Turbulent Coagulation of Solid Particles in Molten Aluminium—Kinetics of Cluster Formation

et al. 2013

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Particle coagulation plays a key role in steel refining process to remove inclusions. Many research works focus on the behaviors of particle coagulation. To reveal its mechanism water model experiments have been performed by some researchers including the authors' group. In this paper, experiments of particle coagulation were carried out with molten Al including SiC particles in a mechanically agitated crucible with two baffles. Particle coagulation and formation of clusters were observed on the microscopy images of as-polished samples. Three-dimensional (3D) analysis of the clusters in solidified Al was implemented by X-ray micro CT available at SPring-8. The methods to distinguish clusters on two-dimensional (2D) cross-sectional images were discussed, which were established in the previous works by the present authors' group. The characteristics of the 3D SiC clusters and their 2D cross-sections were analyzed. The statistical ranges of the parameters for 2D clusters were used as criterions to distinguish the clusters on 2D microscopy images from the as-polished samples. The kinetics of SiC particle coagulation was studied by the measured cluster number density and size using our program to distinguish cluster in 2D crosssectional images according to 3D information (DC-2D-3D). The calculated and experimental results of the SiC particle coagulation in molten Al agree well with each other.

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Section: Quantitative Analysis Methods For Cluster Numbermentioning

confidence: 99%

Particle Coagulation in Molten Metal Based on Three-Dimensional Analysis of Cluster by X-Ray Micro-Computer Tomography (CT)

et al. 2013

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“…Tao LI, 1,2) * Shin-ichi SHIMASAKI, 1,3) Shoji TANIGUCHI, 1) Shunsuke NARITA 1,4) and Kentaro UESUGI 5) 1) Graduate School of Environmental Studies, Tohoku University, 6-6-20 Aoba-yama, Aoba-ku, Sendai, 980-8579 Japan.…”

Section: Three-dimensional Observation Of Nonmetallic Inclusion Clustmentioning

confidence: 99%

Three-dimensional Observation of Nonmetallic Inclusion Clusters in Solid Metal by X-ray Micro-CT

et al. 2016

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“…The cleanliness steel is a relative concept which has been greatly improved by the progress of steel refining techniques and equipment employing inclusion coagulation and bubble flotation. [4][5][6][7][8][9] To evaluate the steel refining techniques, it is critical to estimate the number density and the size distribution of the inclusion is steel samples.…”

Section: Introductionmentioning

confidence: 99%

Reliability of Inclusion Statistics in Steel by Stereological Methods

et al. 2016

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