CogX: The hard & durable rolled steel
CogX is a rolled and heat-treated steel which complements Vossloh’s product portfolio and offers new possibilities for customized designs with high performance levels:
- tramway & railway crossings,
- half switch blocks for tramways,
- tramway tongues and
expansion joints, etc.
Based on decades of expertise in crossing design & manufacturing, CogX is a co-development with ArcelorMittal Industeel with an initial hardness from 450 HB and an extremely hard running surface (550 HB).
Heat treated laminated steel: Cogidur
Heat treated frogs (DB standard)
Cast manganese steel frogs with four flash-butt welded rails
Material characteristics
- Better profile stability & creep resistance
- No material flow or deformation
- Allows higher transit tonnage
- High wear and impact resistance
- Specific solution for turnouts with high traffic density
Ideal processing properties:
- All geometries for tongues and frogs can be cut and milled very precisely.
- Many new designs and new track types can be realized
- Excellent weldability
Different type of welds are qualified :
- Arc welding between grooved rail and CogX crossings for Tramway (as per ISO 15614-1)
- Flash butt welds between Vignole rails and CogX railway crossing (as per EN 14587-3)
- Repair welds (as per EN 15594), repairing recommendations are available
Some projects & references:
Metro references:
- Metro Milan with diamond crossings
- Metro Lisbon with points
- Metro Copenhagen with movable point crossing cradles
Network Rail CogX monobloc crossing prototype:
- 1 in 13 straight crossing block
- 56E1 rails flash butt welded
- Installed in July 2022
- Cumulated tonnage around 50MGT.
Infrastructure Portugal CogX expansion joints:
- 4 expansion joints delivered for the bridge of 25 April in Lisbon
- CogX replaces historical technology with heat treated components
- 1 expansion joint installed since June 2022
- 4 machined CogX parts are necessary for one expansion joint.
