Preheating furnace control method and system

Abstract

A preheating furnace control method, executed by a processor, includes: inputting steel strip data and a plurality of candidate preheating parameter sets for heating steel coils in the preheating furnace into a steel strip temperature prediction model to generate a plurality of predicted steel strip preheating temperatures, wherein the steel coil is an unwound steel strip; when one of the plurality of predicted steel strip preheating temperatures is higher than the brittle transition temperature of the steel strip, using one of the plurality of candidate preheating parameter sets corresponding to one of the plurality of predicted steel strip preheating temperatures as a preheating parameter set; and controlling the preheating furnace to heat the steel coil using the preheating parameter set.

Claims

1. A preheating furnace control method, executed by a processor, comprising the following operations: inputting strip data of a steel strip and a plurality of candidate preheating parameter sets for heating a steel coil in a preheating furnace into a strip temperature prediction model to generate a plurality of predicted strip preheating temperatures, wherein the steel coil is the unwound strip; when one of the plurality of predicted strip preheating temperatures is higher than a brittle transition temperature of the strip, taking one of the plurality of candidate preheating parameter sets corresponding to the predicted strip preheating temperature as a preheating parameter set; and controlling the preheating furnace to heat the steel coil using the preheating parameter set.

2. The preheating furnace control method as described in claim 1 further includes the following operation: training the steel strip temperature prediction model with a historical steel strip dataset, wherein the historical steel strip dataset includes steel strip data corresponding to a plurality of historical steel strips, a set of historical preheating parameters, and a set of historical steel strip preheating temperatures.

3. The preheating furnace control method as described in claim 2, wherein the historical preheating parameter set includes a furnace seat number of at least one furnace seat in the preheating furnace and a holding period for the preheating furnace to maintain a maximum temperature.

4. The preheating furnace control method as described in claim 1, wherein the steel strip data includes at least one of a steel strip composition, a steel strip code, a steel coil size, a steel strip size, a steel strip weight, and a number of times the strip enters the preheating furnace.

5. The preheating furnace control method as described in claim 1, wherein each of the plurality of candidate preheating parameter groups includes a furnace seat number of at least one furnace seat in the preheating furnace and a holding time for the preheating furnace to maintain a maximum temperature.

6. The preheating furnace control method as described in claim 5 further includes the following operation: when a plurality of the plurality of predicted steel strip preheating temperatures are higher than the brittle transition temperature of the steel strip, one of the plurality of candidate preheating parameter groups with the shortest corresponding holding time is selected as the preheating parameter group from the plurality of predicted steel strip preheating temperatures.

7. The preheating furnace control method as described in claim 1, wherein each of the plurality of predicted steel strip preheating temperatures is the lowest steel strip temperature predicted by the steel strip temperature prediction model after the steel strip is preheated and unwound with the corresponding plurality of candidate preheating parameter sets.

8. A preheating furnace control system, comprising: a preheating furnace for heating a steel coil according to a set of steel strip preheating parameters, wherein the steel coil is an unwound steel strip; a processor connected to the preheating furnace, the processor being configured to perform the following operations: inputting steel strip data and a plurality of candidate preheating parameter sets for heating the steel coil into a steel strip temperature prediction model to generate a plurality of predicted steel strip preheating temperatures; when one of the plurality of predicted steel strip preheating temperatures is higher than a brittle transition temperature of the steel strip, using one of the plurality of candidate preheating parameter sets corresponding to the one of the plurality of predicted steel strip preheating temperatures as a preheating parameter set; and controlling the preheating furnace to heat the steel coil using the preheating parameter set.

9. The preheating furnace control system as described in claim 8, wherein the processor is further configured to perform the following operations: train the strip temperature prediction model with a strip historical dataset, wherein the strip historical dataset includes strip data corresponding to a plurality of historical strips, a set of historical preheating parameters, and a set of historical strip preheating temperatures.

10. The preheating furnace control system as claimed in claim 8, wherein each of the plurality of candidate preheating parameter groups includes a furnace seat number of at least one furnace seat in the preheating furnace and a holding time for the preheating furnace to maintain a maximum temperature.

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