rod is inserted into a heat transfer tube for a heat exchanger of a straight tube. Plating method (JP-A-62-247098)
Publication), an insulating spacer is partially or intermittently and spirally wound around the surface of an electrode wire inserted into a straight tube, thereby preventing a short circuit between the electrode wire and the tube. At the same time, a method of performing electroplating while the anode rod is stationary (Japanese Patent Application Laid-Open No. 55-38949), by sealing specific portions at both ends of the anode rod inserted into the tube when plating the inner surface of a straight tubular tube, A method of making the plating film thickness uniform (Japanese Patent Application Laid-Open No. 55-38970) is exemplified.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、メッキ
液を注入した管内に、部分的に被覆した電極線を無配慮
に挿入すると共に、単に、固定(静止)した状態で通電
を行うだけでは、被メッキ材である管の電流密度分布が
極めて不均一になると共に、管の長手方向および円周方
向のメッキ膜の膜厚分布・膜質も不均一となり、実用的
なメッキ膜質が得られない。
However, it is difficult to insert a partially covered electrode wire into a tube into which a plating solution has been injected without care and simply to conduct electricity in a fixed (stationary) state. The current density distribution of the tube as a plating material becomes extremely non-uniform, and the film thickness distribution and film quality of the plating film in the longitudinal direction and circumferential direction of the tube also become non-uniform, so that a practical plating film quality cannot be obtained.

【0004】すなわち、単に、電極線を管内に挿入する
だけでは、入口側の電極線より出口側の電極線の方がオ
ーム抵抗に基づいて電圧が低下し、電極線の入口側にお
ける管内面のメッキ膜の膜厚が厚くなり、電極線の出口
側における管内面のメッキ膜の膜厚が薄くなると共に、
膜質も様々に変化する。同様に、電極線が管の内径中心
に位置していない場合は、管内面のメッキ膜における円
周方向の膜厚分布や膜質が不均一になる。
[0004] That is, if the electrode wire is simply inserted into the tube, the voltage of the electrode wire on the outlet side is lower than the electrode wire on the inlet side based on the ohmic resistance. As the thickness of the plating film increases, the thickness of the plating film on the inner surface of the tube at the outlet side of the electrode wire decreases,
The film quality also changes in various ways. Similarly, when the electrode wire is not located at the center of the inner diameter of the tube, the circumferential thickness distribution and film quality of the plating film on the inner surface of the tube become uneven.

【0005】そこで本発明は、上記課題を解決し、コイ
ル状長尺管内面の長手方向および円周方向のメッキ膜の
膜厚分布・膜質が均一なコイル状長尺管内面の表面処理
方法を提供することにある。
The present invention solves the above-mentioned problems and provides a surface treatment method for the inner surface of a coiled long tube in which the film thickness distribution and film quality of the plating film in the longitudinal direction and the circumferential direction of the inner surface of the coiled long tube are uniform. To provide.

【0006】[0006]

【課題を解決するための手段】上記課題を解決するため
に請求項1の発明は、コイル状長尺管内部に長尺管表面
処理液或いは電気メッキ液を注入・密閉すると共に、そ
のコイル状長尺管内部に電極線を挿通し、その電極線と
コイル状長尺管との間に通電を行ってコイル状長尺管内
面に洗浄やメッキなどの表面処理を行う方法において、
表面部が所定の間隔を有して被覆され、かつ、湾曲した
被覆電極線を上記コイル状長尺管の内径中心に位置させ
ると共に、その被覆電極線をコイル状長尺管内を移動さ
せながら通電を行って表面処理を行うものである。
In order to solve the above-mentioned problems, the invention according to claim 1 is to fill and seal a long tube surface treatment solution or an electroplating solution into a coiled long tube and to seal the coiled long tube. In a method in which an electrode wire is inserted through the inside of the long tube, and a current is applied between the electrode wire and the coiled long tube to perform a surface treatment such as washing or plating on the inner surface of the coiled long tube.
The surface portion is coated with a predetermined interval, and the curved coated electrode wire is positioned at the center of the inner diameter of the coiled long tube, and the coated electrode wire is energized while moving in the coiled long tube. To perform a surface treatment.

【0007】請求項2の発明は、上記被覆電極線が、上
記コイル状長尺管内を連続的に移動する請求項1記載の
コイル状長尺管内面の表面処理方法である。
A second aspect of the present invention is the surface treatment method for the inner surface of the coiled long tube according to the first aspect, wherein the coated electrode wire continuously moves in the coiled long tube.

【0008】請求項3の発明は、電極線露出部の長手方
向総延長が、メッキ膜厚に正比例または上記被覆電極線
の移動速度に反比例するものである請求項1記載のコイ
ル状長尺管内面の表面処理方法である。
According to a third aspect of the present invention, in the coiled long tube according to the first aspect, a total lengthwise extension of the exposed portion of the electrode wire is directly proportional to a plating film thickness or inversely proportional to a moving speed of the coated electrode wire. This is the surface treatment method for the surface.

【0009】請求項4の発明は、上記被覆電極線が上記
コイル状長尺管の内径中心に位置すべく、電極線被覆部
の一部がコイル状長尺管の内径と略同径の鍔部となって
いる請求項1記載のコイル状長尺管内面の表面処理方法
である。
According to a fourth aspect of the present invention, a part of the electrode wire covering portion has a flange having substantially the same diameter as the inner diameter of the coiled long tube so that the coated electrode wire is located at the center of the inner diameter of the coiled long tube. The surface treatment method for an inner surface of a coiled long tube according to claim 1, which is a part.

【0010】請求項5の発明は、上記被覆電極線が上記
コイル状長尺管内を移動すべく、その被覆電極線の先端
部が、巻取り手段を備えた牽引用線材と接続されている
請求項1又は請求項4記載のコイル状長尺管内面の表面
処理方法である。
According to a fifth aspect of the present invention, in order for the covered electrode wire to move in the long coiled tube, the tip of the covered electrode wire is connected to a towed wire having winding means. A surface treatment method for the inner surface of a coiled long tube according to claim 1 or 4.

【0011】請求項6の発明は、上記被覆電極線が上記
コイル状長尺管内を移動すべく、その被覆電極線の先端
部に設けられたコイル状長尺管の内径と略同径の移動体
に、上記コイル状長尺管外部から流体力を付与する請求
項1又は請求項4記載のコイル状長尺管内面の表面処理
方法である。
According to a sixth aspect of the present invention, in order for the covered electrode wire to move within the coiled long tube, the coiled wire having a diameter substantially equal to the inner diameter of the coiled long tube provided at the distal end of the covered electrode wire. The surface treatment method for an inner surface of a coiled long tube according to claim 1 or 4, wherein a fluid force is applied to the body from outside the coiled long tube.

【0012】請求項7の発明は、上記コイル状長尺管内
に脱脂液を注入・密閉すると共に、そのコイル状長尺管
側を陰極とする通電、コイル状長尺管内に溶解洗浄液を
注入・密閉すると共に、そのコイル状長尺管側を陽極と
する通電、およびコイル状長尺管内に電気メッキ液を注
入・密閉すると共に、そのコイル状長尺管側を陰極とす
る通電のいずれか、又はそれらを組み合わせて行うもの
である請求項1記載のコイル状長尺管内面の表面処理方
法である。
According to a seventh aspect of the present invention, a degreasing solution is injected and sealed in the coiled elongated tube, and a current is supplied to the coiled elongated tube as a cathode, and a dissolved cleaning liquid is injected into the coiled elongated tube. Either sealing, energizing the coiled long tube side as an anode, or injecting and sealing an electroplating solution into the coiled long tube, and energizing the coiled long tube side as a cathode, The method for treating the inner surface of a coiled long tube according to claim 1, wherein the method is carried out by combining them.

【0013】請求項8の発明は、上記脱脂液がアルカリ
脱脂液、上記溶解洗浄液が硫酸液、上記電気メッキ液が
電気Snメッキ液である請求項7記載のコイル状長尺管
内面の表面処理方法である。
The invention according to claim 8 is the surface treatment of the inner surface of the coiled long tube according to claim 7, wherein the degreasing solution is an alkali degreasing solution, the dissolving and cleaning solution is a sulfuric acid solution, and the electroplating solution is an electric Sn plating solution. Is the way.

【0014】以上の構成によれば、コイル状長尺管内部
に長尺管表面処理液或いは電気メッキ液を注入・密閉す
ると共に、そのコイル状長尺管内部に電極線を挿通し、
その電極線とコイル状長尺管との間に通電を行ってコイ
ル状長尺管内面に洗浄やメッキなどの表面処理を行う方
法において、表面部が所定の間隔を有して被覆され、か
つ、湾曲した被覆電極線を上記コイル状長尺管の中心に
位置させると共に、その被覆電極線をコイル状長尺管内
を移動させながら通電を行って表面処理を行うため、コ
イル状長尺管内面の長手方向および円周方向のメッキ膜
の膜厚分布・膜質が均一となる。
According to the above construction, the surface treatment liquid or the electroplating solution is injected and sealed in the coiled long tube, and the electrode wire is inserted through the coiled long tube.
In a method of conducting a surface treatment such as washing or plating on the inner surface of the coiled long tube by conducting electricity between the electrode wire and the coiled long tube, the surface portion is coated with a predetermined interval, and In order to perform the surface treatment by energizing while moving the covered electrode wire at the center of the coiled long tube while moving the covered electrode wire in the coiled long tube, the inner surface of the coiled long tube is used. The film thickness distribution and film quality of the plating film in the longitudinal direction and the circumferential direction are uniform.

【0015】[0015]

【発明の実施の形態】以下、本発明の実施の形態を説明
する。
Embodiments of the present invention will be described below.

【0016】本発明者らは、基本的に医療器具として知
られるバルーン付カテーテルの機能を参考にすると共
に、メッキ器具に必要な独自の機能を新しく付与して、
コイル状長尺管内面の表面処理方法を見出した。
The present inventors refer to the function of a catheter with a balloon, which is basically known as a medical device, and newly add a unique function necessary for a plating device,
A surface treatment method for the inner surface of a coiled long tube was found.

【0017】すなわち、コイル状長尺管内面の表面処理
方法として、以下に挙げる条件を満足するものとする。
That is, the surface treatment method for the inner surface of the coiled long tube satisfies the following conditions.

【0018】(a) コイル状長尺管内面をメッキする
ことができる。
(A) The inner surface of the coiled long tube can be plated.

【0019】(b) 緻密なメッキ膜を得ることができ
る。
(B) A dense plating film can be obtained.

【0020】(c) コイル状長尺管長手方向における
メッキ膜の膜厚および膜質を均質にすることができる。
(C) The thickness and quality of the plating film in the longitudinal direction of the coiled long tube can be made uniform.

【0021】(d) コイル状長尺管円周方向における
メッキ膜の膜厚および膜質を均質にすることができる。
(D) The thickness and quality of the plating film in the circumferential direction of the coiled long tube can be made uniform.

【0022】(e) コイル状長尺管の内部を湾曲した
電極線が移動することができる。
(E) A curved electrode wire can move inside the coiled long tube.

【0023】また、コイル状長尺管内面と密着性が良好
で、かつ、緻密なメッキ膜を得るには、メッキ前処理と
して脱脂や酸洗浄が必要であるが、閉じられた空間であ
るコイル状長尺管内部は、比液量が小さく、液の対流、
流動、および交換も生じにくいため、これらのメッキ前
処理が有効に作用しにくい。
Further, in order to obtain a dense plating film having good adhesion to the inner surface of the coiled long tube, degreasing or acid cleaning is required as a pretreatment for plating. Inside the long tube, the specific liquid volume is small, the convection of the liquid,
Since the flow and the exchange hardly occur, these pretreatments for plating are hardly effective.

【0024】本発明者らは、それらのメッキ前処理と上
述した条件を満足するメッキ処理とを組み合わせて適用
することで、良好なメッキ膜を得ることができるという
ことを見出した。
The present inventors have found that a good plating film can be obtained by applying a combination of the pretreatment for plating and the plating treatment satisfying the above conditions.

【0025】本発明のコイル状長尺管内面の表面処理方
法に用いる装置の模式図を図1に示す。
FIG. 1 is a schematic view of an apparatus used for the surface treatment method for the inner surface of the coiled long tube of the present invention.

【0026】図1に示すように、本発明のコイル状長尺
管内面の表面処理方法に用いる装置は、管部と、陽電極
線12と、牽引線8を巻取るための牽引線巻取装置9
と、電源供給手段とからなるものである。
As shown in FIG. 1, the apparatus used for the surface treatment method for the inner surface of the coiled long tube according to the present invention comprises a tube, a positive electrode wire 12 and a pulling wire winding wire for winding the pulling wire 8. Device 9
And power supply means.

【0027】管部は、コイル状長尺管1と、そのコイル
状長尺管1の両端に設けられるメッキ液シール材2a,
2bとからなるものである。
The tube portion includes a coiled long tube 1 and plating solution sealing materials 2 a, provided at both ends of the coiled long tube 1.
2b.

【0028】陽電極線12は、湾曲した電極線4の表面
部に所定の間隔を有して被覆材5を形成してなるもので
あり、その陽電極線12の先端部に、牽引線(牽引用線
材)8が接続されている。
The positive electrode wire 12 is formed by forming a coating material 5 at a predetermined interval on the surface of the curved electrode wire 4, and a leading wire ( A towing wire 8 is connected.

【0029】ここで、陽電極線12の先端部には、等間
隔で所定の長さを有した電極線露出部6が複数個(図中
では6個)形成されており、電極線露出部6の表面には
不溶性金属であるPt、Ti、Snなどのメッキが施さ
れている。また、陽電極線12がコイル状長尺管1の内
径中心に位置すべく、陽電極線12における被覆材2の
一部に、コイル状長尺管1の内径と略同径のサポーター
(鍔部)7が設けられており、このサポーター7とコイ
ル状長尺管1の内面はルーズに接触している。
At the tip of the positive electrode wire 12, a plurality (six in the figure) of electrode wire exposed portions 6 having a predetermined length are formed at equal intervals. The surface of No. 6 is plated with an insoluble metal such as Pt, Ti, and Sn. In order to position the positive electrode wire 12 at the center of the inner diameter of the coiled long tube 1, a supporter (flange) having substantially the same diameter as the inner diameter of the coiled long tube 1 is provided on a part of the coating material 2 on the positive electrode wire 12. The supporter 7 and the inner surface of the coiled long tube 1 are in loose contact with each other.

【0030】電源供給手段は、電気メッキを行うための
メッキ電源10と、メッキ電源10に接続されるリード
線11からなるものである。リード線11aは、メッキ
電源10のマイナス側に接続されると共に、コイル状長
尺管1と接続されており、リード線11bは、メッキ電
源10のプラス側に接続されると共に、電極線4の後端
部と接続されている。
The power supply means comprises a plating power supply 10 for performing electroplating and a lead wire 11 connected to the plating power supply 10. The lead wire 11a is connected to the negative side of the plating power supply 10 and connected to the coiled long tube 1, and the lead wire 11b is connected to the positive side of the plating power supply 10 and Connected to the rear end.

【0031】次に、本発明のコイル状長尺管内面の表面
処理方法を説明する。
Next, the surface treatment method for the inner surface of the coiled long tube according to the present invention will be described.

【0032】先ず、コイル状長尺管1の一端からその内
部に牽引線8を挿通させ、その牽引線8の先端を、コイ
ル状長尺管1の他端に設けられたメッキ液シール材2a
を貫通させると共に、牽引線巻取装置9に巻き付ける。
First, a pulling wire 8 is inserted from one end of the coiled long tube 1 into the inside thereof, and the leading end of the pulling wire 8 is connected to the plating solution sealing material 2 a provided at the other end of the coiled long tube 1.
And wound around the tow line winding device 9.

【0033】次に、牽引線8の後端と陽電極線12の先
端とを接続すると共に、陽電極線12における最後尾の
電極線露出部6の直後に、メッキ液シール材2bを貫通
して設ける。
Next, the rear end of the traction line 8 is connected to the front end of the positive electrode wire 12, and the plating solution sealing material 2 b is penetrated immediately after the last electrode wire exposed portion 6 of the positive electrode wire 12. Provided.

【0034】次に、コイル状長尺管1の内部にメッキ液
3を注入・充満させると共に、牽引線巻取装置9を作動
させて、コイル状長尺管1の他端をメッキ液シール材2
bで塞ぎ、メッキ液3を密閉する。
Next, the plating solution 3 is injected and filled into the coiled long tube 1, and the traction wire winding device 9 is operated so that the other end of the coiled long tube 1 is sealed with the plating solution sealing material. 2
b, and the plating solution 3 is sealed.

【0035】次に、メッキ電源10のマイナス極に接続
されたリード線11aをコイル状長尺管1に接続すると
共に、メッキ電源10のプラス極に接続されたリード線
11bを陽電極線12の後端に接続する。
Next, the lead wire 11a connected to the negative pole of the plating power source 10 is connected to the coiled long tube 1, and the lead wire 11b connected to the positive pole of the plating power source 10 is connected to the positive electrode wire 12. Connect to the rear end.

【0036】その後、メッキ電源10を作動させてA−
B間(コイル状長尺管と陽電極線の後端との間)に電圧
を印加すると共に、牽引線巻取装置9を作動させて牽引
線8を一定の速度で巻取る。ここで、牽引線8は、一方
向に巻取るだけでなく、往復動させてもよいことは言う
までもない。
Thereafter, the plating power supply 10 is operated to set A-
A voltage is applied between B (between the coiled long tube and the rear end of the positive electrode wire), and the traction line winding device 9 is operated to wind the traction line 8 at a constant speed. Here, it goes without saying that the towing line 8 may be reciprocated as well as wound in one direction.

【0037】これによって、コイル状長尺管内面に良好
(コイル状長尺管内面の長手方向および円周方向の膜厚
分布・膜質が均一)なメッキ膜を得る。
As a result, a plated film having good (uniform thickness distribution and film quality in the longitudinal and circumferential directions of the inner surface of the coiled long tube) is obtained on the inner surface of the coiled long tube.

【0038】ここで、牽引線8の巻取速度および印加電
圧を任意に選定することで、メッキ処理時間およびメッ
キ膜厚を任意に設定することが可能となり、電極線露出
部6の長手方向総延長は、メッキ膜厚に正比例または陽
電極線12の移動速度に反比例させて決定されるもので
ある。
Here, by arbitrarily selecting the winding speed of the pulling wire 8 and the applied voltage, the plating process time and the plating film thickness can be arbitrarily set, and the total length of the electrode wire exposed portion 6 in the longitudinal direction can be set. The extension is determined in direct proportion to the plating film thickness or in inverse proportion to the moving speed of the positive electrode wire 12.

【0039】すなわち、本発明のコイル状長尺管内面の
表面処理方法によれば、湾曲した電極線の表面部に所定
の間隔を有して被覆材を形成した陽電極線を、コイル状
長尺管の内径中心に位置させると共に、その陽電極線を
コイル状長尺管内部を移動させながら通電を行うため、
長手方向および円周方向の膜厚分布・膜質が均一で緻密
なメッキ膜が得られると共に、そのメッキ膜厚も自由に
設定することができる。
That is, according to the surface treatment method for the inner surface of the coiled long tube of the present invention, the positive electrode wire having the coating material formed at a predetermined interval on the surface of the curved electrode wire is connected to the coiled long wire. In order to conduct electricity while moving the positive electrode wire inside the coiled long tube while positioning it at the center of the inner diameter of the long tube,
A dense plating film having a uniform film thickness distribution and film quality in the longitudinal direction and the circumferential direction can be obtained, and the plating film thickness can be freely set.

【0040】また、長手方向および円周方向の膜厚分布
・膜質が均一で緻密なメッキ膜が得られるため、コイル
状長尺管内面の信頼性および耐久性を向上することがで
きる。
Further, since a dense plating film having a uniform film thickness distribution and film quality in the longitudinal direction and the circumferential direction can be obtained, the reliability and durability of the inner surface of the coiled long tube can be improved.

【0041】尚、本発明のコイル状長尺管内面の表面処
理方法は、単なる前処理方法として利用してもよいこと
は言うまでもない。
Incidentally, it goes without saying that the surface treatment method for the inner surface of the coiled long tube of the present invention may be used as a simple pretreatment method.

【0042】次に、本発明の他の実施の形態を説明す
る。
Next, another embodiment of the present invention will be described.

【0043】本発明のコイル状長尺管内面の表面処理方
法においては、陽電極線を移動させるために陽電極線の
先端に牽引線を接続し、その牽引線を牽引線巻取装置で
巻取るものであった。
In the surface treatment method for the inner surface of the coiled long tube according to the present invention, a traction line is connected to the tip of the positive electrode wire to move the positive electrode wire, and the traction line is wound by a traction line winding device. Was to take.

【0044】第1の実施の形態のコイル状長尺管内面の
表面処理方法に用いる装置の模式図を図2に示す。尚、
図1と同様の部材には同じ符号を付している。
FIG. 2 is a schematic view of an apparatus used in the surface treatment method for the inner surface of the coiled long tube according to the first embodiment. still,
The same members as those in FIG. 1 are denoted by the same reference numerals.

【0045】図2に示すように、第1の実施の形態のコ
イル状長尺管内面の表面処理方法に用いる装置は、基本
的な構成は本発明に用いた装置と同じであるものの、陽
電極線を移動させるための手段が相違する。
As shown in FIG. 2, the apparatus used in the surface treatment method for the inner surface of the coiled long tube according to the first embodiment has the same basic structure as the apparatus used in the present invention, but has a different structure. The means for moving the electrode wire is different.

【0046】陽電極線12がコイル状長尺管1内を移動
すべく、陽電極線12の先端部には、コイル状長尺管1
の内径と略同径の移動体27が設けられている。移動体
27は略半球形状を呈しており、陽電極線12の進行方
向後方側に窪み部を有している。この移動体27の窪み
部に、コイル状長尺管1の外部から流体力を付与するこ
とで、移動体27が陽電極線12を牽引するものであ
る。
In order for the positive electrode wire 12 to move inside the coiled long tube 1, the distal end of the positive electrode wire 12 is attached to the coiled long tube 1.
A moving body 27 having substantially the same diameter as the inside diameter of the moving body 27 is provided. The moving body 27 has a substantially hemispherical shape, and has a concave portion on the rear side in the traveling direction of the positive electrode wire 12. The moving body 27 pulls the positive electrode wire 12 by applying a fluid force to the hollow portion of the moving body 27 from outside the coiled long tube 1.

【0047】ここで、移動体27の進行方向直後のメッ
キ液3が、常時、窪み部に滞留し、更新されないことに
より、メッキ液3が徐々に劣化し、コイル状長尺管1の
長手方向におけるメッキ膜の膜質が悪化するおそれがあ
る。このため、劣化したメッキ液3を移動体27の進行
方向前方側に一部流出させるためのメッキ液リーク孔2
8を、移動体27の進行方向前方表面から進行方向後方
表面に貫通して形成していてもよい。
Here, the plating solution 3 immediately after the moving direction of the moving body 27 always stays in the recessed portion and is not updated, so that the plating solution 3 gradually deteriorates, and the plating solution 3 in the longitudinal direction of the coiled long tube 1 is degraded. There is a possibility that the film quality of the plating film may deteriorate. For this reason, the plating solution leak hole 2 for allowing the deteriorated plating solution 3 to partially flow out to the front side in the traveling direction of the moving body 27.
8 may be formed to penetrate from the front surface in the traveling direction of the moving body 27 to the rear surface in the traveling direction.

【0048】移動体27の材質としては特に限定するも
のではないが、軟質ゴムなどの柔らかい材質のものが特
に好ましい。
The material of the moving body 27 is not particularly limited, but a soft material such as soft rubber is particularly preferable.

【0049】流体力を付与する手段は、陽電極線12の
進行方向後端部近傍に設けられたメッキ液注入管21
と、メッキ液注入管21に接続されたポンプ25と、各
表面処理液が満たされた表面処理液タンク(メッキ液3
が満たされたメッキ液タンク23のみ図示)と、ポンプ
25と各表面処理液タンクを接続する表面処理液吸入管
(メッキ液吸入管24のみ図示)からなるものである。
The means for applying the fluid force is a plating solution injection pipe 21 provided near the rear end of the positive electrode wire 12 in the traveling direction.
And a pump 25 connected to the plating solution injection pipe 21 and a surface treatment solution tank (plating solution 3) filled with each surface treatment solution.
And a surface treatment solution suction pipe (only the plating solution suction pipe 24 is shown) connecting the pump 25 and each surface treatment solution tank.

【0050】本実施の形態のコイル状長尺管内面の表面
処理方法は、先ず、コイル状長尺管1の一端から、コイ
ル状長尺管1の内部に、先端に移動体27を設けた陽電
極線12を挿入する。コイル状長尺管1の一端には、陽
電極線12が中央部近傍を貫通したメッキ液シール材2
bが設けられていると共に、他端にはメッキ液シール材
2aが設けられている。ここで、陽電極線12における
サポーター17には、流体力を効率的に移動体27に付
与するための貫通孔が形成されている。
In the surface treatment method for the inner surface of the coiled long tube according to the present embodiment, first, a moving body 27 is provided at one end from the one end of the coiled long tube 1 to the inside of the coiled long tube 1. The positive electrode wire 12 is inserted. At one end of the coiled long tube 1, a positive electrode wire 12 penetrates the vicinity of a central portion of the plating solution sealing material 2.
b, and a plating solution sealing material 2a is provided at the other end. Here, the supporter 17 in the positive electrode wire 12 is formed with a through-hole for efficiently applying a fluid force to the moving body 27.

【0051】次に、メッキ電源10のマイナス極に接続
されたリード線11aをコイル状長尺管1に接続すると
共に、メッキ電源10のプラス極に接続されたリード線
11bを陽電極線12の後端に接続する。
Next, the lead wire 11a connected to the negative pole of the plating power source 10 is connected to the coiled long tube 1, and the lead wire 11b connected to the positive pole of the plating power source 10 is connected to the positive electrode wire 12. Connect to the rear end.

【0052】その後、メッキ電源10を作動させてA−
B間(コイル状長尺管と陽電極線の後端との間)に電圧
を印加すると共に、ポンプ25を作動させてコイル状長
尺管1の内部にメッキ液3、各種水洗液、乾燥促進液、
および乾燥空気などを連続的に注入・充満し、移動体2
7を一定の速度で移動させる。
Thereafter, the plating power supply 10 is operated to set A-
A voltage is applied between B (between the coiled long tube and the rear end of the positive electrode wire), and the pump 25 is operated to put the plating solution 3, various washing liquids, and drying inside the coiled long tube 1. Accelerating liquid,
And dry air is continuously injected and filled with
7 is moved at a constant speed.

【0053】ここで、移動体27の移動速度および印加
電圧を任意に選定することで、メッキ処理時間およびメ
ッキ膜厚を任意に設定することが可能となり、電極線露
出部6の長手方向総延長は、メッキ膜厚に正比例または
陽電極線12の移動速度に反比例させて決定されるもの
である。
Here, by arbitrarily selecting the moving speed of the moving body 27 and the applied voltage, the plating processing time and the plating film thickness can be arbitrarily set, and the total length of the electrode wire exposed portion 6 in the longitudinal direction can be increased. Is determined in direct proportion to the plating film thickness or in inverse proportion to the moving speed of the positive electrode wire 12.

【0054】本実施の形態のコイル状長尺管の表面処理
方法においても、本発明と同様の作用効果を奏すること
は言うまでもない。
It goes without saying that the surface treatment method for the coiled long tube of the present embodiment also has the same function and effect as the present invention.

【0055】さらに、本実施の形態のコイル状長尺管の
表面処理方法においては、以下に示す新たな作用効果を
奏する。
Further, the surface treatment method for a coiled long tube according to the present embodiment has the following new effects.

【0056】 メッキ処理後におけるメッキ液の除去
工程および各種水洗液の注入工程を一体的に行うことが
できるため、表面処理全工程に要する時間を大幅に短縮
することが可能となり、作業能率の向上および製造コス
トの低減を図ることができる。
Since the step of removing the plating solution and the step of injecting various washing liquids after the plating treatment can be performed integrally, the time required for all the surface treatment steps can be greatly reduced, and the work efficiency can be improved. In addition, the manufacturing cost can be reduced.

【0057】 メッキ液を、移動体の進行方向後方側
における窪み部近傍の一部のみにしか注入・充満しない
ため、メッキ液の使用量を大幅に減らすことができる。
Since the plating solution is injected and filled only in a part of the vicinity of the recess on the rear side in the traveling direction of the moving body, the amount of the plating solution used can be significantly reduced.

【0058】 陽電極線の牽引距離が当初は小さいこ
とにより、コイル状長尺管内挿入物の摩擦抵抗が小さく
なるため、小径のコイル状長尺管内面にも容易に表面処
理を施すことができる。
[0058] Since the pulling distance of the positive electrode wire is initially small, the frictional resistance of the insert in the coiled long tube becomes small, so that the inner surface of the coiled long tube having a small diameter can be easily subjected to surface treatment. .

【0059】第2の実施の形態のコイル状長尺管内面の
表面処理方法に用いる装置の模式図を図3に示す。尚、
図1と同様の部材には同じ符号を付している。
FIG. 3 is a schematic view of an apparatus used in the surface treatment method for the inner surface of the coiled long tube according to the second embodiment. still,
The same members as those in FIG. 1 are denoted by the same reference numerals.

【0060】図3に示すように、本実施の形態のコイル
状長尺管内面の表面処理方法に用いる装置は、第1の実
施の形態に用いた装置と基本的な構成は同じであり、図
2の先端に移動体27が接続された陽電極線12を直列
に連結したものである。
As shown in FIG. 3, the device used in the surface treatment method for the inner surface of the coiled long tube of the present embodiment has the same basic configuration as the device used in the first embodiment. The positive electrode wire 12 having the moving body 27 connected to the tip of FIG. 2 is connected in series.

【0061】ここで、脱脂処理や酸洗浄を何ら施さずに
メッキ処理を施した場合、或いは日常的に使用している
浸漬脱脂のみを施した後にメッキ処理を施した場合にお
いては、コイル状長尺管内部に付着している油脂やスケ
ールが除去されにくく、コイル状長尺管内面には、油脂
やスケールなどの付着跡に沿って多数のメッキ欠陥が生
じ、実用に耐え得るメッキ膜が得られない。
Here, when plating is performed without performing any degreasing treatment or acid cleaning, or when plating is performed after performing only immersion degreasing that is used on a daily basis, the coil-shaped length is reduced. It is difficult to remove grease and scale adhering to the inside of the long tube, and many plating defects occur on the inner surface of the coiled long tube along the adhesion marks of grease and scale, resulting in a plating film that can withstand practical use. I can't.

【0062】このため、密着性が良好で、かつ、緻密な
メッキ膜を得るには、メッキ処理の前処理として脱脂や
酸洗浄が極めて重要となる。また、閉じられた空間であ
るコイル状長尺管内部は、比液量が小さく、液の対流、
流動、交換も生じにくいため、脱脂や酸洗浄などの電解
を付与した前処理が必要となる。
For this reason, in order to obtain a dense plating film with good adhesion, degreasing and acid cleaning are extremely important as pretreatments for plating. In addition, the inside of the coiled long tube, which is a closed space, has a small specific liquid volume, convection of the liquid,
Since flow and exchange hardly occur, pretreatment with electrolysis such as degreasing or acid washing is required.

【0063】本実施の形態のコイル状長尺管内面の表面
処理方法は、第1の実施の形態のコイル状長尺管内面の
表面処理方法におけるコイル状長尺管1の内部へのメッ
キ液注入前に、脱脂液、酸洗浄液、水洗液などを連続注
入し、メッキ前処理とメッキ処理とを一体的に行うもの
である。
The surface treatment method for the inner surface of the coiled long tube according to the present embodiment is the same as the plating solution for the inside of the coiled long tube 1 in the surface treatment method for the inner surface of the coiled long tube according to the first embodiment. Prior to the injection, a degreasing solution, an acid cleaning solution, a water washing solution, and the like are continuously injected, and the plating pretreatment and the plating treatment are integrally performed.

【0064】コイル状長尺管1の内部には、移動体27
aの位置から陽電極線12の進行方向後方側にかけて、
アルカリ脱脂液部a、第1水洗液部b、酸洗浄液部c、
第2水洗液部d、Sn−Pb液部e、乾燥促進液部fが
形成されており、脱脂、水洗、酸洗浄、水洗、メッキ、
および乾燥などの各工程を一体的に行う。
The moving body 27 is provided inside the coiled long tube 1.
From the position a to the rear side in the traveling direction of the positive electrode wire 12,
An alkali degreasing solution part a, a first washing solution part b, an acid washing solution part c,
A second washing liquid part d, a Sn-Pb liquid part e, and a drying accelerating liquid part f are formed, and degreasing, water washing, acid washing, water washing, plating,
And steps such as drying are integrally performed.

【0065】尚、図中には示していないが、乾燥促進液
部fの後方に乾燥空気部を形成することにより、コイル
状長尺管1の内面の乾燥を、より短時間で行うことがで
きることは言うまでもない。
Although not shown in the drawing, the drying of the inner surface of the coiled long tube 1 can be performed in a shorter time by forming a dry air portion behind the drying promoting liquid portion f. It goes without saying that you can do it.

【0066】本実施の形態のコイル状長尺管の表面処理
方法においても、本発明と同様の作用効果を奏すること
は言うまでもなく、内面に油脂やスケールが多量に付着
したコイル状長尺管に対しても、密着性が良好で、か
つ、緻密なメッキ膜を形成することができるという新た
な作用効果を奏する。
The surface treatment method for a coiled long tube according to the present embodiment can, of course, provide the same operation and effect as the present invention, and can also be applied to a coiled long tube having a large amount of grease or scale adhered to the inner surface. On the other hand, a new function and effect is obtained in which the adhesion is good and a dense plating film can be formed.

【0067】[0067]

【実施例】【Example】

(実施例1)先ず、予め内部を洗浄しておいた内径1
5.8mm、肉厚1mm、長さ100m、コイル巻半径
1.2mのコイル状長尺銅管の一端から導入した牽引線
を挿通させ、その牽引線の先端を、コイル状長尺銅管の
他端に設けられたメッキ液シール材を貫通させると共
に、牽引線巻取装置に巻き付ける。
(Embodiment 1) First, the inside diameter 1 of which the inside was previously cleaned
A traction line introduced from one end of a coiled long copper tube having a length of 5.8 mm, a thickness of 1 mm, a length of 100 m, and a coil winding radius of 1.2 m is passed through, and the tip of the traction line is inserted into the coiled long copper tube. The plating solution sealing material provided at the other end is made to penetrate and is wound around a traction line winding device.

【0068】次に、CuあるいはAg製の電極線の表面
を、摺動抵抗の小さいテフロン樹脂で0.1mm厚に被
覆して陽電極線を形成すると共に、その陽電極線の先端
部に、20cm間隔で5cm長さの電極線露出部を60
個形成する。電極線露出部は、Ptメッキが施されてお
り、コイル状長尺銅管の長手方向総延長は3mである。
Next, the surface of the electrode wire made of Cu or Ag is coated with Teflon resin having a small sliding resistance to a thickness of 0.1 mm to form a positive electrode wire, and at the tip of the positive electrode wire, Exposing the electrode wire exposed part of 5cm length at intervals of 20cm to 60
Individually formed. The exposed portion of the electrode wire is plated with Pt, and the total length of the coiled long copper tube in the longitudinal direction is 3 m.

【0069】次に、牽引線の後端と陽電極線の先端とを
接続すると共に、陽電極線における最後尾の電極線露出
部の直後に、メッキ液シール材を貫通して設ける。
Next, the rear end of the traction wire is connected to the front end of the positive electrode wire, and a plating solution sealing material is provided to penetrate immediately after the last exposed portion of the positive electrode wire.

【0070】次に、コイル状長尺銅管の内部に、25℃
の市販の電気Snメッキ液(日本リーロナール社製、ロ
ナスタンEC)を注入・充満させると共に、牽引線巻取
装置を作動させて、コイル状長尺銅管の他端をメッキ液
シール材で塞ぎ、電気Snメッキ液を密閉する。
Next, the inside of the coiled long copper tube was placed at 25 ° C.
Injection and filling of a commercially available electric Sn plating solution (Ronastan EC, manufactured by Nippon Lee Ronal Co., Ltd.), and by operating the traction wire winding device, plug the other end of the coiled long copper tube with a plating solution sealing material. The electric Sn plating solution is sealed.

【0071】次に、メッキ電源のマイナス極に接続され
たリード線をコイル状長尺銅管に接続すると共に、メッ
キ電源のプラス極に接続されたリード線を陽電極線の後
端に接続する。
Next, the lead wire connected to the negative pole of the plating power supply is connected to the coiled long copper tube, and the lead wire connected to the positive pole of the plating power supply is connected to the rear end of the positive electrode wire. .

【0072】その後、メッキ電源を作動させてコイル状
長尺銅管と陽電極線の後端との間に電圧を印加すると共
に、牽引線巻取装置を作動させて牽引線を1m/sの速
度で巻取る。この時、電流密度は、見掛けメッキ面積に
対し2A/dm2 となるようにする。また、電極線被覆
部の一部に形成されたサポーターにより、陽電極線は常
にコイル状長尺銅管の中心に位置した状態で移動する。
Thereafter, the plating power supply was operated to apply a voltage between the coiled long copper tube and the rear end of the positive electrode wire, and the traction line winding device was operated to change the traction line to 1 m / s. Wind at speed. At this time, the current density is set to 2 A / dm 2 with respect to the apparent plating area. In addition, the support wire formed on a part of the electrode wire coating portion causes the positive electrode wire to always move while being positioned at the center of the coiled long copper tube.

【0073】その後、合計100分間の通電を行うが、
コイル状長尺銅管の任意地点におけるメッキ通電時間は
実質上3分間となる。
Thereafter, energization is performed for a total of 100 minutes.
The plating energization time at an arbitrary point on the coiled long copper tube is substantially 3 minutes.

【0074】(実施例2)陽電極線を1mのストロー
ク、1m/minの速度で3分間、前後方向に往復動さ
せる他は、実施例1と同様にして通電メッキを行う。
(Embodiment 2) Electroplating is carried out in the same manner as in Embodiment 1, except that the positive electrode wire is reciprocated back and forth at a stroke of 1 m, at a speed of 1 m / min for 3 minutes.

【0075】(比較例1)電極線露出部が大部分を占め
る陽電極線を用い、陽電極線が実質的に停止した状態で
通電メッキを行う他は、実施例1と同様にして通電メッ
キを行う。
(Comparative Example 1) Except for using a positive electrode wire in which the exposed portion of the electrode wire occupies a large part and conducting electroplating in a state where the positive electrode wire is substantially stopped, the electroplating is performed in the same manner as in Example 1. I do.

【0076】その結果、実施例1および実施例2のコイ
ル状長尺銅管の内面には、平均厚さ2μm、長手方向の
膜厚誤差が最大で0.2μm、円周方向の膜厚誤差が最
大で0.5μmの電気Snメッキ膜が形成され、無電解
Snメッキ膜と比べて格段に緻密で、かつ、平滑であり
(光沢があり)、また、ピンホールも全く観察されなか
った。
As a result, the inner surface of the coiled long copper tubes of Examples 1 and 2 had an average thickness of 2 μm, a maximum thickness error of 0.2 μm in the longitudinal direction, and a maximum thickness error in the circumferential direction. Was formed at a maximum of 0.5 μm, which was remarkably denser and smoother (brighter) than the electroless Sn plating film, and no pinhole was observed.

【0077】これに対して、比較例1のコイル状長尺銅
管の内面は、付与電流密度が大きい場合、管入口側が著
しい焼けメッキになり、付与電流密度が小さい場合、管
入口側における焼けメッキは防止できるものの、管長手
方向中央部(入口から50m付近)に電気Snメッキ膜
がほとんど付着していなかった。
On the other hand, when the applied current density is large, the inner surface of the coil-shaped long copper tube of Comparative Example 1 is remarkably burnt plating on the tube inlet side, and when the applied current density is small, the inner surface is burnt on the tube inlet side. Although plating could be prevented, the electric Sn plating film hardly adhered to the central portion in the longitudinal direction of the tube (around 50 m from the entrance).

【0078】オーム効果を防止すると共に、これらの問
題が生じるのを防ぐべく、陽電極線(電極線)の外径を
10mmにした場合、電気Snメッキ膜の膜厚および膜
質が若干向上する(直管を用いた実験で確認)ものの、
陽電極線をコイル状長尺銅管内に挿入する作業が極めて
困難になり、陽電極線を10m以上挿入することは不可
能であった。
When the outer diameter of the positive electrode wire (electrode wire) is set to 10 mm in order to prevent the ohmic effect and to prevent these problems, the thickness and quality of the electric Sn plating film are slightly improved ( Confirmed by experiments using straight pipes)
It became extremely difficult to insert the positive electrode wire into the coiled long copper tube, and it was impossible to insert the positive electrode wire for 10 m or more.

【0079】(実施例3)先ず、CuあるいはAg製の
電極線の表面を、摺動抵抗の小さいテフロン樹脂で0.
1mm厚に被覆して陽電極線を形成すると共に、その陽
電極線の先端部に、20cm間隔で5cm長さの電極線
露出部を60個形成する。電極線露出部は、Ptメッキ
が施されており、コイル状長尺銅管の長手方向総延長は
3mである。
Example 3 First, the surface of an electrode wire made of Cu or Ag was coated with Teflon resin having a small sliding resistance to a thickness of 0.1 mm.
A positive electrode wire is formed by coating to a thickness of 1 mm, and at the tip of the positive electrode wire, 60 electrode wire exposed portions having a length of 5 cm are formed at intervals of 20 cm. The exposed portion of the electrode wire is plated with Pt, and the total length of the coiled long copper tube in the longitudinal direction is 3 m.

【0080】次に、この陽電極線の先端に軟質ゴム製の
移動体を設けて陽電極線部を形成すると共に、その陽電
極線部を、予め内部を洗浄しておいた内径15.8m
m、肉厚1mm、長さ100m、コイル巻半径1.2m
のコイル状長尺銅管の一端から、その内部に挿入する。
Next, a moving member made of a soft rubber is provided at the tip of the positive electrode wire to form a positive electrode wire portion, and the positive electrode wire portion has an inner diameter of 15.8 m, the inside of which has been cleaned in advance.
m, wall thickness 1mm, length 100m, coil winding radius 1.2m
From one end of the coiled long copper tube.

【0081】次に、コイル状長尺銅管の一端を、陽電極
線部が中央部近傍を貫通したメッキ液シール材で密閉す
る。
Next, one end of the coil-shaped long copper tube is sealed with a plating solution sealing material in which the positive electrode wire penetrates the vicinity of the center.

【0082】次に、メッキ電源のマイナス極に接続され
たリード線をコイル状長尺銅管に接続すると共に、メッ
キ電源のプラス極に接続されたリード線を陽電極線部の
後端に接続する。
Next, the lead wire connected to the negative pole of the plating power supply is connected to the coiled long copper tube, and the lead wire connected to the positive pole of the plating power supply is connected to the rear end of the positive electrode wire portion. I do.

【0083】その後、メッキ電源を作動させてコイル状
長尺銅管と陽電極線部の後端との間に電圧を印加すると
共に、ポンプを作動させてコイル状長尺銅管の内部に、
電気Snメッキ液、弱アルカリ性水洗液、純水、メタノ
ール、および乾燥空気などを連続的に各25mlづつ注
入・充満し、移動体を1m/sの速度で移動させる。こ
の時、電流密度は、見掛けメッキ面積に対し2A/dm
2 となるようにする。また、電極線被覆部の一部に形成
されたサポーターにより、陽電極線部は常にコイル状長
尺銅管の中心に位置した状態で移動する。
Thereafter, the plating power supply is operated to apply a voltage between the coiled long copper tube and the rear end of the positive electrode wire portion, and the pump is operated to put the inside of the coiled long copper tube into the inside.
An electric Sn plating solution, a weak alkaline washing solution, pure water, methanol, dry air and the like are continuously injected and filled in a volume of 25 ml each, and the moving body is moved at a speed of 1 m / s. At this time, the current density was 2 A / dm with respect to the apparent plating area.
To be 2 . Further, the positive electrode wire portion always moves while being positioned at the center of the coiled long copper tube by the supporter formed in a part of the electrode wire coating portion.

【0084】その後、合計100分間の通電を行うが、
コイル状長尺銅管の任意地点におけるメッキ通電時間は
実質上3分間となる。
Thereafter, energization is performed for a total of 100 minutes.
The plating energization time at an arbitrary point on the coiled long copper tube is substantially 3 minutes.

【0085】その結果、実施例3においても、実施例1
および実施例2と同様の電気Snメッキ膜が得られた。
As a result, in Embodiment 3, Embodiment 1
And the same electric Sn plating film as Example 2 was obtained.

【0086】(実施例4)先ず、CuあるいはAg製の
電極線の表面を、摺動抵抗の小さいテフロン樹脂で0.
1mm厚に被覆して陽電極線を形成すると共に、その陽
電極線の先端部に、20cm間隔で5cm長さの電極線
露出部を60個形成する。電極線露出部は、Ptメッキ
が施されており、コイル状長尺銅管の長手方向総延長は
3mである。
(Example 4) First, the surface of an electrode wire made of Cu or Ag was coated with Teflon resin having a small sliding resistance to a thickness of 0.1 mm.
A positive electrode wire is formed by coating to a thickness of 1 mm, and at the tip of the positive electrode wire, 60 electrode wire exposed portions having a length of 5 cm are formed at intervals of 20 cm. The exposed portion of the electrode wire is plated with Pt, and the total length of the coiled long copper tube in the longitudinal direction is 3 m.

【0087】次に、この陽電極線の先端に軟質ゴム製の
移動体を設けて陽電極線部を形成すると共に、その陽電
極線部を2本直列に連結する。この連結した陽電極線部
を、予め内部を洗浄しておいた内径10mm、肉厚0.
8mm、長さ200m、コイル巻半径1.6mのコイル
状長尺銅管の一端から、その内部に挿入する。
Next, a moving member made of soft rubber is provided at the tip of the positive electrode wire to form a positive electrode wire portion, and the two positive electrode wire portions are connected in series. The connected positive electrode wire portion was cleaned in advance with an inner diameter of 10 mm and a wall thickness of 0.1 mm.
A coiled long copper tube having a length of 8 mm, a length of 200 m, and a coil winding radius of 1.6 m is inserted into one end of a long copper tube.

【0088】次に、コイル状長尺銅管の一端を、陽電極
線が中央部近傍を貫通したメッキ液シール材で密閉す
る。
Next, one end of the coil-shaped long copper tube is sealed with a plating solution sealing material having a positive electrode wire penetrating near the center.

【0089】次に、メッキ電源のマイナス極に接続され
たリード線をコイル状長尺銅管に接続すると共に、メッ
キ電源のプラス極に接続されたリード線を陽電極線部の
後端に接続する。
Next, the lead wire connected to the negative pole of the plating power source is connected to the coiled long copper tube, and the lead wire connected to the positive pole of the plating power source is connected to the rear end of the positive electrode wire portion. I do.

【0090】その後、メッキ電源を作動させてコイル状
長尺銅管と陽電極線部の後端との間に電圧を印加すると
共に、ポンプを作動させてコイル状長尺銅管の内部に、
電解脱脂液(2%NaOH+5%NaCO3 +50pp
m界面活性剤の混合液)、第1水洗液(純水)、酸洗浄
液(2%H2 SO4 +4%K2 2 8 混合液)、第2
水洗液(純水)、およびSn−Pbメッキ液(日本リー
ロナール社製、ソルダロンMHS−w)を、それぞれ管
長さ15m相当分、連続的に注入・充満し、移動体を1
m/sの速度で移動させる。この時、電流密度は、見掛
けメッキ面積に対し10A/dm2 となるようにする。
また、電極線被覆部の一部に形成されたサポーターによ
り、陽電極線部は常にコイル状長尺銅管の中心に位置し
た状態で移動する。
Thereafter, the plating power supply is operated to apply a voltage between the coiled long copper tube and the rear end of the positive electrode wire portion, and the pump is operated to put the inside of the coiled long copper tube into the inside.
Electrolytic degreasing solution (2% NaOH + 5% NaCO 3 + 50pp
m surfactant mixture), first washing solution (pure water), acid washing solution (2% H 2 SO 4 + 4% K 2 S 2 O 8 mixed solution), second washing solution (pure water)
A washing liquid (pure water) and a Sn-Pb plating solution (Soldalon MHS-w, manufactured by Nippon Leelonal Co., Ltd.) were continuously injected and filled for a pipe length of 15 m, respectively, and the moving body was set to 1
Move at a speed of m / s. At this time, the current density is set to 10 A / dm 2 with respect to the apparent plating area.
In addition, the positive electrode wire portion always moves while being positioned at the center of the coiled long copper tube by the supporter formed in a part of the electrode wire coating portion.

【0091】その後、合計100分間の通電を行うが、
コイル状長尺銅管の任意地点におけるメッキ通電時間は
実質上3分間となる。
Thereafter, energization is performed for a total of 100 minutes.
The plating energization time at an arbitrary point on the coiled long copper tube is substantially 3 minutes.

【0092】その結果、実施例4のコイル状長尺銅管の
内面に、緻密で、かつ、平滑であり(光沢があり)、ま
た、ピンホールも全くないSn−Pbメッキ膜を形成す
ることができた。
As a result, an Sn—Pb plating film that is dense, smooth (has luster), and has no pinholes is formed on the inner surface of the coiled long copper tube of Example 4. Was completed.

【0093】本発明のコイル状長尺管内面の表面処理方
法は、コイル状の製品に使用することができるのは言う
までもなく、固定された部品、例えば、すでに建設・施
工されたビル内部の給湯配管や各種装置機器配管にも適
用することができる。
The surface treatment method for the inner surface of the coiled long tube of the present invention can be used for a coiled product, needless to say, fixed parts, for example, hot water supply inside a building already constructed and constructed. It can also be applied to piping and various equipment piping.

【0094】[0094]

【発明の効果】以上要するに本発明によれば、次のよう
な優れた効果を発揮する。
In summary, according to the present invention, the following excellent effects are exhibited.

【0095】(1) 湾曲した電極線の表面部に所定の
間隔を有して被覆材を形成した陽電極線を、コイル状長
尺管の内径中心に位置させると共に、その陽電極線をコ
イル状長尺管内部を移動させながら通電を行うことで、
長手方向および円周方向の膜厚分布・膜質が均一で緻密
なメッキ膜が得られると共に、そのメッキ膜厚も自由に
設定することができる。
(1) A positive electrode wire having a coating material formed at a predetermined interval on the surface of a curved electrode wire is positioned at the center of the inner diameter of the coiled long tube, and the positive electrode wire is coiled. By energizing while moving inside the long tube,
A dense plating film having a uniform film thickness distribution and film quality in the longitudinal direction and the circumferential direction can be obtained, and the plating film thickness can be freely set.

【0096】(2) 長手方向および円周方向の膜厚分
布・膜質が均一で緻密なメッキ膜が得られるため、コイ
ル状長尺銅管内面の信頼性および耐久性を向上すること
ができる。
(2) Since a dense plating film having a uniform film thickness distribution and film quality in the longitudinal direction and the circumferential direction can be obtained, the reliability and durability of the inner surface of the coiled long copper tube can be improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明のコイル状長尺管内面の表面処理方法に
用いる装置の模式図である。
FIG. 1 is a schematic view of an apparatus used for a surface treatment method for an inner surface of a coiled long tube of the present invention.

【図2】第1の実施の形態のコイル状長尺管内面の表面
処理方法に用いる装置の模式図である。
FIG. 2 is a schematic view of an apparatus used for a surface treatment method for an inner surface of a coiled long tube according to the first embodiment.

【図3】第2の実施の形態のコイル状長尺管内面の表面
処理方法に用いる装置の模式図である。
FIG. 3 is a schematic diagram of an apparatus used for a surface treatment method for an inner surface of a coiled long tube according to a second embodiment.

【符号の説明】[Explanation of symbols]

1 コイル状長尺管 4 電極線 6 電極線露出部 7,17 サポーター(鍔部) 8 牽引線(牽引用線材) 9 牽引線巻取装置(巻取り手段) 12 陽電極線(被覆電極線) 27a,27b 移動体 DESCRIPTION OF SYMBOLS 1 Coiled long tube 4 Electrode wire 6 Electrode wire exposed part 7, 17 Supporter (flange) 8 Towing wire (towing wire material) 9 Towing wire winding device (winding means) 12 Positive electrode wire (coated electrode wire) 27a, 27b Moving body

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】 コイル状長尺管内部に長尺管表面処理液
或いは電気メッキ液を注入・密閉すると共に、そのコイ
ル状長尺管内部に電極線を挿通し、その電極線とコイル
状長尺管との間に通電を行ってコイル状長尺管内面に洗
浄やメッキなどの表面処理を行う方法において、表面部
が所定の間隔を有して被覆され、かつ、湾曲した被覆電
極線を上記コイル状長尺管の内径中心に位置させると共
に、その被覆電極線をコイル状長尺管内を移動させなが
ら通電を行って表面処理を行うことを特徴とするコイル
状長尺管内面の表面処理方法。
1. A long tube surface treatment solution or an electroplating solution is injected and sealed inside a coiled long tube, and an electrode wire is inserted through the inside of the coiled long tube. In the method of performing a surface treatment such as cleaning or plating on the inner surface of the coiled long tube by conducting electricity between the long tube and the surface portion is coated with a predetermined interval, and a curved coated electrode wire is formed. Surface treatment of the inner surface of the coiled long tube, wherein the surface treatment is performed by energizing the coated electrode wire while moving the coated electrode wire in the coiled long tube while being positioned at the center of the inner diameter of the coiled long tube. Method.
【請求項2】 上記被覆電極線が、上記コイル状長尺管
内を連続的に移動する請求項1記載のコイル状長尺管内
面の表面処理方法。
2. The surface treatment method for an inner surface of a coiled elongated tube according to claim 1, wherein the coated electrode wire continuously moves in the coiled elongated tube.
【請求項3】 電極線露出部の長手方向総延長が、メッ
キ膜厚に正比例または上記被覆電極線の移動速度に反比
例するものである請求項1記載のコイル状長尺管内面の
表面処理方法。
3. The method for treating the inner surface of a coiled long tube according to claim 1, wherein the total extension of the exposed portion of the electrode wire in the longitudinal direction is directly proportional to the plating film thickness or inversely proportional to the moving speed of the coated electrode wire. .
【請求項4】 上記被覆電極線が上記コイル状長尺管の
内径中心に位置すべく、電極線被覆部の一部がコイル状
長尺管の内径と略同径の鍔部となっている請求項1記載
のコイル状長尺管内面の表面処理方法。
4. A part of the electrode wire covering portion is formed as a flange having substantially the same diameter as the inside diameter of the coiled long tube so that the covered electrode wire is located at the center of the inside diameter of the coiled long tube. The surface treatment method for an inner surface of a long coiled tube according to claim 1.
【請求項5】 上記被覆電極線が上記コイル状長尺管内
を移動すべく、その被覆電極線の先端部が、巻取り手段
を備えた牽引用線材と接続されている請求項1又は請求
項4記載のコイル状長尺管内面の表面処理方法。
5. An end of the covered electrode wire is connected to a tow wire provided with a winding means so that the covered electrode wire moves in the coiled long tube. 5. The surface treatment method for the inner surface of the coiled long tube according to 4.
【請求項6】 上記被覆電極線が上記コイル状長尺管内
を移動すべく、その被覆電極線の先端部に設けられたコ
イル状長尺管の内径と略同径の移動体に、上記コイル状
長尺管外部から流体力を付与する請求項1又は請求項4
記載のコイル状長尺管内面の表面処理方法。
6. A moving body having substantially the same diameter as the inner diameter of the coiled long tube provided at the tip of the coated electrode wire so that the coated electrode wire moves in the coiled long tube. The fluid force is applied from the outside of the elongate tube.
A surface treatment method for the inner surface of the coiled long tube described in the above.
【請求項7】 上記コイル状長尺管内に脱脂液を注入・
密閉すると共に、そのコイル状長尺管側を陰極とする通
電、コイル状長尺管内に溶解洗浄液を注入・密閉すると
共に、そのコイル状長尺管側を陽極とする通電、および
コイル状長尺管内に電気メッキ液を注入・密閉すると共
に、そのコイル状長尺管側を陰極とする通電のいずれ
か、又はそれらを組み合わせて行うものである請求項1
記載のコイル状長尺管内面の表面処理方法。
7. A degreasing solution is injected into the coiled long tube.
While enclosing, energizing the coiled long tube side as a cathode, pouring and dissolving the dissolved cleaning liquid into the coiled elongated tube, energizing the coiled long tube side as an anode, and energizing the coiled long tube 2. The method according to claim 1, wherein an electroplating solution is injected into the tube, the tube is sealed, and a current is applied to the coiled long tube side as a cathode or a combination thereof.
A surface treatment method for the inner surface of the coiled long tube described in the above.
【請求項8】 上記脱脂液がアルカリ脱脂液、上記溶解
洗浄液が硫酸液、上記電気メッキ液が電気Snメッキ液
である請求項7記載のコイル状長尺管内面の表面処理方
法。
8. The method of claim 7, wherein the degreasing liquid is an alkaline degreasing liquid, the dissolving and cleaning liquid is a sulfuric acid liquid, and the electroplating liquid is an electric Sn plating liquid.
JP18845197A 1997-07-14 1997-07-14 Surface treatment method for internal surface of coil-shaped long size pipe Pending JPH1129895A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18845197A JPH1129895A (en) 1997-07-14 1997-07-14 Surface treatment method for internal surface of coil-shaped long size pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18845197A JPH1129895A (en) 1997-07-14 1997-07-14 Surface treatment method for internal surface of coil-shaped long size pipe

Publications (1)

Publication Number Publication Date
JPH1129895A true JPH1129895A (en) 1999-02-02

Family

ID=16223934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18845197A Pending JPH1129895A (en) 1997-07-14 1997-07-14 Surface treatment method for internal surface of coil-shaped long size pipe

Country Status (1)

Country Link
JP (1) JPH1129895A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2439807A (en) * 2006-06-20 2008-01-09 Vetco Gray Inc A localised electroplating system
JP2011056422A (en) * 2009-09-10 2011-03-24 Aloka Co Ltd Nozzle washing apparatus
US8101050B2 (en) 2006-06-20 2012-01-24 Vetco Gray Inc. System, method, and apparatus for continuous electroplating of elongated workpieces
JP2013238297A (en) * 2012-05-16 2013-11-28 Kobe Steel Ltd Method for producing laminated composite pipe and laminated composite pipe obtained by the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2439807A (en) * 2006-06-20 2008-01-09 Vetco Gray Inc A localised electroplating system
GB2476405A (en) * 2006-06-20 2011-06-22 Vetco Gray Inc System, method and apparatus for continuous electroplating of elongated work pieces
GB2439807B (en) * 2006-06-20 2012-01-04 Vetco Gray Inc Apparatus for continuous electroplating of elongated workpieces
GB2476405B (en) * 2006-06-20 2012-01-11 Vetco Gray Inc Apparatus for continuous electroplating of elongated workpieces
US8101050B2 (en) 2006-06-20 2012-01-24 Vetco Gray Inc. System, method, and apparatus for continuous electroplating of elongated workpieces
JP2011056422A (en) * 2009-09-10 2011-03-24 Aloka Co Ltd Nozzle washing apparatus
JP2013238297A (en) * 2012-05-16 2013-11-28 Kobe Steel Ltd Method for producing laminated composite pipe and laminated composite pipe obtained by the same

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