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Optimal control method of cold-rolling mill process cooling system

A technology for process cooling and optimal control, applied in the direction of temperature control, etc., can solve the problem of not mentioning the combination optimal control method, etc., and achieve the effect of realizing combination optimal control and satisfying good control.

Active Publication Date: 2014-06-18
北京邦信天硕工程技术有限公司
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Problems solved by technology

There is no mention of the combined optimization control method between the process cooling control of the cold rolling mill and the strip shape sub-cooling control described in this patent system, and no clear control is given for the coupling relationship between the two different process cooling control requirements and the emulsion flow rate usage model

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  • Optimal control method of cold-rolling mill process cooling system
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Embodiment Construction

[0041] The present invention will be described in more detail through the embodiments below in conjunction with the accompanying drawings.

[0042] The optimized control method of the process cooling system of the cold rolling mill, the combined optimal control of process cooling and segmental cooling is applied to the emulsion cooling control system of the fifth stand of a 1450 continuous cold rolling production line with five stands, and the process parameters are shown in Table 1:

[0043]

[0044] Table 1 rolling process parameters

[0045] The thickness of the strip steel at the entrance of the rolling mill is 0.43mm, the target thickness of the strip steel at the exit is 0.35mm, and the steel grade of the strip steel is SPCC. Substitute the above process and equipment parameters into the formula Finally, the calculated roll gap rate is 1814KW, and the relationship between the roll gap power and the minimum cooling capacity is passed figure 1 , the minimum amount of...

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Abstract

The invention discloses an optimal control method of a cold-rolling mill process cooling system. The method includes: calculation of rolling process cooling flow; calculation of stage-by-stage cooling shape control flow; and combination optimal control of basic cooling and stage-by-stage cooling. The invention puts forward calculation models which are respectively needed by cooling control for the cold-rolling mill process and stage-by-stage cooling control for shapes. Corresponding additional shape deviation is worked out according to emulsion cooling flow deviation and used for compensating the technological requirements of the basic cooling function and the stage-by-stage cooling function for shape control on the jetting of different emulsion flows in the process of cold rolling. Consequently, the optimal control of cooling flow in the two different technological functions is realized, the combination optimal control between basic cooling for the cold rolling process and stage-by-stage cooling for shapes is realized, and under the premise of ensuring cooling flow needed by stable rolling, the good control of strip shape quality is realized.

Description

technical field [0001] The invention belongs to the field of rolling process automation, and is suitable for a cold rolling mill process cooling control system and a strip steel section cooling control system, in particular to an optimal control method for the cold rolling mill process cooling system. Background technique [0002] Process cooling is an important feature of the strip cold rolling process, because a large amount of frictional work and deformation heat will be generated during the rolling process. The basic function of process cooling is to spray the emulsion with the concentration required by the rolling process onto the roll and strip under a certain flow and pressure, so as to ensure the working temperature of the roll and strip during the rolling process, and at the same time reduce the The rolling force generated by friction can be consumed. Therefore, ensuring the amount of emulsion injection required for basic rolling cooling is a prerequisite for the n...

Claims

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Application Information

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IPC IPC(8): B21B37/74
Inventor 宋蕾沈明钢陈雪波王军生
Owner 北京邦信天硕工程技术有限公司
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