Method for the production of a continously-cast precursor

Details Method for the production of a continously-cast precursor Method for the production of a continously-cast precursor

2005-02-22

2005-02-22

Dunn, Tom (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S437000, C222S606000, C222S591000

Reexamination Certificate

active

06857465

ABSTRACT:
A process for producing a continuous-casting plant for producing these products and a submerged nozzle therefor and a continuously cast primary product, in particular broad slabs, having a thickness of the primary product D>100 mm and a width of the primary product B=2700 mm to 3500 mm at a casting rate vc<2 m/min in a continuous-casting plant. To achieve uniform solidification conditions for the cast strand and uniform melting and distribution conditions for the casting powder, molten material leaves the submerged nozzle through opposite outlet openings with a momentum which is directed toward the narrow side walls a mold, and for a defined width:thickness ratio of the primary product, as a function of the ratio of the velocity of the molten material in the core cross section of the submerged nozzle (vk) to the casting rate (vc), design values for the width (b) of the submerged nozzle and the height (h) of the lateral outlet opening of the submerged nozzle are selected in such a way that a uniform strand shell is formed in the casting direction and peripheral direction along the wide side walls and narrow side walls of the permanent mold.

REFERENCES:
patent: 4858794 (1989-08-01), Sugiura et al.
patent: 6626229 (2003-09-01), Urlau et al.
patent: 19647363 (1998-05-01), None
patent: 19724232 (1998-12-01), None
patent: 19724232 (1998-12-01), None
patent: 0352346 (1990-01-01), None
patent: 01245951 (1989-10-01), None

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