Casting of metal

Details Casting of metal Casting of metal

1996-03-01

1998-02-24

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164428, 164472, B22D 1106, B22D 1107

Patent

active

057203369

ABSTRACT:
Method for continuously casting metal strip of the kind in which molten metal is introduced into the nip between a pair of parallel casting rolls (16) via a metal delivery nozzle (19) disposed above the nip to create a casting pool (30) of molten metal supported on casting surfaces (16A) of the rolls immediately above the nip and the casting rolls (16) are rotated to deliver a solidified metal strip (20) downwardly from the nip. The casting surfaces (16A) are smooth so as to have an Arithmetic Mean Roughness Value (R.sub.a) of less than 5 microns and the casting pool contains material to form on each of the casting surfaces a thin layer interposed between the casting surface and the casting pool during metal solidification a major proportion of which layer is liquid during the metal solidification and the liquid of the layer has a wetting angle of less than 40.degree. on the casting surface. This promotes wetting of the smooth casting surfaces and increases heat flux during metal solidification.

REFERENCES:
patent: 5520243 (1996-05-01), Freeman et al.

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