RU62852U1 - INTERMEDIATE BUCKET FOR CONTINUOUS METAL CASTING - Google Patents

Abstract

The utility model can be used for continuous casting of steel. The technical task is to improve the quality of cast metal. An intermediate ladle for continuous casting of metal includes a lined body 1, inside of which casting glasses 2 are installed for supplying metal to the mold. The housing 1 is divided into a receiving 3 and casting 4 chambers of a vertically mounted transverse partition 5 with holes 6 for the passage of metal. On the side of the chamber 4, a central protrusion 7 is made on the lateral surface of the partition 5. On the upper end surface 8 of the partition 5, an end protrusion 9 is made in its middle part. On the side of the receiving chamber 3, the surface 10 of the partition 5 is made rectilinear. The bucket is equipped with support elements 11 installed in the casting chamber 4 with holes 12, 13 for the passage of metal. A recess is made in the middle part of the surface of the transverse partition 5 facing the receiving chamber 3. In this case, the recess is made in the form of upper and lower end surfaces and side faces. The intersection of the side faces forms the Central axis of the recess, located parallel to the vertical axis of the transverse septum 5. 2 ill.

Description

The utility model relates to metallurgy and can be used in continuous casting of metal.

An intermediate ladle for continuous casting is known, including a lined body, a zone of metal entry from a steel pouring ladle, immersion glasses, and a transverse vertical partition between the metal entry zone and the immersion nozzles with openings for the passage of metal, which is convex towards the moving metal stream (see RF patent No. 2038911, B22D 11/10).

The disadvantage of this bucket is the low quality of the cast metal as a result of the fact that when the metal is fed from the zone of its entry into the immersion nozzles, the metal flows are randomly distributed over the volume of the intermediate ladle, aiming for the next nozzles. In this case, structures of unstable vortices arise, which leads to random motion of the metal in the bucket and the subsequent tightening of non-metallic inclusions and slag into the metal.

The closest analogue to the claimed object is an intermediate ladle for continuous casting of metal, including a lined body, inside which there are casting glasses for supplying metal to the mold, forming a receiving and casting chamber, a vertically mounted transverse partition with holes for metal passage, on the surface of which from the casting side a central protrusion is made to the entire height of the partition, and on the upper end surface of the partition in its middle part the front ledge, the bucket is equipped with supporting elements installed in the casting chamber with holes for the passage of metal, while

from the receiving chamber, the surface of the transverse septum is made rectilinear (see RF patent No. 54320, B22D 41/00).

A disadvantage of the known intermediate ladle is the low quality of cast steel as a result of the fact that during operation of the ladle a transverse partition having a straight configuration on the side of the receiving chamber does not provide a rational scheme for damping unstable metal flows in the receiving chamber when it is fed from the steel pouring ladle during the whole metal casting cycle, which leads to the penetration of a significant amount of non-metallic inclusions into the cast metal.

The technical problem solved by the utility model is to improve the quality of cast steel.

The problem is solved in that the intermediate ladle for continuous casting of metal, including a lined case, inside which there are casting glasses for supplying metal to the mold, forming a receiving and casting chamber, a vertically mounted transverse partition with holes for metal passage, on the surface of which from the casting side the chamber is made to the full height of the septum, the Central protrusion, and on the upper end surface of the septum in its middle part made an end protrusion, with this ladle is equipped with support elements installed in the casting chamber with holes for the passage of metal, while on the receiving chamber side the surface of the transverse partition is made rectilinear, in contrast to the closest analogue, in the middle part of the surface of the transverse partition facing the receiving chamber, a recess is made in the form of an upper and the lower end surfaces and side faces, while the intersection of the side faces forms the Central axis of the recess, located parallel to the vertical axis of the transverse septum.

The utility model is illustrated by drawings, where:

figure 1 schematically shows an intermediate bucket, a top view;

figure 2 - view a is a transverse partition.

An intermediate ladle for continuous casting of metal includes a lined housing 1 (Fig. 1), inside which casting nozzles 2 are installed for supplying metal to the mold (not shown in Fig.). The housing 1 is divided into a receiving 3 and casting 4 cameras vertically mounted transverse partition 5 (Fig.1, 2) with holes 6 for the passage of metal. From the side of the casting chamber 4 (Fig. 1), on the side surface of the partition 5 (Figs. 1, 2), a central protrusion 7 (Fig. 2) is made to its entire height. The Central protrusion 7 of the partition 5 has a cross-sectional shape of a dihedral angle. On the upper end surface 8 of the partition 5 in its middle part an end protrusion is made 9. From the side of the receiving chamber 3 (Fig. 1), the surface 10 (Figs. 1, 2) of the partition 5 is made rectilinear. The bucket is equipped with support elements 11 installed in the casting chamber 4 (FIG. 1) with holes 12, 13 for the passage of metal. The supporting elements 11 can be made, for example, in the form of refractory plates. In the middle part of the surface of the transverse partition 5 (figure 2), facing the receiving chamber 3 (figure 1), a recess 14 (figure 2) is made. In this case, the recess 14 is made in the form of the upper 15 and lower 16 end surfaces and side faces 17 and 18. At the same time, the intersection of the side faces 17 and 18 forms the central axis 19 of the recess 14, which is parallel to the vertical axis 20 of the transverse partition 5.

An intermediate ladle for continuous casting of metal works as follows.

Pre-transverse partition 5 (figure 1) is installed in the cavity of the housing 1 of the bucket. The supporting elements 11 are installed in the casting chamber 4. After installing the partition 5 and the supporting elements 11 on the inner surface of the housing 1 (1) of the ladle, a layer is applied

refractory lining.

The metal from the steel pouring ladle (not shown in FIG.) Enters the inventive ladle, where it moves from the receiving chamber 3 (FIG. 1) to the casting chamber 4 and then through the casting glasses 2 to the mold (not shown). When the metal enters the receiving chamber 3, part of its flow moves to the bottom of the chamber 3 and enters the pouring chamber 4 through the openings 6 of the partition 5, and the second part of the metal flow moving towards the partition 5 is distributed by the end protrusion 9 (Fig. 2) into two flows, which contributes to a uniform distribution of metal in the casting chamber 4 (Fig.1) of the bucket. In this case, the metal flows moving from the side of the receiving chamber 3 act on the surface 10 (FIG. 2) of the partition 5 and its end protrusion 9. Performing in the middle part of the surface of the transverse partition 5 (FIGS. 1, 2) facing the receiving chamber 3 (FIG. .1) the recess 14 (figure 2) helps to quench unstable metal flows in the receiving chamber when it is fed from the steel pouring ladle during the entire metal casting cycle. This provides a system for the rational distribution of steel flows during its casting, as a result of which, the tightening of non-metallic inclusions and slag particles in steel is significantly reduced. All this helps to reduce non-metallic inclusions in the cast metal during the entire cycle of work and to improve the quality of steel.

Claims (1)

An intermediate ladle for continuous casting of metal, including a lined case, inside which there are casting glasses for supplying metal to the mold, forming a receiving and casting chamber, a vertically mounted transverse partition with holes for the passage of metal, on the surface of which from the side of the casting chamber the whole height of the partition is made a central protrusion, and on the upper end surface of the partition in its middle part an end protrusion is made, the bucket is equipped with casting the chamber supporting elements with holes for the passage of metal, while from the side of the receiving chamber, the surface of the transverse partition is made rectilinear, characterized in that in the middle part of the surface of the transverse partition facing the receiving chamber, a recess is made in the form of upper and lower end surfaces and side faces, with this intersection of the side faces forms the Central axis of the recess, located parallel to the vertical axis of the transverse septum.