広大な鉄道網の中で, the junction of two スチールレール is not merely a simple “ジョイント” しかし、安全性が懸念される戦略的な場所, 安定性, and efficiency of the entire line. The protagonist here is the fishplate – this seemingly unremarkable connecting piece is actually the “ライフライン” maintaining the continuity of the steel rails. Especially with the increase in train axle loads and speeds, traditional fishplates have become inadequate, making high-strength fishplates an inevitable choice for modern railways.

Steel rail connection plates, also known as railway fishplates or splice plates, are used to connect the ends of two steel rails. High-quality fishplates can effectively reduce the impact force when train wheels pass over the rail joints, making the train’s passage over the rail joints more stable.

私. Scientific Selection – Matching the “Best Partner” for Your Line

Selection is not a simple “match and fit”, but a systematic process. When choosing high-strength fishplates, the following core dimensions must be considered:

1.1. Precise Matching of Steel Rail Technical Parameters: This is the foundation.

Steel rail model (kg/m): This is the first checkpoint. A 60kg/m steel rail must be paired with a 60kg/m fishplate, and a 75kg/m steel rail must be paired with a 75kg/m fishplate. Cross-model mixing is strictly prohibited, as it can lead to insufficient contact area, causing stress to concentrate sharply and result in fishplate or even rail breakage.

1.3 Steel rail material and strength grade:

Is the steel rail you use U75V, U68Av, or a higher-strength wear-resistant rail? The material of high-strength fishplates (such as high-quality medium carbon steel or alloy steel) should match it to ensure that both deform in a coordinated manner under force, avoiding excessive wear on one side due to hardness differences.

2. In-depth analysis of operational conditions: This is the key to determining the performance limit.

2.1 Total weight and axle load:

For heavy-haul lines (such as the Daqin Line), fishplates with higher ultimate strength and better fatigue performance must be selected. They usually adopt more complex structural designs and heat treatment processes to withstand millions or even billions of repeated impacts.

2.2 Maximum line speed:

High-speed passenger lines have extremely high requirements for ride smoothness. Fishplates that can effectively maintain joint smoothness should be preferred. Their own stiffness and elasticity need to be precisely calculated to suppress vibrations at high speeds and ensure passenger comfort.

2.3 Environmental corrosiveness:

In coastal, saline-alkali, or heavily industrial-polluted areas, “腐食” is a hidden killer. 現時点では, anti-corrosion performance should be elevated to an important selection criterion. Ask the supplier if they provide enhanced anti-corrosion treatments such as galvanized layers, Dacromet coatings, or epoxy resin spraying, which can extend the service life of fishplates several times over.

3. Distinguish manufacturer qualifications and processes

Qualification certification:

A reliable manufacturer must have quality management system certifications such as IRIS (International Railway Industry Standard) or ISO 9001. This is the basic guarantee for the standardization of their production processes.

4. Process Details:

4.1 熱処理工程:

高強度は何もないところから生まれるものではありません. 鍵は焼き入れ・焼き戻しの熱処理にあり (急冷 + 高温焼戻し). これにより、フィッシュプレートが高い強度と十分な靭性を両立できるかどうかが決まります。, 脆性破壊の回避.

4.2 非破壊検査:

工場から出荷されるすべての高強度フィッシュプレートは、内部亀裂がないことを確認するために超音波または磁粉試験を受ける必要があります。, スラグ介在物, またはその他の致命的な欠陥. テストレポートをリクエストできます.

サプライヤー

洛陽豊洋重工業株式会社, 株式会社,1998年に設立された鉄道鋳造部品のメーカーです。当社の工場面積は72,600㎡です。, 以上の 300 従業員, 32 技術者, 含む 5 シニアエンジニア, 11 アシスタントエンジニア, そして 16 当社の生産能力は 30,000 年間トン. 現在, 私たちは主に鋳物を生産しています, 機械加工, 機関車の組立て, 鉄道車両, 高速鉄道, 鉱山機械,風力,等.
当社はCRRCに鉄道部品を供給しています。(以上を含む 20 CRRCの支店および子会社),Gemacエンジニアリングマシナリー,サニーグループ, 中信重工業,等. 当社の製品はロシアに輸出されています, 米国, ドイツ, アルゼンチン, 日本, フランス, 南アフリカ,イタリアをはじめとする世界中の国.