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K900TMobile Rail Welding Machines
K900T is a mobile flash-butt welding machine developed for tram rail profiles, including 60R1 and 60R2. It is designed for field welding with continuous or pulsed flashing and immediate flash removal as part of mobile rail-welding equipment.
Applications
Construction and renewal of tramway track
Field welding of 60R1 and 60R2 tram rail profiles
Mobile rail-welding installations requiring operation on either the right-hand or left-hand rail.
Key Advantages
Technology & System Architecture
K900T performs flash-butt welding using continuous or pulsed flashing for rail cross-sections from 6,500 to 10,000 mm² in the specified tram-rail application.
Clamping & Alignment
The machine uses hydraulic clamping and upsetting. Its mechanical arrangement is designed for stable positioning of tram rails during the welding cycle and can operate on either side of the track.
Flash Removal
An integrated flash-removal mechanism removes flash immediately after welding. The mechanism operates independently of the clamping cylinders, allowing deburring before the electrodes are opened.
Control & Quality
The welding cycle is controlled automatically by the machine control system. The delivered control architecture is configured for the approved tram-rail welding programs and machine monitoring.
Cooling & Hydraulics
A closed cooling system cools the welding transformers and current-carrying electrodes and provides coolant-temperature adjustment. Hydraulic system operating pressure is 11 MPa.
Technical Specifications
Rail profiles
60R1 / 60R2
Rail cross-section
380 / 400 V
Mains voltage
380 / 400 V
Power supply phases
2
Auxiliary circuit phases
3
Frequency
50 Hz
Maximum secondary current
63 kA
Short-circuit power
400 kVA
Short-circuit resistance
105 µΩ
Rated primary current
395 A
Power at 50% duty cycle
170 kVA
Continuous secondary current
18 kA
Rated upsetting force
545 kN
Upsetting-cylinder stroke
100 mm
Hydraulic pressure
11 MPa
Machine dimensions
1,587 × 1,007 × 1,400 mm
Machine weight
≤2,750 kg
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 is K900T designed for?
K900T is designed for field flash-butt welding of tram rails, including 60R1 and 60R2 profiles.
Can K900T work on both sides of the track?
Yes. The machine can operate on both the right-hand and left-hand rail.
How is flash removed?
The built-in flash remover removes flash immediately after welding and operates independently of the clamping cylinders.