Severstal Steel Defect Detection

The Steel quality control is currently done mainly by human visual inspection. Human inspectors classify the defects according to their cause and origin because the inspection results are used as feedback to correct the manufacturing process. The experience of the inspector is essential, because there are no fixed defect criteria. The inspector's pass/reject decisions seem to be based on the types of defects and their extent, the maximum number of defects per unit of surface area and the total number of defects on the entire inspected strip. In addition, the inspector's knowledge of the customer and the use of the strip have a great impact on the decisions.