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Computer modeling of the continuous annealing furnace
Authors:Sung Ho Jeong  Joon Jeong Yi  Jong Keun Kim  Man Yeong Ha
Affiliation:1. The Research Institute of Industrial Science & Technology, P. O. Box 135, 790-600, Pohang, Korea
2. Department of Mechanical and Production Engineering Pusan, National University, Kumjung Ku, 509-735, Pusan, Korea
Abstract:A computer program to calculate the strip temperature heated in the continuous annealing furnace was developed, using the zone method for radiative heat transfer analysis with the measured gas temperature in the furnace. Using theF E Operator, the present study considered the effects of soot and transient species, in addition to the H2O−CO2 gas mixture on the gas radiative heat transfer. The predicted strip temperature distribution forF E=1.05 represented well the measured data. The maximum difference in the heat flux transfered to the strip from the combustion gas forF E=1.0 (without soot and transient species gas radiation) and 1.05 (with soot and transient species gas radiation) was about 15%. The present study also investigated the effects of line speed and thickness variations on the strip temperature, establishing the bases for the on-line computer model.
Keywords:Continuous Annealing Furnace   F E Operator  Gas Radiation  Strip Heating  Zone Method
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