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Licensed Unlicensed Requires Authentication Published by De Gruyter December 20, 2021

Atomization Stage Analysis of Liquid Dynamic Compaction Process by Fractional Factorial Design

Moises Meza Pariona, Claudomiro Bolfarini and Claudio Shyinti Kiminami

Abstract

The liquid dynamic compaction comprises two consecutive stages, namely, atomization and deposition. The size of the droplets in the atomization stage strongly affects the quality of the product, which on its turn is controlled by the atomization process parameters. This work studied through two- level fractional factorial design the effect of the liquid metal over pressure, the pressure of the atomizing gas, length and diameter of the liquid metal discharge tube, the effective area of the atomizer nozzle gas outlet and the degree of super-heating of the liquid metal on the mean droplet size. The main parameters determining the mean droplet size showed to be the pressure of the atomizing gas and the diameter of the liquid metal discharge tube. The other parameters and their interactions only have a slight effect. To obtain smaller droplets the gas pressure should be maintained high and/or the diameter of the liquid metal discharge tube should be small.


M.M. Pariona Universidade Estadugal de Ponta Grossa Departamento de Engenharia de Materiais Campus Uvaranas, Bloco L, R. Nabuco de Aranjo s/n, Ponta Grossa-PR, Brazil
C. Bolfarini, C.S. Kiminami Universidade Federal de São Carlos Departamento de Engenharia de Materiais Via Washington Luiz, Km 235, CEP: 13565.905 São Carlos-SP, Brazil

  1. The authors acknowledge Jan Hendrik Schaay for his aid in the computational part of this work, CNPq and the PADCT-FINEP for supporting this project.

Literature

1 Marthur, P.; Annavarapu, S.; Apelian, D.; Lawley, A.: Mater. Sci. Engn. A 142 (1991) 261–276.Search in Google Scholar

2 Mathur, P.; Apelian, D; Lawley, A.: Acta metall. 37 (1989) 429– 443.Search in Google Scholar

3 Grant, P.S.; Cantor, B.; Katgerman, L.: Acta metall. mater. 41 (1993) 3097–3108.Search in Google Scholar

4 Gutierrez-Miravete, E.; Lavernia, E. J.; Trapaga, G.M.; Szehely, J; Grant, N.J.: Metall. Trans. A 20A (1989) 71–85.Search in Google Scholar

5 Kaufman, M.J.; Fraser, H.L.: in: E.W. Collings, C.C. Koch (eds.), Undercooled Alloy Phases: Undercooling and Microstructural Evolution in Glass Forming Alloys; The Metallurgical Society, Warrendale, PA (1987) 249–268.Search in Google Scholar

6 Ramachandrarao, P.; Cantor, B.; Cahn, R.W.: Non-Cryst. Solids 24 (1977) 109–120.Search in Google Scholar

7 Grant, P.S.; Cantor, B.; Katgerman, L.: Acta metall. mater. 41 (1993) 3109–3118.Search in Google Scholar

8 Grant, P.S.; Cantor, B.: Acta metall. mater. 43 (1995) 913–921.Search in Google Scholar

9 Box, G.E.; Hunter, W.G.; Hunter, J.S.: Statistics for Experimenters, John Wiley, New York (1978).Search in Google Scholar

10 Klar, E.; Fesko, J.W.: in: ASM Powder Metallurgy Committee (ed.), Atomization, Metals Handbook, 9th ed., Vol. 7, ASM, Metals Park, Ohio (1990) 25–51.Search in Google Scholar

11 Montgomery, D.C.: Design and Analysis of Experiments, John Wiley, New York (1991).Search in Google Scholar

Received: 1997-08-19
Published Online: 2021-12-20

© 1998 Carl Hanser Verlag, Munchen