| S、Mg和RE含量对球铁球化率及性能的影响 |
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| 引用本文： | 孙雅心,李蒙,郭振廷. S、Mg和RE含量对球铁球化率及性能的影响[J]. 现代铸铁, 2006, 26(3): 44-45,48,50 |
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| 作者姓名： | 孙雅心 李蒙 郭振廷 |
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| 作者单位： | 郑州大学,材料工程学院,河南,郑州,450002 |
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| 摘 要： | 生产条件不同，球铁铸件性能的差异很大。分析球铁生产中S与Mg、RE的关系，以及这3个元素含量对球铁质量的影响。针对厚壁铸件中经常出现的碎块状石墨提出了相应的改进措施：适当增加碳，降低硅，提高残余Mg量，降低残余RE量，采用冷铁提高冷却速度。
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| 关 键 词： | 球墨铸铁 镁 稀土 |
| 文章编号： | 1003-8345（2006）03-0044-03 |
| 收稿时间： | 2005-12-28 |
| 修稿时间： | 2005-12-28 |
Influences of S,Mg and RE Contents on Nodularity and Properties of Ductile Iron |
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| SUN Ya-xin,LI Meng,GUO Zhen-ting. Influences of S,Mg and RE Contents on Nodularity and Properties of Ductile Iron[J]. Modern Cast Iron, 2006, 26(3): 44-45,48,50 |
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| Authors: | SUN Ya-xin LI Meng GUO Zhen-ting |
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| Affiliation: | School of Materials Science and Engineering,Zhengzhou University, Zhengzhou 450002, China |
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| Abstract: | Different production conditions could cause big difference in properties of ductile irons. The relationship between S, Mg and RE in ductile iron production, as well as influences of these 3 elements on the quality of ductile irons were analyzed. Some measures to prevent chunk graphite formation in heavy ductile iron were proposed as follows: properly increasing C content, decreasing Si content; enhancing residual Mg content; decreasing residual RE content; using chills to increase cooling rate. |
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| Keywords: | ductile iron Mg RE |
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