30/03/2022 – Wire rolling mill
High-precision temperature measurement
The increasing demands on material properties of rolled goods become ever more demanding in terms of the production process and production parameters. For this purpose, very narrow tolerances of the rolling temperature are specified by the quality management.
Fig. 7: Panoramic pyrometer with rectangular measuring field. © Keller HCW
Fig. 1: Spectral pyrometers measure thermal radiation at one wavelength and two-colour pyrometers at two wavelengths. © Keller HCW
Fig. 2: Scale and oxide significantly change the radiation properties. © Keller HCW
Fig. 3: Scattered light causes measuring errors due to an enlarged and unclear measuring field. © Keller HCW
Fig. 4: “Cella Temp PX 40” two-colour pyrometer with through-the-lens sighting and focusable optics. © Keller HCW
Fig. 5: Scattered light causes measuring errors due to an enlarged and unclear measuring field. © Keller HCW
Fig. 6: Wire mesh after rolling. © Keller HCW/adobestock
Fig. 7: Panoramic pyrometer with rectangular measuring field. © Keller HCW