WATER MODELING OF MOULD FILLING DURING SUCTION CASTING PROCESS OF AUTOMOTIVE EXHAUST VALVES OF gamma-TiAl BASED ALLOYS
文献类型：期刊论文
| 作者 | Xiong Chao; Ma Yingche; Chen Bo; Liu Kui; Li Yiyi |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2011-11-11 |
| 卷号 | 47期号:11页码:1408-1417 |
| 关键词 | gamma titanium aluminides automotive exhaust valves suction casting water modeling |
| ISSN号 | 0412-1961 |
| DOI | 10.3724/SP.J.1037.2011.00354 |
| 通讯作者 | Ma Yingche(ycma@imr.ac.cn) |
| 英文摘要 | Investment and suction casting represents a more cost effective route to produce automotive exhaust valves of gamma-TiAl based alloys, but the castings have severe gas porosities in the preliminary suction casting. It has been conferred that the generation of the porosity defects in the castings is a result directly associated with the entrapped air during filling flow. In order to investigate the filling patterns and the entrapped air during the suction casting process of automotive exhaust valves of gamma-TiAl based alloys, water modeling experiments have been done. The effect of three types of filling pressure control methods and two types of moulds on the filling patterns are systematically investigated in this paper. Results show that serious entrapped air occur during the filling flow with an rough pressure control method by means of the vents at the top of the moulds (called a general suction casting); Tranquil filling patterns are obtained under an accurate pressure control method ("gas charging" or "air leakage"), and if the gas charging flow is smaller than 1.7 m(3)/h or the air leakage flow is smaller than 1.5 m(3)/h, the entrapped air phenomenon disappear. Meanwhile, the general and the "air leakage" suction casting of TiAl automotive exhaust valves are implemented using the conclusions of the corresponding water modeling experiments, and the real casting results claim good qualitative agreement with that of the water modeling experiments. Finally, The reasonable explanation for the aforementioned results of the water modeling experiments is given using the filling kinetic principle of suction casting. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000299492300009 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/105709]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Ma Yingche |
| 作者单位 | Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiong Chao,Ma Yingche,Chen Bo,et al. WATER MODELING OF MOULD FILLING DURING SUCTION CASTING PROCESS OF AUTOMOTIVE EXHAUST VALVES OF gamma-TiAl BASED ALLOYS[J]. ACTA METALLURGICA SINICA,2011,47(11):1408-1417. |
| APA | Xiong Chao,Ma Yingche,Chen Bo,Liu Kui,&Li Yiyi.(2011).WATER MODELING OF MOULD FILLING DURING SUCTION CASTING PROCESS OF AUTOMOTIVE EXHAUST VALVES OF gamma-TiAl BASED ALLOYS.ACTA METALLURGICA SINICA,47(11),1408-1417. |
| MLA | Xiong Chao,et al."WATER MODELING OF MOULD FILLING DURING SUCTION CASTING PROCESS OF AUTOMOTIVE EXHAUST VALVES OF gamma-TiAl BASED ALLOYS".ACTA METALLURGICA SINICA 47.11(2011):1408-1417. |
入库方式： OAI收割
来源：金属研究所
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