Closed loop control system for temperature and components of RH (Rockwell Hardness) molten steel

A technology of molten steel temperature and closed-loop control, which is applied in the general control system, control/regulation system, program control, etc., can solve the problems of low measurement data requirements, complex mechanism, and influence of analysis results, and achieve accurate forecasting, standardized operation, and automation high level effect

Inactive Publication Date: 2010-11-10
HEBEI SHOUGANG QIAN AN IRON & STEEL CO LTD +2
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Problems solved by technology

The distortion of the measured carbon content in the RH part is the main obstacle to the adjustment of the model parameters. The main reason is the influence of the addition of alloys in the later stage of decarburization, or the uneven distribution of carbon concentration in molten steel due to the return of carbon in the later stage of treatment, which affects the analysis results.
The advantage of the measurement-based method is that it is simple in principle and easy to implement, but it relies too much on the accuracy of the measurement data, making it difficult to implement in practice; the method based on presumption is just the opposite, with a complex mechanism but low requirements for measurement data, so the exhaust flow data will be used here as an indicator to compare

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  • Closed loop control system for temperature and components of RH (Rockwell Hardness) molten steel
  • Closed loop control system for temperature and components of RH (Rockwell Hardness) molten steel
  • Closed loop control system for temperature and components of RH (Rockwell Hardness) molten steel

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Embodiment Construction

[0044] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0045] The system automatically collects production information, assay components, and production plans through the L1 and L3 communication modules, and writes them into the L2 database; the monitoring module uses the information collected by the communication module to automatically judge each smelting step, and then starts the calculation of the set value; The carbon module is based on metallurgical principles and empirical operations, and provides real-time forecasting; the self-learning module uses statistics, analysis, and optimization of system parameters.

[0046] 1, the described closed-loop control system, concrete realization method is as follows:

[0047] The RH closed-loop control system is developed with VC and stored in ORACLE database. It is divided into two parts: client and background system. The background system includes dat...

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Abstract

The invention discloses a closed loop control system for the temperature and components of RH (Rockwell Hardness) molten steel, which belongs to the technical field of RH automatic control and comprises hardware and a software processing module for on-line detection, forecasting and controlling. The closed loop control system is characterized in that the hardware comprises a temperature-measuring and oxygen-determining robot and is connected with an RH production flow database through an Ethernet; and the software processing module comprises a data communication module, a monitoring module, a temperature module, a decarburizing module, a self-learning model, an alloy module and a historical data query module. The invention has the advantages of accurate forecasting, normalized production, high automation degree and closed loop control.

Description

technical field [0001] The invention belongs to the technical field of RH automatic control, and in particular provides a closed-loop control system for the temperature and composition of RH molten steel. Background technique [0002] The RH refining process is a metallurgical method that relies on the pressure difference between the vacuum chamber and the atmosphere to lift the molten steel in the ladle to the vacuum chamber, and continuously circulates the molten steel by blowing argon. This process is mainly used for dehydrogenation, denitrogenation, deoxidation, decarburization and desulfurization, and has the functions of alloy fine-tuning and temperature adjustment. With the development of the metallurgical industry, the requirements for steel quality are getting higher and higher, and its application has laid the foundation for steel mills to produce high value-added varieties of steel. Since the operation mode of RH production is relatively standardized, and the aut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D27/02G05B19/048
Inventor 胡丕俊蒋学军刘丹妹廖慧邱成国杨伟强李海森
Owner HEBEI SHOUGANG QIAN AN IRON & STEEL CO LTD
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