JP2000240855A - Covering pipe material - Google Patents
Covering pipe materialInfo
- Publication number
- JP2000240855A JP2000240855A JP11048809A JP4880999A JP2000240855A JP 2000240855 A JP2000240855 A JP 2000240855A JP 11048809 A JP11048809 A JP 11048809A JP 4880999 A JP4880999 A JP 4880999A JP 2000240855 A JP2000240855 A JP 2000240855A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- resin film
- tube
- plating
- coated
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は金属製の管に表面処
理を施してなる被覆管材に係り、特に、自動車用の燃料
配管に好適に用いることができる被覆管材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cladding tubing obtained by subjecting a metal pipe to a surface treatment, and more particularly to a cladding tubing which can be suitably used for fuel pipes for automobiles.
【０００２】[0002]
【従来の技術】自動車用の燃料配管としては、従来から
図６に示すような被覆管材１が使用されている。図６に
示す従来の被覆管材１は、心材として鋼管２を有し、こ
の鋼管２上に腐食による穴あき等の問題を防止するため
のＺｎメッキ層３、クロメート処理層４、そして最上層
として２０〜２００μｍの樹脂皮膜５を順次設けること
により形成されている。2. Description of the Related Art A cladding tube 1 as shown in FIG. 6 has been conventionally used as a fuel pipe for an automobile. The conventional coated tube material 1 shown in FIG. 6 has a steel pipe 2 as a core material, a Zn plating layer 3, a chromate treatment layer 4, and a top layer formed on the steel pipe 2 to prevent a problem such as perforation due to corrosion. It is formed by sequentially providing a resin film 5 of 20 to 200 μm.
【０００３】[0003]
【発明が解決しようとする課題】ところが近年、自動車
用の燃料系では、燃料ポンプの下流側にフィルタを配置
することが一般化しており、このため、エンジンに向け
て送り出される燃料が帯電しやすくなっている。さらに
燃料が配管中を流動する際に、管内周面との摩擦によっ
て静電気がさらに発生する。However, in recent years, in a fuel system for an automobile, it has become common to arrange a filter downstream of a fuel pump, and therefore, the fuel delivered to the engine is easily charged. Has become. Further, when the fuel flows through the pipe, static electricity is further generated due to friction with the inner peripheral surface of the pipe.
【０００４】これに加え、近年、自動車用の燃料配管の
結合には樹脂材よりなるコネクターを使用することが一
般化しているため、管のアースを取ることが困難となり
管に多量の静電気が蓄積される傾向にある。管に蓋積さ
れた静電気はある条件になると放電をおこして管の表面
処理層を破壊し、管の耐食性を著しく劣化させてしまう
という問題が発生している。In addition, in recent years, it has become common to use a connector made of a resin material to connect a fuel pipe for an automobile, so that it is difficult to ground the pipe and a large amount of static electricity is accumulated in the pipe. Tend to be. Under certain conditions, the static electricity trapped in the tube causes a discharge to destroy the surface-treated layer of the tube, thereby causing a problem that the corrosion resistance of the tube is remarkably deteriorated.
【０００５】本発明は、上記実状に鑑みなされたもので
あり、耐食性を確保しつつ静電気の蓄積を防止すること
ができる被覆管材を提供することを目的としている。The present invention has been made in view of the above circumstances, and has as its object to provide a coated tubular material capable of preventing the accumulation of static electricity while ensuring corrosion resistance.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明の被覆管材は、金属製の管に施される表面処
理層の最も表面側に位置する層に導電性を有する樹脂皮
膜を形成することにより、アース性を向上させたことを
特徴としている。In order to achieve the above-mentioned object, a coated tubing material of the present invention is provided with a resin film having conductivity on a layer located on the most surface side of a surface treatment layer applied to a metal pipe. It is characterized by having improved grounding properties by being formed.
【０００７】すなわち本発明は、金属製の管と、前記管
の外周面上に設けられ、樹脂バインダ中に導電性材料を
分散させてなる導電性樹脂皮膜と、を備えた被覆管材を
提供する。なお、前記導電性材料としては、カーボンブ
ラックを用いることが好ましい。[0007] That is, the present invention provides a coated tube material provided with a metal tube and a conductive resin film provided on the outer peripheral surface of the tube and having a conductive material dispersed in a resin binder. . Preferably, carbon black is used as the conductive material.
【０００８】金属製の管が比較的高い耐食性を有してい
る材料、例えばアルミニウム合金等からなる場合、前記
導電性樹脂皮膜は、金属製の管の外周面上にメッキ層を
介することなく設けることができる。この場合、例え
ば、アルミニウム合金等からなる管の表面にクロメート
処理層を設け、その上に前記導電性樹脂皮膜を設けるこ
とができる。When the metal tube is made of a material having a relatively high corrosion resistance, for example, an aluminum alloy, the conductive resin film is provided on the outer peripheral surface of the metal tube without interposing a plating layer. be able to. In this case, for example, a chromate treatment layer can be provided on the surface of a tube made of an aluminum alloy or the like, and the conductive resin film can be provided thereon.
【０００９】金属性の管が比較的低い耐食性の材料、例
えば炭素鋼管等からなる場合、前記導電性樹脂皮膜と金
属製の管の間に、防食を目的とした防食メッキ層を設け
ることができる。When the metal tube is made of a material having relatively low corrosion resistance, for example, a carbon steel tube or the like, an anticorrosion plating layer for anticorrosion can be provided between the conductive resin film and the metal tube. .
【００１０】金属性の管が鋼管の場合、防食メッキ層
は、Ｚｎ系のメッキからなる層を含む単層若しくは複層
のメッキ層により構成することができる。防食メッキ層
がＺｎ系のメッキからなる層を含む複層のメッキ層であ
る場合、Ｚｎ系のメッキ層は最上層に設けることがで
き、この場合と、防食メッキ層がＺｎ系のメッキ層の単
層からなる場合、Ｚｎ系のメッキ層上にクロメート処理
を施し、前記導電性樹脂皮膜をその上に設けることもで
きる。なお、この場合、クロメート処理に代えて、金属
製の管から前記導電性樹脂皮膜への電気伝導を損なわな
い程度のプライマーを設けることも可能である。When the metal pipe is a steel pipe, the anticorrosion plating layer can be constituted by a single-layer or multi-layer plating layer including a layer made of Zn-based plating. When the anticorrosion plating layer is a multi-layer plating layer including a layer made of Zn-based plating, the Zn-based plating layer can be provided on the uppermost layer. In the case of a single layer, a chromate treatment may be performed on the Zn-based plating layer, and the conductive resin film may be provided thereon. In this case, instead of the chromate treatment, it is also possible to provide a primer that does not impair the electric conduction from the metal tube to the conductive resin film.
【００１１】Ｚｎ系のメッキとしては、防食用として用
いることができるＺｎを主成分元素として含有するあら
ゆる種類のメッキ、例えばＺｎメッキ、Ｚｎ−Ｎｉメッ
キ、Ｚｎ−Ａｌメッキ等を用いることができる。As the Zn-based plating, any kind of plating containing Zn as a main component which can be used for anticorrosion, for example, Zn plating, Zn-Ni plating, Zn-Al plating and the like can be used.
【００１２】なお、防食メッキ層がＺｎ系のメッキを当
該防食メッキ層の最上層として有する複層のメッキ層で
ある場合、Ｚｎ系のメッキの下層として、Ｎｉメッキま
たはＮｉメッキおよびＣｕメッキを設けることができ、
この場合、被覆管材の耐食性を更に向上させることがで
きる。When the anticorrosion plating layer is a multi-layer plating layer having Zn-based plating as the uppermost layer of the anticorrosion plating layer, Ni plating or Ni plating and Cu plating are provided as a lower layer of the Zn-based plating. It is possible,
In this case, the corrosion resistance of the coated tube can be further improved.
【００１３】[0013]
【発明の実施の形態】以下、本発明による被覆管材の実
施の形態を図１〜図３を参照して説明する。被覆管材１
０は、金属製の管材としての鋼管２の外周面に、防食メ
ッキ層としてのＺｎメッキ層３（膜厚１０〜３０μ
ｍ）、クロメート処理層４（膜厚０．２〜０．５μｍ）
および導電性樹脂皮膜１１（２０〜２００μｍ）を順次
設けることにより形成されている。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a coated tube according to the present invention; FIG. Coated tubing 1
0 denotes a Zn plating layer 3 (film thickness of 10 to 30 μm) as an anticorrosion plating layer on the outer peripheral surface of a steel pipe 2 as a metal pipe material.
m), chromate treatment layer 4 (film thickness 0.2 to 0.5 μm)
And a conductive resin film 11 (20 to 200 μm).
【００１４】導電性樹脂皮膜１１は、ＰＶＦ（ポリフッ
化ビニル）、ＰＶＤＦ（ポリフッ化ビニリデン）、ＰＰ
（ポリプロピレン）、ＰＥ（ポリエチレン）、ポリアミ
ド等の樹脂バインダと、この樹脂バインダ中に分散させ
たカーボン粉末（カーボンブラック）１２とにより形成
されている。導電性樹脂皮膜１１の電気伝導性は、カー
ボン粉末の含有量を調整することにより１０-6Ω／□程
度となっている。導電性樹脂皮膜１１は、塗装または引
き抜きにより形成することができる。The conductive resin film 11 is made of PVF (polyvinyl fluoride), PVDF (polyvinylidene fluoride), PP
(Polypropylene), PE (polyethylene), polyamide, and other resin binders, and carbon powder (carbon black) 12 dispersed in the resin binder. The electric conductivity of the conductive resin film 11 is about 10 −6 Ω / □ by adjusting the content of the carbon powder. The conductive resin film 11 can be formed by painting or drawing.
【００１５】次に、被覆管材１０の使用方法について説
明する。図２に示すように、被覆管材１０をカーボンを
含有する導電性樹脂材を使用したコネクター１３と接続
し、被覆管材１０とコネクター１３の外周面とを銅線１
４等で接続する。このようにすれば、被覆管材１０に発
生した静電気はコネクター１３へ流すことができる。さ
らにこのコネクター１３の反対側に図示しない被覆管材
１０を接続して上記と同様に銅線１４等で電気的に接続
することにより、被覆管材１０を経由して適当な場所で
アースをとることができる。Next, a method of using the coated tube 10 will be described. As shown in FIG. 2, the coated tube 10 is connected to a connector 13 using a conductive resin material containing carbon, and a copper wire 1 is connected between the coated tube 10 and the outer peripheral surface of the connector 13.
4 and so on. By doing so, the static electricity generated in the coated tube material 10 can flow to the connector 13. Further, by connecting the coated tube material 10 (not shown) to the opposite side of the connector 13 and electrically connecting the same with the copper wire 14 or the like in the same manner as described above, it is possible to take the ground at an appropriate place via the coated tube material 10. it can.
【００１６】また、図３に示すように被覆管材１０と自
動車の車体１５との間を導電性を有するステー材１６で
接続すれば、静電気を自動車の車体１５へ逃すことがで
きる。Further, as shown in FIG. 3, if the covering tube 10 and the vehicle body 15 of the automobile are connected by a stay 16 having conductivity, static electricity can be released to the vehicle body 15 of the automobile.
【００１７】このように被覆管材１０には静電気が蓄積
されないようになっているため、静電気放電により表面
処理層が損傷することがないなお、被覆管材１０の構成
は、図１に示すものに限定されるものではなく、図４乃
至図５に示すような様々な形態を採ることができる。As described above, since the static electricity is not accumulated in the coated tubular material 10, the surface treatment layer is not damaged by the electrostatic discharge. The configuration of the coated tubular material 10 is limited to that shown in FIG. Instead, various forms as shown in FIGS. 4 and 5 can be adopted.
【００１８】例えば、防食メッキ層３を複数のメッキ層
から構成することができる。この場合の実施形態の一例
が図４に示される。図４に示す実施形態においては、被
覆管材１０は、鋼管２の外周面に、防食メッキ層３とし
てＮｉメッキ層３ａ、Ｚｎメッキ層３ｂを順次積層し、
Ｚｎメッキ層３ｂの上にクロメート処理層４を施し、さ
らにその上に導電性樹脂皮膜１１を設けることにより形
成されている。このように防食メッキ層３を複合化する
ことにより、被覆管材の耐食寿命を更に向上させること
ができる。なお、防食メッキ層３としてＮｉメッキ層３
ａの下に更にＣｕメッキ層を設けることもできる。For example, the anticorrosion plating layer 3 can be composed of a plurality of plating layers. An example of the embodiment in this case is shown in FIG. In the embodiment shown in FIG. 4, the coating tube material 10 is formed by sequentially laminating a Ni plating layer 3 a and a Zn plating layer 3 b as an anticorrosion plating layer 3 on the outer peripheral surface of the steel pipe 2.
It is formed by applying a chromate treatment layer 4 on the Zn plating layer 3b and further providing a conductive resin film 11 thereon. By thus combining the anticorrosion plating layer 3, the corrosion resistance life of the coated tube can be further improved. The Ni plating layer 3 is used as the anticorrosion plating layer 3.
A Cu plating layer can be further provided under a.
【００１９】図５に更に他の実施形態を示す。ここで
は、耐食性に比較的優れた金属の一例として、５０００
系のアルミニウム合金管２Ａの上に、クロメート処理層
４Ａを施し、その上に導電性樹脂皮膜１１が設けられて
いる。FIG. 5 shows still another embodiment. Here, 5000 is an example of a metal having relatively excellent corrosion resistance.
A chromate treatment layer 4A is provided on a system aluminum alloy tube 2A, and a conductive resin film 11 is provided thereon.
【００２０】このように、図４および図５に示す実施形
態においても、図１に示す実施形態と略同一の効果を得
ることができる。As described above, in the embodiment shown in FIGS. 4 and 5, substantially the same effects as in the embodiment shown in FIG. 1 can be obtained.
【００２１】以上説明したように、上記の実施形態によ
れば、被覆管材の腐食寿命の向上に寄与する樹脂皮膜を
排除することなく、被覆管材の内周面で発生若しくは管
内周面を介して被覆管材に伝達される静電気を、被覆管
材の最外周面に逃がすことができる。このため、樹脂皮
膜が存在すること自体により被覆管材の腐食寿命を確保
できることと同時に、静電気放電による被覆管材の表面
処理層の破壊に起因する被覆管材の腐食寿命の低下を防
止することができる。このため、腐食寿命の長い被覆管
材を得ることができる。As described above, according to the above-described embodiment, without excluding the resin film that contributes to the improvement of the corrosion life of the coated tube, it is generated on the inner peripheral surface of the coated tube or via the inner surface of the tube. The static electricity transmitted to the covering tube can be released to the outermost peripheral surface of the covering tube. Therefore, the corrosion life of the coated tubing can be ensured by the presence of the resin film itself, and at the same time, the deterioration of the corrosion life of the coated tubing due to the destruction of the surface treatment layer of the coated tubing due to electrostatic discharge can be prevented. For this reason, a coated tube material having a long corrosion life can be obtained.
【００２２】なお、本発明による被覆管材は、内燃機関
に燃料を供給するための配管、特に自動車用の燃料配管
に特に好適に用いることができるものであるが、その用
途はこれに限定されるものではなく、耐食性が要求され
るとともに静電気の蓄積が問題となる部位に広く適用す
ることが可能である。The cladding tube according to the present invention can be particularly suitably used for a pipe for supplying fuel to an internal combustion engine, especially for a fuel pipe for an automobile, but its use is not limited to this. However, the present invention can be widely applied to parts where corrosion resistance is required and where accumulation of static electricity is a problem.
【００２３】[0023]
【発明の効果】以上説明したように、本発明によれば、
被覆管材の腐食寿命を向上させることができる。As described above, according to the present invention,
The corrosion life of the coated tube can be improved.
【図１】本発明による被覆管材の一実施形態を示す図で
あって、被覆管材の構成を示す断面図。FIG. 1 is a view showing one embodiment of a coated tube according to the present invention, and is a cross-sectional view showing a configuration of the coated tube.
【図２】図１に示す被覆管材をコネクターに挿着した状
態を示す図。FIG. 2 is a view showing a state in which the covering tube shown in FIG. 1 is inserted into a connector.
【図３】図１に示す被覆管材をステー材により自動車の
車体へ固定した状態を示す図。FIG. 3 is a diagram showing a state in which the cladding tube shown in FIG. 1 is fixed to a vehicle body of an automobile by stay members.
【図４】本発明による被覆管材の他の実施形態を示す断
面図。FIG. 4 is a cross-sectional view showing another embodiment of the coated tube material according to the present invention.
【図５】本発明による被覆管材の更に他の実施形態を示
す断面図。FIG. 5 is a sectional view showing still another embodiment of the cladding tube according to the present invention.
【図６】従来の被覆管材の構成を示す断面図。FIG. 6 is a cross-sectional view showing a configuration of a conventional covering tube material.
２，２Ａ 金属製の管 ３ 防食メッキ層 ４ クロメート処理層 １０ 被覆管材 １１ 導電性樹脂被膜 １２ 導電性材料（カーボン粉末） 2, 2A metal tube 3 anticorrosion plating layer 4 chromate treatment layer 10 coated tube material 11 conductive resin film 12 conductive material (carbon powder)
Claims (6)
材料を分散させてなる導電性樹脂皮膜と、を備えたこと
を特徴とする被覆管材。1. A coated tube material comprising: a metal tube; and a conductive resin film provided on an outer peripheral surface of the tube and having a conductive material dispersed in a resin binder.
ることを特徴とする、請求項１に記載の被覆管材。2. The coated tubing according to claim 1, wherein said conductive material is carbon black.
ッキ層を更に備え、 前記導電性樹脂被膜は、前記防食メッキ層上に設けられ
ていることを特徴とする、請求項１または２に記載の被
覆管材。3. The anticorrosion plating layer provided directly on the outer peripheral surface of the tube, wherein the conductive resin film is provided on the anticorrosion plating layer. 3. The coated tubing according to 2.
キ、若しくは最上層としてＺｎ系メッキの層を含む複層
のメッキからなることを特徴とする、請求項１乃至３の
いずれかに記載の被覆管材。4. The metal pipe is a steel pipe, and the anticorrosion plating layer is a single-layer plating made of Zn-based plating or a multi-layer plating including a Zn-based plating layer as an uppermost layer. The coated tube according to any one of claims 1 to 3, characterized in that:
の間にクロメート処理層が設けられていることを特徴と
する、請求項４に記載の被覆管材。5. The coated tubing according to claim 4, wherein a chromate treatment layer is provided between said Zn-based plating and said conductive resin film.
るための燃料配管に用いられるものであることを特徴と
する、請求項１乃至５のいずれかに記載の被覆管材。6. The cladding tube according to claim 1, wherein the cladding tube is used for a fuel pipe for supplying a fuel to an internal combustion engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11048809A JP2000240855A (en) | 1999-02-25 | 1999-02-25 | Covering pipe material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11048809A JP2000240855A (en) | 1999-02-25 | 1999-02-25 | Covering pipe material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000240855A true JP2000240855A (en) | 2000-09-08 |
Family
ID=12813548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11048809A Pending JP2000240855A (en) | 1999-02-25 | 1999-02-25 | Covering pipe material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000240855A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002174374A (en) * | 2000-12-05 | 2002-06-21 | Tokyo Gas Co Ltd | Lightning resisting tube |
| WO2002099154A1 (en) * | 2001-06-01 | 2002-12-12 | Nippon Steel Corporation | Fuel tank or fuel pipe exhibiting excellent corrosion resistance and method for manufacturing the same |
| WO2005052350A1 (en) * | 2003-11-28 | 2005-06-09 | Sanoh Kogyo Kabushiki Kaisha | Fuel tube and earth structure of vehicle fule piping |
-
1999
- 1999-02-25 JP JP11048809A patent/JP2000240855A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002174374A (en) * | 2000-12-05 | 2002-06-21 | Tokyo Gas Co Ltd | Lightning resisting tube |
| WO2002099154A1 (en) * | 2001-06-01 | 2002-12-12 | Nippon Steel Corporation | Fuel tank or fuel pipe exhibiting excellent corrosion resistance and method for manufacturing the same |
| US6953062B2 (en) | 2001-06-01 | 2005-10-11 | Nippon Steel Corporation | Fuel tank or fuel pipe excellent in corrosion resistance and method for producing the same |
| WO2005052350A1 (en) * | 2003-11-28 | 2005-06-09 | Sanoh Kogyo Kabushiki Kaisha | Fuel tube and earth structure of vehicle fule piping |
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