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Geometric surface defect control systems for metal and non-metal semimachined products.
Q-shape GDF optical surface control systems are dedicated to the geometric control of surface defects of the semimachined products using laser profilometry techniques. In these models, special data processing and analysis algorithms identify in real time any defects on the external surface of the material having a size greater than the minimum threshold required by the user (the absolute minimum depends on the system model selected). Thanks to the measurement technique used, 100% of the bar’s surface can be inspected and if required, a predefined zone near th bar ends can also be excluded. Unlike other non-destructive (NDT) measurement techniques, inspection by laser profilometry does not require any reconfiguration of the Measurement Station as the geometry of the bar changes, so bars having a round, square, rectangular, hexagonal section or arbitrarily complex profiles can be measured without distinction by our optical surface control system without the operator having to change any element in the Measurement Station. Different control programs can however be easily configured using the user interface in the Control Station to adopt different defect identification criteria based on the type of product and the quality level desired.
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The multiple wavelength laser measurement technique, directly developed by Q-Tech for the Q-shape systems, allows measurements extremely insensitive to any vibrations of the material during transit inside the measurement area to be taken, thus making the system extremely sturdy and totally reliable even in those plants characterised by extremely heavy operating conditions. The use of sensors with an extremely high dynamic range makes it possible to also reliably acquire semimachined products distinguished by surface finishes that are also very different from each other, starting from dark materials with a high surface texture up to shiny and extremely reflecting materials. All the Measurement Stations integrate a thermal measurement compensation system based on the ambient temperature to guarantee constancy of the measurement characteristics as the ambient operating conditions change. Special Measurement Stations of the Q-shape series for optical surface control are also equipped with special liquid cooling systems, so they are ideal for being installed in production lines distinguished by hot working, up to material temperatures of over 800°C. Lastly, all the Measurement Stations integrate a calibration system able to check the proper calibration of the measurement system at periodic intervals and, if necessary, to compensate any measurement drifts caused by mid-term drift phenomena.