SOLID FEEDING MECHANISM AND ITS APPLICATION ON CASTINGS WITH LARGE HEIGHT-TO-DIAMETER RATIO
文献类型：期刊论文
| 作者 | Chen Longfei; Luan Yikun; Li Dianzhong; Li Yiyi |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2016-12-12 |
| 卷号 | 52期号:12页码:1510-1516 |
| ISSN号 | 0412-1961 |
| 关键词 | casting shrinkage porosity solid feeding hydrostatic tension |
| DOI | 10.11900/0412.1961.2016.00075 |
| 通讯作者 | Luan Yikun(ykluan@imr.ac.cn) |
| 英文摘要 | Shrinkage porosity is one of major defects in castings, which seriously influences the quality of the castings. In general, the common method to eliminate this defect is to increase the liquid feeding ability of the casting through setting a riser in the corresponding position. However, for the casting with large height-to-diameter ratio, narrow and long feeding channel increases the flow resistance of the liquid metal in the late stage of the solidification. It is difficult to achieve a long-range liquid feeding, and the effect of the feeding is very little. Therefore, the penetrated shrinkage porosity in axis is frequently produced in the continuous casting ingots with large height-to-diameter ratio and large cross-section. As the liquid feeding mechanism has no effect on this problem, the solid feeding mechanism is proposed. First, the solid feeding mechanic is clarified by analyzing the effect of the hydrostatic tense stresses on the pore formation and the solid deformation. In addition, the ability of the solid feeding is determined by the value of the fracture of liquids, the content of the gas solute in liquid metal and yield strength of the solid. Then on the basis of this mechanism, reducing the temperature gradient in the radial direction of the casting is proposed to enhance the solid feeding ability. Finally, a verification experiment was conducted, and the results proved the function of the solid feeding on eliminating the shrinkage porosity defects. |
| 资助项目 | National Natural Science Foundation of China[51304185] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000391244600004 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/123558]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Luan Yikun |
| 作者单位 | Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen Longfei,Luan Yikun,Li Dianzhong,et al. SOLID FEEDING MECHANISM AND ITS APPLICATION ON CASTINGS WITH LARGE HEIGHT-TO-DIAMETER RATIO[J]. ACTA METALLURGICA SINICA,2016,52(12):1510-1516. |
| APA | Chen Longfei,Luan Yikun,Li Dianzhong,&Li Yiyi.(2016).SOLID FEEDING MECHANISM AND ITS APPLICATION ON CASTINGS WITH LARGE HEIGHT-TO-DIAMETER RATIO.ACTA METALLURGICA SINICA,52(12),1510-1516. |
| MLA | Chen Longfei,et al."SOLID FEEDING MECHANISM AND ITS APPLICATION ON CASTINGS WITH LARGE HEIGHT-TO-DIAMETER RATIO".ACTA METALLURGICA SINICA 52.12(2016):1510-1516. |
入库方式： OAI收割
来源：金属研究所
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