Heating furnace comprehensive optimizing controlling system designing and controlling method for hot rolling process

A technology for system design and optimal control, applied in general control systems, control/regulation systems, temperature control, etc., can solve the problem of not taking into account the inseparability of the close connection between the heating furnace and the rolling mill, and the inability to ensure that the hot rolling process always works. energy consumption, inability to achieve optimization of heating furnaces and roughing mills, etc.

Inactive Publication Date: 2005-07-27
DALIAN UNIV OF TECH
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Problems solved by technology

[0009] From the above analysis, it can be seen that the existing optimization control strategy for the heating furnace separates the heating process and the rolling process of the billet artificially, and does not take into account the close connection and control between the heating furnace and the rolling unit in the production process. Therefore, no matter what kind of optimization control is performed on the heating furnace, it can only be partially optimized, and the overall optimization of the heating furnace and the roughing rolling unit cannot be realized, so the minimum total energy consumption and the control effect of the hot rolling process cannot be guaranteed. optimal

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  • Heating furnace comprehensive optimizing controlling system designing and controlling method for hot rolling process
  • Heating furnace comprehensive optimizing controlling system designing and controlling method for hot rolling process
  • Heating furnace comprehensive optimizing controlling system designing and controlling method for hot rolling process

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Embodiment Construction

[0046] Specific embodiments of the present invention will be described in detail below in conjunction with technical solutions and accompanying drawings.

[0047] The heating furnace of a domestic medium and heavy plate factory is a six-stage walking heating furnace, and the rough rolling unit is a two-roll reversing rolling mill. The residence time of the billet in the furnace is 4 to 5 hours, rough rolling 5 times, the biting speed is 30 rpm, the stable rolling speed is 50 rpm, the throwing speed is 40 rpm, the rough rolling mill allows The rolling force is 24000KN, and water cooling is used between passes. The charging temperature of the steel billet is 25°C, and the furnace temperature is 1200°C-1250°C. The cross-sectional temperature difference of the billet should be less than 50°C when the billet is released from the furnace. The steel pushing speed of the heating furnace is 0.0021m / s~0.0028m / s, and the specification requirements of billets and rough rolling export bil...

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Abstract

A design and control method for the optimizing control system of intermediate rolling mill and heating furnace in order to improve the heating quality of billet in the heating furnace and save energy features that the heating furnace and intermediate rolling mill constitute a closed loop system, the information (rolling force, temp, etc) is fed back to heating furnace for dynamically changing the heating temp, and the optimizing control strategy and control algorithm are used in the billet heating process.

Description

technical field [0001] The invention belongs to the field of metallurgical automation process control, and relates to the design and control method of a new integrated optimization control system for a heating furnace in a steel billet hot rolling process. Background technique [0002] The heating furnace and rolling mill are important production equipment in the billet hot rolling production process, and are also the main energy-consuming equipment in the hot rolling process. The heating furnace provides the rolling mill with a steel billet with a temperature distribution that meets the requirements of the rolling process, and the rolling mill rolls the billet into high-quality rolled products according to customer requirements and rolling process requirements. The rolling energy consumption of the rolling mill depends on the heating quality of the slab. If the heating quality of the slab cannot meet the requirements of the rolling process, the worst case may lead to a roll...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/74G05B13/00
Inventor 邵诚张凯举金迪
Owner DALIAN UNIV OF TECH
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