5-Hour Possession Rail Replacement Project on Wuhan–Yichang Railway Line (China Railway Wuhan Bureau)

5-Hour Possession Rail Replacement Project on Wuhan–Yichang Railway Line (China Railway Wuhan Bureau)

Summary

During routine track inspection on the Wuhan–Yichang railway corridor under China Railway Wuhan Bureau, track recording car (TRC) data and on-site verification identified localized rail defects, including accelerated rail head wear, corrugation, and contact fatigue-related surface deterioration.

Emergency Rail Replacement Works – Wuhan–Yichang Section under China Railway Wuhan Bureau

Rail Replacement
During routine track inspection on the Wuhan–Yichang railway corridor under China Railway Wuhan Bureau, track recording car (TRC) data and on-site verification identified localized rail defects, including accelerated rail head wear, corrugation, and contact fatigue-related surface deterioration.

These conditions affected track geometry stability and operational safety, requiring immediate intervention.

A 5-hour track possession window (300 minutes) was allocated for emergency rail replacement works, placing strict requirements on work organization efficiency, equipment reliability, and process coordination.

The affected section involved approximately 100-meter-class continuously welded rail (CWR).

Railwaycare responded rapidly to the project requirements by supplying a complete set of rail maintenance equipment systems and thermite welding consumables, and completed pre-work preparation including:

·Full equipment functional inspection and load testing (100% operational readiness verification).
·Process integration review for rail cutting and thermite welding workflow.
·Task breakdown and time-schedule optimization within the 300-minute possession window.
·On-site equipment configuration planning and redundancy setup.

Rail Cutting Operations – Railwaycare Fuel-Powered Rail Cutting Machine System

The first critical operation in rail replacement is precise removal of the existing rail.

This project adopted the Railwaycare fuel-powered rail cutting machine system, designed for non-electrified and field track possession environments.

The system uses a high-torque combustion engine drive combined with resin cutting discs optimized for rail section cutting.

Technical performance:
   ·Power type: Fuel-driven portable rail cutting system.
   ·Cutting disc: Railwaycare resin-bonded abrasive cutting wheel.
   ·Cutting capacity: approximately 2.5–3 rail joints per disc.
   ·Single cut duration: approximately 3–6 minutes per rail section (depending on rail grade and condition).

Quality control requirements:
   ·No thermal damage (no burn marks or metallurgical discoloration).
   ·No burrs or edge cracking.
   ·Clean and perpendicular cut face.
   ·End geometry compliant with thermite welding alignment requirements.

This rail cutting system ensures stable geometric preparation for subsequent welding operations.
Rail Replacement cutting

Rail Welding Operations – Railwaycare Thermite Welding Material System

After new rail installation, rail joints are connected using aluminothermic welding (thermite welding) technology to form continuous welded rail.

Railwaycare provides a complete thermite welding material system solution designed for field welding applications.

System components:
  ·Thermite welding portion (reaction temperature exceeding 2400°C).
  ·High-temperature sand mould system (heat resistance up to ~3000°C).
  ·Pouring and gating system components.
  ·Ignition and auxiliary consumables.
  ·Welding tooling kit for field operations.

Engineering characteristics:
  ·Metallurgical bonding between rail ends achieved in-situ.
  ·Weld strength comparable to base rail under standard welding procedures.
  ·Suitable for heavy-haul and high-frequency rail networks.
  ·Designed for rapid deployment under possession time constraints.

                      More information: Track Maintenance Solution
Railway Thermite Welding
Railway Thermite Welding

Rail Grinding Operations – Railwaycare Rail Grinding Machine for Weld Finishing

After thermite welding, rail grinding is required to restore rail profile and ensure smooth wheel–rail interaction.

This project used the Railwaycare portable rail grinding machine system for weld finishing and surface correction.

Functional scope:
  ·Removal of weld flash and excess weld metal.
  ·Correction of surface irregularities.
  ·Restoration of standard rail profile (Rail Profile).
  ·Reduction of wheel–rail contact stress concentration.

Grinding control parameters:
  ·Weld crown reduction target: ≤0.2 mm after finishing.
  ·Surface transition: smooth and continuous with no step defects.
  ·Compliance with track recording car dynamic geometry requirements.
  ·Preservation of rail head structural integrity.

This system significantly improves long-term weld performance and track smoothness.

                                 Related system: Track Maintenance Solution

5-Hour Track Possession Rail Replacement Execution Strategy and Integrated Railwaycare System

This Wuhan–Yichang emergency rail replacement project was successfully completed within a 300-minute track possession window, demonstrating highly coordinated workflow integration and equipment-system compatibility.

Work breakdown schedule:
·Rail cutting operations – approx. 30–45 minutes
·Old rail removal and new rail installation – approx. 60–90 minutes
·Thermite welding operations – approx. 45–70 minutes
·Weld grinding and finishing – approx. 20–40 minutes
·Track geometry inspection and handback preparation – approx. 20–30 minutes

System advantages:
·Full-cycle rail replacement completed within limited possession time.
·High compatibility between cutting, welding, and grinding systems.
·Reduced idle time between sequential operations.
·Optimized for emergency railway maintenance scenarios.

                                  Explore system solution: Track Maintenance Solution

Railwaycare Integrated Track Maintenance Solutions & Engineering Value

As a specialized manufacturer of railway maintenance equipment and consumables, Railwaycare provides integrated solutions covering rail cutting, thermite welding, rail grinding, and permanent way maintenance systems.

This project demonstrates the engineering reliability and efficiency of Railwaycare systems under real-world operational constraints.

Key engineering outcomes:
·Estimated 20%–35% improvement in possession time utilization efficiency.
·Enhanced workflow consistency across maintenance operations.
·Reduced on-site operational uncertainty.
·Improved long-term stability of continuously welded rail systems.

                      Learn more: Track Maintenance Solution

Contact Railwaycare for Technical Support and Customized Engineering Solutions

Railwaycare specializes in the design and manufacturing of rail maintenance equipment and consumables for global railway infrastructure projects.

If you are looking for:

  ·Rail replacement equipment systems.
  ·Thermite welding consumables and kits.
  ·Rail cutting and grinding equipment.
  ·Integrated track maintenance solutions..

Our engineering team can support you with: