Thickness measurement equipment - Import export

The QuellTech laser sensor family Q4 or Q5 used for these tasks is generally mounted on an arm of a rotational axis, to scan along the complete 360° angle of the internal surface in a sequence of strips. The Q4 sensors can also be used to control the weld seam tracking itself for rapid setup and ease of use. Even during a project, the range and scope of the Q Series sensor demonstrates the advantages of a modular system to quickly adapt to project needs, where the smallest system has provided fast analysis of pipes as small as 105mm. The low power, with standard communication protocols, enable battery powered systems to transmit wireless data to other systems for review and cloud back up.

Many materials cannot be measured tactilely, therefore non-contact thickness measurements become necessary. Especially e.g. with glowing materials, or wet processes, a continuous tactile measurement is nearly impossible. Furthermore, web speeds in plant engineering and production have increased, requiring a corresponding fast sampling rate of the measuring systems. In addition, high measuring widths are often required. Why is contact free measurement technology so perfect for this application? Can be used in any web width, Scalable measurement thicknesses from a few millimetres to several meters, Thickness and coating thickness can be measured for different materials, Vibrations of the web materials, can be compensated, Turnkey solution for mechanical engineering, Non-contact and non-destructive measurement method, Large distances to the measured object are possible, Measurement of free forms,

The high-performance optoNCDT ILR2250 laser distance sensor is used whenever large measuring ranges and high accuracy are required. The optoNCDT ILR2250 can be installed at distances up to 100 m, and even up to 150 m with a reflector film. This sensor impresses when measuring dark, structured and poorly reflecting surfaces, while providing stable measurement results to millimeter accuracy. The optoNCDT ILR2250 laser distance sensor is used in transportation, logistics and conveyance technologies as well as automation and the metals industry. This is where the sensor enables reliable measurement results even when it is, e.g., installed at a safe distance from heat emitting measuring objects. In addition, difficult-to-access places via mirrors or through glass sheets can be detected.

The measuring wire ist fastened to the headstock or a special holding device, fed at the end of the base over a pulley and stretched tight with a weight (layout according to DIN 8606). The alignment tester must be placed on the carriage of the machine or a corresponding device, which can be moved in a longitudinal direction in predefined steps on the machine base. The measuring wire must be aligned in such a way that the same values are measured in the starting and end position of the carriage, i.e. that it is tensioned to form an imaginary connecting line parallel to these positions. When the wire is aligned to the bearing, the value display is set to zero. The straightness deviation can now be read directly on the display for each position when both parts of the image are fitted together by moving the microscope horizontally with the integrated micrometer spindle.

Low load hardness tester from 1 g to 2 kg Vickers or Knoop diamond indentor manual, semi- or fully-automatic

Proven for decades The contact gauges that measure the thickness of the strip with an accuracy of a few micrometres are renowned for their outstanding precision and exceptional reliability: Almost 2000 systems that have gone into operation worldwide in recent decades are still in use even today. They still form an integral part of the measurement technology in new plants where the highest precision is demanded. Flexible from 0.01 to 24 mm Tactile measurement is employed at all stages of the strip production process – on the annealing line and during rolling, on the finishing line or during strip processing as well as in the steel service centre. Vollmer delivers the systems in different versions for thicknesses from 0.01 to 24 mm. Precise even on wavy strip With a measuring precision of down to one micrometre per millimetre of strip thickness, they meet the demands of modern rolling mills. Contact gauges adapt to the strip passage and follow any waviness of the material.

Proven for decades The contact gauges that measure the thickness / width of the strip with an accuracy of a few micrometres are renowned for their outstanding precision and exceptional reliability: Almost 2000 systems that have gone into operation worldwide in recent decades are still in use even today. They still form an integral part of the measurement technology in new plants where the highest precision is demanded. Flexible for up to 9 mm strip thickness / 32 mm strip width Tactile measurement is employed at all stages of the strip production process – on the annealing line and during rolling, on the finishing line or during strip processing as well as in the steel service centre. Vollmer delivers the systems in different versions. Optional the strip thickness gauge can be equipped with an additional strp width measurement unit.

The high-speed servo-hydraulic control of the mill screwdown closes the loop: The thickness values measured precise to the micrometre form the basis for quick and precise control. Vollmer offers solutions for all control concepts from simple feedback control through to complete mass flow control or Direct gap contol for rolling of wedge-shaped strip and in tandem mills. Vollmer supplies the complete control system – from the sensors through the control technology right up to the hydraulics and the cylinder – from a single source. For our customers that means having just one contact partner – in short: A one-stop solution.

The new standard for precision and speed With the new VTLG Series laser systems, Vollmer is giving strip thickness measurement new impetus: They combine the highest precision with rolling mill-oriented design. Thanks to their unique measuring method, they are suitable for use in cold rolling mills. With a measuring precision of ± 1 µm and scanning rate of up to 80 kHz, they offer the precision and speed necessary for the control of the strip thickness. VTLG systems are the only laser gauges to measure the strip thickness during rolling in the mill, thus opening up completely new possibilities in production and quality assurance for our customers. As with our contact gauges, they measure the thickness irrespective of the alloy – ideal preconditions for use in the rolling mill, but also on the annealing line, in the finishing section, on the strip edge miller or in the steel service centre.

The radiometric gauges from Vollmer operate contact-free and measure from a safe distance. They are characterised by their extremely narrow design: With some systems the C-frame is only 120 mm wide. The X-ray systems from Vollmer have digital detectors which give them extremely low noise values. Vollmer supplies the systems with high-quality ceramic tubes and the necessary cooler. The isotope systems also have digital detectors. A particular feature of the Vollmer systems is that the radiation source is located in a special tungsten drawer that can be easily removed from the gauge. Alloy compensation is made either in the classic manner using calibration plates or alternatively at the computer according to the customer's chemical alloy analysis or simply with a small contact thickness gauge that measures the absolute thickness at the start of the pass and transmits this value to the radiometric thickness gauge.