| 弹簧钢连铸坯中心偏析的研究 |
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| 引用本文： | 蒋丽红,田乃媛. 弹簧钢连铸坯中心偏析的研究[J]. 钢铁, 2010, 45(1): 43-45 |
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| 作者姓名： | 蒋丽红 田乃媛 |
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| 作者单位： | 北京科技大学冶金工程研究院,北京,100083;北京科技大学冶金与生态工程学院,北京,100083 |
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| 基金项目： | 北京市科委高品质汽车用特殊钢的开发与应用(D0404001040221) |
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| 摘 要： | 为了探讨真空精炼和过热度对弹簧钢连铸坯中心偏析的影响,采用两种生产工艺:转炉→LF→VD→连铸和转炉→LF→连铸,并取不同的过热度(30℃和22℃),生产60Si2 Mn弹簧钢连铸坯。在矩形坯上取样分析碳和硫的偏析情况,并进行对比。其结果是:经过真空精炼,连铸坯的碳偏析指数从1.72降低到1.28;硫偏析指数从2.68降低到1.68。
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| 关 键 词： | 弹簧钢 真空精炼 过热度 中心偏析 |
Study of Centerline Segregation in Spring Steel Bloom |
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| JIANG Li-hong,TIAN Nai-yuan. Study of Centerline Segregation in Spring Steel Bloom[J]. Iron & Steel, 2010, 45(1): 43-45 |
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| Authors: | JIANG Li-hong TIAN Nai-yuan |
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| Affiliation: | 1.Metallurgical Engineering Research Institute;University of Science and Technology Beijing;Beijing 100083;China;2.School of Metallurgical and Ecological Engineering;China |
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| Abstract: | In order to discuss the effects of vacuum refining and superheat on spring steel bloom eenterline segrega-tion, two production processes are introduced, one is converter → LF → VD →continuous casting , the other is converter →LF→continuous casting. Different degrees of superheat at 30 ℃ and 22℃ were separately adopted to produce 60Si2Mn spring steel bloom. Two samples were taken in spring steel bloom, and the segregation of element C and S were analyzed. The results show that after vacuum refining, the biggest carbon segregation index dropped to 1.28 from 1.72, and the largest sulfur segregation index dropped to 1.68 from 2.68. |
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| Keywords: | spring steel vacuum refining superheat central segregation |
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