광대한 철도 시스템 네트워크에서, the junction of two 강철 레일 is not merely a simple “관절” 하지만 안전과 관련된 전략적 위치, 안정, and efficiency of the entire line. The protagonist here is the fishplate – this seemingly unremarkable connecting piece is actually the “생명선” 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.

나. 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/m2): 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, “부식” is a hidden killer. 이때, 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 (국제철도산업표준) or ISO 9001. This is the basic guarantee for the standardization of their production processes.

4. Process Details:

4.1 열처리 공정:

High strength does not come out of thin air. The key lies in quenching and tempering heat treatment (담금질 + high-temperature tempering). This determines whether the fishplate can have both high strength and sufficient toughness, avoiding brittle fractures.

4.2 비파괴 테스트:

Every high-strength fishplate leaving the factory should undergo ultrasonic or magnetic particle testing to ensure there are no internal cracks, 슬래그 함유물, 또는 기타 치명적인 결함. You can request a testing report.

공급자

뤄양포뇨중공업(Luoyang Fonyo Heavy Industries), 주식회사,1998년에 설립된 철도 주조 부품 제조업체입니다. 저희 공장 부지는 72,600㎡입니다., 이상으로 300 직원, 32 기술자, 포함 5 수석 엔지니어, 11 보조 엔지니어, 그리고 16 기술자. 우리의 생산 능력은 30,000 연간 톤. 현재, 우리는 주로 주조물을 생산하고 있습니다, 가공, 기관차 조립 및 조립, 철도 차량, 고속 열차, 광산 장비,풍력,등.
우리는 CRRC에 철도 부품을 공급하고 있습니다.(이상 포함 20 CRRC의 지사 및 자회사),Gemac 엔지니어링 기계,삼니그룹, 중공업,등. 우리의 제품은 러시아로 수출되었습니다, 미국, 독일, 아르헨티나, 일본, 프랑스, 남아프리카,이탈리아와 전 세계의 다른 나라들.