EP1955794A1 - Fixture units for distribution tanks - Google Patents

Abstract

A steel tundish (2) inlet zone (3) incorporates inward-inclined baffles rims (10) angled outer margins (33). The incoming flow of liquid steel (8) is gently decellerated and then discharged at a uniform rate in laminar flow.

Description

The invention relates to an installation body to prevent spattering and Verwirbelungserscheinungen in the sprue of a tundish distribution vessel, wherein on the tundish floor in the impact region of the Stahistrahles an impact body is arranged, which is cup-shaped, wherein the boundary walls as guide walls for the liquid steel obliquely or arcuately are formed and wherein the body bottom and top edge are splash-spaced and the top edge is dimensioned according to the opening cross-section accordingly.

Such an installation body is from the DE 26 43 009 A1 basically known. The installation body referred to here as an insert body is arranged in the impact area so that it is intended to prevent the spraying away of the liquid steel. For this purpose, arranged in the impact area baffle plate is provided with a kind of rust, which is made of refractory material and consists of honeycomb-like juxtaposed recesses, which are separated by continuous webs. These honeycomb-like recesses take up the falling jet of steel and at the very first moment will probably do something to ensure that liquid steel parts do not splash away. With the filling of the honeycomb or recesses, however, it is unavoidable that the impact of the liquid steel causes splashes that may even be more unpleasant than if they hit the flowing steel. In the recesses or honeycomb is the liquid steel and forms after a relatively short time a continuous surface, which just favors the spraying of steel parts. From the DE 20 2005 004 118 U1 is a so-called insert body known on the baffle plate are arranged perpendicular boundary walls and together should form a kind of tub. The upper opening is limited by the fact that an obliquely inwardly sloping edge is provided. In addition, this opening should be closed by means of a lid, which is supported on so-called positioning means which are fixed in the baffle plate. With the impact of the steel jet, the lid should be partially destroyed, so then upwardly splashing steel parts are retained by the rest of the lid. The arranged inside the container positioning means should simultaneously form a kind of guide element, which divide the incident pouring stream and / or redirect. The disadvantage here is that, of course, resulting from the collapse of the liquid steel splashes can be restrained insufficiently by the rest of the lid, which is probably why the over-wide upper edge is provided. This inwardly inclined edge is so unfavorably shaped that the overflowing steel can easily be struck by the inflowing liquid steel, which then leads to harmful splashes. Finally, it is disadvantageous that the jet of liquid steel plunges into the steel in the container, thereby tending to draw the liquid material (steel) around it into the container interior. Forcibly, it comes here to considerable turbulence also with respect to the steel parts, which go beyond the edge, which brings significant disadvantages. This also applies to an execution, as the U.S. Patent No. 5,518,153 can be removed. There, although the inner walls of the insert body bent executed to be streamlined, but this can not bring anything because of the far superior edge. This also applies to the training that the U.S. Patent 5,169,591 it can be seen, where there is omitted on one of the short sides of the lateral boundary wall, so that the liquid steel can easily flow out of this opening, without having to flow over the upper edge. At a distance from this opening, a wall with hole inserts is provided in order to equalize and soothe the steel bath or the outflowing steel flow in this way. The disadvantage, however, is that with this type of training a uniform flow in all directions can not be achieved and the backwater through the wall with the Finally, an additional disturbance is achieved, which is unfavorable.

The invention is therefore based on the object to provide an installation body for distribution vessels, in which the jet of liquid steel can be collected specifically spray-free and forwarded aerodynamically in any direction.

The object is achieved according to the invention in that the boundary wall has a serving as a drainage slope for the liquid steel outer bevel, which is formed obliquely extending to the tundish floor.

For the first time is achieved with the solution described that the incoming liquid material very quickly removed from the impact area and evenly distributed in the distribution vessel. The boundary wall ensures on the inside that the liquid steel is already deliberately guided in the distribution vessel or in the installation body so that the incoming steel jet is not hindered. This steel jet or the liquid material is then guided, especially on the outer wall or the outer slope, so that a linear flow without any vortex formation arises and is maintained until the material has reached the tundish floor and can then continue to flow in the direction of the vessel outlet , The liquid steel is thus directed so that it already laminar in the vessel largely laminar, but then in the transition region on the outer slope secured laminar and thus calm flow.

After an expedient training is provided that the boundary wall is formed both on the inside and on the outside of the upper edge to the body bottom extending obliquely outwards. As already mentioned, passes through this complete inclination of the boundary wall an advantageous targeted guidance of the liquid steel, which as such then completely calm over the drainage slope can leave the mounting body to then move smoothly and completely calm towards the spout. The upper edge, which is expedient for manufacturing reasons, forces the steel into a change in direction and that of the upstream path in a then outgoing path. In order to favor the diverting, the invention provides that the upper edge is aerodynamically designed, preferably rounded.

Since the upper edge is usually appropriate only for the manufacturing process of the mounting body, the invention further provides that the upper edge reduced in thickness or thickness and preferably reaching into the opening cross section of the entire bluff body and him the dimensions of 400 x 400 mm is formed resulting. While the bottom plate is dimensioned with about 600 mm, it comes so over the upper edge to a significant reduction in the opening cross-section, which is compensated again, however, when this "weak" edge melts away during operation or is taken away by the liquid steel. Although it remains due to the inclination of the boundary wall then still at a smaller opening cross-section, which in principle disadvantageous diversion of the steel stream but is significantly reduced.

The baffles according to the solution according to the invention have an inclination of up to 50 ° and the drainage slope an inclination of up to 130 °. Thus, the spatter formation is initially reduced, but at the same time allows an advantageous uniform outflow of the liquid steel.

It turns out that, for the first time, a completely uniform steel stream is created, which can then move evenly towards the outlet. The installation body remains advantageous on the tundish floor and is taken out with its remaining walls and the floor later with the bear from the distribution vessel.

According to an expedient development it is provided that the boundary wall has a height of 150-500 mm, preferably 200 mm. Such sized boundary walls or baffles, which are inclined inwards, result in a vessel on the oblique outer walls of the steel can flow evenly. The height is sufficient to safely redirect the steel material flowing into the vessel or the installation body and to remove it in a uniformly linear manner, as described above. Even if corresponding vortexes would occur during the introduction of the steel jet into this installation body, they can be made harmless by the uniform discharge outside on the boundary wall, because there a laminar flow is forced. In particular, the special design of the oblique and correspondingly high baffles makes advantageous noticeable.

Due to the advantageous angular design of the mounting body, there are disadvantageous corners in which the steel may possibly already cool. To avoid this in general, it may be expedient that the inner corners of the rectangularly formed impact body are partially filled by a round-shaped molded body. It is also conceivable, of course, to fill only the correct double corners, but advantageous are the all-round moldings to use. By this design, the production of the mounting body itself is facilitated, of course, such curves in the manufacturing process can be made with. It is advantageous that no niches and flow obstruction occur because the liquid steel is guided after hitting the body bottom along the boundary wall equal to the upper edge.

Further ahead, it has been pointed out that the entire installation body can gradually dissolve more or less completely during the filling of the liquid steel, whereby this dissolution can also be carried out selectively, namely by making the guide walls and the body floor made of refractory concrete a structural unit, wherein the refractory concrete consists of modified, refractory material, which is set favoring disintegration of the baffle body under heat in a given time. About a corresponding retarder is the dissolution of the concrete to a determined time or period, so for a long time for the anti-spattering effect and the prevention of eddies care is taken. It is also conceivable to use a permanently refractory material, which always has the great advantage of preventing washing out of the tundish floor or even the lateral wall, depending on where the liquid steel jet impinges.

In order to offer the possibility of being able to remove the entire structural unit or the installation body together with the bear from the distribution vessel later, it is provided that the structural unit rises on a leveling ground on the tundish floor and is fixed by means of an injection molding compound, which is streamlined to the outer slope is formed. The actual installation body thus remains bordered by the hardening residual steel on the tundish floor and can be removed together with the bear from the distribution vessel to be replaced by a new unit. It is advantageous that then you can still recognize the removed bear, whether the unit as such has fulfilled its task, namely whether it is still visible according to or has completely dissolved. The aerodynamically molded injection molding compound will dissolve accordingly, and together with the outer slope just for the favorable outflow of the liquid steel care.

If for manufacturing and other reasons, the use of vertical walls prove to be necessary, this is also possible if the baffles are formed vertically or approximately vertically standing and they outside, possibly also inside with molded, the laminar flow favoring moldings are equipped. About the moldings, the outer and the inner slopes of the baffles are still realized, so as to produce the desired laminar flow.

An advantageous anti-squirting effect is specifically supported by the fact that the body bottom has a certain surface, in particular with attached Cam or similar. In addition, there is the possibility that the body bottom has a coating consisting of a ceramic sponge material or that the body bottom is made entirely of ceramic sponge material or that the entire assembly consists of the ceramic sponge material. The correspondingly coated body floor then ensures that the impinging steel jet is passed on evenly on the body floor, without causing splashing. Although the ceramic sponge material will certainly be washed off after a certain time, but a sufficiently thick coating is sufficient to avoid the occurrence of splashes at the appropriate time. For this purpose, it is expedient that the ceramic sponge material is formed coarse-pored, so the incident liquid metal also "holds" accordingly

Another way of forming the body bottom is to have it having a surface occupied by a plurality of upstanding and spaced-apart round cams chosen to favor the uniform flow of the steel and to provide appropriately sized channels. The impinging jet of steel is thus caught and discharged through the channels, so that it can not lead to significant disturbances. Due to the well over 1400 ° C having liquid steel, the round cams decompose under certain circumstances after some time, but this is harmless, because the remaining remains sufficient to gently absorb and dissipate the impinging steel beam. In this case, a further advantageous effect is achieved, namely the Verwirbelungsverhinderung when flowing the steel beam. Rather, the entire liquid steel discharged evenly and in a largely laminar flow, which is then optimally optimized when draining over the outer slope. Instead of the round cams, polygonal cams can also be used, the round cams already having advantages from the point of view of production, and also further by the fact that they keep correspondingly well-sized channels between them. It is further provided that the channels between the round cam to the edge of the body floor itself are formed widening, so that thus the flow of the liquid steel is facilitated.

It is advantageous if the round cams have a curved or pointed head, a diameter of 20-35 mm, preferably 25 mm and a height of 2-100 mm, preferably 30 mm and are arranged at a distance of 30 mm from each other. As a result, a type of brush is provided, on which the steel beam impinges, in order then between these brush hairs, d. H. So evenly distribute the round cam without it can cause splashing. The round cams with the domed or tapered heads further advantageous not give the liquid steel the opportunity to rebound again. The round cams themselves are dimensioned so that, as mentioned earlier, they provide sufficient service life. With the appropriate dimension, it is ensured that the anti-squirting effect is maintained until completion of the initiation measures of the steel jet, even if the individual round cams and thus the entire installation body should already be below the level of the filled steel. The round cams mentioned here are given on the inside body floor at the appropriate height, which may be possible to dispense with the boundary walls under certain circumstances. This especially if they have a corresponding height. The liquid steel can then flow off evenly and quickly, because just the baffles are not there, which would force a Hochführen the steel.

The invention is characterized in particular by the fact that an installation body for distribution vessels and similar vessels is created in which not only an avoidance of the spraying effect or an avoidance of spray is achieved, but at the same time a uniform and Verwirbelungserscheinungen preventive flow of the liquid steel is possible , Any type of turbulence is suppressed, because the impinging or incoming liquid steel is discharged evenly, and in such a way that it itself again during high flow and then during the discharge on the inclined baffles can catch any spills. For additional suppression of spray the surface of the body bottom is specially designed. The baffles are shaped so that the steel is always guided evenly, so that it comes only to laminar flows, in particular by the obliquely outwardly extending outer slope. The steel flows evenly, ie laminar, fills the entire distribution vessel and can then be withdrawn evenly. Adverse mixing or the like can not occur. At the same time care is taken that do not occur over the body disadvantageous leaching in the distribution vessel. A further advantage is that this mounting body can be used in the distribution vessel at the optimum location and set to fully fulfill its function in two respects, so that both in terms of security (splash) as well as equalization of the entire process sequence an optimum is reached.

Figur 1

einen Einbaukörper in perspektivischer Ansicht,

Figur 2

einen Schnitt durch den Einbaukörper gem. Figur 1 in leicht abgewandelter Form,

Fig. 2a - 2c

verschiedene Ausgestaltungen des oberen Randes des Einbaukörpers,

Figur 3

eine in ein Verteilergefäß eingesetzte Baueinheit im Schnitt mit einströmenden Stahlstrahl,

Figur 4

eine Teilansicht des Randes einer entsprechenden Baueinheit mit senkrecht stehender Leitwand und Formkörper,

Figur 5

einen Schnitt durch einen Einbaukörper mit besonders geformter Oberfläche des Körperbodens,

Figur 6

eine mit Rundnocken besetzte Prallplatte im Schnitt,

Figur 7

mehrere Rundnockenausbildungen in Seitenansicht,

Figur 8

das Innere eines Verteilungsgefäßes mit eingesetztem Einbaukörper in Form der Prallplatte nach Figur 6,

Figur 9

eine Prallplatte mit Rundnocken und stark geneigter Oberfläche,

Figur 10

ein Einbaukörper mit einer senkrechten Wand und

Figur 11

ein Einbaukörper mit einer nach außen geneigten Wand.

Further details and advantages of the subject invention will become apparent from the following description of the accompanying drawings in which a preferred embodiment with the necessary details and individual parts is shown. Show it:

FIG. 1

an installation body in perspective view,

FIG. 2

a section through the mounting body acc. FIG. 1 in slightly modified form,

Fig. 2a - 2c

various embodiments of the upper edge of the mounting body,

FIG. 3

an assembly used in a distribution vessel in section with incoming steel jet,

FIG. 4

a partial view of the edge of a corresponding unit with vertical guide wall and moldings,

FIG. 5

a section through an installation body with a specially shaped surface of the body floor,

FIG. 6

a round baffle-covered baffle plate on average,

FIG. 7

several round cam designs in side view,

FIG. 8

the inside of a distribution vessel with inserted body in the form of the baffle plate after FIG. 6 .

FIG. 9

a baffle plate with round cams and a very inclined surface,

FIG. 10

an installation body with a vertical wall and

FIG. 11

an installation body with an outwardly inclined wall.

FIG. 1 shows an installation body 1 in a perspective view. This mounting body 1 is as well FIG. 3 can be removed, arranged in a distribution vessel 2 with sprue 3. In this in FIG. 1 and 2 shown mounting body 1 is provided in addition to the body bottom 40 around a boundary wall 24. Both together form a structural unit 30, which can be arranged as such on the tundish floor 4. At the in FIG. 1 shown assembly 30 extend the boundary walls 24 in the form of baffles 25 obliquely to the center 11 out. These baffles 25 have a slope of 45 ° to 50 °, so that this results in an outer slope 33, the like FIG. 3 shows, has a particularly favorable effect to drain the running liquid steel 9 safely and quietly. With the angle 37 and 38, it is shown that the inner slope extends corresponding to the center, while the outer slope is designed to promote the uniform discharge of the liquid steel 9 very favoring.

The container opening 23 serving for filling or introducing the steel jet 8 is dimensioned so that at the same time in the edge region 22 the highly-guided liquid steel 9 can be removed via the slopes of the guide wall 25. Depending on the inclination of the baffles 25, the opening cross-section of the container opening 23 is at least 400 x 400 mm, which is sufficient to safely introduce a conventional steel beam 8. Should this arrive or impinge in the edge region 22, the effluent liquid steel 9 on the opposite side 21 can still be removed safely and almost laminar.

The same body or the same unit 30 is in FIG. 2 shown in section. Here it is clear that the drainage slope 33 leads down to the tundish floor 4. It will be appreciated that the inclined baffles 25 particularly favor the laminar outflow of the liquid steel 9. The Figures 2a, 2b and 2c show various embodiments of the upper edge 29 of the baffle 25, where once a vertical end wall 36, an inclined end wall 36 'and a rounded end wall 36 "is reproduced.

FIG. 3 shows a section through a distributor vessel 2, wherein the mounting body 1 is arranged on the tundish floor 4. Here it is shown that the liquid steel 9 in the form of the steel beam 8 first impinges on the body bottom 40, to then be guided to the edge 41 of the body bottom 40 and deflected there, namely at the inclined guide walls 25 up to the upper edge 29 high , Here you can see how the liquid steel 9 is guided inside the installation body 1 and how this movement or the flow of the liquid steel 9 is influenced in a targeted manner. In the direction of the body interior 27 obliquely extending guide walls 25 are provided at the upper edge 29 with a rounding 31, as well as in Figure 2c shown, so as to exclude even the slightest obstruction of the liquid steel 9. This is further supported by the fact that in the corners 26 moldings 28 are arranged, which ensure a uniform redirecting of the liquid steel 9 in the direction of the body 27 inside. These shaped bodies 28 may consist of different refractory material.

The mounting body 1 is arranged with its guide walls 25 and the body bottom 40 on a leveling pad 5 on the tundish floor 4. About the already mentioned injection molding compound 6, this assembly 30 is set so that it maintains its position until the end of the Einfüllmaßnahme the liquid steel 9. In order to ensure the outflow of the liquid steel 9 outside of the installation body 1 in a laminar flow, this injection molding compound 6 is applied a drainage slope 34 resulting, whereby the liquid steel 9 can be selectively derived via the outer slope 33 away. An advantageous laminar Flow is given as a whole, wherein the drainage slope 34 and the outer slope 33 pass appropriately into one another.

To further calm the impinging jet of liquid steel 8, the body bottom 40 may be provided with a coating 45. This coating 45 is expediently made of a ceramic sponge material, which is applied correspondingly thick and coarse-pored. Recognizable is after FIG. 3 above all, the molded body 28 used in the corner, which has already been mentioned earlier. 42 is the inside of the boundary wall and 43 denotes the outside.

FIG. 4 makes it clear that you can compensate for a vertical boundary wall 24 or baffle 25, the vertical arrangement in that one arranges 26 molded body 28 in a corner. Also, the upper edge 29 is provided here with a rounding 31. It is particularly clear that here also a drainage slope 34 is preformed, the quasi an outer slope as in the outer slope 33 of the guide wall 25 after FIG. 3 forms. In this way, the favorable laminar flow is generated here, wherein the drainage slope can be designed differently, yet to achieve the calming effect described.

FIG. 5 Finally, shows an embodiment in which the surface 13 of the impact body 10, ie that of the body bottom 40 is particularly formed. On this baffle 10 and its surface 13 is a plurality of round cams 15,16,17, which constitute a structural unit with the baffle body 10. In the region of the edge 12 bevels are present, so that the approximately incident in the middle 11, not shown here steel beam between these round cams 15, 16, 17 evenly distributed and can flow through the channels 18, 19, not shown here. The heads 20 of the round cams 15, 16, 17 are rounded, slightly or more beveled, which is based on the representation of FIG. 7 is explained and shown in more detail. It is also conceivable that the heads 20 of a continuous row of round cams 15 the impinging steel beam specifically designed in the channels 18, 19 in leitleitend, so all have a same slope. It is not shown that the surface 13 can also be roughened up to the edge 12 or only in the central region.

The FIGS. 6, 8 and 9 show a particular embodiment in which an impact body 10 is shown in the form of a baffle plate 44. On the surface 13 of this baffle plate 44 are the off FIG. 5 already known round cams 15, 16, 17 attached, between which channels 18, 19 are provided, through which the impinging steel jet can be dissipated.

FIG. 8 shows such an installation body 1, which is installed in a distribution vessel. In the sprue area 3 of this distribution vessel 2, a leveling 5 is applied to the tundish floor 4, on which the mounting body 1 is placed. It is therefore not placed directly on the surface 7 of the tundish floor 4, but rather as mentioned on the leveling pad 5, so that when later removing the remaining bear this mounting body 1 can be easily removed from the tundish floor 4, and that together with the erstarten steel of the bear. In addition, the mounting body 1 or its base plate by an injection molding compound 6, which can be introduced quickly and safely and which is designed so that the liquid steel 9 after the impact of the steel beam 8 on the baffle plate 44 evenly over the tundish floor 4 and thus can be distributed in the entire distribution vessel 2.

To ensure that the impinging liquid steel 9 is evenly and quickly distributed in the baffle plate 44 and thus between the round cams 15, 16, 17 and flows through the channels 18, 19, a corresponding dimensioning of the channels 18, 19 is necessary. In addition to the appropriate dimensioning of the channels 18, 19, it may also be expedient to allow the surface 13 of the baffle plate 44 to rise towards the center 11, which is in FIG. 9 is reproduced. In this illustration, after FIG. 9 If the slope is shown somewhat exaggerated, it is shown that the channels 18, 19 are strongly inclined, so that the liquid steel pending between them can quickly flow away towards the edge 12, from where it can then distribute itself uniformly and laminarly over the tundish bottom 4 of the distributor vessel 2.

Due to the special design of the mounting body 1, it is now possible to arrange the respective mounting body there exactly in the distribution vessel 2, where a uniform distribution throughout the distribution vessel 2 is most optimally possible. In the case of oblong distribution vessels 2, it is expedient also to use rectangular installation bodies 1; in the case of square or almost square distribution vessels, however, other shapes of the installation body can also be selected, for example also circular ones. It is important that the steel beam 8 impinging in the installation body or in the impact body 10, ie the liquid steel 9, is admitted and collected without splashes, in order then to be diverted specifically within the installation body 1 and forwarded to the higher-lying edge 29. Due to the special design of this upper edge 29 with its rounding 31 or other functional shapes of the end wall 36 is ensured that the liquid steel 9 is now quietly and evenly derived on the outer slope 33 in the direction Tundishboden 4. It can not come here to swirls and other influences; Rather, a laminar flow of the liquid steel 9, which now reaches the outlet in the distribution vessel 2, results. During this entire process, the entire installation body 1 remains on the tundish floor 4, so that any further emerging liquid jet drops can be safely avoided. Only after approximate filling of the distribution vessel 2, this "collecting function" of the mounting body 1 is no longer needed, so that in particular the boundary wall 24 "melt away" can. It dissolves and is carried along by the liquid steel 9, whereby ultimately the coating 45 and also the leveling pad 5 can be washed away, depending on the expediency, without the risk that the bottom of the distribution vessel 2 is also influenced and washed out. Long service life of the distribution vessel 2 are guaranteed.

After then the bear has been removed after curing of the liquid steel 9, the entire tundish floor 4 is again available to install a new mounting body 1. The description makes it clear that the overall operation is as good as not charged by using such mounting body 1. The advantage of this installation body 1 is eminent, however, because the liquid steel 9 can impinge safely on the tundish floor 4, once without affecting it and on the other endanger the operating crew. Rather, the entire liquid steel 9 is collected in the mounting body 1, to be forwarded so cleverly that it can come without any disturbances to the flow of the liquid steel 9.

The FIGS. 10 and 11 show particular embodiments in which in example rectangular mounting body 1 on three sides boundary walls 24 are arranged with an outer slope 33, while the support wall 50 is attached vertically. In the two versions after FIGS. 10 and 11 the support wall 50 is pulled over the level of the edge 29, so that this raised edge 51 can ensure that on this side of the liquid steel does not overflow, but only on the other three sides. To FIG. 11 In addition, a collar end 52 is provided in order to get the syringe effect even better in this way in the handle.

If the installation body is to be leaned against or connected to a tundish wall, the drainage slope must be omitted on this side. It is then only available on the free pages.

All mentioned features, including the drawings to be taken alone, are considered to be essential to the invention alone and in combination.

Claims (15)

An installation body for preventing spray and Verwirbelungserscheinungen in the sprue area (3) of a tundish distribution vessel (2), wherein on the tundish floor (4) in the impact region of the steel beam (8) an impact body (10) is arranged, which is pot-shaped, wherein the boundary walls (24) are obliquely or arcuately shaped as guide walls (25) for the liquid steel (9) and wherein body bottom (40) and top edge (29) are spaced apart to avoid splash, and the top edge (29) is dimensioned according to opening cross section,
characterized,
that the limiting wall (24) as a discharge slope (34.), serving for the liquid steel (9) outer slope (33) obliquely to the Tundishboden (4) is designed to run. Mounting body according to claim 1,
characterized,
in that the boundary wall (24) on both the inside and the outside (42, 43) is designed to run obliquely outwards from the upper edge (29) to the body bottom (40). Mounting body according to one of the preceding claims,
characterized,
that the upper edge (29) is designed aerodynamically favorable, preferably rounded. Mounting body according to one of the preceding claims,
characterized,
in that the upper edge (29) is reduced in thickness and preferably extends into the opening cross-section of the entire impact body (10) and gives it the dimensions of 400 x 400 mm. Mounting body according to one of the preceding claims,
characterized,
that the baffles (25) an inclination (37) of up to 50 ° and the drainage slope (34) an inclination (38) are formed up to 130 ° comprising. Mounting body according to one of the preceding claims,
characterized,
that the limiting wall (24) has a height of 150 - having 500 mm, preferably 200 mm. Mounting body according to one of the preceding claims,
characterized,
in that the inner corners (26) of the rectangularly formed impact body (10) are partially filled by a round-shaped shaped body (28). Mounting body according to one of the preceding claims,
characterized,
that the guide walls (25) and the body floor (40) made of refractory concrete form a structural unit (30), wherein the refractory concrete consists of modified, refractory material, which is set favoring disintegration of the impact body (10) under heat in a given time. Mounting body according to one of the preceding claims,
characterized,
in that the structural unit (30) rests on a compensating fill (5) on the tundish floor (4) and is fixed by means of an injection-molding compound (6) which is formed in a streamlined manner on the outer slope (33). Mounting body according to one of the preceding claims,
characterized,
in that the guide walls (25) are designed to be vertical or approximately vertical and that they are equipped on the outside, possibly also on the inside, with molded bodies (28) which promote the laminar flow. Mounting body according to one of the preceding claims,
characterized,
in that the body bottom (40) has a coating (45) consisting of a ceramic sponge material, or that the body bottom (40) is made entirely of ceramic sponge material or that the entire structural unit (30) consists of ceramic sponge material. Mounting body according to one of the preceding claims,
characterized,
that the ceramic sponge material is coarse-pored. Mounting body according to one of the preceding claims,
characterized,
that the body bottom (40) has a surface (13) occupied by a plurality of upright and spaced-apart circular cams (15, 16, 17) which are chosen to favor the uniform flow of the steel (9) and correspondingly sized channels (18, 19) pretends. Mounting body according to one of the preceding claims,
characterized,
in that the round cams (15, 16, 17) have a curved or tapered head (20), a diameter of 20-35 mm, preferably 25 mm and a height of 2-100 mm, preferably 30 mm, and at a distance of 30 mm from each other. Mounting body according to one of the preceding claims,
characterized,
that the channels (18, 19) between the round cams (15, 16, 17) to the edge (12) of the body bottom (40) are widening.

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