| 船板钢铸坯中大型夹杂物的分析 |
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| 引用本文： | 亓伟伟,杨旭,亓昌秋.船板钢铸坯中大型夹杂物的分析[J].连铸,2014,33(6):46-49. |
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| 作者姓名： | 亓伟伟 杨旭 亓昌秋 |
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| 作者单位： | 1. 莱芜钢铁集团有限公司技术中心，山东 莱芜 271104 2. 莱芜钢铁集团有限公司生产处，山东 莱芜 271104 |
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| 摘 要： | 为了解船板钢铸坯中夹杂物含量、尺寸及来源，采用大样电解法提取B、D船板钢铸坯中的大型夹杂物，利用扫描电镜和能谱仪对夹杂物的形貌和组成进行分析，并对尺寸大于50 μm的夹杂物的来源进行了分析。试验结果表明，在铸坯宽度1/4处夹杂物含量最高。铸坯中尺寸大于50 μm的大型夹杂物主要来源于浇铸过程的卷渣，其余为LF精炼过程对钢中夹杂物进行钙处理的产物、浸入式水口及耐火材料侵蚀产物、钢液二次氧化产物。
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| 关 键 词： | 铸坯 大样电解 夹杂物 卷渣 |
Analysis of Large Inclusions in Ship Plate Steel Casting Slab |
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| QI Wei-wei,YANG Xu,QI Chang-qiu.Analysis of Large Inclusions in Ship Plate Steel Casting Slab[J].CONTINUOUS CASTING,2014,33(6):46-49. |
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| Authors: | QI Wei-wei YANG Xu QI Chang-qiu |
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| Affiliation: | 1. Technology Center，Laiwu Iron and Steel Group Corporation，Laiwu 271104, Shandong, China 2. Production Department，Laiwu Iron and Steel Group Corporation，Laiwu 271104, Shandong, China |
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| Abstract: | In order to know the content, size and source of inclusions in ship plate steel casting slab, large inclusions of B, D ship plate steel casting slabs were extracted by the means of large sample electrolysis. Appearances and components of inclusions were analyzed using SEM（Scanning Electron Microscope）and EDS（Energy Dispersive Spectrometer）. And sources of inclusions larger than 50 μm were analyzed. The results show that the maximum inclusion content appears in the width 1/4 of slab. Inclusions larger than 50 μm in the slab mainly come from slag entrapment in casting process. Others are products of calcium treatment for inclusions in steel during LF refining process, erosion of submerged nozzle and refractory, and secondary oxidation of liquid steel. |
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| Keywords: | casting slab large sample electrolysis inclusion slag entrapment |
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