Railway Flanges: Overview, Technical Specs, Features & Applications for Global Rail Systems

Overview of Railway Flanges

Railway flanges are key components in railway track connection systems, used to connect rails, fasten fasteners or connect track equipment (such as turnouts, switches, signal devices, etc.). They achieve rigid or elastic connection of the track structure through a combination of high-strength bolts and gaskets, ensuring the smoothness and safety of train operation and the overall stability of the track system. This product is made of high-quality alloy steel or carbon steel, combined with precision forging, heat treatment and anti-corrosion processes, and is suitable for trunk railways, urban rail transit, heavy-load freight and industrial railways.

Parameters Table of Railway Flanges

Features of Railway Flanges

High strength and durability

• Middle carbon alloy steel (such as 42CrMo) is used and tempered, with a tensile strength of ≥980MPa and a yield strength of ≥785MPa, which meets the long-term service requirements of heavy-duty railways.
• Surface hardness HRC28-32, wear resistance is improved by 40%, and maintenance cycle is extended.

Precision manufacturing and interchangeability

• CNC machining ensures that the flange sealing surface roughness Ra≤3.2μm and the bolt hole position accuracy ≤0.2mm, realizing modular installation and rapid replacement.
• Supports seamless matching with mainstream fastener systems at home and abroad (such as Vossloh, Pandrol).

Corrosion resistance and adaptation to harsh environments

• The thickness of the hot-dip galvanized layer is ≥85μm, and it has passed the neutral salt spray test for 1000 hours without rust, which is suitable for high-corrosion environments such as coastal areas and chemical industrial zones.
• Optional 316L stainless steel material, the ability to resist chloride ion corrosion is increased by 3 times.

Lightweight and energy-saving design

• Reduce the flange thickness through topological optimization (15% weight reduction compared to traditional design), reducing transportation and installation costs

Core functions of Flanges

Rail rigid connection
Used to fix rail joints, turnout switches or signal equipment bases to ensure the stability of rail geometry and reduce dynamic displacement when trains pass.
Elastic vibration reduction function
With rubber gaskets or spring washers, elastic rail connection is achieved, wheel-rail impact force is reduced, and the life of rails and fasteners is extended.
Sealing and anti-leakage
The flange sealing surface is turned or ground, and with O-rings or metal winding gaskets, reliable sealing of rail equipment (such as drain pipes and cable troughs) is achieved.
Quick disassembly and maintenance
The bolt holes are pre-coated with thread locking agent, the installation torque is stable, and the hot disassembly tool can be quickly replaced to shorten the line downtime.

Application scenarios of Flanges

Trunk and heavy-load railways
Used for rail joint reinforcement, turnout assembly connection, bridge expansion joint fixation, and withstand the impact of heavy-load trains with an axle weight of more than 30 tons.
Urban rail transit
Fixed rail equipment in subway tunnels, contact network support base connection, adapt to high-frequency start-stop and small radius curve conditions.
Industrial and mining railways
Open-pit mine tracks, port collection and distribution system equipment connection, resist ore scattering and mechanical collision damage.
Special environment railways
Low-temperature tough materials (-40℃ impact energy ≥27J) are used in high-cold areas (such as the Qinghai-Tibet Railway), and anti-corrosion coatings are strengthened in tropical rainy areas.

Package of Railway Flanges

Polybag+Carton box+Wooden case/Pallet, according to customer’s request

Company Profile

Luoyang Fonyo Heavy Industries Co., Ltd. was founded in 1998, covers an area of 72,600㎡, with more than 300 employees, 32 technicians, including 5 senior engineers, 11 assistant engineers, and 16 technicians. It has been rated as Luoyang Engineering Technology Center, Luoyang Technology R&D Center, and National High-tech Enterprise for many times.
Our production capacity is 30,000 tons per year. Currently, we mainly produce cast steel, cast iron (gray iron, ductile iron, etc.), processing of finished product and component assembly for locomotive,railcar,high-speed trains, mining equipment,wind power,etc.Our products have been exported to Russia, the United States, Germany, Argentina, Japan, France, South Africa,Italy and other countries.

FAQS

Q1: Are you a manufacturer or trading company?
A: We are a manufacturer. Our company was founded in 1998, with nearly 30 years in casting industry, a total area of 72,600㎡, with a factory building area of 51,000㎡.
Q2. What are your main products?
A: We primarily focus on steel casting, iron casting, finished product machining, and component assembly production for locomotive, railcar, high-speed trains, mining equipment, wind power,etc.
Q3: How precision can you produce casting parts?
A: We have the capability of producing casting parts with different casting processes. The production is strictly comply with ISO 9001, ISO 14001 and ISO45001,EN15085, IRIS.
Q4. Can you produce according to the samples?
 Yes, we can produce by your samples or technical drawings. We can build drawings for you after we get your samples too.
Q5: How do you do Quality Control before delivery?
A: Quality inspection is a very important factor to guarantee the quality of steel casting parts. We follow 3 times of inspection during the whole production process. And we will provide material testing report, dimensional testing report, and mechanical properties testing report to our clients before delivery.

It you are interested in any products,please feel free to contact us.
Contact: Stella Liu
Email:sales@railwaypart.com
Mobile:+8615515351287