Off-line prediction method for bell-type furnace steel roll annealing process

Abstract

The invention provides an off-line predicting method for annealing process of a hood type steel coil, which comprises predication at heating phase, soaking phase and cooling phase. The predication at heating phase comprises calculation of smoke temperature, calculation of heating hood temperature, calculation of the updating for protective gas property and flow field, calculation of inner hood temperature, calculation of protective gas temperature, and calculation of steel coil temperature field; the predication at soaking phase comprises calculation of smoke temperature, reverse calculation of fuel volume, calculation of heating hood temperature field, calculation of the updating for protective gas property and flow field, calculation of inner hood temperature, and calculation of steel coil temperature field; the predication at cooling phase comprises calculation of cooling media temperature, calculation of cooling hood temperature, calculation of protective gas physical property and flow field, calculation of inner hood temperature, calculation of protective gas temperature and calculation of steel coil temperature field. The off-line predicting method can give max. role of the producing capability of a coil base.

Description

technical field [0001] The invention relates to an off-line prediction technology in the annealing process, in particular to an off-line prediction technology in the steel coil annealing process system of a bell furnace. Background technique [0002] The annealing quality of the steel coil and the annealing output of the bell furnace are directly determined and affected by the annealing process of the bell furnace steel coil. Therefore, in order to ensure the annealing quality of the steel coil and effectively utilize the annealing capacity of the bell-type furnace, it is very important to accurately and reasonably set the annealing process of the steel coil in the bell-type furnace. [0003] So far, there are mainly two ways to set the annealing process system of bell-type furnace steel coil: one is to set through the standard curve established by experience; the other is to set through the annealing process calculation software. Among them, if the method of setting by emp...

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Problems solved by technology

[0009] The object of the present invention is to provide an off-line prediction method in the annealing process of bell-type furnace steel coils, which overcomes the fact that the off-line prediction calculation software in the prior art cannot adapt to changes in software, hardware and equipment performance in production and cannot be based on on-site operation conditions. Insufficient adjustment and setting of the annealing process process system

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