Flatness measuring system BFI

direct-contactstrip

The BFI shapemeter rolls that we produce under licence from the VDEh-Betriebsforschungsinstitut (BFI) have a solid roll body with a homogeneous steel surface. They are normally installed instead of the existing deflector rolls. For the measurement of wedge-shaped strip, Vollmer offers a special solution that is also based on the BFI patent. It ensures that the flatness of the strips is measured correctly even though transversal stresses are created in the strip during coiling. Individual adaptation With individually manufactured diameters between 200 and 500 mm it is possible to precisely replace the deflector rolls in practically all mills. The outer surface of the 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 measuring zones that the roll should have is determined individually. Vollmer supplies the shapemeter rolls with different surface finishes: Steel, chrome, tungsten carbide or plastic.