Variation Mechanism of Aspiration Pressure at the Tip of Metal Delivery Tube in Supersonic Atomization

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The aspiration pressure variation at the tip of metal delivery tube in the supersonic atomization nozzle during gas-only atomization performance had been investigated in this work. The results reveal that the aspiration pressure is subambient at all operating pressures. A general trend is that with increasing atomization gas pressure, the value of aspiration pressure decreases at P0 between 0.5 and 1.5MPa, then increases as P0 ranges from 1.5~3.5MPa, finally decreases again at higher gas pressure (P0>~3.5MPa). When P0>2.0MPa, as the included angle α augments, the aspiration pressure ΔP increases. Meanwhile, the change range of aspiration pressure ΔP significantly enlarges when the jet included angle α raises from16 to 28º. The lager is the apex angle β of metal delivery tube, the greater is the aspiration pressure ΔP. And as the protrusion length of melt delivery tube h increases, the aspiration pressure ΔP decreases gradually.

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Periodical:

Materials Science Forum (Volumes 675-677)

Edited by:

Yi Tan and Dongying Ju

Pages:

1049-1052

Citation:

X. M. Zhao et al., "Variation Mechanism of Aspiration Pressure at the Tip of Metal Delivery Tube in Supersonic Atomization", Materials Science Forum, Vols. 675-677, pp. 1049-1052, 2011

Online since:

February 2011

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$38.00

[1] J. Ting and I.E. Anderson: Mater. Sci. Eng. A Vol. 379(2004), p.264.

[2] R. Ünal: J. Mater. Process. Tech. Vol. 180(2006), p.291.

[3] J. Ting, I. E. Anderson, R. Terpstra and J. Mi, in: Advances in Powder Metallurgy & Particulate Materials-1998, edited by J. J. Oakes and J. H. Reinshagen, Princeton, NJ: APMI-MPIF, Vol. 3, (1998).

[4] C. S. Cui, F. Y. Cao, and Q. C. Li: J. Mater. Process. Tech. Vol. 137(2003), p.5.

[5] J. C. Baram, M. K. Venstinen, E. J. Lavernia, M. Abinante: J. Mater. Sci. Vol. 23(1988), p.2457.

[6] M. K. Venstinen, E. J. Lavernia, M. Abinante and N. J. Grant: Mater. Lett. Vol. 5(1987), p.373.

[7] J. Baram: Mat. Sci. Eng. 98(1988), p.65.

[8] J. Ting, M. W. Peretti and W. B. Eisen: Mat. Sci. Eng. A Vol. 326(2002), p.110.

[9] N. Zeoli and S. Gu: Comp. Mater. Sci. Vol. 42(2008), p.245.

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