| 球墨铸铁件冒口补缩失败原因分析--球墨铸铁缩松、缩孔问题探讨(二) |
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| 引用本文： | 周亘. 球墨铸铁件冒口补缩失败原因分析--球墨铸铁缩松、缩孔问题探讨(二)[J]. 现代铸铁, 2004, 24(4): 7-14 |
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| 作者姓名： | 周亘 |
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| 作者单位： | 中国第一汽车集团,解放汽车有限公司,无锡柴油机分公司,江苏,无锡,214026 |
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| 摘 要： | 除铸型刚度和铁液冶金质量外．球铁件冒口补缩失败的原因主要是：①采用冷冒口和明冒口；⑦冒口设置位置不当：③冒日直径或，和高度偏小；④内浇道不能在浇注结束时及时凝固；⑤铸件存在与冒口补缩通道不相通的孤立热节；⑥薄、小件补缩通道窄小．冒口补缩不进等。
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| 关 键 词： | 球墨铸铁 冒口 补缩 缩松 缩孔 铸造 |
| 文章编号： | 1003-8345(2004)04-0007-08 |
Analysis of Reasons Causing Riser/Feeder Feeding Failure in Nodular Iron Castings Production--An Approach to Shrinkage Problems of Nodular Cast Iron (Ⅱ) |
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| ZHOU Gen. Analysis of Reasons Causing Riser/Feeder Feeding Failure in Nodular Iron Castings Production--An Approach to Shrinkage Problems of Nodular Cast Iron (Ⅱ)[J]. Modern Cast Iron, 2004, 24(4): 7-14 |
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| Authors: | ZHOU Gen |
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| Abstract: | In addition to mould rigidity and metallurgical quality of molten iron, the main reasons causing riser/feeder feeding failure in nodular iron castings production are:(a)open and cold metal flowing-off risers were used; (b)feeder location not proper; (c)feeder too small or/and too low; (d)ingates couldn't freeze up instantly after pouring stopped; (e)there're isolated hot spots in the casting which weren't connected with feeding channel of the feeder ;(f)fceding channel of small and thin section castings too nar-row for feeding liquid to enter into castings;and so on. |
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| Keywords: | nodular iron shrinkage feeding |
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