Dispensing – Molten metal dispensing – With subjacent flow guide
Patent
1995-08-08
1998-02-10
Batten, Jr., J. Reed
Dispensing
Molten metal dispensing
With subjacent flow guide
164437, 222594, B22D 4150
Patent
active
057165386
ABSTRACT:
The nozzle (10) preferably, but not only, for the production of blooms, billets and conventional, medium and thin slabs, which is suitable to cooperate with a feeder for liquid steel and to discharge that liquid steel into a mould, has a discharge outlet positioned below the meniscus (20). The discharge nozzle (10) includes a first upper intake pipe (11) defining a conduit having a dimension of its cross-section equal to (S) and a nominal diameter (D), the first upper intake pipe (11) being associated at its lower end with a second introduction pipe (12), this second introduction pipe (12) possessing a nominal dimension of its internal passage having a minimum cross-section of 5S in the event of production of blooms, billets or round bars and of 4S in the event of production of conventional, medium and thin slabs. The second introduction pipe (12) comprises at a position in the vicinity of the outlet (14) of the first pipe (11) a divider plate (13) dividing the flow and cooperating with, and defining on its lower side, a flow expansion chamber (15) within the second pipe (12), the flow expansion chamber (15) having a minimum length of 5D in the event of production of blooms and billets and of 10D in the event of production of conventional, medium and thin slabs.
REFERENCES:
patent: 2891291 (1959-06-01), Schnacke
patent: 3050792 (1962-08-01), Lipman et al.
patent: 3669181 (1972-06-01), Schrewe
patent: 3738419 (1973-06-01), Hartman et al.
patent: 5314099 (1994-05-01), Butz et al.
patent: 5402993 (1995-04-01), Hofmann et al.
patent: 5429283 (1995-07-01), Luhrsen et al.
Abstract of U.S.S.R. Inventor's Certificate 532536 Published Jul. 7, 1984.
Kapaj Nuredin
Pavlicevic Milorad
Poloni Alfredo
Batten, Jr. J. Reed
Danieli & C. Officine Meccaniche SpA
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