Metal founding – Process – With measuring – testing – inspecting – or condition determination
Patent
1995-11-03
1997-02-11
Hail, III, Joseph J.
Metal founding
Process
With measuring, testing, inspecting, or condition determination
164476, 164417, 164424, 1641541, B22D 1116, B22D 1112
Patent
active
056011385
ABSTRACT:
Method for the controlled pre-rolling of thin slabs (20) leaving a continuous casting plant, whereby the pre-rolling is carried out with a plurality of pairs of rolls (14-16), a first pre-rolling assembly (10) being positioned immediately downstream of foot rolls (12) of a mold (11), at least one displaceable roll (16) being included in the pairs of rolls (14-16), the pairs of rolls (14-16) being associated with pressure transducer (18) and hydraulic capsule (17), position transducer (24) being included. The pressure transducer (18) and position transducer (24) can be associated with a data processing unit (21), at least the first of the pairs of rolls (14-16) processing a slab (20) which has just emerged from the mold (11) with a thin solidified skin. The method achieves a pre-rolling with a reduction of the thickness of the slab (20) leaving the last pair of pre-rolling rolls (14-16) by at least 10% so as to eliminate the liquid core and to bring into contact the zones in a two-phase condition in order that the central solidification structure be refined and the central separation be minimized. Device suitable to carry out the controlled pre-rolling of thin slabs according to the above method, which comprises an element (25a) to monitor the temperature of the liquid bath in a tundish, an element (25b) to monitor the temperature of a slab (20), an element (26) to monitor the speed of the slab (20) and an element (28) to monitor the inclusion of a liquid cone.
REFERENCES:
patent: 4955428 (1990-09-01), Schrewe
patent: 5018569 (1991-05-01), Burau et al.
patent: 5058656 (1991-10-01), Hoffken et al.
Carboni Andrea
Coassin Giovanni
Di Giusto Bruno
Fasano Fulvio
Lavazza Alfredo
Danieli & C. Officine Meccaniche SpA
Hail III Joseph J.
Lin I.-H.
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