RU37332U1 - INTERMEDIATE BUCKET FOR CONTINUOUS METAL CASTING - Google Patents

Abstract

1. An intermediate ladle for continuous casting of metals, including two casting nozzles in the bottom, movable partitions equipped with drives for moving them and dividing the working cavity of the intermediate ladle into three zones communicating with each other, one receiving and two casting, characterized in that each of the partitions made in the form of pairwise mounted rotary walls: a cut-off installed on the side of the pouring zone and a control installed on the side of the receiving zone, while the walls are pivotally mounted on an individual ideal supporting axes whose centers are offset relative to each other towards the receiving zone, and a wall orientator is installed on the bottom, part of which is made in casting zones with cylindrical surfaces with radii equal to the height of the cutting wall drawn around the supporting axes of the cutting walls. 2. Ladle according to claim 1, characterized in that the part of the orientator located in the receiving zone, from the side of the casting zones, is made with protrusions at a height equal to 0.25-0.3 of the working level of the metal in the intermediate ladle. The bucket according to claim 1, characterized in that the drives for moving the cutting and regulating walls are made individually. The bucket according to claim 1, characterized in that overflow holes are made in the cut-off wall.

Description

Object - Utility Model

Continuous casting tundish

The utility model relates to ferrous metallurgy and can be used for continuous casting of metals using a sequential scheme of steel ladle feeding by melting for melting.

Known intermediate ladle for continuous casting of metal, including the receiving and casting chambers, separated by partitions, made in them by three rows of tapering overflow channels, of which the channels of the upper row are directed by the narrowing towards the receiving chamber, and the channels of the middle and lower rows are directed by the narrowing towards the casting chambers, receiver-damper of the jet poured metal from the protective pipe, installed in the bottom of the bucket (see RF patent No. 2185261, 22 D 41/00).

A disadvantage of the known intermediate ladle is the unsatisfactory quality of continuously cast ingots in continuous casting and the smelting method. This is due to the fact that during the successive change of casting ladles with metal of various chemical composition, the metal mixes up; its pouring ladle and the subsequent one in the intermediate ladle. In that

2003135965

V. LUMINES.,

 fra iji9 «5

IPC B22 D 11/00

composition that does not correspond to the chemical composition of the metal of the previous melting and subsequent. As a result, the yield of continuously cast ingots by chemical composition decreases.

The closest analogue to the claimed object is a method of continuous casting of metals and a device for its implementation, which contains an intermediate ladle with two pouring glasses in the bottom, movable partitions equipped with drives for moving them, and dividing the working cavity of the intermediate ladle into three zones communicating with each other, one receiving and two casting (see RF patent No. 2109593, B22D 11/00, 11/10).

A disadvantage of the known device for continuous casting of metals is the insufficient quality of the metal in the conditions of continuous casting and when using a consistent scheme for feeding steel casting ladles by melting. This is explained by the fact that during the successive change of steel-pouring ladles with metal of various chemical composition, when moving the movable partitions towards the receiving chamber, the levels of metal and coating slag change: in the central receiving chamber, the level rises, and in the extreme casting chambers decreases, while through the side chambers Clearances Pure metal from the receiving chamber is discharged onto the integumentary filler located in the casting chambers. In this, the metal is mixed with a coating mantle located on the surface of the metal in the casting chamber, and then the subsequent distribution of slag in the metal. located in the casting chambers, which leads to the subsequent tightening of the slag into the casting hole of the intermediate ladle and further into the mold. As a result, the quality of the metal deteriorates. The technical problem solved by the utility model is to improve the quality of the metal during casting, while at the same time ensuring an increase in the yield of continuously cast ingots in chemical composition using a sequential scheme for feeding casting ladles by melting for melting. The stated technical problem is solved in that in the intermediate ladle for continuous casting of metals, including two casting nozzles in the bottom, movable partitions equipped with drives for moving them and dividing the working cavity of the intermediate ladle into three zones communicating with each other, one receiving and two casting, according to of the utility model, each of the partitions is made in the form of pairwise mounted rotary walls: a shut-off, installed on the side of the casting zone and a regulating, installed on the receiving side zones, while the walls are sharply mounted on individual supporting axes, the centers of which are drilled relative to the radius in the direction of the receiving zone, and the wall orientator is installed on the bottom, part of which is made in casting zones with flat surfaces with radii equal to the height of the cut-off wall, carried out in the center of the supporting axes cut-off walls. At the same time, the part of the orientator located in the receiving zone, from (,, the sides of the casting zones, is made with protrusions at a height equal to 0.25 - 0.3 of the working level of the metal in the intermediate ladle, in addition, the drives for moving the shut-off and control walls are made individually, and Overflow holes are made in the shut-off wall. The utility model is illustrated by drawings, where: Fig. 1 shows a part of a longitudinal section of an intermediate ladle for continuous casting of metals in the initial position; Fig. 2 - section AA in Fig. 1; Fig. 3 - section B-B n and Fig. 2; Figs. 4, 5, 6 show a part of a longitudinal section of an intermediate ladle for continuous casting of metals at various positions of the rotary walls. An intermediate ladle for continuous casting of metals (Fig. 1) includes a lined body 1, two casting nozzles 2, 3 fixed in the bottom, movable partitions 4, equipped with drives 5 (Fig. 2) for their movement, and dividing the working cavity of the intermediate bucket into three zones communicating with each other, one receiving zone) then zone 6 (Fig. 1) and two casting zones 7 and 8, each of the partitions 4, is made in the form of pairwise mounted rotary walls: a cutting wall 9 installed from the side of the casting zones 7 and 8 and a control wall 10 installed from the receiving zone 6, while cutting the walls 9 are pivotally mounted h on the supporting axes 11 (Fig. 3), and the regulating walls 10 (Fig. 1) are pivotally mounted on the supporting axes 12 (Fig. 2), the centers of the axes 11 and 12 are displaced relative to each other towards the receiving zone 6. An orientator 13 (Fig. 1) of walls 9 and 10 is installed on the bottom, part of orientator 13 approx. 9 and 10, made in casting zones 7 and 8 with cylindrical surfaces with radii equal to the height of the cut-off walls 9, drawn around the centers 14 and 15 of the support axes 11 of the cut-off walls 9. In the receiving zone 6, a part of the orientator 13 of the walls 9 and 10 is from the pouring zones 7 and 8 are made with protrusions 16 at a height equal to 0.25 - 0.3 of the height of the working level of the metal in the intermediate ladle. Drives 5 (Fig. 2) for moving the shut-off walls 9 and the regulating walls 10 are made individually in the form of cylinders 17,18, each of which is pivotally connected to the elements of the walls 9 and 10, the cylinders 17 are connected to the shut-off walls 9, and the cylinders 18 are connected to the regulating walls 10. In the shut-off walls 9 (Fig. 3) there are overflow holes 19. The supporting axes 20 and 21 of the cylinders 17, 18 are mounted on the side surfaces of the intermediate bucket. Works an intermediate ladle for continuous casting of metals as follows. In the process of non-gouging casting, the steel casting ladles are sequentially casted with metal of a chemical casting composition by melting without interruption of jets of metal in crystallizers. The metal is fed into the intermediate ladle on the orientator 13 (Fig. 1) of walls 9 and 10, From the intermediate ladle, the metal is directed through the casting cups 2, 3 to the molds from which continuously cast ingots are drawn. Before starting to feed the metal into the intermediate ladle (Fig, 1) from the next steel pouring bucket partitions 4 are in the initial position. At the same time, the metal level of the previous melting in the casting zones 7, 8 should remain at a level of not less than 0.1 -f 0.2 of the height of the working level of the metal in the intermediate ladle, Adjustable; these walls 10 are fixed in the stop by the protrusions 15 of the orientator 13, Thus, the receiving zone 6 closes, and again arrives: the second metal gradually fills its cavity, without mixing with the metal before it melts. As the receiving zone 6 is filled, they are cut off by means of cylinders 17; their walls 9 (Fig. 1), they rotate along the supporting axes 11 (Fig. 3) with an angular velocity corresponding to it; the metal flow rate through pouring glasses 2 and 3 (FIG. 1), the Control walls 10 at this time remain in their original position. As soon as the cut-off walls 9 (FIG. 4) reach a position above the pouring glasses 2 and 3, the control walls 10 begin to rotate. Through the gaps between the surfaces of the orientator 13 and the walls 10, the metal begins to flow into the casting zones 7 and 8,

Zones 7 and 8. Cutting off of metal of various melts occurs at the moment of passage of the cut-off walls 9 above the pouring glasses 2 and 3, the metal of the next melting starts to be put into the mold.

From the extreme position, the cut-off walls 9 (Fig. 6) are moved towards the receiving zone 6 and are installed between the pouring glasses 2 and 3 and the regulating walls 10. In this position, all further metal casting of a certain chemical composition occurs.

Before changing the steel pouring ladle with metal of a different chemical composition, partitions 4 (Fig. 1) return to their original position, and the cycle repeats.

Claims (4)

1. An intermediate ladle for continuous casting of metals, including two casting nozzles in the bottom, movable partitions equipped with drives for moving them and dividing the working cavity of the intermediate ladle into three zones communicating with each other, one receiving and two casting, characterized in that each of the partitions made in the form of pairwise mounted rotary walls: a cut-off installed on the side of the pouring zone and a control installed on the side of the receiving zone, while the walls are pivotally mounted on an individual ideal supporting axes, the centers of which are offset relative to each other towards the receiving zone, and a wall orientator is installed on the bottom, part of which is made in casting zones with cylindrical surfaces with radii equal to the height of the cutting wall drawn around the supporting axes of the cutting walls. 2. The bucket according to claim 1, characterized in that the part of the orientator located in the receiving zone, on the side of the casting zones, is made with protrusions at a height equal to 0.25-0.3 of the working level of the metal in the intermediate ladle. 3. The bucket according to claim 1, characterized in that the actuators move the shut-off and control walls are made individually. 4. The bucket according to claim 1, characterized in that overflow holes are made in the cut-off wall.