Appeal No. 2002-1447
Application 09/167,776
an oscillating rectangular mold having a concave inner
contour with a mold inlet having a mold inlet contour and a mold
outlet having a mold outlet contour, wherein said mold inlet
contour is larger than said mold outlet contour;
means for oscillating the mold, the oscillating means being
adjustable relative to frequency, stroke and mode of oscillation;
an immersion nozzle having a cross sectional area that is
less than 1/50 of a strand cross sectional area at the outlet of
the mold, the immersion nozzle being arranged to project into the
rectangular mold;
casting powder feed means for supplying powder to the mold
as a function of the stroke, mode and frequency of oscillation of
the mold so that a height of a slag layer proximate the upper
surface of said mold is greater than or equal to a height of a
portion of a strand shell which penetrates the slag layer during
oscillation of the mold; and
a cluster roll strand arranged downstream of the rectangular
mold and including two rolls adjustably arranged at a distance
from and opposite one another, and a hydraulic arrangement
operatively arranged to change the distance between the rolls in
a continuous manner.
THE REFERENCE
Ehrenberg et al., “Gießen und Gießwalzen dünner Brammen bei der
Mannesmannröhren-Werke AG”, 109 Stahl u. Eisen 453-62
(Dusseldorf, DE, 1989) (Stahl).1
1
1 Our consideration of Stahl is based upon the English
translation thereof which is of record.
2
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007