ES2331206T3 - COQUILLA DE COLADA IN ROPE. - Google Patents

Abstract

The chillmold has a guide (5) taking the lower region (21) of the chillmold tube (2) to at least two guide points (5 fi, 5 fa) on a first imaginary straight connecting line (V1) passing through the origin (U) of the first curvature radius (R) and the guided lower region of the chillmold. The chillmold is guided parallel to a first tangent (T1) to the casting axis (G) at the intersection point (S1) of the casing axis and the first connecting line.

Description

Colada casting rope.

The present invention relates to a shell of rope casting according to the preamble of claim 1.

Rope casting devices in the form of rope laundry shells have long been known in the state of the art EP 0 984 836 B1 describes a rope casting shell with integrated oscillating device, in which the shell tube has a curved casting axis and the coquilla tube is activated essentially in the direction of casting to perform an oscillating movement. The coquilla tube it is cooled by the circulating cooling water around the shell tube, such that it is necessary have a sealed shell housing circumferentially coquilla tube The unit formed by shell and tube housing of coquilla with the cooling water is activated until it oscillates and this is guided in a horizontal direction, that is primarily perpendicular to the direction of laundry, by a guide ring. The teaching of document EP 0 984 836 B1 is, among other things, let only the part oscillate essential of the rope casting device, so that the dough to activate until oscillating, keep as small as possible.

In this contact, among others, the known rope casting device of US document 4,483,385, which also has a tube with a shaft curved casting in which cooling is available by spraying, which makes it possible to swing only the tube of coquilla and its suspension. In the case of this provision the end upper of the coquilla tube, as seen in the direction of laundry, is attached to an adjustment element to activate the swing, while the lower end of the coquilla tube, as you look in the laundry direction, you can move freely.

Document DE 195 37 745 A1 makes clear a colada of colada in rope to strain a bar, that presents side walls that embrace the cavity of the shell of circulation. The rope casting shell has at least two mutually opposite side walls, which are rigidly fixed each other around a spill segment of the cavity of coquilla and present a decreasing taper in the direction of bar circulation. The side walls present, in a exit segment of the coquilla cavity arranged after spill segment in the direction of bar movement, side wall segments that can move toward the bar and they can be pressed against the bar by means of tightening mechanisms. The side wall segments are arranged with a taper less than the minimum taper of the side walls of the segment of pouring of the coquilla cavity.

From EP 1 337 361 B1 and from document DE-AS-1 508 808 is known in each case a rope casting shell according to the preamble of the claim 1, wherein a shell tube is provided with casting shaft and spray cooling. Compared with the known provision of US 4,483,385 the end bottom of the coquilla tube, as it looks in the direction of casting, using a vertical direction guidance device and is guided safely, in a horizontal direction, around the axis of laundry against a turn.

The mission of the present invention consists in Indicate a rope laundry shell with a tube with curved casting axis, which has an oscillating behavior improved and improved lifespan.

This mission is solved by a shell of rope casting according to claim 1.

The subordinate claims indicate improvements of the invention.

In the case of the rope casting shell guide the lower end of the coquilla tube, as seen in the casting direction, parallel to a tangent on the axis of casting in this lower region of the coquilla tube.

This minimizes the forces that they must be applied to the guide during the oscillating movement of the tube of coquilla, which on the one hand minimizes the wear of the guide and on the other hand it improves the oscillating behavior of the tube coke in relation to rope laundry.

According to a form of execution later improved not only the lower end is guided in this way, as look in the pouring direction but also the end of the tube upper shell, as viewed in the laundry direction, is that is, in parallel to a tangent on the casting axis in the respective guided region.

Particularities and conveniences are deduced Additional descriptions of execution examples based on the figures. Of the figures show:

fig. 1 a representation of principle of a colada of colada in rope according to a first form of execution of the invention, in a sectional view with a cutting plane, which is covered by the casting direction and the radius of curvature of the rope laundry shell;

fig. 2 a detailed sectional view of the first form of execution in an observation direction, which is opposite the observation direction of fig. one;

fig. 3 a sectional view of the device rope casting of the first form of execution, where the cutting plane is perpendicular to the cutting plane of figs. 1 and 2;

fig. 4 a detailed view of the region circled in fig. 2 by the circle DA1;

fig. 5 a detailed view of the region circled in fig. 3 by the circle DA2;

fig. 6 a sectional view along the P-P line of fig. 2; Y

fig. 7 a view of a second form of execution of the invention, which corresponds to the view of the fig. one.

First a first form is described in detail of execution of the invention. As shown in fig. 1 the rope casting shell presents, according to a first form of Execution of the invention, a curved casting shaft. At the moment request the casting axis is assumed as the outer radius of the tube of shell with the radius of curvature R. Alternatively it is also possible to assume the curved casting axis as the center line of the coquilla tube, as shown by the symbol of reference 11 in fig. 1 of EP 1 337 361 B1 shown in the introduction of the description. Because the radios of usual curvature of curved rope coiling tubes they are located in a margin of between 4,000 and 12,000 mm, while that the diameter of the coquilla tube is located in a margin of a few hundred mm, this difference does not play a role essential and all possible radii of curvature in the margin from the origin U of the radius of curvature to the inner side 24 turned towards the origin U, as a lower limit, to the outer side 25 of the coquilla tube 2 far from the origin U, as upper limit, should be considered in the following application as radios of R curvature of the coquilla tube 2 or of the casting axis.

The rope casting shell has a shell case 1, a shell tube 2 curved with a radius of curvature R according to the definition above), a device of cooling shown in the detailed views of figs. 2 to 6, an adjustment element 4 to activate the tube 2 to perform an oscillating movement fundamentally along the casting shaft, and a guide 5.

The coquilla tube 2 is arranged inside the shell housing 1. The cooling device 3 does not shown in fig. 1 but shown in figs. 2 to 6 is configured as a spray cooling device with injection nozzles 31, which cools the coquilla tube 2 during the casting process inside the shell housing by spray cooling.

The upper end 22 of the shell tube 2, as seen in the casting direction, it is equipped with a flange 23 or is fixed to it. The flange 23 is mounted through a rotating bearing around an axis of rotation A, so that can swing on a lever arm 43 of the adjustment element 4. The lever arm 43 is configured to swing around of a pivot point D. The lever arm 43 deflects in a oscillating movement by means of a drive element 41 of the adjustment element 4 as a pneumatic or hydraulic cylinder, etc. This can be done eg, as shown in fig. 1, through of the piston rod 42 of a lifting piston. The setting item setting 4, both in terms of item of drive 41 as well as the arrangement of transmission by levers, etc., is not limited to the form of Execution shown in the figures.

In the case of a preferred embodiment flange 23 is diverted at a frequency in a range of 1 to 10 Hz, preferably between 2 and 5 Hz with a run in a margin between 4 and 20 mm, preferably between 6 and 12 mm.

The length of the coquilla tube is located normally in a range between 300 and 1,200 mm, preferably  in a range between 600 and 1,000 mm.

In the case of many laundry shells in rope with curved shell tube, the tangent parallel to the gravity over the curvature of the coquilla tube is not located exactly over the upper end of the coquilla tube but above the center but clearly below the end upper of the coquilla tube, as shown in fig. 1st in EP 1 337 361 B1. Alternatively also in the case of this form of execution, however, is tangent parallel to the gravity can also be located on the upper end or near the upper end of the coke tube (see eg the US 4,483,385).

In the case of the first form of execution shown in fig. 1 the lower region 21 of the shell tube 2, as you look in the laundry direction, it is guided by a guide 5 during the oscillating movement of the coquilla tube 2. As It can be well recognized in fig. 1, a straight V1 junction line imaginary, which runs through the origin U of the radius of curvature R and of the lower region 21 guided and joins them, cut the outer side 25 of the shell tube away from the origin U (i.e. the casting axis) at a cut point S1. With it is evident that the tangent T1 is exactly perpendicular to the line of connection V1, on the curvature of the shell tube at the point of S1 cut. Apart from this the connecting line V1 is located in a plane, which is perpendicular to the tangent T1 and contains the point of S1 cut.

The guide 5 is formed by an outer part 52, which is fixed to the shell of shell 1, and a part inside 51 which is fixed to the coquilla tube 2. The outer part 52 has a groove, in which a piece of guided 53 in the form of a circular ring. Alternatively to this, the groove and guide piece 53 may also be provided on the inner part 51.

The guide piece 53 is according to a form of preferred execution a guide ring, which is configured with a heat resistant material that can withstand loads, such as eg a FHO guide ring from Concept GmbH, 86399 Bobingen, Germany The FHO material is a mixture of a fabric of synthetic fibers and a polyester resin.

The guiding ring is shaped like a ring circular, where the circular plane forms a guiding plane, which It is perpendicular to the tangent T1 and contains the cut-off point S1. In other words, the circular plane of the guide ring is located obliquely with an angle? relative to a plane horizontal perpendicular to gravity.

In figures 2 and 3 and in the detailed views DA1 and DA2, shown in Figures 4 and 5, can be recognized either the guide piece 53 is fixed in a groove on the side inside of the outside 52. Because the guide piece 53 is configured in the form of a circular ring, the surface that cooperate with this guide piece, in this case with the surface opposite exterior of the inner part 51, has a shape of corresponding circular cylinder, at least in the region where the outer surface comes into contact with the guide piece 53. Similarly, the outer part 52 has on its inner side a circular cylinder shape complementary to the shape of circular cylinder of the inner part 51, so that the pieces can move in relation to each other. Cylinder shapes circular also naturally present the angle? with with respect to the horizontal plane.

Through this ring-shaped configuration circular of the guide piece 53 and its corresponding orientation it is guaranteed that at least one 5fi guidance point is available in the inner side 24 of the shell tube, turned towards the origin U, and at least one guiding point 5fa on the outer side 25 of the tube shell 2, away from the origin U, on the connection line V1.

Through the cylinder-shaped configuration circular of the guide piece 53 are located the points of guided 5fi, 5fa on guided surfaces 511, 531, of which the surface 511 is located on the outer side of the part interior 51 and the guiding surface 531 on the inner side of the guiding piece 53, and which embrace the shell tube 2. The guiding surfaces 511, 531 are shaped like a circular ring or in This embodiment of circular cylinder. It would also be possible a convex or toroidal pumped shape to the surface corresponding of the guide piece 53 and / or the outer surface of the inner part 51 or the inner surface of the part exterior 52, such that the guide surface is then corresponding be a circular line, that is, have the form of circular ring Guiding surfaces 511, 531, or more exactly the circular plane in the circular cylinder, in which the connecting line V is located, they cover a guide plane F. The guiding plane F is perpendicular to the casting axis G at the point of cutting S of the guiding axis G and the connecting line V.

Through this, the coquilla tube is guided during the oscillating movement parallel to the tangent T1.

Through the ring-shaped configuration guide element circular 53 (and configuration complementary in the form of a circular ring of the opposite surface of the inner part 51), the coquilla tube is also free to rotate around the casting axis.

In an alternative embodiment, the piece of guide 53 can be an angled ring. Then the part inside 51 and outside 52 have to present on their side inside or outside side correspondingly cylindrical shapes angled In the case of an angular configuration of the piece of The degree of freedom is obviously no longer available around the casting axis.

In the case of the representation of principle shown in fig. 1, the adjustment element 4, and especially its drive element 41, is disposed on the outer side of the shell housing 1 away from the origin U. In the case of a preferred embodiment of the adjustment element 4, and especially its drive element 41, however, is arranged advantageously on the inner side of the housing shell 1 turned towards the origin U, as can be seen in fig. 2. There it shows the pivot point D, and the lever 43 can be seen on the side right of fig. 2. The drive element 41, which has not been depicted in fig. 2, point K is applied and deflects it oscillatingly, as indicated by the KB arrow. Through the arrangement of the adjustment element 4 on the side of the housing of shell turned towards the origin U, it is better protected against liquid metal splashing.

In fig. 3 you can recognize the pivoting the flange 23, so that it can rotate around of the A axis.

Fig. 7 shows a way of executing the invention.

In fig. 7 not only is the region guided bottom 21 of the shell tube 2, as seen in the direction casting, but also the upper region 22 of the coquilla tube 2, as seen in the laundry direction, by a guide 5 set accordingly. That is, in the case of the second form of execution is also guided the upper region, to through which the oscillating motion is applied to the tube of coquilla, along the tangent T2 on the curvature of the tube of shell in this upper region 22.

By means of this, the minor angular errors, which are caused by a movement of the upper region 22, which does not occur along the radius of curvature.

In the case of the second form of execution the upper region 22, as viewed in the laundry direction, is fixed to a flange 26 serving at the same time as an inner part 51 of guide 5. This flange 26 (51) is activated to perform a oscillating movement by means of a lever arrangement 42, 43 of the setting element 4 and drive element 41.

The junction line from the origin U of the radius of curvature R through the upper region 22 of the shell tube 2, as seen in the laundry direction, is designated with V2. The cut-off point of the connecting line V2 with the curvature is designated with S2 and the tangent over the curvature at the point of cut S2 with T2.

Otherwise the second form of execution is corresponds to the first form of execution, and the executions on guide 5 of the first form of execution are applicable of analogous form for the two guides 5 of the second form of execution.

In the case of the first and second forms In execution, spray cooling has been represented.  The shell of the shell is sealed with it preferably in its lower side, so that no water can escape. The refrigeration could also be executed, however, as circulation cooling Then the shutter must be adapted for circulation cooling, in the case of Execution shown.

The action of the described invention is considerable in terms of increasing the useful life of the guides. In in the case of a radius of curvature R of 10,000 mm, about angles? (see fig. 1), according to the position of the tangent parallel to gravity over the radius of curvature, of between 2nd and 5th. In the case of a radius of curvature R of 5,000 mm the angle α can be well above 5 °. That's why it is significant reduction of the support forces achieved by the invention.

The addition of an additional degree of freedom for oscillating the shell tube around the casting axis leads to a further significant reduction of the wear of the bearings and coke tubes.

It is explicitly stressed that all particularities made patent in the description and in the claims should be considered separately and independently of each other for the purposes of the manifesto original, as in order to limit the invention claimed independently of combinations of particularities in the forms of execution and / or in the claims. It is explicitly maintained that all values of margins or data of groups of units make clear any possible intermediate value or subgroup of units for the purpose of the original manifesto, as well as for the purpose of limiting the claimed invention, especially also as a limit of a margin data.

Claims (11)

1. Rope casting shed, with a coking tube (2) with a casting shaft (G) with a first radius of curvature (R), an adjustment element (4) that is adapted for the oscillating movement of the tube of coquilla (2), and a guide (5) that is adapted to guide the coquilla tube during the oscillating movement in the inferior region (21) of the coquilla tube (2), as it looks in the direction of casting, in parallel to a tangent on the casting axis, characterized in that the guide (5) is adapted to guide the lower region (21) of the coking tube (2), as viewed in the casting direction, at least at two points of guided (5fi, 5fa) on a first imaginary straight junction line (V1), which goes through the origin (U) of the first radius of curvature (R) and the guided lower region (21) of the coke tube (2 ), of which two guiding points (5fi, 5fa) in each case one of the guiding points is located, in relation to the origin (U) of the first radius of curvature (R), on the inner side (24) turned towards the origin (U) and on the outer side (25) of the coke tube (2), away from the origin, such that the coke tube (2) it is guided in parallel to a first tangent (T1) on the casting axis (G) at the cutting point (S1) of the casting axis (G) and the connecting line (U). 2. Rope casting according to the claim 1, wherein the guide (5) is configured such so that the coquilla tube (2) presents a degree of freedom for a turn around the casting axis (G). 3. Rope casting according to the claim 1 or 2, wherein the guiding points (5fi, 5fa) of the guide (5) are located on guide surfaces (511, 531) which embrace the coquilla tube (2), which are shaped like a cylinder circular. 4. Rope casting shell according to one of the claims 1 to 3, wherein over the upper region (22) of the coquilla tube (2), as seen in the laundry direction, is arranged a flange (23; 26) that is attached to the adjustment element (4). 5. Colada of colada in rope according to one of the claims 1 to 4, wherein another guide (5) is provided that It is adapted to guide the upper region (22) of the tube shell (2), as seen in the laundry direction, at least in two guiding points (5fi, 5fa) on a second connecting line (V2) imaginary line, which goes through the origin (U) of the first radius of curvature (R) and the upper region (22) guided by the tube of coquilla (2), of whose two guiding points (5fi, 5fa) in each case one of the guiding points is located, in relation to the origin (U) of the first radius of curvature (R), on the inner side (24) turned towards the origin (U) and on the outer side (25) of the tube of coquilla (2), far from the origin, and to guide the tube of shell (2) perpendicular to the second junction line (V2) and in parallel to a second tangent (T2) on the casting axis (G) in the cut-off point (S2) of the casting axis (G) and the second line of union (V2). 6. Rope casting shell according to one of the claims 1 to 5, wherein the guide (5) has a part interior (51), which is applied to the guided region (21; 22) of the coquilla tube (2), an outer part (52) that is applied to the shell housing (1) and a guide piece (53), which is arranged on the inside or on the outside. 7. Rope casting shell according to one of the claims 1 to 6, wherein the guide (5) is adapted for guide the coquilla tube during the oscillating movement in the guided region (21; 22) of the coquilla tube (2), such that the coquilla tube (2) is free for a turn around the first or second corresponding tangent (T) at the cut-off point (S1; S2) of the casting axis (G) and of the first or second connecting line (V1; V2) corresponding. 8. Rope casting shell according to claim 6 or 7, wherein the guide piece (53) is shaped of circular ring. 9. Rope casting shell according to one of the claims 1 to 8, further presenting a shell housing (1), and in which the guide (s) (5) is (n) arranged (s) between the shell housing (1) and the tube shell (2). 10. Rope casting according to the claim 9, further presenting a device for cooling (3), which is arranged in the shell housing (1) and refrigerates the coquilla tube (2) in the coquilla housing, and in which the shell housing (1) is sealed. 11. Rope casting shell according to claim 9 or, wherein the adjustment element (4) is arranged on the side of the shell housing (1), turned towards the origin (U) of the first radius of curvature (R).