| 钙处理对含铝冷镦钢夹杂物的影响 |
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| 引用本文： | 董练德,陈伟庆,亓奉友,李文英,王广顺.钙处理对含铝冷镦钢夹杂物的影响[J].特殊钢,2010,31(6):32-34. |
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| 作者姓名： | 董练德 陈伟庆 亓奉友 李文英 王广顺 |
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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青岛钢铁集团公司技术中心，青岛266043 |
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| 摘 要： | 利用扫描电镜对80 t LF钢液喂钙处理前后的冷镦钢SWRCH22A中夹杂物形态和组成的变化进行了分析和研究,对钙处理钢中夹杂物的变性进行了热力学计算。研究表明,SWRCH22A钢液钙处理后夹杂物中的Mn被Ca置换,中间包内钢中Al2O3夹杂变性生成低熔点铝酸钙夹杂12CaO·7Al2O3;如要钢液钙处理生成易上浮排除的液态12CaO·7Al2O3夹杂的必要条件是Al]T2/Ca]T3≤10.58×104。
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| 关 键 词： | 冷镦钢 LF 钙处理 夹杂物变性 热力学计算 |
| 收稿时间： | 2010-05-20 |
Effect of Calcium Treatment on Inclusions in Cold Heading Steel Containing Aluminum |
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| Dong Liande,Chen Weiqing,Qi Fengyou,Li Wenying,Wang Guangshun.Effect of Calcium Treatment on Inclusions in Cold Heading Steel Containing Aluminum[J].Special Steel,2010,31(6):32-34. |
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| Authors: | Dong Liande Chen Weiqing Qi Fengyou Li Wenying Wang Guangshun |
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| Affiliation: | 1 School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083;
2 Technology Center, Qingdao Iron and Steel Group Co, Qingdao 266043 |
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| Abstract: | The change of morphology and ingredient of inclusions in cold heading steel SWRCH22 A before and after feeding calcium wire in 80 t LF liquid steel has been analyzed and studied by scanning electron microscope, and the thermodynamics calculation for modification of inclusions in steel by calcium treatment is carried out. Research results show that after calcium treatment of liquid steel SWRCH22A the Mn in incdusions is placed by Ca, the inclusion Al2O3 in liquid steel in tundish is modified to form low melting point calcium aluminate 12CaO·7Al2O3 ； and during calcium treatment of liquid steel the necessary condition to form easily floating up and removing liquid inclusion 12CaO·7Al2O3 is Al]T2/Ca]T3≤10.58×104. |
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| Keywords: | Cold Heading Steel LF Calcium Treatment Inclusion Modification Thermodynamics Calculation |
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