| X射线断层扫描技术在铸坯质量检测上的应用 |
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| 引用本文： | 雷勋惠,张立峰,杨文,姜东滨,张献光.X射线断层扫描技术在铸坯质量检测上的应用[J].中国冶金,2020,30(12):44-51. |
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| 作者姓名： | 雷勋惠 张立峰 杨文 姜东滨 张献光 |
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| 作者单位： | 1.北京科技大学冶金与生态工程学院, 北京 100083;
2.燕山大学亚稳材料制备技术与科学国家重点实验室, 河北 秦皇岛 066004 |
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| 基金项目： | 国家自然科学基金资助项目(U1860206,51725402) |
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| 摘 要： | 为研究工业生产中连铸坯的质量,利用X射线断层扫描技术(CT)对连铸坯进行了宏观和微观质量的检测。主要对IF钢铸坯表层中的大颗粒夹杂物与气泡、微合金钢角部横裂纹以及重轨钢中心疏松进行了检测,并进行了三维重构。重构结果得到连铸坯内弧表层大尺寸夹杂物的三维形貌及数量、角裂纹的三维形貌和连铸坯中心疏松的三维形貌及致密度,这为连铸坯表面质量和内部质量的评价提供了参考。由CT分析结果可知,重轨钢连铸坯中心缺陷体积分数为0.33%,平均面致密度为96.6%。
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| 关 键 词： | 计算机断层扫描 连铸坯 三维表征 裂纹 夹杂物 中心疏松 |
Application of X-ray computed tomography (CT) to detect quality of continuous casting products |
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| LEI Xun-hui,ZHANG Li-feng,YANG Wen,JIANG Dong-bin,ZHANG Xian-guang.Application of X-ray computed tomography (CT) to detect quality of continuous casting products[J].China Metallurgy,2020,30(12):44-51. |
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| Authors: | LEI Xun-hui ZHANG Li-feng YANG Wen JIANG Dong-bin ZHANG Xian-guang |
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| Affiliation: | 1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing,Beijing 100083, China; 2. State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Hebei, China |
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| Abstract: | In the current study, the X-ray Computed Tomography (CT) was used to detect the quality of continuous casing products in industrial production, including large inclusions and bubbles within the subsurface of a continuous casting slab of IF steel, corner cracks of a micro-alloy steel continuous casting slab and central porosity of the continuous casting bloom a heavy rail steel, all of which were characterized in their real three-dimensional structures. The surface quality and the inner quality of continuous casing products could be quantitatively evaluated. For example, for the detected rail steel bloom, the central porosity was 0.33% in volume and the average compactness was 96.6%. |
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| Keywords: | computed tomography continuous casting product three-dimensional characterization crack inclusion central porosity |
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