JP3032071B2 - Insulated rail - Google Patents
Insulated railInfo
- Publication number
- JP3032071B2 JP3032071B2 JP4047795A JP4779592A JP3032071B2 JP 3032071 B2 JP3032071 B2 JP 3032071B2 JP 4047795 A JP4047795 A JP 4047795A JP 4779592 A JP4779592 A JP 4779592A JP 3032071 B2 JP3032071 B2 JP 3032071B2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- rail
- thermal spray
- resin coating
- spray coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Railway Tracks (AREA)
- Prevention Of Electric Corrosion (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鉄道用レール本体に対
して、防食、絶縁などの目的で耐久性の優れた被覆を施
した被覆レールに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coated rail in which a railroad rail body is provided with a coating having excellent durability for the purpose of corrosion prevention, insulation and the like.
【０００２】[0002]
【従来の技術】海洋構造物や埋設鋼管には防食のために
強固な絶縁被覆が施される。一方、鉄道用レールが使用
される環境は通常は大気中であり、さして腐食が進行す
るものではなく、鉄道用レールは被覆のない状態で使用
されている。しかし、例えば地下ルートでは塩分を含ん
だ湧き水等に曝されることがあるため腐食の進行が速
く、又、直流給電路線の踏切などでは、降雨時にレール
が水を介して接地され、電食を生じる傾向にある。いず
れの問題も、樹脂系の塗装被覆によって環境の遮断ない
しは電気絶縁を行えば解決しうると考えられるが、未だ
実用例を見ない。防音を目的とした被覆についても同様
である。2. Description of the Related Art Offshore structures and buried steel pipes are provided with a strong insulating coating for corrosion protection. On the other hand, the environment in which rails for rails are used is usually in the air, and corrosion does not progress much. Rails for rails are used without coating. However, for example, corrosion may occur rapidly on the underground route due to exposure to salty spring water, etc.In addition, at railroad crossings on DC power supply lines, rails are grounded via water during rainfall, causing Tends to occur. It is considered that any of these problems can be solved if the environment is shielded or electrically insulated by coating with a resin-based coating, but no practical examples have been found yet. The same applies to the coating for soundproofing.
【０００３】この理由は、レールに樹脂系の塗装被覆を
適用する場合、車輪に擦過される使用形態に適合するよ
う、被覆は頭部の上面及び側面には施しえないことと関
係している。すなわち、レールに樹脂系の塗装被覆を施
す場合、図４に示すように、レール本体１の頭部１ａの
上面及び側面を除いた部位に樹脂被覆２を形成すること
となるため、樹脂被覆２はレール全周にエンドレスに形
成することができず、レール本体１の長手方向に延びる
端縁２ａが必ず存在することになる。鋼管の場合には樹
脂被覆をエンドレスにできるので、樹脂被覆の環境遮断
能と被覆自体の耐久性が優れたものであれば被覆系は長
年に亘って耐久し、この間鋼管は防食状態に維持され
る。しかしながら、鋼材で形成されたレール本体１の表
面に形成されている被覆２に端縁２ａが存在する場合、
図５に拡大して示すように、環境因子が鋼材であるレー
ル本体１と被覆２との界面に直接作用して、被覆下腐食
３が奥に向かって進展して行き、被覆２とレール本体１
との間の接着劣化が進む。このため、樹脂被覆の寿命は
大幅に短縮されることとなる。[0003] The reason for this is that when a resin-based coating is applied to the rails, it cannot be applied to the top and side surfaces of the head, so as to be compatible with the use form in which the wheels are rubbed. . That is, when a resin coating is applied to the rail, as shown in FIG. 4, the resin coating 2 is formed on the rail body 1 except for the top and side surfaces of the head 1a. Cannot be formed endlessly on the entire circumference of the rail, and the edge 2a extending in the longitudinal direction of the rail body 1 always exists. In the case of steel pipes, the resin coating can be made endless, so the coating system can be durable for many years if the environmental protection of the resin coating and the durability of the coating itself are excellent, and the steel pipe is maintained in a corrosion-resistant state during this time. You. However, when the edge 2a exists in the coating 2 formed on the surface of the rail body 1 formed of steel,
As shown in an enlarged view in FIG. 5, the environmental factor directly acts on the interface between the steel rail body 1 and the coating 2, and the under-coating corrosion 3 progresses toward the back, and the coating 2 and the rail main body. 1
And the adhesive deterioration between the two proceeds. For this reason, the life of the resin coating is greatly reduced.
【０００４】レールの場合、被覆端縁２ａがレールの長
手方向に延びているので、鋼管被覆の終端部のように、
テープ巻きなどによって信頼性高く封止することも困難
である。また、損傷部の補修は極めて手数を要するもの
である上、損傷は腐食域以上に進展することもある。以
上のように、被覆レールは、端縁の存在による耐久性の
問題とこれに対する改善策の欠如が実用化を阻害してい
たものと思われる。[0004] In the case of a rail, the coating edge 2a extends in the longitudinal direction of the rail.
It is also difficult to seal with high reliability by tape winding or the like. In addition, repairing a damaged portion is extremely time-consuming, and the damage may extend beyond the corrosion zone. As described above, it is considered that the problem of durability of the coated rail due to the presence of the edge and the lack of a remedy for the problem hindered practical application.
【０００５】[0005]
【発明が解決しようとする課題】本発明はかかる従来の
問題点に鑑みてなされたもので、レール本体に樹脂系の
被覆を形成すると共に、その被覆の端縁部分に、その端
縁から進行する被覆下腐食を防止する手段を施すことに
より、樹脂被覆の寿命を長くすることの可能な被覆レー
ルを提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and a resin-based coating is formed on a rail main body, and an edge portion of the coating is advanced from the edge. It is an object of the present invention to provide a coated rail capable of extending the service life of a resin coating by providing a means for preventing under-coating corrosion.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、鋼材表面
に設けている樹脂被覆の端縁から進行する被覆下腐食を
防止すべく、鋭意検討の結果、この被覆下腐食は環境中
の酸素、水、塩素イオンなどが鋼材に作用して起こる腐
食がその主因であり、樹脂被覆の端縁部分の鋼材表面に
アルミニウム及び／又は亜鉛の溶射被覆を、樹脂被覆の
端縁に接触するように設けることにより、環境因子が鋼
材と樹脂被覆との界面へ侵入することを抑制し、しかも
電気化学的には鋼材表面にわずかな陰極電位に与え、こ
れによって被覆下腐食を防止しうることを見出し、本発
明を達成した。Means for Solving the Problems The inventors of the present invention have conducted intensive studies to prevent corrosion under the coating which progresses from the edge of the resin coating provided on the surface of the steel material. The main cause is corrosion caused by the action of oxygen, water, chlorine ions, etc. on the steel material. The sprayed coating of aluminum and / or zinc is applied to the steel surface at the edge of the resin coating so that the steel coating contacts the edge of the resin coating. To prevent environmental factors from invading the interface between the steel material and the resin coating, and to electrochemically apply a slight cathode potential to the steel material surface, thereby preventing corrosion under the coating. Heading, the present invention has been achieved.
【０００７】すなわち、本発明は、鉄道用レール本体に
対して、腹部上端付近より下方の部位には底面を含む全
外周面に樹脂被覆を施し、且つ、該樹脂被覆の端縁の部
分に、アルミニウム及び亜鉛の少なくとも一方を主成分
とする溶射被覆を、上記樹脂被覆の端縁と接触するよう
に施して成る被覆レールを要旨とする。以下、図面を参
照して本発明を更に詳細に説明する。That is, according to the present invention, a resin coating is applied to the entire outer peripheral surface including the bottom surface of a portion below the upper end of the abdomen with respect to the railroad rail body, and an edge portion of the resin coating is provided. The gist of the present invention is a coated rail formed by applying a thermal spray coating mainly containing at least one of aluminum and zinc so as to be in contact with an edge of the resin coating. Hereinafter, the present invention will be described in more detail with reference to the drawings.
【０００８】図１において、１は鉄道用レール本体（以
下、単にレール本体という）であり、頭部１ａと、腹部
（ウェブ）１ｂと、底部１ｃとからなる。本発明では、
このレール本体１に対して、腹部上端付近より下方の部
位の、底面を含む全外周面に樹脂被覆２を施している。
従って、この樹脂被覆２には、上方部分にレール本体１
の長手方向に延びる端縁２ａが形成されている。この端
縁２ａの位置は、図示位置に限らず、レール本体１の腹
部１ｂ上端よりも更に上の位置（従って頭部１ａの下面
位置）であってもよいし、図示位置よりも更に下方であ
ってもよい。樹脂被覆２はレール本体の防食、絶縁等の
ために設けられるものであり、その材質は特に制限され
るものでなく、その用途に応じて適宜定めればよい。例
えば、強靱性の上から好適なものを挙げれば、粉体塗装
による飽和ポリエステル、ナイロン、エポキシなど、或
いは液状塗装によるガラスフレーク入り不飽和ポリエス
テル、エポキシなどである。膜厚は、遮断性を確保する
ために２００μ以上が望ましく、締結などとの取り合い
の関係から１０００μ程度までに留めるのがよい。樹脂
被覆２はレール本体１に対して接着して設けられるもの
であり、通常は塗装により形成されるが、それ以外の方
法で形成してもよい。In FIG. 1, reference numeral 1 denotes a railway rail main body (hereinafter, simply referred to as a rail main body), which includes a head 1a, an abdomen (web) 1b, and a bottom 1c. In the present invention,
The resin coating 2 is applied to the entire outer peripheral surface of the rail main body 1 including the bottom surface at a position below the upper end of the abdomen.
Therefore, this resin coating 2 has the rail body 1
The edge 2a extending in the longitudinal direction is formed. The position of the edge 2a is not limited to the illustrated position, but may be a position further above the upper end of the abdomen 1b of the rail main body 1 (therefore, the lower surface position of the head 1a), or may be further below the illustrated position. There may be. The resin coating 2 is provided for corrosion prevention, insulation, and the like of the rail main body, and the material thereof is not particularly limited, and may be appropriately determined according to its use. For example, preferred from the viewpoint of toughness are saturated polyester, nylon, epoxy and the like by powder coating, and unsaturated polyester and epoxy with glass flake by liquid coating. The film thickness is desirably 200 μm or more in order to secure the blocking property, and is preferably limited to about 1000 μm in consideration of the connection with fastening or the like. The resin coating 2 is provided to be adhered to the rail main body 1 and is usually formed by painting, but may be formed by other methods.
【０００９】次に、本発明では、レール本体１の樹脂被
覆２の上方の端縁２ａの部分に、アルミニウム及び亜鉛
の少なくとも一方を主成分とする溶射被覆５を、樹脂被
覆の端縁２ａと接触するように形成することをも特徴と
する。この溶射被覆５は、レール本体１と樹脂被覆２の
端縁２ａとの界面に、環境中の酸素、水、塩素イオン等
が侵入するのを抑制すると共に、その端縁２ａの下のレ
ール本体１の自然電位をわずかに陰極側とすることによ
り電気化学的に防食するためのものであり、この点から
は、図２（ａ）に示す溶射被覆５のように、樹脂被覆２
の端縁２ａの近傍のみに設けてもよい。しかしながら、
溶射被覆５は鋼材でできたレール本体１よりも耐食性が
あり、また、施工面積を多少多くしても、施工手数、材
料原単位共に大きな差異がないので、図１の溶射被覆５
のように、頭部１ａの下面（いわゆるアゴ下）全面に施
すのが防食上の得策である。Next, in the present invention, a thermal spray coating 5 containing at least one of aluminum and zinc as a main component is formed on the upper edge 2a of the resin coating 2 of the rail body 1 with the edge 2a of the resin coating. It is also characterized in that it is formed so as to make contact. The thermal spray coating 5 suppresses oxygen, water, chlorine ions, and the like in the environment from entering the interface between the rail main body 1 and the edge 2a of the resin coating 2 and at the same time, the rail main body below the edge 2a. 2 is intended to electrochemically prevent corrosion by setting the natural potential of the negative electrode 1 slightly to the cathode side. From this point, the resin coating 2 is used as in the thermal spray coating 5 shown in FIG.
May be provided only near the edge 2a. However,
The thermal spray coating 5 is more resistant to corrosion than the rail body 1 made of steel, and even if the construction area is slightly increased, there is no significant difference in the number of work steps and material unit consumption.
It is a good measure in terms of anti-corrosion to apply to the entire lower surface of the head 1a (so-called lower jaw) as shown in FIG.
【００１０】本発明で使用する溶射被覆５の材質は、上
記したように、アルミニウム及び亜鉛の少なくとも一方
を主成分とする。この理由は、レール本体１に溶射被覆
５を形成することによってレール本体１にもたらされる
自然電位が鋼材の防食に奏効し始める−０．７Ｖ（対Ｓ
ＣＥ）より概ね卑であり、一方、鋼材上の被覆の密着を
鋼材表面の還元作用によって損ない始める−１．０Ｖ
（対ＳＣＥ）より卑とはなりにくいことに基づく。溶射
被覆５の膜厚は厚い方が防食寿命は長いが、堅牢性、コ
ストパフォーマンスを考慮すれば、用途に応じて、１０
０〜２００μ前後が好適である。溶射被覆５には、クリ
アー樹脂塗料などによる封孔処理を施した方が、溶射被
覆自体の腐食消耗或いは環境因子の樹脂被覆端縁・レー
ル本体界面への到達を抑制する上で有利である。また、
この観点から、アルミニウム相と亜鉛相が混在した擬合
金からなる溶射被覆が最も推奨される。この被覆はアー
ク溶射機に適用する線材を、一方はアルミニウム、他方
は亜鉛として低い温度条件で溶射することにより生成す
るものであって、アルミニウムと入り組んで存在する亜
鉛相が先行溶出する結果、その腐食生成物が溶射被覆を
自己封孔し、寿命、遮断効果の両面に優れたものとなっ
ている。As described above, the material of the thermal spray coating 5 used in the present invention contains at least one of aluminum and zinc as a main component. The reason is that the formation of the thermal spray coating 5 on the rail main body 1 causes the natural potential brought to the rail main body 1 to start to be effective in preventing corrosion of the steel material by -0.7 V (vs. S).
CE) is generally lower, while -1.0 V begins to impair the adhesion of the coating on the steel due to the reducing action of the steel surface
(Vs. SCE) based on being less vulnerable. The thicker the thermal spray coating 5 is, the longer the anti-corrosion life is. However, considering the robustness and cost performance, 10
A range of about 0 to 200 μ is preferable. It is more advantageous to apply a sealing treatment to the thermal spray coating 5 with a clear resin paint in order to suppress corrosion consumption of the thermal spray coating itself or environmental factors from reaching the resin coating edge / rail interface. Also,
From this viewpoint, a thermal spray coating made of a pseudo alloy in which an aluminum phase and a zinc phase are mixed is most recommended. This coating is formed by spraying a wire rod to be applied to an arc spraying machine at a low temperature condition as aluminum on one side and zinc on the other side. Corrosion products self-enclose the thermal spray coating, which is excellent in both life and blocking effect.
【００１１】上記したように、溶射被覆５は樹脂被覆２
の端縁２ａに接触させて設け、それによって、レール本
体１と樹脂被覆２の端縁２ａとの界面に、酸素、水、塩
素イオン等の環境因子が侵入するのを抑制する作用を有
する。この溶射被覆５と樹脂被覆端縁２ａとの接触部
は、図１、図２（ａ）に示すように、単に突き合わせた
状態としてもよいが、環境因子の侵入を確実に抑制する
上からは、両被覆の接触の度合いが深い方が良く、図２
（ｂ）のように樹脂被覆２の端縁２ａに数ｍｍオーバー
ラップさせて溶射被覆５を施工するのが好ましい。この
場合、樹脂被覆端縁２ａの被溶射面には溶射被覆５の足
掛りとなる粗面化が必要である。しかし、通常の粗面化
手段であるサンド或いはグリットブラスチングの適用
は、樹脂被覆の減耗、粗度仕様の適中性、対象部位や面
積の点で好適とは言えない。そこで、樹脂系基剤に適宜
粒度の骨材を配合してなる粗面形成塗料の薄膜を樹脂被
覆２の上に適用して粗面化し、その上に溶射を施すこと
によって溶射被覆５を形成することが好ましい。粗面形
成塗料としては、ブラスノン＃２１（大日本塗料株式会
社製）を例示できる。粗面形成塗料の機能は、鋼材面上
でも奏効するものであることから、該塗料の適用対象を
レール本体表面も含めた被溶射下地全般とすることが好
ましい。As described above, the thermal spray coating 5 is made of the resin coating 2
And has an action of suppressing the entry of environmental factors such as oxygen, water, and chloride ions into the interface between the rail main body 1 and the edge 2a of the resin coating 2. The contact portion between the thermal spray coating 5 and the resin coating edge 2a may be simply abutted as shown in FIGS. 1 and 2 (a), but from the viewpoint of reliably suppressing the invasion of environmental factors. The better the degree of contact between the two coatings, the better.
It is preferable to apply the thermal spray coating 5 by overlapping the edge 2a of the resin coating 2 by several mm as shown in FIG. In this case, the surface to be sprayed on the resin coating edge 2a needs to be roughened so that the spray coating 5 can be used as a foothold. However, application of sand or grit blasting, which is a usual roughening means, is not suitable in terms of wear of the resin coating, neutrality of the roughness specification, target portion and area. Therefore, a thin film of a rough surface forming paint obtained by blending an appropriate particle size aggregate with a resin base is applied on the resin coating 2 to roughen the surface, and the thermal spray coating is applied thereon to form the thermal spray coating 5. Is preferred. Examples of the rough surface forming paint include Brasnon # 21 (manufactured by Dainippon Paint Co., Ltd.). Since the function of the rough surface forming paint is effective even on the steel material surface, it is preferable to apply the paint to the entire sprayed base including the rail body surface.
【００１２】溶射被覆５と樹脂被覆２とをオーバーラッ
プさせて設ける場合、溶射被覆５を必ずしも上側とする
必要はなく、図２（ｃ）に示すように、溶射被覆５を先
に形成しておき、その上に樹脂被覆２を形成してもよ
い。なお、この場合には、樹脂被覆２を溶射被覆５の全
面に形成してもよいが、後述するように、溶射被覆５は
自身が消耗するものであるので、全面を樹脂被覆で覆わ
ず、露出面を設けておくことが好ましい。そうすれば、
その露出面から消耗し、樹脂被覆との界面の溶射被覆が
消耗することがない。When the thermal spray coating 5 and the resin coating 2 are provided so as to overlap each other, the thermal spray coating 5 does not necessarily have to be on the upper side, and as shown in FIG. 2C, the thermal spray coating 5 is formed first. And the resin coating 2 may be formed thereon. In this case, the resin coating 2 may be formed on the entire surface of the thermal spray coating 5, but as described below, the thermal spray coating 5 itself is consumed, so that the entire surface is not covered with the resin coating. It is preferable to provide an exposed surface. that way,
The thermal spray coating on the interface with the resin coating does not wear out from the exposed surface.
【００１３】レール本体１の長手方向に関しては、防食
或いは絶縁のための必要な範囲に樹脂被覆２及び溶射被
覆５を施せばよい。しかしながら、実用上、長手方向の
部分被覆にはあまり経済的メリットがないので、標準的
には全長に施すこととなる。但し、レール本体端部の継
手部には通電或いは継目板との擦過といった諸事情によ
り、樹脂被覆の適用が不都合ないしは不利となる場合が
多い。よって、このような状況への対策として、レール
本体端部の継目板に接する部位には樹脂被覆を施さず、
該部には頭部下面と同様に、樹脂被覆の長手方向端縁に
接触させて溶射被覆を施すことが好ましい。この場合
も、溶射被覆の適用をレール本体の端面にまで延長し、
加えて継目板にも施した方が溶射被覆の消耗が少ない。
なお、継手部も含めたレールの全長に樹脂被覆を施す場
合には、用途、目的に応じて、端面には樹脂被覆、溶射
被覆のいずれかを施しておくのがよい。In the longitudinal direction of the rail main body 1, a resin coating 2 and a thermal spray coating 5 may be applied to a necessary range for corrosion prevention or insulation. However, in practice, the partial coating in the longitudinal direction has little economic merit, so that it is typically applied to the entire length. However, it is often the case that the application of the resin coating is inconvenient or disadvantageous due to various conditions such as energization or rubbing with the joint plate at the joint portion at the end of the rail body. Therefore, as a countermeasure against this situation, do not apply resin coating to the part of the rail body end that is in contact with the joint plate,
As with the lower surface of the head, it is preferable that the thermal spray coating is applied to the portion in contact with the longitudinal edge of the resin coating. In this case also, the application of the thermal spray coating is extended to the end face of the rail body,
In addition, the thermal spray coating is less worn when applied to the seam plate.
When resin coating is applied to the entire length of the rail including the joint portion, it is preferable to apply either resin coating or thermal spray coating to the end face according to the application and purpose.
【００１４】[0014]
【作用】本発明の被覆レールにおいて、腹部上端付近よ
り下方に施した樹脂被覆２は、所期目的の遮断防食、電
気絶縁などの用をなす。一方、この樹脂被覆２の端縁２
ａに沿って施されたアルミニウム及び／又は亜鉛を主成
分とする溶射被覆５は、その端縁２ａと接触したレール
本体表面を電気化学的に防食し、しかも、その端縁２ａ
とレール本体との界面への酸素、水、塩素等の侵入を抑
制する。これにより、樹脂被覆２の端縁２ａとレール本
体表面（鋼材表面）との界面における腐食（被覆下腐
食）の進行が防止される。In the coated rail of the present invention, the resin coating 2 applied below the upper end of the abdomen serves as a desired purpose such as cut-off corrosion prevention and electrical insulation. On the other hand, the edge 2 of the resin coating 2
The spray coating 5 mainly composed of aluminum and / or zinc applied along the edge a electrochemically protects the surface of the rail body in contact with the edge 2a, and furthermore, the edge 2a
Of oxygen, water, chlorine and the like into the interface between the rail and the rail body. This prevents corrosion (corrosion under the coating) from progressing at the interface between the edge 2a of the resin coating 2 and the rail body surface (steel material surface).
【００１５】次に、溶射被覆５を形成したことにより、
樹脂被覆２と溶射被覆５との間に、一端を外界に露出さ
せた界面が形成されることとなる。しかしながら、鋼材
と異なり、アルミニウム及び／又は亜鉛を主成分とする
溶射被覆と樹脂被覆との間の界面では、界面腐食が生じ
にくい。また、溶射被覆５とレール本体１（鋼材）との
間にも一端を外界に露出させた界面が形成されるが、溶
射被覆５は樹脂被覆と異なり電気絶縁の機能は有しない
一方、被覆下腐食の懸念がない。このため、溶射被覆５
は長期間に渡って、樹脂被覆２の端縁２ａとレール本体
表面との界面を環境因子から保護することができる。以
上の結果、樹脂被覆２は、被覆自体の環境遮断能と耐久
性を反映したエンドレス被覆とほぼ同等に耐久すること
となり、長期間に渡って、防食、電気絶縁等の機能を発
揮することができる。Next, by forming the thermal spray coating 5,
An interface having one end exposed to the outside is formed between the resin coating 2 and the thermal spray coating 5. However, unlike steel, interfacial corrosion hardly occurs at the interface between the thermal spray coating mainly composed of aluminum and / or zinc and the resin coating. An interface having one end exposed to the outside is also formed between the thermal spray coating 5 and the rail main body 1 (steel material). However, unlike the resin coating, the thermal spray coating 5 does not have an electrical insulation function, while the thermal spray coating 5 does not have an electrical insulation function. No corrosion concerns. Therefore, the thermal spray coating 5
Can protect the interface between the edge 2a of the resin coating 2 and the surface of the rail body from environmental factors over a long period of time. As a result, the resin coating 2 is almost as durable as the endless coating that reflects the environmental barrier ability and durability of the coating itself, and can exhibit functions such as anticorrosion and electrical insulation over a long period of time. it can.
【００１６】アルミニウム及び／又は亜鉛を主成分とす
る溶射被覆５は鋼材であるレール本体１をわずかに陰極
側とすることにより、樹脂被覆の下面における腐食を抑
制し、また、適度の陰極防食機能により腐食疲労割れ抑
制効果もある。この時、この溶射被覆５は被覆自体が腐
食消耗する性向を有する。しかしながら、その消耗は、
図３に符号７で示すように、溶射被覆５の表層或いは樹
脂被覆２と接しない側の端縁が徐々に消耗していく形で
あるため、消耗が進んでも機能の低下は生じない。ま
た、消耗が進んだ段階で補充施工する方式により容易に
復元できる。なお、溶射被覆５に封孔処理や自己封孔効
果を加味しておけば、その消耗はきわめて緩慢となり好
ましい。The thermal spray coating 5 containing aluminum and / or zinc as a main component suppresses corrosion on the lower surface of the resin coating by slightly setting the rail main body 1 made of steel on the cathode side, and has an appropriate cathodic protection function. This also has the effect of suppressing corrosion fatigue cracking. At this time, the thermal spray coating 5 has a tendency to cause corrosion of the coating itself. However, its exhaustion
As shown by reference numeral 7 in FIG. 3, the surface layer of the thermal spray coating 5 or the edge not in contact with the resin coating 2 is gradually consumed, so that the function does not decrease even if the consumption is advanced. In addition, it can be easily restored by a method of replenishing construction at the stage when wear has progressed. In addition, if a sealing treatment or a self-sealing effect is added to the thermal spray coating 5, its consumption is extremely slow, which is preferable.
【００１７】[0017]
【実施例】ＪＩＳ Ｅ１１０１ ５０ｋｇＮ レール
（レール本体）を１ｍの長さに切り出し、これに下記仕
様の被覆を施工し、供試体Ａ、Ｂ（本発明の実施例）、
Ａ′、Ｂ′（比較例）を作成した。EXAMPLE A JIS E1101 50 kgN rail (rail main body) was cut out to a length of 1 m, and a coating having the following specifications was applied thereto, and specimens A and B (Examples of the present invention)
A 'and B' (comparative examples) were prepared.
【００１８】供試体Ａ（実施例１） レール本体のアゴ下以下の全面をブラスチングにより除
錆した後、粗面形成塗料ブラスノン＃２１（大日本塗料
株式会社製）を約３０ｇ／ｍ2 あて塗布した。次にレー
ル本体の両端部各１００ｍｍ長さ、及び端面を除く腹部
上端以下の部位にガラスフレーク入り不飽和ポリエステ
ル塗料レジライニング＃１０Ｈ（大日本塗料株式会社
製）を所定のプライマーを含めて３５０〜４５０μの塗
膜となるように塗装した。また、塗装を行わなかったア
ゴ下〜腹部上端部、両端部のアゴ下及び端面には約３０
％アルミニウム・亜鉛擬合金の溶射被膜を１００〜１５
０μあて、常温アーク溶射機（パンメタルエンジニアリ
ング株式会社製）により施工し、図１に示すような、樹
脂被覆２と溶射被覆５がほぼ突き合わされた形の複合被
覆を有する被覆レールとした。Specimen A (Example 1) After the entire surface below the chin of the rail body was rust-removed by blasting, a rough surface forming paint Brasnon # 21 (manufactured by Dainippon Paint Co., Ltd.) was applied at about 30 g / m 2. did. Next, a resin lining # 10H (made by Dai Nippon Paint Co., Ltd.) containing glass flakes including a predetermined primer is applied to a portion of the rail main body at a length of 100 mm each at both ends and at the lower end of the abdomen excluding the end face, including a predetermined primer. Coating was performed so that a 450 μm coating film was obtained. In addition, the lower jaw, the upper end of the abdomen, the lower jaw and the end face of both ends of the
% Aluminum / zinc pseudo-alloy thermal spray coating 100 ~ 15
The coating rail was applied with a normal temperature arc spraying machine (manufactured by Panmetal Engineering Co., Ltd.) to 0 μm to obtain a coated rail having a composite coating in which the resin coating 2 and the thermal spray coating 5 were almost butted as shown in FIG.
【００１９】供試体Ａ′（比較例１） 上記供試体Ａにおいて、アゴ下〜塗膜端部まで等の溶射
被膜を施工しなかったものを供試体Ａ′とした。Specimen A '(Comparative Example 1) Specimen A' in which no thermal spray coating was applied from below the chin to the end of the coating film in Specimen A.
【００２０】供試体Ｂ（実施例２） 上記供試体Ａにおけるブラスチングを溶射に適する５０
μＲmax 前後になるよう施工し、不飽和ポリエステルに
代えてナイロン１２を所定プライマーを塗布した後、粉
体塗装法により、腹部以下の部位に約５００〜７００μ
あて施工した。次に該樹脂被覆の上端部約５ｍｍ幅の部
分に前記粗面形成塗料を塗布した後、前記溶射をアゴ下
部からこの領域まで及び両端部等に施工し、図２（ｂ）
に示すような、樹脂被覆２と溶射被覆５がやや重ね合わ
された形の複合被膜を有する被覆レールとした。Specimen B (Example 2) The blasting of the specimen A is suitable for thermal spraying.
.mu.r max and construction so as to be back and forth after the nylon 12 was applied a predetermined primer in place of the unsaturated polyester, the powder coating method, about the following site abdomen 500~700μ
It was applied. Next, after applying the rough surface forming paint to a portion having a width of about 5 mm at the upper end of the resin coating, the thermal spraying is applied from the lower part of the jaw to this area and to both ends, and FIG.
As shown in the figure, a coated rail having a composite coating in a form in which the resin coating 2 and the thermal spray coating 5 are slightly overlapped was obtained.
【００２１】供試体Ｂ′（比較例２） 上記供試体Ｂにおいて、アゴ下〜塗膜端部まで等の溶射
被膜を施工しなかったものを供試体Ｂ′とした。Specimen B '(Comparative Example 2) Specimen B' was prepared by applying no thermal spray coating from below the chin to the end of the coating film.
【００２２】以上の供試体に塩水噴霧試験を８０００時
間行い、被覆端部から塗膜下腐食、剥離の調査を行っ
た。その結果を表１に示す。表１から明らかなように、
本発明の実施例になる供試体Ａ、Ｂにはいずれも樹脂被
膜の端部に剥離、さびの発生はなかったが、比較例によ
る供試体には、さび、ふくれ、剥離等が見られた。The above test pieces were subjected to a salt spray test for 8000 hours, and the undercoating corrosion and peeling were examined from the coated end. Table 1 shows the results. As is clear from Table 1,
Specimens A and B according to the examples of the present invention did not peel or rust at the end of the resin film, but rust, blistering, peeling, etc. were observed in the specimen according to the comparative example. .
【００２３】[0023]
【表１】 [Table 1]
【００２４】[0024]
【発明の効果】以上のように、本発明はエンドレスな被
覆を施すことのできない鉄道用レールに対して樹脂被覆
と金属溶射被覆を複合した被覆を適用することにより、
樹脂被覆の端縁からの劣化に係わる被覆レールの問題点
を解消したものである。本発明により防食被覆レール、
漏電防止被覆レールなどがようやく実用できることとな
った。As described above, according to the present invention, a composite coating of a resin coating and a metal spray coating is applied to a railway rail to which an endless coating cannot be applied.
An object of the present invention is to solve the problem of the coated rail relating to deterioration from the edge of the resin coating. Anticorrosion coated rail according to the present invention,
Finally, it has become possible to practically use earth leakage prevention coated rails.
【図１】本発明の一実施例による被覆レールの概略断面
図FIG. 1 is a schematic cross-sectional view of a covered rail according to one embodiment of the present invention.
【図２】（ａ）、（ｂ）、（ｃ）はそれぞれ、本発明の
他の実施例による被覆レールの一部を示す概略断面図FIGS. 2 (a), (b) and (c) are schematic cross-sectional views each showing a part of a covered rail according to another embodiment of the present invention.
【図３】図１の実施例による被覆レールにおいて、溶射
被覆の消耗状態を説明する要部の拡大断面図FIG. 3 is an enlarged cross-sectional view of a main part of the coated rail according to the embodiment shown in FIG.
【図４】レール本体に樹脂系の塗料を塗布して形成した
被覆レールを示す概略断面図FIG. 4 is a schematic sectional view showing a covered rail formed by applying a resin-based paint to the rail body.
【図５】図４の被覆レールにおいて、被覆下腐食を説明
する要部の拡大断面図FIG. 5 is an enlarged cross-sectional view of a main part of the coated rail in FIG. 4, illustrating corrosion under the coating;
１ レール本体 １ａ 頭部 １ｂ 腹部 １ｃ 底部 ２ 樹脂被覆 ２ａ 端縁 ３ 被覆下腐食 ５ 溶射被覆 DESCRIPTION OF SYMBOLS 1 Rail main body 1a Head 1b Abdomen 1c Bottom 2 Resin coating 2a Edge 3 Under-corrosion 5 Thermal spray coating
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) E01B 5/02 E01B 19/00 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) E01B 5/02 E01B 19/00
Claims (5)
近より下方の部位には底面を含む全外周面に樹脂被覆を
施し、且つ、該樹脂被覆の端縁の部分に、アルミニウム
及び亜鉛の少なくとも一方を主成分とする溶射被覆を、
上記樹脂被覆の端縁に接触するように施して成る被覆レ
ール。1. A resin coating is applied to an entire outer peripheral surface including a bottom surface of a portion below an upper end of an abdominal portion of a railway rail body, and aluminum and zinc are applied to an edge portion of the resin coating. Thermal spray coating with at least one as the main component,
A coated rail formed so as to contact an edge of the resin coating.
在した擬合金であることを特徴とする請求項１記載の被
覆レール。2. The coated rail according to claim 1, wherein the thermal spray coating is a pseudo alloy in which an aluminum phase and a zinc phase are mixed.
して設けられていることを特徴とする請求項１又は２に
記載の被覆レール。3. The coated rail according to claim 1, wherein the thermal spray coating and the resin coating are provided so as to overlap with each other.
基剤とする粗面形成塗装の薄膜を介在させていることを
特徴とする請求項１から３のいずれか１項に記載の被覆
レール。4. The method according to claim 1, wherein a thin film formed of a resin-based roughened surface is interposed between the thermal spray coating and the substrate to be thermal sprayed. Covered rail.
びレール本体端面には樹脂被覆を適用せず、且つ、アル
ミニウム及び亜鉛の少なくとも一方を主成分とする溶射
被覆を、樹脂被覆の端縁と接触するように施したことを
特徴とする請求項１から４のいずれか１項に記載の被覆
レール。5. A resin coating is not applied to a portion of the rail main body end portion which is in contact with the joint plate and the rail main body end surface, and a thermal spray coating mainly containing at least one of aluminum and zinc is applied to the edge of the resin coating. The coated rail according to any one of claims 1 to 4, wherein the coated rail is provided so as to contact with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4047795A JP3032071B2 (en) | 1992-02-05 | 1992-02-05 | Insulated rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4047795A JP3032071B2 (en) | 1992-02-05 | 1992-02-05 | Insulated rail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05214701A JPH05214701A (en) | 1993-08-24 |
| JP3032071B2 true JP3032071B2 (en) | 2000-04-10 |
Family
ID=12785309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4047795A Expired - Fee Related JP3032071B2 (en) | 1992-02-05 | 1992-02-05 | Insulated rail |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3032071B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10313957A1 (en) * | 2002-06-27 | 2004-01-22 | Bwg Gmbh & Co. Kg | Method for coating a surface of a track component and track component |
| GB0220918D0 (en) * | 2002-09-10 | 2002-10-23 | Wolfendale Robin | Assembled embedded rail |
| JP5725497B2 (en) * | 2010-09-28 | 2015-05-27 | 西日本旅客鉄道株式会社 | Rail for rail |
| JP6161185B2 (en) * | 2013-11-28 | 2017-07-12 | 公益財団法人鉄道総合技術研究所 | Rail soundproof structure |
| JP6140062B2 (en) * | 2013-11-28 | 2017-05-31 | 公益財団法人鉄道総合技術研究所 | Rail soundproof structure |
| CN105274915B (en) * | 2015-11-26 | 2017-07-18 | 洛阳双瑞橡塑科技有限公司 | A kind of method for eliminating rail system stray electrical current |
| DE102016114172A1 (en) * | 2016-08-01 | 2018-02-01 | Edilon Sedra Gmbh | Rail with electrical insulation |
| CN106939534A (en) * | 2017-01-23 | 2017-07-11 | 上海工程技术大学 | A kind of nano ceramic coat insulation rail |
| CN110273332A (en) * | 2019-06-28 | 2019-09-24 | 王玉娇 | A kind of system preventing and treating Stray Current in Urban Rail Transit corrosion impact |
-
1992
- 1992-02-05 JP JP4047795A patent/JP3032071B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05214701A (en) | 1993-08-24 |
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