| 53Cr21Mn9Ni4N方坯质量控制 |
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| 引用本文： | 黄小东,戴逸,陈又新.53Cr21Mn9Ni4N方坯质量控制[J].连铸,2013,32(6):38-42. |
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| 作者姓名： | 黄小东 戴逸 陈又新 |
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| 作者单位： | 中冶连铸技术工程股份有限公司工程二部，安徽 马鞍山 243000 |
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| 摘 要： | 53Cr21Mn9Ni4N奥氏体气阀钢在连铸生产过程中，铸坯容易出现中心疏松、缩孔、偏析和柱状晶发达及表面凹坑的质量缺陷；针对这些质量缺陷，采取调整钢液的过热度、冷却强度、拉速、结晶器电搅电流和末端电磁搅拌电流等措施后，极大改善了铸坯表面凹坑的质量缺陷，降低中心疏松、缩孔及偏析等质量缺陷。
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| 关 键 词： | 21-4N 中心缩孔 中心疏松 偏析 表面凹陷 |
Quality Control of the 53Cr21Mn9Ni4N Billet |
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| HUANG Xiao-dong,DAI Yi,CHEN You-xin.Quality Control of the 53Cr21Mn9Ni4N Billet[J].CONTINUOUS CASTING,2013,32(6):38-42. |
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| Authors: | HUANG Xiao-dong DAI Yi CHEN You-xin |
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| Affiliation: | The Second Engineering Department, CCTEC Engineering Co.,Ltd., Ma’anshan 243000, Anhui, China |
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| Abstract: | During the process of continuous casting production of the billet of 53Cr21Mn9Ni4N valve steel, a lot of quality flaws easily appear, such as center unsoundness, center void, segregation, rich columnar crystal and surface depression and so on, For these quality flaws, the surface depression was greatly improved, by adjusting overheat of liquid steel, the strength of cooling, pulling speed, M-EMS currency and F-EMS currency and so on. At the same time, center void and surface depression and so on were reduced significantly. |
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| Keywords: | 21-4N center void center unsoundness segregation surface depression |
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