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Abstract

A new method for continuous elimination of inclusions by using electromagnetic force was designed in this study. The principle is that as the electromagnetic force induced in metal scarcely acts on inclusions owing to their low electric conductivity; they are moved in the direction opposite electromagnetic force and can be separated from the melt. To do this, numerical analysis was conducted by employing the principle of electromagnetic braking. Numerical results agreed well with the experimental ones. Using the continuous electromagnetic separation system designed in this study, it was determined that Al₂O₃ particles whose size was larger than ∼ 14 μm immersed in flowing aluminium melt could be removed under the electromagnetic conditions (electric current density 7.96 × 10⁵ A m^-2, magnetic flux density 0.35 T) when the flow velocity was ∼ 150 mm s^-1.

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References

J. Jpn Inst. Light Met., 1989, 39, (9), 646–650.

MOHANTY

P. S.

, SAMUEL

F. H.

, and GRUZLESKI

J. E.

: Metall. Mater. Trans. B, 1995, 26B, (2), 103–109.

ECKERT

C. E.

: Proc. 3rd Int. Conf. on ‘Molten aluminium processing’, Orlando, FL, USA, November 1992, American Foundrymen's Society, 17–50.

ECKERT

C. E.

: Modern Casting, 1991, 4, 28–30.

SZEKELY

A. G.

: Metall. Trans. B, 1976, 7B, (7), 259–270.

SZTUR

, BALESTRERI

, MEYER

J. L.

, and HANNART

: Light Met, 1990, 709–716.

MARECHAL

et al.: Light Met., 1993, 907–913.

APELIAN

: Proc. 3rd Int. Conf. on ‘Molten aluminium processing’, Orlando, FL, USA, 1992, 1–15.

GROTEKE

D. E.

: Modern Casting, 1983, 4, 2527.

10.

KOLESNICHENKO

A. F.

and YU. M. GORISLAVETS: ‘Removing non-metallic inclusions from liquid aluminium’, UDC 669.715:621/ 74, 67-69; New York, NY, Allerton Press.

11.

ASAI

: J. Iron Steel Inst. Jpn, 1989, 75, (1), 32–41.

12.

PARK

J. P.

et al.: Proc. Int. Symp. on ‘Electromagnetic processing of materials’, Nagoya, Japan, April 1994, Iron and Steel Institute of Japan, 497–502.

13.

MARTY

: ‘Separation electromagnetique continue’, Theses de Docteur Ingenieur, University of Grenoble, France, 1982.

14.

KIM

J.-H.

, KIM

H.-J.

, PARK

J.-P.

, and YOON

E.-P.

: Proc. 6th Int. Conf. on ‘Aluminium alloys’, Toyohashi, Japan, July 1998, Japanese Institute of Light Metals, Vol. 4, 2107 — 2113.

15.

BLINOV

V. I.

, LEILPETERIS

, and MOREAU

: in ‘Liquid metal magnetohydrodynamics’, 91-96; 1989, Boston, MA, Kluwer Academic.

16.

THIBAULT

J. P.

and DECK

: in ‘Liquid metal magnetohydro-dynamics’, 119–125; 1989, Boston, MA, Kluwer Academic.

17.

KAMIYAMA

: JSME Int. J. II, 1992, 35, (2), 131–137.

18.

HUNT

J. C. R.

and LUDFOR

G. S. S.

: J. Fluid Mech., 1968, 33, 693 — 714.

19.

SEZGIN

, AGGARWALA

B. D.

, and ARIEL

P. D.

: Z. Math. Mech., 1988, 68, (7), 267–280.

20.

GIRSHICK

S. L.

and KRUGER

C. H.

: J. Fluid Mech., 1986, 170, 233–252.

21.

HUNT

J. C. R.

: J. Fluid Mech., 1968, 31, 705–722.

22.

ROHATGI

P. K.

et al.: Metall. Trans A, 1990, 21A, (7), 2073 —2082.

23.

MOREAU

: ‘Magnetohydrodynamics’, 113-150; 1990, Boston, MA, Kluwer Academic.

24.

SZEKELY

: ‘Fluid flow phenomena in metals processing’, 255–263; 1979, New York, NY, Academic.

25.

FERRARO

V. C. A.

and C. PLUMPTON. ‘An introduction to magneto-fluid mechanics’, 2nd edn, 55-60; 1996.

26.

VOV

D. LEE

and KOLIN

: J. Chem. Phys., 1954, 2Z (4), 683 — 688.

Continuous elimination of Al 2 O 3 particles in molten aluminium using electromagnetic force

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