RU44557U1 - 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 steel. An intermediate ladle for continuous casting of metal, including a lined body 1, a zone of metal inlet from a steel pouring ladle, pouring glasses 2 for supplying metal to the mold, between the zone of metal inlet and pouring glasses, a transverse vertical partition 3 is formed, forming a receiving 4 and pouring 5 chambers, openings 6 are made in the partitions for the passage of metal, while the partition is made in the form of a cycloid formed by a series of arches 7 and 8, the vertices of which are turned towards the receiving chamber, and on ial points - towards the pouring chamber, the longitudinal axis 9 of the holes are inclined relative to the longitudinal axis 10 of the receiving chamber, with each of the axes 9 directed into the space between adjacent casting glasses, and a protrusion 12 in its middle part 13 is made on the upper end 11 of the partition .

Description

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

An intermediate ladle for continuous casting of metal is known, including a lined body, a zone of metal entry from a steel pouring ladle and casting glasses, stoppers installed above each casting glass, partitions are located between the metal entering zone and casting glasses, forming a receiving and pouring chambers, with the chambers made therein three rows of tapering overflow channels, from which the channels of the upper row are directed by narrowing towards the receiving chamber, and the channels of the middle and lower rows are directed narrowing towards the casting chambers (see RF patent No. 2185261, B 22 D 41/00).

The disadvantage of this tundish is the low quality of the cast metal. In the intermediate ladle under consideration, metal flows moving along the ladle flow around the stopper, behind the streamlined stopper both flows form a space filled with vortices. The presence of additional vortex funnels in the casting chamber behind the stopper leads to the tightening of the cover slag and non-metallic inclusions in

channel of the pouring cup, which reduces the quality of the cast steel.

The closest analogue to the claimed object is an intermediate ladle for continuous casting of metal, including a lined body, a zone of metal inlet from a steel ladle, pouring glasses for supplying metal to the mold, between the zone of metal inlet and pouring glasses, a transverse vertical partition is formed, forming a receiving and casting chamber , in the partitions holes are made for the passage of metal, while the partition is made in the form of a cycloid formed by a series of arches, the vertices of which facing the receiving chamber, and the starting points toward the casting chamber (see RF patent No. 33340 U1, B 22 D 11/10).

The disadvantage of this tundish is the low quality of the cast metal. When a receiving chamber is used in the intermediate ladle, the metal from which is fed into the casting chamber along an axis perpendicular to the axis passing through the axis of the casting nozzles, the metal flows are randomly distributed over the volume of the intermediate ladle, aiming for the nearest casting nozzles. In this case, structures of unstable vortices arise, which leads to a random movement of the metal in the casting chambers, as a result of which the slag is drawn into the metal, reducing its quality during casting.

The technical problem solved by the utility model is

improving the quality of the metal supplied to the casting by reducing the ingress of slag and non-metallic inclusions in the metal.

The problem is solved in that in the intermediate ladle for continuous casting of metal, including a lined body, a zone of metal inlet from a steel pouring ladle, pouring glasses for supplying metal to the mold, between the zone of metal inlet and pouring glasses, a transverse vertical partition is formed, forming a receiving and casting chambers, openings for passage of metal are made in the partitions, while the partition is made in the form of a cycloid formed by a series of arches, the vertices of which are facing the receiving chamber side, and the starting points toward the casting chamber, according to the utility model, the longitudinal axis of the holes are inclined relative to the longitudinal axis of the receiving chamber, with each of the axes directed into the space between adjacent pouring glasses, and a protrusion is made at its upper end wall middle part.

The utility model is illustrated by drawings, where:

figure 1 shows a top view of the intermediate bucket;

figure 2 shows a view of figure 1, a view of the partition wall of the intermediate ladle from the casting chamber.

As an option, an intermediate ladle for continuous casting of metal is presented, including a lined body 1 (Fig. 1), a zone

the metal flows from the steel pouring ladle, pouring glasses 2 (FIGS. 1, 2) for supplying metal to the mold, between the zone of metal entering and pouring glasses 2, a transverse vertical partition 3 is made, forming a receiving chamber 4 and a casting chamber 5, in the partition 3 made holes 6 for the passage of metal, while the partition is made in the form of a cycloid formed by a series of arches 7 and 8, the vertices of which are facing the receiving chamber 4, and the starting points are towards the casting chamber 5. At the same time, the longitudinal axes 9 (Fig. 1 ) holes 6, are inclined relative to the longitudinal axis 10 of the receiving chamber 4, while each of the axes 9 is directed into the space between adjacent pouring glasses 2, and on the upper end 11 of the partition 3 there is a protrusion 12 in its middle part 13.

An intermediate ladle for continuous casting of metal works as follows. Metal from the steel pouring ladle enters the intermediate ladle, during movement along which metal moves from the receiving chamber 4 to the casting chamber 5, passing through the openings 6 of the partition 3. Through the casting glasses 2, the metal enters the mold. When metal enters the receiving chamber 4, part of the flow moves to the bottom of the chamber and then toward the holes 6 of the partition 3, the second part of the duct moves towards the protrusion 12. The movement of the metal relative to the protrusion 12 contributes to the uniform distribution of metal in the volumes of the receiving chamber 4 and the casting chamber 5. In the filling chamber 5

two types of hydrodynamic processes occur. The first is the movement of steel from the receiving chamber 4 through the openings 6 of the partition 3. The second is the outflow of steel from the casting cups 2, accompanied simultaneously by the rotational movement of the metal in the casting chamber 5. The movement of metal flows from the openings 6 into the space between adjacent casting cups 2 creates conditions for reducing the formation of vortices, which reduces the height of the funnels above the pouring glasses 2 and reduces the possibility of drawing non-metallic inclusions and coating slag into the metal. All this creates the conditions for the optimal movement of the metal in the mold and also provides high quality metal during casting.

Claims (1)

An intermediate ladle for continuous casting of metal, including a lined body, a zone of metal inlet from a steel pouring ladle, pouring glasses for supplying metal to the mold, between the zone of metal inlet and pouring glasses, a transverse vertical partition is formed that forms a receiving and pouring chamber, holes are made in the partitions for the passage of metal, while the partition is made in the form of a cycloid formed by a series of arches, the vertices of which are facing the receiving chamber, and the initial ones ki - towards the casting chamber, characterized in that the longitudinal axes of the holes are inclined relative to the longitudinal axis of the receiving chamber, each of the axes is directed into the space between the adjacent nozzles, and the top end of the partition a projection in its middle part.