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 and Non-Contact Strip Width Measurement
Narrow strip mills up to a strip width of about 100 mm are often equipped with combined strip thickness / strip width gauges. Strip thickness measurement is realised as described above.
There are two alternatives for the strip width measurement:
Contact Strip Width Measurement
Width and thickness gauge combination
The contact strip width gauge is usually installed in combination with a contact strip thickness gauge. Transducers touch the strip edge on both sides, the evaluation of the differential signal results is the strip width.
The basic difference to the measurement of the strip thickness is the design of the diamond contacts as oblong shapes (blades), preventing the transducer from slipping off the edge in case of unsteady strip pass line.
Contact measurement is unbeatable in the case of very oily strip or mill mists.
… on Narrow Strip / Profile – Leaflet for download (German/English)
Non-Contact Strip Width Measurement
By laser measurement system
As an alternative to the strip edge detection by contacting transducers, a laser measurement system is installed, measuring the strip width per a back shadow principle.
With relatively clean strip and good strip guidance, this technology is an alternative to the contact measurement.
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.