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首页> 外文期刊>ISIJ international >A Novel Measurement of Voidage in Coke and Ferrous Layers in Softening and Melting under Load Test Using Synchrotron X-ray and Neutron Computed Tomography
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A Novel Measurement of Voidage in Coke and Ferrous Layers in Softening and Melting under Load Test Using Synchrotron X-ray and Neutron Computed Tomography

机译：同步加速器X射线和中子计算机断层扫描在负荷试验下软化和熔化中焦炭和亚铁层空隙率的新方法

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摘要

For the first time, the bed voidage of samples from interrupted softening and melting (S&M) under load tests was measured directly using computed tomography (CT). The large size, fused structure and high metallic iron content of the samples required the very high energy synchrotron X-ray source for scanning; samples produced at higher temperatures, e.g., 1 450°C, required neutron CT to allow adequate penetration of the samples. This method was able to uniquely and accurately identify the volumes, distributions, and structures of coke, ferrous, and void in the S&M samples, and quantify the tortuosity of the voids. This information is critical for analysis of the pressure drop-contraction relationship in the S&M under load test, and will allow the improvement of the treatment of the cohesive zone in numerical models of the blast furnace.
机译：首次直接使用计算机断层扫描（CT）测量了载荷测试下中断的软化和熔化（S＆M）产生的样品的床空隙率。样品的大尺寸，熔融结构和高金属铁含量需要非常高能量的同步加速器X射线源进行扫描；在较高温度（例如1 450°C）下生产的样品需要使用中子CT才能使样品充分渗透。该方法能够唯一，准确地识别S＆M样品中焦炭，铁和空隙的体积，分布和结构，并量化空隙的曲折度。此信息对于分析S＆M在负载测试下的压降-收缩关系至关重要，并将有助于改进高炉数值模型中的粘聚区处理。

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