Abstract
With the constant demand of strict quality control and efficient inspection, there are a number of automatic inspection systems installed in the distributed production lines. In order to solve numerous cross-process quality analysis problems, a cross-linked integrated information system was developed by China Steel Corporation (CSC). The system has three main functions, such as single coil integrating information query, by rolling sequence quality analysis and dynamic analysis. The range of data covers host data, quality statistical data of production lines, and various kinds of automatic surface inspection system (ASIS) data and images. This makes the quality analysis of coils from the upper process lines to the lower ones much easier and more efficient. There were several successful applications achieved by using this system, such as strip thickness profile unqualified causing mechanism clarification, new product physical property analysis, steelmaking shell defects and hot-rolled scratch defects development tracking, etc. With this system, the quality management skill of CSC was improved tremendously.
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