BFI Shapemeter Roll
The Shape Determines the Quality
The BFI shapemeter rolls that we produce under license from the VDEh-Betriebsforschungsinstitut (BFI) have a solid roll body with a homogeneous steel surface.
- Installed instead of a deflector roll
- Closed roll surface
- Simple integration
Individual Adaptation
The Digital BFI Roll
The Principle
Permanently Reliable
Individual Adaptation
With individually manufactured diameters of between 200 and 600 mm, the BFI flatness roll can be integrated into practically any mill stand instead of deflector rolls. The outer surface of the flatness roll body is absolutely homogeneous and can be reground on all standard roll grinding machines.
The width of the measuring zones can be freely selected above 17 mm. The number of zones that the rolls have can be adapted to the specific needs of the application.
Vollmer supplies the shapemeter rolls with different surface finishes: steel, tungsten carbide, plastic or chrome. We also offer a special solution for measurements on wedge-shaped strips. It ensures that the flatness of the strips is measured correctly even though transversal stresses are created in the strip during coiling.
The Digital BFI Roll
The BFI flatness roll can be easily integrated into the digital world: communication with the mill process control system is via TCP/IP. Parameterization of the software and the design of the display will be completely web-based in the future. Every device with a web browser in the same network as the shape computer – be it a PC, notebook, tablet or smartphone – can display the measurement data.
The Principle
The BFI measuring rolls use piezoelectric pressure gauges which – spread over the width of the strip – are installed in bores under the flatness roll surface. They measure the strip tension distribution as the strip passes over the shapemeter roll.
Permanently Reliable
The telemetric data transmission from the flatness roll – without slip rings – ensures reliable and practically maintenance-free operation. The BFI flatness rolls need neither compressed air nor water.