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首页> 外文期刊>Journal of Process Control >Novel mold breakout prediction and control technology in slab continuous casting
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Novel mold breakout prediction and control technology in slab continuous casting

机译：板坯连铸结晶器开裂预测与控制新技术

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摘要

To realize smooth and high speed continuous casting, the urgent problem is to control the sticking-type breakout efficiently. In addition to improving casting process conditions of inducing stickers, the key is to develop active and accurate breakout prediction and healing control technology. In this paper, a novel logic judgment model for predicting stickers is presented, which is designed for more rows of thermocouples (TCs) in high density, and uses temperature change rate and vertical and horizontal detections to well recognize sticker propagation. Simulation results indicate that new model can accurately and timely detect all stickers, and has a good robustness. After sticking alarm, dynamic control strategies of casting speed according to the location of alarmed thermocouples are proposed for breakout prevention, by investigation on formation mechanism and recovery behavior of sticking-type breakout. The proposed model and control strategy have been validated through its application on a steel plant. The results show that the detection ratio for stickers and frequency of false alarm are 100% and 0.15% times/heat respectively, and the healing rate of the stickers has reached 100%. The case in which breakout still occurs after alarm has been eliminated. The present technology has achieved better performance in prediction and control of the sticking-type breakout and satisfies the requirement for field application. (C) 2015 Elsevier Ltd. All rights reserved.
机译：为了实现顺畅，高速的连铸，迫切需要解决的问题是有效地控制粘连式脱口。除了改善诱导贴的铸造工艺条件外，关键是要开发出主动且准确的断口预测和愈合控制技术。本文提出了一种新颖的用于预测贴纸的逻辑判断模型，该模型针对高密度的更多行热电偶（TC）设计，并利用温度变化率以及垂直和水平检测来很好地识别贴纸的传播。仿真结果表明，新模型能够准确，及时地检测出所有贴纸，并且具有良好的鲁棒性。通过对粘连型突触的形成机理和恢复行为进行研究，提出了在发生粘连报警后，根据报警热电偶的位置动态控制铸造速度的方法，以防止发生突触。通过在钢铁厂中的应用验证了所提出的模型和控制策略。结果表明，对贴纸的误检率和误报率分别为100％和0.15％/热，贴纸的治愈率达到100％。消除警报后仍然发生突破的情况。本技术在粘滞型突围的预测和控制中取得了更好的性能，并满足了现场应用的要求。 （C）2015 Elsevier Ltd.保留所有权利。

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