Process and apparatus for automatically detecting scale on metallic strip surfaces, in particular hot rolled steel or stainless steel strip

摘要

Process for automatically recognizing scale on the surfaces (1a) of hot rolled steel strips (1) comprises absorbing and digitizing scale build-up by optically scanning the surfaces of the strips; and using the digitized pattern as a control signal for the devices used to treat the strips to compare with a digital master pattern. An Independent claim is also included for a device for automatically recognizing scale on the surfaces of hot rolled steel strips comprising electronic cameras (7, 8) for storing information about color, color spectra, surface structure, roughness and/or color patterns. Preferred Features: Data about the material, scale build-up, cooling of the coiler, coil quality and/or duration of cooling of the coiler are fed to a computer via an evaluation system (10).