IMS Measuring Systems for Tube Mills

In order to ensure economical and future-oriented production of seamless tubes, it is necessary to know the properties of product after every single one of the typically three forming stages. The ever stricter demands being placed on the finished product „tube“ regarding uniformity and compliance with tighter tolerance limits with simultaneous savings in energy and raw materials necessitate a high degree of process reliability, which can only be achieved with precise, operationally reliable and durable measuring equipment. To verify the quality of the product, also to the users of the tubes, all product parameters measured are archived, monitored and analyzed. In this way it is possible to make information available on every single tube produced, both directly during the production process and months after delivery too.

Technical Data Type

Technical Data Type Table/Configuration Range TUBE DATA Tube wall thickness < 50 mm single wall thickness Tube outside diameter 16 to 750 mm Tube temperature < 1300 °C Tube speed < 15 m/s Additional components Gauge Version C-frame 1-Channel (mass measurement) C-frame 2-Channel (eccentricity measurement) O-frame 2-Channel (mass measurement) O-frame 4-Channel (mass measurement) O-frame 5-Channel (1st & 2nd order double wall measurement) O-frame 9-Channel (1st to 4th order double wall measurement) O-frame 13-channel (1st to 6th order double wall measurement) Material Alloyed and unalloyed steels, stainless steels, non-ferrous metals on request TEMPERATURE MEASUREMENT GAUGE DATA Gauge Cooling Drive unit Radiation source Number of sources/detector Traversing C- or O-frame, special designs on request Closed cooling circuit, supplied by customer cooling medium Pneumatic or electric Isotope Cs 137 (185 or 370 GBq per source), X-ray on request 1 to 13 per gauge Keller, Land*, Ircon* DIAMETER, POSITION AND PROFILE MEASUREMENT 1-camera system infrared 2-camera system infrared 1-camera system backlight 2-camera system backlight Ionization chamber KG 126 or KG 60 4-camera system backlight Measuring point size OD 80 to 100 mm (mass measurement), approx. 20 x 60 mm (double-wall measurement) 2+2 camera system backlight 4+2 camera system backlight MEASURING DYNAMICS Analog measuring time constant < 30 ms Laser-Triangulation (diameter) Laser-Triangulation (position) * * Cycle time data acquisition 500 µs 3D Laser-Triangulation (contour) Cycle time data processing Cycle time data output MEASURING ACCURACY 5 ms 10 ms 3D Laser-Triangulation (SIS) LENGTH MEASUREMENT Polytec, Beta Lasermike* Tube wall thickness Application-dependent < ± 0,3 % Tube diameter, position Application-dependent < ± 0,4 % of measuring range end value or < ± 25 µm Surface defects > 0,2 mm depth, length / width application-dependent Standard Option Not available On request * Tube temperature Tube length < ± 0,75 % of measuring range end value < ± 0,1 % of total length plus ± 20 mm end detection 18 19