| 灰铸铁厚大件共晶团粗大原因分析及消除方法 |
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| 引用本文： | 于英慧,许德隆.灰铸铁厚大件共晶团粗大原因分析及消除方法[J].现代铸铁,2008,28(6). |
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| 作者姓名： | 于英慧 许德隆 |
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| 作者单位： | 大连丸祐金属有限公司,辽宁,大连,116600 |
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| 摘 要： | 对加工表面出现"鱼鳞斑"缺陷的HT300中型平板铸件进行了化学分析和金相组织检验,结果发现"鱼鳞斑"实际上是粗大的共晶团.实践证明,使用冷铁提高冷却速度,足细化共晶团、消除"鱼鳞斑"最简单有效的方法.
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| 关 键 词： | 鱼鳞斑 共晶团 冷却速度 冷铁 |
The Reason Causing Coarse Eutectic Cells of Gray Iron and Prevention Measures |
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| YU Ying-hui,XU De-long.The Reason Causing Coarse Eutectic Cells of Gray Iron and Prevention Measures[J].Modern Cast Iron,2008,28(6). |
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| Authors: | YU Ying-hui XU De-long |
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| Affiliation: | YU Ying-hui,XU De-long (Dalian Wanyou Metal Co. Ltd.,Dalian 116600,China) |
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| Abstract: | In order to find out the reason causing fish scale-like specks on the machined surface of a medium size gray iron plate casting, microstructure and chemical composition of the casting was inspected. The metallographic inspection found that thefish scale peckswere actually coarse eutectic cells. Practice showed that using chills to increase cooling rate is the most simple and effective measure to eliminate this type of defect. |
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| Keywords: | fish scale peck eutectic cell cooling rate chill |
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