A system for real-time defect assessment of casted steel slabs in a continuous casting process of steel making to optimize operations of slab-transport means allowing accurate and timely transfer of defective slabs for corrective processing

摘要

The invention relates to a system for real-time defect assessment of casted steel slabs in a continuous casting process of steel making to optimize operations of slab-transport means allowing accurate and timely transfer of defective slabs for corrective processing, the continuous casting process of the steel making process-chain consisting of passing molten steel through a water-cooled substantially vertically-aligned lubricated mold of rectangular cross- section to emerge in the form of a continuous strand consisting of a solid steel encapsulating liquid material, cooling the strand further to complete solidification using water sprays including the period of orientation change of the strand to horizontal from vertical using rollers before being finally cut into discrete slabs, the system comprising:-an image Display module; a velocity calculation and non-overlapping identification module; an integration overseeing module; an initial assessment module; a final assessment module; and a data base module including communication with external systems, wherein the system is configured to : operate CCD cameras for capturing images from lower and upper surface of the strand and transferring the images to a server for displaying the images to operations control personnel; implement a fast image processing technique to recognize the type and intensity of slab defects and simultaneously transmit command to the slab transport means in the form of cranes and rollers to automatically transport the slabs to divergent destinations dependent on the identified defects; perform a task of dissecting the real defects from different types of surface scale deposits at sufficient speed to enable a real time realization; wherein the image processing technique is a Maximum Strength of a continuity of a curvaceous line (MASOC) to speed up the image processing task to a level of real time implemention; and wherein said MASOC technique operates as a component of known Hough transform method to detect the Maximum Strength Of Continuity (MASOC) of a curvaceous line enabling fast and accurate identification of cracks and groove marks on the slabs distinct from the scale deposits.