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Early warning method and system for temperature of continuous annealing furnace

A technology for continuous annealing furnaces and annealing furnaces, applied in furnaces, heat treatment furnaces, furnace types, etc., can solve problems such as failure to meet high production requirements, failure to achieve early warning and reminders of deterioration trends, etc.

Active Publication Date: 2021-03-02
宝钢日铁汽车板有限公司 +2
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Problems solved by technology

[0005] In the above-mentioned prior art, the monitoring of the furnace temperature according to the process curve can only be used as an over-limit alarm, but cannot be used for early warning and deterioration trend reminder. The existing technology can no longer meet the production line with high production requirements.

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  • Early warning method and system for temperature of continuous annealing furnace
  • Early warning method and system for temperature of continuous annealing furnace
  • Early warning method and system for temperature of continuous annealing furnace

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Embodiment

[0074] The essence of the early warning of furnace health is the early warning of the important indicators of each furnace section. Therefore, the important parameters and reasonable ranges of each furnace section must be confirmed first. The specific content is shown in Table 1. Furnace section health evaluation program.

[0075] Table 1 Health evaluation scheme of each furnace section

[0076]

[0077] The electrical control unit of the cold rolling annealing furnace has two parts, namely DCS and PLC. Confirm the data address of the required process point and automatically collect this part of the process point. See Table 2, this part of the process points can include oxygen content, hydrogen content, dew point of furnace atmosphere, furnace pressure, target plate temperature, roller tension, steel coil number, furnace temperature, steel coil specification, unit speed, plate Gentle exhaust.

[0078] Table 2 Important process points and their corresponding addresses

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Abstract

The invention provides an early warning method and system for the temperature of a continuous annealing furnace. The early warning method comprises the steps that data are generated into samples according to different collecting time periods, data quality check is carried out on all the samples, a sample set is generated, the sample set is subjected to feature extraction, and stability and degradation tendency of the sample set is judged; and the furnace temperature change condition of each furnace section in the annealing furnace is predicted based on a BP neural network algorithm. Accordingto the method, a traditional alarm mode is combined with an SPC process control statistics and neural network prediction algorithm mode, trend prediction can be carried out on the health degree of thefurnace while over-limit alarm is achieved, and meanwhile, a BP neural network algorithm is adopted to predict the furnace temperature. The brand-new temperature health monitoring and early warning method is provided for the continuous annealing furnace of a hot galvanizing unit. The early warning system using the method can assist an operator in giving an alarm in advance and discovering a faultpoint in time when a problem occurs so as to strive for early discovery and early intervention.

Description

technical field [0001] The present invention relates to the field of cold rolling technology, in particular to a continuous annealing furnace (hot-dip galvanizing unit annealing furnace) furnace temperature (annealing furnace temperature) early warning method and system, suitable for automatic collection and storage of furnace data in a horizontal continuous annealing furnace, And through the BP neural network algorithm and the theoretical model of the SPC process control chart, the furnace steady state is pre-warned and monitored. Background technique [0002] Generally, a continuous annealing furnace is a device in which a heat treatment process is performed to increase or decrease the temperature of a room or low temperature metal strip according to a preset temperature scheme to obtain desired material properties. The continuous annealing furnace is mainly divided into a heating section and a cooling section. The heating section is divided into a preheating section, a he...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D11/00C21D1/26C21D9/52
CPCC21D11/00C21D1/26C21D9/52Y02P90/02
Inventor 王鲁祁鹏张世虎罗克炎杨玉林薛世旭张亚明
Owner 宝钢日铁汽车板有限公司
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