RU60411U1 - 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. From the side of the casting chamber 4, a central protrusion 7 is made to its entire height on the side surface of the partition 5. The protrusion 7 of the partition 5 has a dihedral angle in cross section. On the upper end surface 8 of the partition 5 in its middle part is made an end protrusion 9. From 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 for the passage of metal. The supporting elements 11 can be made, for example, in the form of refractory plates. In the lateral surface of the partition 5, from the side of the casting chamber 4, vertical grooves 12 are made, with protrusions 13 and 14 in the lower part 15 of the partition 5. Support elements 11 are installed in the cavities of the vertical grooves 12, with cutouts 17 containing in their lower part mating 17 with protrusions 13 and 14 in the vertical grooves of the partition 5. 3 ill.

Description

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

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, B 22 D 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 of the claimed object is an intermediate ladle for continuous casting of metal, including

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, a central protrusion is made to the entire height of the partition, and on the upper end surface In the middle part of the partition, an end protrusion is made, while the bucket is equipped with supporting elements installed in the casting chamber with openings for passage m thallium (see. №54320 RF patent At 22 D 41/00).

A disadvantage of the known intermediate ladle is the low quality of the cast steel as a result of the fact that during operation of the ladle the transverse partition quickly loses stability during casting, due to unreliable fixation, and pops up. This leads to a change in the uniformity of the distribution of steel flows over the pouring glasses of the bucket. In this case, the distribution pattern of the motion of flooded steel jets is violated, which leads to the penetration of a significant number 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 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 the passage of metal, on the surface of which, from the side of the casting chamber, a central protrusion is made to the entire height of the partition, and an end protrusion is made on the upper end surface of the partition in its middle part, while the bucket is equipped with installed in the casting chamber supporting elements with holes for the passage of metal, according to the change, in the lateral surface of the partition, from the side of the casting chamber, are made ikalnye grooves, with the protrusions in the lower part of the partition, wherein in the cavities of the vertical grooves installed support members, with containing in its lower portion cutouts mating with projections in vertical partition grooves.

The utility model is illustrated by drawings, where:

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

figure 2 is a transverse partition in isometry;

figure 3 - supporting element in isometry.

An intermediate ladle for continuous casting of metal includes a lined body 1 (Fig. 1), inside of which casting glasses 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 (figure 1) on the side

the surface of the partition 5 (figure 1, 2) is made to its entire height, the central protrusion 7 (figure 2). 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 of the partition 5 is made rectilinear. The bucket is equipped with support elements 11 (FIGS. 1, 3) installed in the casting chamber 4 with holes 12 (FIG. 3) for the passage of metal. The supporting elements 11 (Fig.1, 3) can be made, for example, in the form of refractory plates. In the lateral surface of the partition 5 (figure 1, 2), from the side of the casting chamber 4 (figure 1), vertical grooves 12 (figure 2) are made, with protrusions 13 and 14 in the lower part 15 of the partition 5 (figure 1) . In the cavities of the vertical grooves 12 (Fig. 2), support elements 11 (Figs. 1, 3) are installed, with cutouts 17 in their lower part 16 (Fig. 3), mating with the protrusions 13 (Fig. 2) and 14 in the vertical partition grooves 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. In this case, the supporting elements 11 are fixed on one side in the vertical grooves 12 (figure 2), and the other rest on the walls of the housing 1 (figure 1). When installing the support elements 11

relative to the partition 5, the cut-outs 17 (FIG. 3) of the elements 11 are mated with the protrusions 13 (FIG. 2) and 14 of the partition 5. After installing the partition 5 and the supporting elements 11, a layer of refractory lining is applied to the inner surface of the casing 1 (FIG. 1).

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. 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 rectilinear surface 10 of the partition 5 and its end protrusion 9 (Fig. 2). The cutouts 17 (figure 3) of the supporting elements 11 (figure 1, 3) are mated with the protrusions 13 (figure 2) and 14 of the partition 5. The application of the proposed system of pairing cutouts 17 (figure 3) with the protrusions 13 (figure 2) and 14, contributes to reliable fixation of the transverse partition and the supporting elements relative to each other, as well as the creation of a uniform distribution pattern of flooded jets of steel on the pouring glasses 2 of the ladle during the entire operation cycle, resulting in tightening

non-metallic inclusions and particles of slag in steel are significantly reduced. The execution in the Central protrusion 7 (figure 2) of the partition 5 of the grooves 12 also helps to increase the reliability of the fixation of the partition 5 (figure 1) and supporting elements 11 during the entire cycle of metal casting. This saves the system of rational distribution of steel flows during its casting and helps to reduce non-metallic inclusions in the cast metal.

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 metal passage, on the surface of which the central height is made from the casting chamber to the full height of the partition a protrusion, and on the upper end surface of the partition in its middle part an end protrusion is made, while the bucket is equipped with the casting chamber with support elements with holes for the passage of metal, characterized in that vertical grooves are made in the side surface of the partition, from the side of the casting chamber, with protrusions in the lower part of the partition, while supporting elements are installed in the cavities of the vertical grooves, containing in its lower part cutouts mating with protrusions in the vertical grooves of the septum.