Core Technical Advantages of Our Rail Milling Train

Technical Background of Our Rail Milling Train

Rails on railways, metro systems and tramways undergo constant wear during operation. so regular rail maintenance needs to be performed to improve operational safety, extend rail service life and minimize total life-cycle costs. To keep the impact of rail maintenance on daily operations to a minimum, we have developed special rail milling and grinding vehicles that can reshape rail heads in situ without removing the rails in advance. 

We manufacture a full series of rail milling vehicles in different models, each tailored for rail reprofiling work. They are compatible with conventional railways, light rails, metro lines, tramways and private railways, and fit all-speed main lines, turnouts, track crossings, level crossings and tunnel sections. Increased traffic frequency and total axle load exacerbate rail wear and damage the wheel-rail system. Accordingly, infrastructure operators require a dedicated technology to repair damaged rail head surfaces regardless of wear severity. Our high-performance milling technology fully meets the above demands and can deliver sustainable rail life extension flexibly and cost-effectively as rail loads keep increasing.

Current Operational Challenges

As freight volumes increase, passenger ridership expands, train headways decrease, and passenger trains operate at higher speeds, plastic deformation forms within the wheel–rail contact patch, all these factors together cause deformation at the contact surface between wheels and rails。Such wheel–rail contact deformation gives rise to rail defects, which lead to the following adverse operational impacts:

1. Safety hazards

2. Reduced running speeds and train delays

3. Service disruptions and additional breakdown costs

4. Increased noise pollution

5. Shortened service life of wheels and rails

6. Exacerbated wheel and rail wear

7. Rail corrugation, spalling, fractures and other rail defects

8. Deteriorated passenger ride comfort

High-performance Technology of Our Rail Milling Train

High performance milling technology of our rail milling train enables regular rail profile restoration, which greatly extends rail service life and cuts overall operating costs. With years of professional track maintenance experience, we can fully eliminate all types of rail defects including corrugation, spalling and fractures.

1. Restore the original profile of rail heads

2. Separate collection of milling chips and grinding dust

3. Zero dust pollution

4. No water or fire suppressant required during operation

5. Achieve excellent surface machining precision

6. Single-pass milling depth ranges from 0.1 mm to 6 mm

7. Spark-free operation, eliminating fire hazards

8. No alteration to rail head metallurgical structure (no blue temper discoloration); heat is carried away by metal chips

9. High-precision correction of transverse and longitudinal rail profiles

10. Rail gauge repair capability

11. Rail quality inspection and recording after operation

12. Crack detection function

13. No smearing or masking of existing rail defects

14. Low consumption of carbide inserts, resulting in low operating costs

The Aim – Rail Life Cycle Optimization 

1. High-Performance Rail Milling Technology for Rail Maintenance – The Ideal Solution for All Maintenance Strategies Preventive maintenance aims to remove rail defects with small single-pass milling removal once they emerge, keeping rail surfaces nearly intact and damage-free. 

2. Periodic maintenance is an extension of preventive maintenance programs. Rail reprofiling is not scheduled based on visible rail defects, but on historical empirical data of rail wear and defects over fixed service periods or tonnage load cycles. 

3. Corrective maintenance strategies apply to rail defects of moderate to deep depth. Once defects develop to a severity requiring corrective maintenance, rails must undergo corrective reprofiling or full replacement. This intervention threshold depends on the local available rail maintenance options. 

Such maintenance solutions can extend rail service life several times over, greatly reducing overall rail life-cycle costs.

Rail Milling Train For Sale

Rail grinding train, also called rail grinding vehicle, or track grinding train. We specialize in the manufacture of FGM intelligent rail milling trains. Our FGM series combines high-speed milling with ultra-precision grinding technology in a single unit. These machines carry out corrective milling and grinding to eliminate common rail surface defects such as spalling, rail head flaring, corrugation and lateral wear. They also support standardized preventive grinding as well as pre-service profiling for newly constructed track lines. With clean operation, high efficiency and full intelligent control, it rectifies all rail faults in a single pass, delivering top performance and low total life-cycle cost as the ideal solution for metro track maintenance worldwide. 

Our vehicles have been delivered in bulk and demonstrated stable, dependable performance in commercial operation for projects including MTR Hong Kong and Zhengzhou Metro. We offer fully customized rail milling trains compatible with various track gauges and rail profiles. We sincerely welcome global agents and partners to cooperate with us. We provide one-stop service covering design, production, commissioning and after-sales support, and we also offer local co-assembly and OEM solutions. Feel free to contact us for cooperation details.