Options
Heat Transfer Model of Coil in a Bell Annealing Furnace
Journal
Lecture Notes in Mechanical Engineering
ISSN
21954356
Date Issued
2022-01-01
Author(s)
Kumar, Deepoo
Viswanathan, Nurni N.
Sarkar, Partha Sarathi
Abstract
Batch annealing furnace is used for stress relieving and recrystallization of cold rolled coils. Six to eight coils are stacked and heat treated under inert atmosphere for about 50–60 h. The optimization of such a furnace is desired for both quality and productivity purposes. Several researchers have worked on this problem to develop models based on heat transfer, microstructure evolution, and/or data analysis. In this work, a simplified heat transfer model is developed incorporating continuous measurement of hydrogen gas temperature. The model is validated with exhaustive temperature measurement campaigns. The validated model is being used to optimize batch annealing furnace operation. This model has been useful in reducing both energy consumption and rejection rate at the plant.
Subjects