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KAWASAKI STEEL TECHNICAL REPORT
No.7 ( March 1983 )

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Control System of Cold Spot Temperature for Batch Annealing Furnace

Sumio Umemoto, Toshio Iwasaki, Hiroaki Ueno, Toshikazu Kaihara, Norihisa Shiraishi, Shingo Fujii
Synopsis :
A cold spot temperature control system for the batch annealing furnace has been established in order to reduce energy consumption, to imporove productivity and to stabilize the properties of products. This system is called the "Coil Annealing Prediction System (CAPS)." Through the use of the exact heat transfer model, the CAPS can predict the necessary lowest temperature of each coil in the furnace for producing the coil having the suitable mechanical properties, and stop heating the coils, when the temperature of the coldest point reaches the predicted value. Since its practical use in May 1980, CAPS has been operating smoothly and achieved more than 10% energy cost saving.
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