基于力反馈模型的板坯连铸液芯终点位置判定

金昕; 温习; 史学亮; 刘大伟; 任廷志

doi:10.13228/j.boyuan.issn0449-749x.20170584

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钢铁 ›› 2018, Vol. 53 ›› Issue (6) : 61-69. DOI: 10.13228/j.boyuan.issn0449-749x.20170584

炼钢

基于力反馈模型的板坯连铸液芯终点位置判定

金昕^1,2，温习^1,2，史学亮³，刘大伟^1,2，任廷志^1,2

作者信息 +

Solidification end position determination on dynamic soft reduction of continuous casting slabs based on force feedback model

金昕^1,2，温习^1,2，史学亮³，刘大伟^1,2，任廷志^1,2

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文章历史 +

摘要

为了更加准确地判断连铸轻压下过程中板坯的液芯凝固终点位置，从而确定合理的压下位置以及压下区间，改善连铸板坯产品质量，通过分析凝固坯壳在轻压下过程中的力学行为特性，建立基于力反馈的板坯轻压下液芯凝固终点位置动态判定模型。利用模型计算得到轻压下扇形段各夹辊支反力以及总支反力随液芯凝固终点位置的变化规律，通过分析液芯凝固终点位置变化时各夹辊支反力以及总支反力的变化规律，提出基于力反馈模型判定液芯凝固终点位置的方法，并通过射钉试验验证了力反馈模型的准确性。

Abstract

During slab continuous casting soft reduction process，in order to determine solidification end position more accurately，to ensure the reasonable reduction position and reduction section and improve the quality of products of the continuous casting slabs，the mechanical behavior characteristics of slab solidification shell was analyzed. A dynamic liquid core solidification end position prediction mathematical model based on force feedback was developed. The variable laws of reaction force on pinch rolls and total pressure of segment with the changing of solidification end position of liquid core were calculated by the mathematical model. According to those variable laws，the methods for determining solidification end position of liquid core were presented based on force feedback mathematical model. And the accuracy of force feedback mathematical model is verified by pin-shooting experiment.

关键词

板坯连铸 / 轻压下 / 液芯凝固终点 / 力反馈模型 / 射钉法

Key words

continuous casting slab / soft reduction / liquid core solidification end position / force feedback model / pin-shooting method

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金昕, 温习, 史学亮, 等. 基于力反馈模型的板坯连铸液芯终点位置判定[J]. 钢铁, 2018, 53(6): 61-69 https://doi.org/10.13228/j.boyuan.issn0449-749x.20170584

JIN Xin, YUN Xi, SHI Hua-Liang, et al. Solidification end position determination on dynamic soft reduction of continuous casting slabs based on force feedback model[J]. Iron and Steel, 2018, 53(6): 61-69 https://doi.org/10.13228/j.boyuan.issn0449-749x.20170584

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