Effects of Filling Pressure on the Flow Behaviors during Vacuum Counter-Pressure Casting Thin Wall Aluminum Alloy

Abstract:

The flow behaviors under different filling pressures were observed using electrode contact method. The relationships of recorded time and related point location were analyzed and deduced in terms of the flow tendency. The flow behavior figures were plotted at different time according the relationship. It was found that the unstable flow pattern takes place because filling cross-sectional area changes abruptly from the flow behavior figures. According to energy conservation and mass conservation theory, the relationship of flow velocity and filling pressure was established. Combining this relationship and critical flow velocity, the judgment equation of critical filling pressure was achieved.

• Periodical: Advanced Materials Research (Volumes 129-131)
• Pages: 185-188
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.129-131.185
• Online since: August 2010
• Authors: Bo Wen Xiong, Huan Yu, Qing Song Yan, Zhi Feng Xu, Chang Chun Cai, Bai Ping Lu, Guo Feng Liu
• Keywords: Counter Pressure Casting, Filling Pressure, Flow Behaviour, Wall Thickness

References

[1] J. Zuidema jr and L. Katgerman: Mater. Sci. Forum Vol. 396-402(2002), p.65.

[2] J. Ruynoro, S.M.A. Boutorabi and J. Campbell: AFS Trans Vol. 100 (1992), p.225.

[3] Q. S. Yan, Q. Z. Cai, B. K. Wei, H. Yu and Z. R. Yu: Trans Nonferrous Met Soc China Vol. 15(2005), p.873.

[4] X.L. Ma, Z. J. Zhu and W. B. Fang: Trans Nonferrous Met Soc China Vol. 13(2004), p.102 (in China).

[5] K. D. Li, M. C. Cheng and E. Chang: AFS Trans Vol. 01-026 (2001), p.311.

[6] J. C. Lee, H. K. Seok, and H. K. Lee: Met. Mater. Int Vol. 11 (2005), p.191.

[7] B. N. Lin: Metal hot forming transmission principle (Harbin Institute of Technology Press, China 2000).