Optimizing melt tip geometry for high pressure gas atomization

被引：0

作者：

Ting, J ^{[1
]}

Mi, J ^{[1
]}

Anderson, IE ^{[1
]}

Terpstra, R ^{[1
]}

机构：

[1] Iowa State Univ, Met & Ceram Dept, Ames Lab, US DOE, Ames, IA 50010 USA

来源：

ADVANCES IN POWDER METALLURGY & PARTICULATE MATERIALS - 1997 | 1997年

关键词：

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Controlling aspiration at the melt tip is essential for gravity-fed, close-coupled, high pressure gas atomization. Aspiration base pressure in the HPGA-II nozzle, strongly influenced by the melt-tip geometry is studied in this paper. Developing an understanding of the gas flow field of an individual discrete convergent-divergent micro-jet used in the HPGA-II nozzle is essential for optimizing the melt-tip design. It is possible to predict an optimum melt tip length using only information about the gas flow features of a single discrete convergent-divergent micro-jet. Subambient aspiration base pressure was observed when a single micro-jet observations had indicated a strong Prandtl-Meyer expansion wave should be located adjacent to the melt tip in a fully assembled atomizer nozzle.

引用

页码：553 / 567

页数：15