JPH05214701A - Coated rail - Google Patents
Coated railInfo
- Publication number
- JPH05214701A JPH05214701A JP4047795A JP4779592A JPH05214701A JP H05214701 A JPH05214701 A JP H05214701A JP 4047795 A JP4047795 A JP 4047795A JP 4779592 A JP4779592 A JP 4779592A JP H05214701 A JPH05214701 A JP H05214701A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- rail
- resin coating
- thermal spray
- resin
- 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.)
- Granted
Links
Abstract
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 rail rail main body is coated with a highly durable material for the purpose of anticorrosion and insulation.
【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 coated with a strong insulating coating to prevent corrosion. On the other hand, the environment in which the rail for rail is used is usually atmospheric air, corrosion does not progress, and the rail for rail is used without being coated. However, for example, in underground routes, it may be exposed to spring water containing salt, so the corrosion progresses quickly.In addition, at railroad crossings on DC power supply lines, the rails are grounded through water during rainfall, which prevents electrolytic corrosion. Tend to occur. It is considered that any of these problems can be solved by shielding the environment or electrically insulating the resin-based paint coating, but no practical examples have been found yet. The same applies to the coating for the purpose of 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。The reason for this is related to the fact that when a resin-based paint coating is applied to the rails, the coating cannot be applied to the top and side surfaces of the head so as to suit the usage pattern in which the wheels are abraded. .. That is, when a resin-based paint coating is applied to the rail, as shown in FIG. 4, the resin coating 2 is formed on a portion of the rail main body 1 excluding the top and side surfaces of the head 1a. Cannot be formed endlessly on the entire circumference of the rail, and the end edge 2a extending in the longitudinal direction of the rail body 1 is necessarily present. In the case of steel pipes, the resin coating can be made endless, so if the resin coating has excellent environmental barrier performance and the durability of the coating itself, the coating system will be durable for many years, during which the steel pipe will be kept in a corrosion resistant state. It However, when the edge 2a is present in the coating 2 formed on the surface of the rail body 1 made of steel,
As shown in an enlarged scale in FIG. 5, environmental factors directly act on the interface between the rail body 1 and the coating 2 which are steel materials, and the under-corrosion corrosion 3 progresses toward the back, and the coating 2 and the rail main body. 1
Deterioration of adhesion between and. Therefore, the life of the resin coating is greatly shortened.
【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。In the case of a rail, since the coating edge 2a extends in the longitudinal direction of the rail, like the end of the steel pipe coating,
It is also difficult to seal with high reliability by winding a tape or the like. Further, repairing a damaged portion is extremely troublesome, and the damage may progress beyond the corroded area. As described above, it is considered that the problem of durability of the coated rail due to the existence of the edge and the lack of improvement measures against the problem hindered its practical use.
【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 problems of the prior art. A resin-based coating is formed on the rail main body, and an edge portion of the coating advances from the edge. It is an object of the present invention to provide a coated rail capable of extending the life of the resin coating by providing a means for preventing under-corrosion under the coating.
【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 made earnest studies to prevent under-corrosion corrosion that progresses from the edge of a resin coating provided on the surface of a steel material. Corrosion caused by the action of oxygen, water, chlorine ions, etc. on the steel material is the main cause, and it is necessary to spray the aluminum and / or zinc spray coating on the surface of the steel material at the edge of the resin coating so that it contacts the edge of the resin coating. It is possible to prevent environmental factors from penetrating into the interface between the steel material and the resin coating, and electrochemically apply a slight cathodic potential to the surface of the steel material, 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, with respect to the rail body for a railroad, a resin coating is applied to the entire outer peripheral surface including the bottom surface at a portion below the vicinity of the upper end of the abdomen, 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 containing at least one of aluminum and zinc as a main component so as to come into contact with the 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 portion 1a, an abdominal portion (web) 1b, and a bottom portion 1c. In the present invention,
A resin coating 2 is applied to the entire outer peripheral surface including the bottom surface of the rail main body 1 below the upper end of the abdomen.
Therefore, the resin coating 2 has a rail body 1 on the upper portion.
Is formed with an edge 2a extending in the longitudinal direction. The position of the end edge 2a is not limited to the position shown in the drawing, and may be a position further above the upper end of the abdomen 1b of the rail body 1 (hence, the lower surface position of the head 1a) or below the illustrated position. It may be. The resin coating 2 is provided to prevent corrosion and insulate the rail body, and its material is not particularly limited, and may be appropriately determined according to its application. For example, preferable examples from the viewpoint of toughness are saturated polyester, nylon, epoxy and the like by powder coating, or unsaturated polyester with glass flakes and epoxy by liquid coating. The film thickness is preferably 200 μm or more in order to secure the blocking property, and it is preferable to keep the film thickness to about 1000 μ in view of the connection with fastening or the like. The resin coating 2 is provided by being adhered to the rail body 1, and is usually formed by painting, but it may be formed by another method.
【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, according to the present invention, a thermal spray coating 5 containing at least one of aluminum and zinc as a main component is provided on the upper edge 2a of the resin coating 2 of the rail body 1 as the edge 2a of the resin coating. It is also characterized in that they are formed in contact with each other. The thermal spray coating 5 suppresses invasion of oxygen, water, chlorine ions and the like in the environment at the interface between the rail body 1 and the edge 2a of the resin coating 2, and also the rail body below the edge 2a. This is for electrochemically preventing corrosion by setting the natural potential of 1 to be slightly on the cathode side. From this point, like the thermal spray coating 5 shown in FIG.
It may be provided only in the vicinity of the edge 2a. However,
The thermal spray coating 5 is more corrosion-resistant than the rail body 1 made of steel, and even if the construction area is slightly increased, there is no great difference in the number of construction steps and the material unit.
As described above, it is a good anticorrosion measure to apply it to the entire lower surface (so-called under the jaw) of the head 1a.
【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。The material of the thermal spray coating 5 used in the present invention contains, as described above, at least one of aluminum and zinc as a main component. The reason for this is that by forming the thermal spray coating 5 on the rail body 1, the self-potential brought to the rail body 1 begins to work effectively for corrosion protection of steel -0.7V (vs. S).
CE) is almost base, while on the other hand, the adhesion of the coating on the steel begins to be impaired by the reducing action of the steel surface -1.0V
It is based on the fact that it is harder to be base than (SCE). Although the thicker the film thickness of the thermal spray coating 5 is, the longer the anticorrosion life is, but considering the robustness and cost performance, it is 10 depending on the application.
About 0 to 200 μ is preferable. It is advantageous to subject the thermal spray coating 5 to a sealing treatment with a clear resin paint or the like in order to prevent corrosion and wear of the thermal spray coating itself or environmental factors from reaching the resin coating edge / rail main body interface. Also,
From this point of view, 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 produced by spraying a wire applied to an arc sprayer as aluminum on the one hand, and zinc on the other hand under low temperature conditions, and as a result of the prior elution of the zinc phase existing intricately with aluminum, Corrosion products self-seal the thermal spray coating, providing excellent life and barrier effects.
【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 the resin coating 2
It is provided in contact with the edge 2a of the rail, thereby having the effect of suppressing the entry of environmental factors such as oxygen, water, and chlorine ions into the interface between the rail 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 simply be in a state of abutting as shown in FIGS. 1 and 2 (a), but from the viewpoint of surely suppressing the invasion of environmental factors. , The deeper 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 in (b). In this case, the surface to be sprayed of the resin coating edge 2a needs to be roughened so that the thermal spray coating 5 can be a foothold. However, the application of sand or grit blasting, which is an ordinary roughening means, is not preferable in terms of wear of the resin coating, suitability of roughness specifications, and target site and area. Therefore, a thin film of a rough surface-forming paint prepared by blending a resin-based material with an aggregate having an appropriate particle size is applied onto the resin coating 2 to roughen the surface, and the thermal spraying is performed on the surface to form the thermal spray coating 5. Preferably. As the rough surface forming paint, Brasson # 21 (manufactured by Dainippon Paint Co., Ltd.) can be exemplified. Since the function of the rough surface forming coating material is effective even on the steel material surface, it is preferable to apply the coating material 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. Alternatively, 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. However, as will be described later, the thermal spray coating 5 itself is consumed, so the entire surface is not covered with the resin coating. It is preferable to provide an exposed surface. that way,
The exposed surface is consumed, and the thermal spray coating at the interface with the resin coating is not consumed.
【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。With respect to the longitudinal direction of the rail body 1, the resin coating 2 and the thermal spray coating 5 may be applied in a necessary range for corrosion prevention or insulation. However, in practice, the partial coating in the longitudinal direction does not have much economic merit, so that it is normally applied over the entire length. However, it is often inconvenient or disadvantageous to apply the resin coating to the joint portion at the end of the rail body due to various circumstances such as energization or abrasion with the joint plate. Therefore, as a countermeasure against such a situation, resin coating is not applied to the portion of the rail main body that is in contact with the joint plate,
Similar to the lower surface of the head, it is preferable to apply thermal spray coating to the portion in contact with the longitudinal edge of the resin coating. In this case as well, the application of thermal spray coating is extended to the end surface of the rail body,
In addition, the thermal spray coating wears less when applied to the seam plate.
When resin coating is applied to the entire length of the rail including the joint portion, either the resin coating or the thermal spray coating may be applied to the end face depending on 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 provided below the vicinity of the upper end of the abdomen is used for the purpose of intended anti-corrosion and electrical insulation. On the other hand, the edge 2 of this resin coating 2
The thermal spray coating 5 containing aluminum and / or zinc as a main component along the line a, electrochemically protects the rail body surface in contact with the edge 2a, and further, the edge 2a
Suppresses the entry of oxygen, water, chlorine, etc. into the interface between the rail and the rail body. This prevents the progress of corrosion (corrosion under coating) 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 with one end exposed to the outside is formed between the resin coating 2 and the thermal spray coating 5. However, unlike steel materials, interfacial corrosion is less likely to occur at the interface between the thermal spray coating mainly containing aluminum and / or zinc and the resin coating. An interface with one end exposed to the outside is also formed between the thermal spray coating 5 and the rail body 1 (steel material), but unlike the resin coating, the thermal spray coating 5 does not have the function of electrical insulation. There is no concern about corrosion. Therefore, the thermal spray coating 5
Over a long period of time, the interface between the edge 2a of the resin coating 2 and the surface of the rail body can be protected from environmental factors. As a result of the above, the resin coating 2 is almost as durable as the endless coating reflecting 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 the corrosion on the lower surface of the resin coating by making the rail body 1 made of steel slightly on the cathode side, and also 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 that the coating itself is corroded and consumed. However, the consumption is
As indicated by reference numeral 7 in FIG. 3, since the edge of the thermal spray coating 5 on the side not contacting the surface layer or the resin coating 2 is gradually worn away, the function is not deteriorated even if the wear proceeds. In addition, it can be easily restored by the method of replenishing construction when it is consumed. If the thermal spray coating 5 is subjected to a sealing treatment or a self-sealing effect, its consumption becomes 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 to this, 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 rusting the entire surface of the rail body below the jaws by blasting, rough surface forming paint Brassnon # 21 (manufactured by Dainippon Paint Co., Ltd.) was applied to about 30 g / m 2. did. Next, each end of the rail body is 100 mm long, and unsaturated polyester paint with glass flake resin relining # 10H (manufactured by Dainippon Paint Co., Ltd.) is included in the region below the upper end of the abdomen excluding the end face, including a predetermined primer. It was applied so that a coating film of 450 μ was formed. In addition, the bottom of the unpainted to the upper part of the abdomen, the bottom of both ends and the end face are about 30
% Aluminum-zinc pseudo alloy spray coating 100 to 15
The coating rail was applied to a 0 μm and was applied by a room temperature arc spraying machine (manufactured by Panmetal Engineering Co., Ltd.) to obtain a coated rail having a composite coating in which the resin coating 2 and the thermal spray coating 5 are substantially 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'having no sprayed coating from under the jaw to the coating film end was designated as 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 in specimen A is suitable for thermal spraying 50
.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 constructed and applied. Next, after applying the rough surface forming paint to a portion having a width of about 5 mm at the upper end portion of the resin coating, the thermal spraying is applied from the lower portion of the jaw to this area and both end portions thereof, and as shown in FIG.
A coated rail having a composite coating in which the resin coating 2 and the thermal spray coating 5 are slightly superposed as shown in FIG.
【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'having no thermal spray coating from under the jaw to the coating film end was designated as Specimen B'.
【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。A salt spray test was carried out for 8000 hours on the above specimens, and the undercoat corrosion and peeling were examined from the coated end. The results are shown in Table 1. As is clear from Table 1,
In each of the specimens A and B according to the examples of the present invention, neither peeling nor rust was generated at the end of the resin coating, but the specimens according to the comparative examples showed rusting, blistering, peeling, or the like. ..
【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, by applying the composite coating of the resin coating and the metal spray coating to the rail for railway which cannot be endlessly coated,
This is to solve the problem of the coated rail which is related to deterioration from the edge of the resin coating. An anticorrosion coated rail according to the invention,
Finally, the leak-proof coated rails can be put to practical use.
【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 sectional view of a coated rail according to an 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2 (a), (b), (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 for explaining the wear state of the thermal spray coating in the coated rail according to the embodiment of 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 cross-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5 is an enlarged cross-sectional view of an essential part for explaining under-corrosion in the coated rail of FIG.
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 1 Rail main body 1a Head 1b Abdomen 1c Bottom 2 Resin coating 2a Edge 3 Corrosion under coating 5 Thermal spray coating
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 railway rail main body is provided with a resin coating on the entire outer peripheral surface including a bottom surface at a portion below the vicinity of the abdomen upper end, and aluminum and zinc are provided on an edge portion of the resin coating. At least one of the thermal spray coating as the main component,
A coated rail formed so as to come into contact with the 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 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. A thin film of a resin-based rough surface forming coating is interposed between the thermal spray coating and the thermal spraying base. Coated rails.
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. The resin coating is not applied to a portion of the rail main body end portion that contacts the joint plate and the rail main body end surface, and a thermal spray coating containing at least one of aluminum and zinc as a main component is applied to the edge of the resin coating. The covered rail according to any one of claims 1 to 4, wherein the covered rail is provided so as to come into contact with the covered rail.
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 true JPH05214701A (en) | 1993-08-24 |
| JP3032071B2 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) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1400628A2 (en) * | 2002-09-10 | 2004-03-24 | Robin Wolfendale | Embedded rail |
| JP2005530928A (en) * | 2002-06-27 | 2005-10-13 | ベー・ヴェー・ゲー・ゲーエムベーハー・ウント・コンパニー・カーゲー | Method for covering the surface of a track part and track part |
| JP2012072565A (en) * | 2010-09-28 | 2012-04-12 | West Japan Railway Co | Railroad rail, rust-proofing processing method therefor, and fastening member |
| JP2015101931A (en) * | 2013-11-28 | 2015-06-04 | 公益財団法人鉄道総合技術研究所 | Soundproof structure of rail |
| JP2015101932A (en) * | 2013-11-28 | 2015-06-04 | 公益財団法人鉄道総合技術研究所 | Soundproof structure of rail |
| CN105274915A (en) * | 2015-11-26 | 2016-01-27 | 洛阳双瑞橡塑科技有限公司 | Method for eliminating track system stray current |
| WO2018024502A1 (en) * | 2016-08-01 | 2018-02-08 | Edilon Sedra Gmbh | Electrically insulated rail |
| WO2018133704A1 (en) * | 2017-01-23 | 2018-07-26 | 上海工程技术大学 | Steel rail insulated by nano ceramic coating |
| 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
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005530928A (en) * | 2002-06-27 | 2005-10-13 | ベー・ヴェー・ゲー・ゲーエムベーハー・ウント・コンパニー・カーゲー | Method for covering the surface of a track part and track part |
| EP1400628A2 (en) * | 2002-09-10 | 2004-03-24 | Robin Wolfendale | Embedded rail |
| EP1400628A3 (en) * | 2002-09-10 | 2004-05-12 | Robin Wolfendale | Embedded rail |
| JP2012072565A (en) * | 2010-09-28 | 2012-04-12 | West Japan Railway Co | Railroad rail, rust-proofing processing method therefor, and fastening member |
| JP2015101931A (en) * | 2013-11-28 | 2015-06-04 | 公益財団法人鉄道総合技術研究所 | Soundproof structure of rail |
| JP2015101932A (en) * | 2013-11-28 | 2015-06-04 | 公益財団法人鉄道総合技術研究所 | Soundproof structure of rail |
| CN105274915A (en) * | 2015-11-26 | 2016-01-27 | 洛阳双瑞橡塑科技有限公司 | Method for eliminating track system stray current |
| 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 |
| WO2018024502A1 (en) * | 2016-08-01 | 2018-02-08 | Edilon Sedra Gmbh | Electrically insulated rail |
| WO2018133704A1 (en) * | 2017-01-23 | 2018-07-26 | 上海工程技术大学 | Steel rail insulated by nano ceramic coating |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3032071B2 (en) | 2000-04-10 |
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