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
Modification and Upgrade of Mills
Modification to servohydraulic mill screwdown
The upgrade of mills by Vollmer not only includes the addition of up-to-date measurement technology, but also includes the complete design, manufacture and installation of servo hydraulic hydraulic screwdown controls.
The condition for a high speed strip thickness control is the fast and precise screwdown of the rolls. Fast means just a few milliseconds and precise means an accuracy of lass than a µm.
Vollmer has the experience of decades in replacing spindle-motor screwdowns in existing mills with servohydraulic mill screwdown, in designing the new cylinders per the space in the mill, in 
designing and planning all hydraulic power units and in modifying the mill on site (anywhere in the world).
The efficiency of the servohydraulic mill screwdown is the necessary basis for the success of the high speed strip thickness control.
The hydraulic cylinders must move to the nominal position with a sufficiently low friction and highest speed (3 mm/sec). The position is controlled by high-resolution position sensors (0,2 µm).
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.