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A Fast, Accurate, and Multi-Dimensional Evaluation Method for Liquid Level Fluctuation in the Mold of Continuous Casting Machines

A liquid level fluctuation and evaluation method technology, which is applied to the program control, instrument, program control and other directions in the sequence/logic controller, can solve the problems of insufficient accuracy and achieve the effect of reducing the quality loss of finished products and reducing quality loss

Active Publication Date: 2021-10-29
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problem of insufficient accuracy of the evaluation method for the liquid level fluctuation of the continuous casting machine crystallizer in the prior art, and intends to provide a fast, accurate and multi-dimensional evaluation method for the liquid level fluctuation of the continuous casting machine crystallizer. It can quickly and accurately evaluate the liquid level fluctuation of the continuous casting machine crystallizer, facilitate and timely deal with abnormal fluctuations, reduce quality loss, and improve production efficiency

Method used

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  • A Fast, Accurate, and Multi-Dimensional Evaluation Method for Liquid Level Fluctuation in the Mold of Continuous Casting Machines

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Effect test

Embodiment 1

[0040] The traditional method of evaluating mold liquid level fluctuations is to evaluate the mold liquid level fluctuations of pouring times and heats, which will result in downgrading treatment of cast slabs with normal mold liquid level fluctuations, resulting in quality loss; and the liquid level of each slab It is difficult to evaluate the severity of surface fluctuations, and disposal according to uniform standards will lead to an increase in billet disposal costs. However, in this embodiment, a fast, accurate, and multi-dimensional continuous casting machine crystallizer liquid level fluctuation evaluation method accurately matches the crystallizer liquid level fluctuation curve to the specific slab, so as to realize the accurate evaluation of the crystallization of each slab. Fluctuation of the liquid level of the device is beneficial to the subsequent disposal of the slab and the quality tracking in the subsequent process, reducing the quality loss of the slab and the ...

Embodiment 2

[0056] A fast, accurate, and multi-dimensional continuous casting machine crystallizer liquid level fluctuation evaluation method of this embodiment is basically the same as that of Embodiment 1, the difference is that the second-level PCS module in step (2) adopts the Oracle database method to store.

[0057] Unqualified proportional quality factor S of liquid level fluctuation in slab crystallizer 1 : Obtain the total number of points of the liquid level fluctuation deviation curve of the slab mold, expressed as ±X 1 mm is used as the standard for evaluating the liquid level fluctuation of the slab mold, where X 1 The range is (3-10) mm, specifically, X in this embodiment 1 is 5, and the deviation curve of the liquid level fluctuation of the cast slab exceeds ±X 1 The points in mm are unqualified points, and the ratio of unqualified points obtained by using unqualified points / total points is the unqualified proportion quality factor of liquid level fluctuation.

[0058] ...

Embodiment 3

[0067] A fast, accurate and multi-dimensional continuous casting machine crystallizer liquid level fluctuation evaluation method in this embodiment is basically the same as in Embodiment 1, the difference is that the unqualified proportion quality factor S of the billet crystallizer liquid level fluctuation 1 : Obtain the total number of points of the liquid level fluctuation deviation curve of the slab mold, expressed as ±X 1 mm is used as the standard for evaluating the liquid level fluctuation of the slab mold, where X 1 The range is (3-10) mm, specifically, X in this embodiment 1 is 10, and the deviation curve of the liquid level fluctuation of the cast slab exceeds ±X 1 The points in mm are unqualified points, and the ratio of unqualified points obtained by using unqualified points / total points is the unqualified proportion quality factor of liquid level fluctuation.

[0068] Also include step (6) slab quality assessment, disposal in the present embodiment:

[0069] Ac...

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Abstract

The invention discloses a fast, accurate and multi-dimensional continuous casting machine mold liquid level fluctuation evaluation method, which belongs to the technical field of mold liquid level fluctuation. The present invention comprises the following steps: (1) data acquisition of the first-level PLC module; (2) data acquisition of the second-level PCS module; (3) data matching of the data acquisition platform: according to the production start and end times of each slab, intercept the Corresponding mold liquid level fluctuation deviation curve; (4) Establish communication with the QMS management application platform: when the QMS management application platform receives the specific information of the casting billet sent by the secondary PCS module, it requests the corresponding fluctuation deviation from the data mining platform After receiving the request, the data acquisition platform transmits the corresponding fluctuation deviation curve to the QMS management application platform. The purpose of the present invention is to overcome the problem of insufficient accuracy of the evaluation method of the liquid level fluctuation of the continuous casting machine mold in the prior art, to be able to quickly and accurately evaluate the liquid level fluctuation of the continuous casting machine mold, and to facilitate timely disposal of abnormal fluctuations.

Description

technical field [0001] The invention relates to the technical field of crystallizer liquid level fluctuations, in particular to a fast, accurate and multi-dimensional evaluation method for crystallizer liquid level fluctuations of continuous casting machines. Background technique [0002] The mold is the heart of the continuous casting equipment. The liquid level fluctuation of molten steel in the mold directly affects the quality of the slab. With the intensification of the liquid level fluctuation of the mold, the probability of slag inclusion defects under the skin of the slab will increase significantly. Product quality has also deteriorated. At the same time, large fluctuations in the liquid level of the crystallizer may also cause vicious production accidents such as billet longitudinal cracks and breakouts, inclusions and breakouts. Therefore, the fluctuation of the mold liquid level will not only have a great impact on the quality of the slab, but also affect the st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05B22D11/18
CPCB22D11/18G05B19/054G05B2219/1103
Inventor 毛鸣张炯范海宁张立鑫赵啸熊华报白丽杨
Owner MAANSHAN IRON & STEEL CO LTD
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