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K900A-1Mobile Rail Welding Machines
K900 A-1 is a mobile flash-butt rail welding machine for field welding of rails with a cross-sectional area of 6,500–10,000 mm². It supports continuous and pulsed flashing and removes flash immediately after welding. The machine is intended for mobile rail-welding installations and can also be used in a stationary installation where required.
Applications
Field welding during railway construction and renewal
Continuous welded rail construction and repair
Integration into mobile, containerised and road-rail systems.
Stationary welding applications where the project requires this arrangement.
Key Advantages
Technology & System Architecture
The machine performs flash-butt welding using continuous or pulsed flashing. Welding parameters are controlled through the machine control system, followed by hydraulic upsetting to form the welded joint.
Clamping & Alignment
Hydraulic clamping and upsetting are integrated into the welding head. The lever arrangement provides clamping and upsetting force while maintaining a compact mobile-machine architecture.
Clamping & Alignment
Hydraulic clamping and upsetting are integrated into the welding head. The lever arrangement provides clamping and upsetting force while maintaining a compact mobile-machine architecture.
Control & Quality
Siemens-based programmable control is used for welding-process control and machine monitoring. WeldReg functions can record welding parameters and maintain weld records in the approved configuration.
Cooling & Hydraulics
Closed-loop cooling protects the welding transformers and current-carrying assemblies. The complete-machine configuration includes the matched hydraulic pumping station and cooling equipment.
Technical Specifications
Rail cross-section
6,500–10,000 mm²
Mains voltage
380 / 400 V
Frequency
50 Hz
Maximum secondary current
63 kA
Continuous secondary current
22 kA
Short-circuit power
400 kVA
Power at 50% duty cycle
170 kVA
Rated upsetting force
500 kN
Clamping force
1,400 kN
Upsetting stroke
75 mm
Hydraulic pressure
110–120 bar
Welding head dimensions
1,700 × 1,060 × 1,300 mm
Welding head weight
2,600 kg
Maximum productivity
Up to 10 welds/h
Available Configurations
Welding Head
Welding head with integrated welding transformers/current-carrying assemblies, hydraulic clamping and upsetting mechanisms, flash-removal mechanism where applicable, and machine-side sensors, valves, actuators and connection points required for integration.
Complete Welding Machine
Everything included in the Welding Head configuration, plus the matched hydraulic pumping station, control cabinet and welding-process control system, cooling equipment, interconnecting power/control cables, hydraulic and cooling hoses, and required auxiliary equipment.
Containerised Solution
Complete Welding Machine integrated into a project-specific transportable system with hydraulics, cooling, control equipment, autonomous power generation where required, welding-head handling equipment, container infrastructure and project-specific safety systems.
Frequently Asked Questions
What rails can K900 A-1 weld?
The standard documented range is 6,500–10,000 mm². Final profile compatibility is confirmed for the project tooling and welding program.
Does K900 A-1 remove flash automatically?
Yes. The integrated flash-removal mechanism removes flash immediately after welding.
Can K900 A-1 be supplied for customer integration?
Yes. The Welding Head configuration is intended for integration into a customer or KZESO mobile system.