Study on electromagnetic ultrasonic testing method for determining solidified shell thickness during continuous casting

2018 Chinese Control And Decision Conference (CCDC) Pub Date : 2018-06-01 DOI:10.1109/CCDC.2018.8407260

Qi Ouyang, Mengxue Hu, Xinglan Zhang, Siming Wei, Wen-qiang Peng

{"title":"Study on electromagnetic ultrasonic testing method for determining solidified shell thickness during continuous casting","authors":"Qi Ouyang, Mengxue Hu, Xinglan Zhang, Siming Wei, Wen-qiang Peng","doi":"10.1109/CCDC.2018.8407260","DOIUrl":null,"url":null,"abstract":"One of the areas in the high-temperature continuous casting process that has not been definitively addressed is a method for accurately determining of solidified shell thickness. Therefore, this paper investigates a novel method for non-destructive detection of the solidified shell thickness based on the electromagnetic ultrasonic (EMA) technology. In this method, an electromagnetic ultrasonic transducer (EMAT) was utilized for exciting ultrasonic waves in the continuous casting slab. According to the fact that the propagation velocity of ultrasonic waves is a considerable difference in the solid and liquid metal, the TOF delay caused by the reflection and refraction at a solid-liquid interface of ultrasonic waves has been analyzed. Furthermore, studies on the effect of solidification shell thickness on ultrasonic echoes have been carried out by finite element simulation. Through the construction of the experimental platform, the measured data show close agreement with the simulation results and thus verify the reasonable and feasible of the proposed method which can provide reference for on-line detection of solidified shell thickness during continuous casting.","PeriodicalId":409960,"journal":{"name":"2018 Chinese Control And Decision Conference (CCDC)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 Chinese Control And Decision Conference (CCDC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CCDC.2018.8407260","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

One of the areas in the high-temperature continuous casting process that has not been definitively addressed is a method for accurately determining of solidified shell thickness. Therefore, this paper investigates a novel method for non-destructive detection of the solidified shell thickness based on the electromagnetic ultrasonic (EMA) technology. In this method, an electromagnetic ultrasonic transducer (EMAT) was utilized for exciting ultrasonic waves in the continuous casting slab. According to the fact that the propagation velocity of ultrasonic waves is a considerable difference in the solid and liquid metal, the TOF delay caused by the reflection and refraction at a solid-liquid interface of ultrasonic waves has been analyzed. Furthermore, studies on the effect of solidification shell thickness on ultrasonic echoes have been carried out by finite element simulation. Through the construction of the experimental platform, the measured data show close agreement with the simulation results and thus verify the reasonable and feasible of the proposed method which can provide reference for on-line detection of solidified shell thickness during continuous casting.

查看原文本刊更多论文

电磁超声检测连铸凝固壳厚度的方法研究

在高温连铸工艺中尚未得到明确解决的一个领域是精确确定凝固壳厚度的方法。为此，本文研究了一种基于电磁超声(EMA)技术的固化壳体厚度无损检测新方法。该方法利用电磁超声换能器对连铸板坯进行超声激励。根据超声波在固体金属和液态金属中传播速度有较大差异的事实，分析了超声波在固液界面处的反射和折射引起的TOF延迟。此外，采用有限元模拟方法研究了凝固壳厚度对超声回波的影响。通过实验平台的搭建，实测数据与仿真结果吻合较好，验证了所提方法的合理性和可行性，可为连铸过程中凝固壳厚度的在线检测提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2018 Chinese Control And Decision Conference (CCDC)

自引率

0.00%

发文量