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Inspecting the current thickness of a refractory wall inside an operational blast furnace using the impact echo method

机译:使用冲击回波法检查运行中的高炉内部耐火墙的当前厚度

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摘要

In this study, a nondestructive testing method based on stress waves, the impact echo method, was applied to inspect the current thickness of a refractory wall inside a blast furnace. Blast furnaces are high-productivity structures that are prone to internal erosion hazards that majorly affect the lifespan of the blast furnace. Previous studies have applied heat flux and numerical methods to inspect the thickness of the refractory wall. Temperature variations were used to assess the condition of the blast furnace by installing an internal thermometer in the blast furnace during construction. However, these methods result in large errors. In this study, a simple formula using the thickness frequency obtained by the impact echo method was derived to back calculate the current thickness of the refractory wall inside a blast furnace. In this study, the inspection results of the experimental specimen and an in situ blast furnace also shows that inspecting the thickness of a refractory wall using the impact echo method offers substantial practical value.
机译:在这项研究中,基于应力波的无损检测方法,即冲击回波法,被用于检查高炉内部耐火墙的当前厚度。高炉是高生产率的结构,容易产生内部腐蚀的危险,从而严重影响高炉的使用寿命。先前的研究已经应用热通量和数值方法来检查耐火墙的厚度。通过在施工过程中在高炉中安装内部温度计,使用温度变化来评估高炉的状况。但是,这些方法会导致较大的错误。在这项研究中,得出了一个简单的公式,该公式使用了通过冲击回波法获得的厚度频率来反算高炉内部耐火墙的当前厚度。在这项研究中,实验样品和现场高炉的检查结果还表明,使用冲击回波法检查耐火墙的厚度具有很大的实用价值。

著录项

  • 来源
    《NDT & E international》 |2014年第9期|43-51|共9页
  • 作者单位

    Department of Civil Engineering, National Central University, Tao-Yuan 320, Taiwan;

    Department of Construction Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan;

    China Steel Corporation Non-Destructive Examination Unit, Kaohsiung 81233, Taiwan, ROC;

    China Steel Corporation Non-Destructive Examination Unit, Kaohsiung 81233, Taiwan, ROC;

    Department of Metallurgy, Dragon Steel Corporation, Taichung 40301, Taiwan, ROC;

    Department of Civil Engineering, National Central University, Tao-Yuan 320, Taiwan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Wall thickness; Blast furnace; Nondestructive testing; Impact-echo method;

    机译:室壁厚度;高炉;非破坏性测试;冲击回波法;
  • 入库时间 2022-08-17 13:24:37

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