RU78712U1 - INTERMEDIATE BUCKET FOR CONTINUOUS METAL CASTING - Google Patents

Abstract

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 and a supporting element located at the bottom of the receiving chamber, characterized in that on the side surface of the transverse partition from the side of the receiving chamber is attached a protective refractory element, mating with the side surface of the receiving chamber The lower end surfaces of the transverse partition and the protective refractory element are mounted on the support element.

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 inlet from a steel pouring ladle, immersion glasses, and a transverse vertical partition between the metal inlet zone and immersion glasses with openings for the passage of metal, which is made 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 of the claimed object is

an intermediate ladle for continuous casting of metal, including a lined case, inside which there are casting glasses for supplying metal to a mold forming a receiving and casting chamber, a vertically mounted transverse partition with holes for the passage of metal and a support element located at the bottom of the receiving chamber (see patent RF No. 54320, B22D 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 movement of flooded jets of steel 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 the receiving and

a casting chamber, a vertically mounted transverse partition with holes for the passage of metal and a support element located on the bottom of the receiving chamber, according to the change, a protective refractory element is fixed on the side surface of the transverse partition, from the side of the receiving chamber, mating with the side surface of the receiving chamber, lower end the surface of the transverse partition and the protective refractory element are fixed to the support element.

The utility model is illustrated by drawings, where:

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

figure 2 is a view a of figure 1.

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 (Fig. 1) is divided into a receiving 3 and casting 4 chambers of a vertically mounted transverse partition 5 (Figs. 1, 2) with holes 6 for the passage of metal and a supporting element 7 located on the bottom 8 (Fig. 1) of the receiving chamber 3 On the side surface 9 of the transverse partition 5 (Fig.1, 2), from the side of the receiving chamber 3 (Fig.1), a protective refractory element 10 is fixed (Fig.1, 2),

mating with the side surface 11 (figure 1) of the receiving chamber 3. The lower end surface 12 (figure 2) of the transverse partition 5 and the lower end surface 13 of the protective refractory element 10 are mounted on the supporting element 7.

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

Pre-cooked joint kit 14 (figure 1) from:

the transverse partition 5, the protective refractory element 9 and the supporting element 7. Kit 14 is installed on the bottom 8 of the receiving chamber 3. After installing the kit 14, a layer of refractory lining - shotcrete 15 is applied to the inner surface of the bucket body 1.

The metal from the steel pouring ladle (not shown in FIG.) Enters the claimed intermediate 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 along the surface of the support element 7 and through the holes 6 of the partition 5 enters the casting chamber 4, and the second part of the metal flow, moving towards the partition 5, overflows through the upper end face of the transverse partition 5. Application of the proposed joint kit preparation systems 14, from the transverse partition 5,

a protective refractory element 9 and a supporting element 7, contributes to reliable fixation of the transverse partition relative to the protective refractory element 9 and the supporting element 7. This ensures the creation and preservation of a uniform distribution of flooded jets of steel on casting glasses of the ladle during the entire cycle of operation of the intermediate ladle on a continuous casting machine blanks. As a result, the tightening of non-metallic inclusions and particles of slag into steel is significantly reduced during the entire casting cycle from this intermediate ladle.

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 and a supporting element located at the bottom of the receiving chamber, characterized in that on the side surface of the transverse partition from the side of the receiving chamber is attached a protective refractory element, mating with the side surface of the receiving chamber The lower end surfaces of the transverse partition and the protective refractory element are fixed to the support element.