SOLID FEEDING MECHANISM AND ITS APPLICATION ON CASTINGS WITH LARGE HEIGHT-TO-DIAMETER RATIO

doi:10.11900/0412.1961.2016.00075

CORC > 金属研究所 > 中国科学院金属研究所

	SOLID FEEDING MECHANISM AND ITS APPLICATION ON CASTINGS WITH LARGE HEIGHT-TO-DIAMETER RATIO
	Chen Longfei; Luan Yikun; Li Dianzhong; Li Yiyi
刊名	ACTA METALLURGICA SINICA
	2016-12-12
卷号	52 期号:12 页码:1510-1516
关键词	casting shrinkage porosity solid feeding hydrostatic tension
ISSN号	0412-1961
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
内容类型	期刊论文
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.