The development of the first strip thickness gauge worldwide, that could measure the thickness of the strip during the rolling process in cold mills with an accuracy of µm, was the start of our company in 1963.
Vollmer America
Contact Strip Thickness Measurement
Basic Principle
Linear differential transducers with rounded natural or synthetic diamond inserts contact the strip surface from above and below. The evaluation of the differential signal results in the strip thickness.
Specific devices of the gauge head (such as the unique rotational suspension, heater, cooling system, etc.) ensure that the transducers are always perpendicular to the material regardless of the strip conditions, such as waviness, vibrations etc., and that effects, such as the strip temperature etc., can be compensated.
The different strip dimensions, speeds and environments gauge designs adapted to them.
Gauge for medium and wide strip mills, highest measurement accuracy with thicknesses up to 22 mm
Gauge for narrow strip mills, highest measurement accuracy with thicknesses down to 0,01 mm
Gauge for slitting lines or tube welding lines, for example, very robust
Advantages
Absolute measurement of the strip thickness, independent of alloys, easy maintenance, inexpensive spare parts.
VUD Strip Thickness Measurement – Leaflet for download (German/English)
VBM/VBS Strip Thickness Measurement (absolute) – Leaflet for download (German/English)
What's New
VIP 08 Flatness Measurement System
While the strip thickness tolerances were a significant criterion for the quality assessment of strip material in the eighties and nineties, significant improvements in controls and automation have made good thickness control a given among suppliers.
First Isotope Thickness Gauge Application in Mexico
During this past fall, we installed our first two – Model A3000 Isotope Thickness Gauges in Mexico. The application was for stainless steel on a heavy-duty reversing mill with 24/7 operation.
Quality and Yield Optimization on Cold Rolling Mills
In order to accommodate for the high demand in accuracy, quality and yield, it is essential to optimize the existing operating equipment. In the past Vollmer has supplied and been known for their high performance thickness gauges in conjunction with the automation of the screwdown system.
News & Events
BFI Article shows new design for shape roll measurement
The well-proven BFI version shape measurement roll has undergone a design change that improves its ability to measure the tensions profile on flat product without marking the strip. The detectors have been redesigned to fit into the roll while leaving the surface of the roll completely clear of machined marks. This eliminates the former problems associated with the axially installed sensors.