Sms Siemag Aktiengesellschaft

Ims Messsysteme Gmbh

Rainer Fackert

Dieter Rosenthal

Peter Sudau

Ingo Schuster

Stephan Schulze

Andreas Weinert

Wilfried Schumacher

A method for the detection and classification of surface defects on continuously cast products using topographical information about the appearance of continuously cast surface defects and/or flaws are determined with respect to their exact position, evaluated with respect to their location and dimensions, and eliminated in accordance with the evaluation prior to further machining of the product, or are prevented by optimizing the process. The defects and/or flaws on the slab surface of the continuously cast preliminary product are detected and are stored with respect to their exact position and a detection of defects and/or flaws on the finished product is carried out and stored with respect to their exact position, and in that the information from the preliminary product is then compared with the information from the surface inspection on the finished product. Only the information which has led to, or can lead to, defects on the finished product is considered for the elimination of defects and/or flaws on the preliminary product.

Method for detecting and classifying surface defects on continuously cast slabs

The invention relates to a method for the geometrical measurement of a material strip (), whereby the material strip () defines a longitudinal direction, whereby, by means of a first measuring device with at least one radiation source () and with at least one detector (), the strip thickness of the material strip () is determined, whereby for this purpose the radiation () from the radiation source () penetrates the material strip () at at least one measurement point () arranged in the material strip (), and the resultant weakening of the intensity of the radiation () is determined by the corresponding detector (). It is proposed that, by means of a second measuring device, the transverse contour of the material strip () is determined. In this situation, the measurement of the strip thickness and the transverse contour is effected at the same place on the material strip. The measured values of the thickness measurement are corrected with the measured values of the transverse contour. The invention also relates to a device for the performance of the method.

Method and device for the geometrical measurement of a material strip

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Meinborn, Germany

Rainer Fackert