SynopsisAdvanced mathematical models for plate mills including a plate crown model and a plate flatness model were developed for draft scheduling. These models have the following features :(1) Optimum draft scheduling is possible by a special plate crown model.(2) Accurate plate temperature estimation is established.(3) A rolling load model which will cover a wide range of rolling conditions was developed.
Synopsis In plate rolling, the plate thickness is controlled by using the mill itself as a plate thickness measuring device, namely Gaugemeter. To maintain the Gaugemeter accuracy is very important not only for plate thickness control but also for plate flatness control. That is; (1) The Gaugemeter error is a basic factor which impairs the accuracy of plate thickness. (2) The Gaugemeter error sometimes reaches 1001 m. (3) The variation in the plate thickness based on the Gaugemeter error can become the largest factor that affects badly plate flatness through the variation in the rolling load.
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