JPS644869B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to continuous casting equipment particularly useful for producing slab materials, in which a coolable open-ended mold and a continuous casting follow a predetermined straight or arcuate path. a casting guide device for forcing the casting to move and cooling the casting on the path, the guide device comprising a guide frame;
moving beams mounted within the frame and arranged in two layers and arranged on opposite sides of the above-mentioned path, combined with the moving beams and moving each of the beams into contact with the continuous casting; a drive device operable to move the beam a predetermined distance away from the mold while the beam is in contact with the casting, and return the beam to an initial position; , and in this equipment the periodic motion of one group of moving beams in each layer is out of phase with the periodic motion of the other group in the same layer by about 1/2 period, and the guiding device is In the case of an arcuate path, a casting straightening device is provided next to the moving beam and operable by a drive to straighten the casting.

A very important and highly expensive component of any continuous casting equipment for advancing the casting along an arcuate path is the guide device, which guides the continuous casting from the mold in a nearly vertical direction. After the casting comes out, it serves to deflect the direction of travel of the casting and also to cool it. A known guiding device for guiding a casting along a straight or arcuate path consists of two layers of rollers arranged on opposite sides of the path for the continuous casting. Each layer consists of a considerable number of roller groups, which are subjected to a very high degree of unfavorable mechanical and thermal stress and for this reason have a much shorter life than expected. have Since each roller supports the skin of the continuous casting over only a very small strip-shaped area, adjacent rollers of each layer must be spaced as closely as possible and therefore closely spaced. Only limited space is available for means for distributing cooling water, and this space is in an inconvenient configuration. the result,
Only the central part of the casting skin between two adjacent rollers can be effectively cooled, whereas the rollers themselves do not contribute to the cooling. Since the skin of the casting is unsupported in the area being cooled, it can swell as it moves between the layers of the rollers and is often deflected outwardly and inwardly. The resulting structure as a solidified casting is adversely affected by these deflections of the casting skin.

Ingots with different cross-sectional dimensions within a very wide range are required by the pressurized industry. If such ingots are made by cutting a continuous casting of the desired cross-section to length, the current equipment for continuous casting must be changed to account for the change in cross-section. No. To eliminate the need for such expensive operations and associated equipment downtime, it is customary to cut the ingot from the slab;
This slab should be as wide as possible for economic reasons, but it should also have wide sides that are both flat and parallel. For example, an ingot made by longitudinally cutting a slab having a width of 2700 mm cannot be satisfactorily rolled if one end of the slab is approximately 1.5 mm thicker than the other end. Because the convex shape of continuous slab casting guided by the rollers is determined by the deflection of the rollers, slabs cannot be cast to the widths permitted by current foundry technology. In practice, the permissible slab width is determined by the deflection of the rollers. It goes without saying that the straightness of the rollers must be varied in proportion to the width of the slab. For this reason, the rollers required to guide slabs with a width exceeding a certain limit are too heavy and support the skin of the continuous casting at points separated by excessive distances, so that the width of the slab Certain restrictions are currently in place.
In response, it has been suggested to support the roller not only at its ends but also at the midpoint of its length, or to use composite rollers with split lengths, but these measures have not been successful. It has not yet been proven to be satisfactory.

It has also been proposed to provide a continuous casting installation in which the continuous casting is guided along an arcuate path and supported by moving beams arranged on opposite sides of this path; has already been constructed. The moving beam is curved and extends along and conforms to the arcuate continuous casting. Two groups of such beams face each wide side of the continuous casting, and the beams of each group are arranged between two adjacent beams of the other group.

Each group of beams can be moved into contact with the casting, moved longitudinally of the casting into contact with it, and then moved away from the casting and returned to its initial position in this state. be able to.

The periodic motions of the two groups of longitudinal beams are out of phase by about 1/2 period. Such equipment provides improved support and cooling of the continuous article because the longitudinal beams can be cooled and are in surface contact with the skin of the continuous casting. On the other hand, if large slabs are to be handled, the weight of the equipment for supporting the continuous casting, especially the mass to be moved, is high.

The same is true if each longitudinal beam does not extend over the entire length of the arcuate section of the continuous casting, but the length of the beam is divided.

For continuous castings with large cross-sections, the arcuate section may have a length of, for example, 15 m or more. In such an arrangement, the overall guide section is made up of a number of adjacent sub-sections. Although this arrangement results in a reduction of the overall mass to be moved and a division of this mass, this does not reduce the difficulties associated with the drive. These difficulties mean that the components for driving each beam must be arranged above or below the continuous casting so that they are exposed to the heat radiated from the casting. This is due to circumstances. As a result, the entire drive cannot be monitored without difficulty, is inaccessible and is exposed to high temperatures during operation. For this reason, even minor defects can only be removed when the equipment is shut down and allowed to cool down. On top of that,
Removing and replacing these moving beams, which are located between the two outermost beams and are subject to relatively high wear, is a difficult and time-consuming task, and even if the mass to be moved is subdivided. However, there is an upper limit to the realistically acceptable frequency of beam motion.

Continuous casting equipment is currently in use that includes one type of guiding device or another. Until now, moving beams have not yet been decisively successful, so guiding devices consisting of rollers are still being built.

Slabs with wide, fully parallel sides can now be produced up to widths of 180-220 cm, but this involves construction costs due to mechanical rather than metallurgical requirements. 300 from the aspect of casting industry technology alone
It would be possible to cast slabs ˜400 cm wide or even 500 cm wide, and this casting could be achieved at relatively low cost. However, limitations are imposed by the equipment for guiding the continuous casting. Particularly when rollers are used for this purpose, these devices have inherent difficulties in countering the fabrication of slabs with such large widths as parallel wide sides.

One object of the present invention is to provide an apparatus which allows the casting of slabs of a much larger width than is currently possible with continuous casting, and which has a lower overall weight than known guiding apparatuses, and which has a The object of the present invention is to provide a device for guiding castings in a continuous casting installation, in which the mass of the casting is guided by a device in which the mass is subdivided into a large number of relatively small masses.

In a continuous casting installation of the type first specified above, this object is achieved by the invention, which comprises the following. That is, in the present invention, all the moving beams are arranged as a pair of moving beams extending transversely to the longitudinal center plane of the continuous casting and disposed on opposite sides of the path of the casting. The beam is connected to one end of at least one support rod;
The support rods are supported on the guide frame by one or more support rods that move the moving beam into and out of contact with the continuous casting to direct the moving beam away from the mold or along the path of the casting. The casting guiding device is designed to be driven to move in the approaching direction. Also any cast straight line preferably consisting of a similarly transverse beam supported on a guide frame by a support bar or on an additional frame by another support bar combined with this support bar. The curing device is allowed to come into contact with and leave the continuous casting.

The guide device of a continuous casting installation according to the invention has a significantly lower weight than comparable guide devices with longitudinally moving beams. The weight savings in equipment casting slabs with widths of about 200 cm or more are significant, and these savings increase significantly and progressively as the width of the slabs to be cast increases. The drive or its parts can be arranged laterally to the path of the casting and can be simple in design and reliable in operation. That is, they are located outside of areas exposed to high temperatures, and all of these can be conveniently monitored. The transverse beams may be relatively narrow so that they can be spaced far enough apart to readily permit installation of equipment for effective cooling of the continuous casting by means of a sparged liquid refrigerant. Since the moving mass is subdivided into a large number of smaller mass parts, periodic movements can be performed more frequently than in conventional facilities.

The continuous casting has a temperature of at least 1000°C when it enters the guide section and a temperature of about 500°C when it leaves the guide. Each transverse beam is in contact with the continuous casting over a strip-shaped area in which there is only a slight temperature gradient along the casting, for example 0.3° C./cm. For this reason there is no risk of bending of the transverse beams as a result of temperature differences.

In a highly desirable arrangement, a pair of transverse beams with guiding devices and/or straightening devices and a number of successive pairs of such beams in their associated struts are provided within a common beam mounting frame. They are attached to form a unit which is removably secured to the guide frame. Preferably, all such units consisting of the same number of pairs of transverse beams are identical. The adoption of such an arrangement facilitates the installation and removal or replacement of the transverse beams, and these operations can be performed from the sides of the continuous casting path. Although each transverse beam may be supported by two or more support bars, it is preferably supported by one support bar which preferably extends the entire length of the beam. . It is preferable to provide a separate drive, at least for this transverse beam closest to the mold, and even more preferably for each transverse beam.
Can the guiding device be simplified so that a number of consecutive transverse beams are driven by a common drive?
Also, whether it can be simplified so that a common drive is provided for a set of two or three consecutive transverse beams, for example, depends on the nature of the metal being cast and also on the cross-section of the continuous casting. It is determined by the working conditions. In such a case, one transverse beam of each set is driven directly and is coupled to and drives one or more other beams of the set.

Separate drives are provided for the transverse beam closest to the mold and for each of a number of immediately following transverse beams, and for two or three or more of the remaining transverse beams. For each set,
It is often advantageous to employ combinations in which a common drive is provided. Near the mold, the solidified skin of the continuous casting is still thin.
May swell under static iron pressure. In this region, the width of each area on which a continuous casting is supported is equal to the width of one transverse beam, and these areas are
spaced apart slightly larger than the width of the two transverse beams,
Therefore, a continuous casting should be able to swell only over relatively closely spaced areas on which it is supported. Since the unsupported area is short and small, such swelling is not significant and grows only gradually. Such blistering can furthermore be avoided if the desired conditions are that the transverse beams move periodically with a sufficiently high frequency, so that the continuous casting undergoes only slight bending.

The forces exerted and removed by the transverse beams are generated and removed, for example, by hydraulic actuators that are reciprocatable along the guide device. However, 1 supporting the transverse beam in the manner of connecting pieces
It is even more preferred to provide one or more support rods, and the connecting piece is preferably hinged at one end to the transverse beam and at the other end to the guide frame or beam mounting frame. A transverse beam connected to such a connecting piece is more easily movable and can automatically adjust itself to adapt to the shape of the surface of the casting. In one preferred arrangement, each connecting piece associated with at least one transverse beam of several pairs of transverse beams, and preferably with each of all pairs of transverse beams, is connected by one bar. It has a hinge that is held in place and can be pushed by a force and moved against this force, and can also be specially constructed with a piston rod of a hydraulic actuator or similar. good. In that case, since the transverse beams are allowed to flex, there is an upper limit on the compressive force that can be applied to the continuous casting. In addition, this rod is arranged in a guide frame so that each beam can be adjusted relative to the other beams, and the arcuate path determined by the guide device can be easily and accurately adjusted to the desired configuration. or can be adjustably fixed to the beam mounting frame. Its desired form can be changed. In particular, the arcuate path can be adjusted to the configuration that proves most desirable for the entire manufacturing process, and this adjustment can be made after work has begun. The choice of design of the transverse beams is to a large extent unique to the desired form of the arcuate course. For example, a transverse beam intended for a guide section with a circular track can easily be combined with a guide section defining a track with a composite curvature, and vice versa. This is not allowed for longitudinally moving beams. This is because these moving beams must match exactly the curvature of the continuous casting, and a constant curvature in the longitudinal direction of the continuous casting is required. In one preferred embodiment, each support bar supporting a transverse beam constitutes a clasp joint, and in at least one of the plurality of clasp joints associated with one transverse beam. , a miter rod hinged to the transverse beam has one cam groove near the transverse beam, and the other miter rod has one cam groove near the common hinge; Further, a crank pin of a driven crank having a fixed axis is inserted into each cam groove.

Alternatively, each support bar supporting the transverse beams is constituted by a pivoting support arm, at least one of which is driven to swing, and for this purpose, for example, a fixed axis is provided. It may be provided with one cam groove into which a crank pin of a driven crank held by the cam groove is inserted.

In that case, the end of the pivot support arm remote from the continuous casting is controlled by a hydraulically driven actuator.
Preferably, it is movable towards and away from the continuous casting.

In a continuous casting installation equipped with a guiding device according to the invention, the continuous casting can be transported through the transverse beams in surface contact with the continuous casting, provided that the transverse beams are sufficiently cooled. Since dissipation occurs, continuous castings can be cooled in a simple manner. For this purpose, each connecting piece supporting a transverse beam is provided with a preferably hollow cylindrical part or a support trough at the end close to this cross beam, and this transverse beam is It is also possible to provide a cylindrical part or a supporting trough or a preferably hollow cylindrical part in surface contact with the cylindrical part. In that case, the hollow cylindrical part is adapted to be cooled on its inner surface and, for example,
Apparatus may also be included for dispensing liquid refrigerant onto the inner surface of the cylindrical part. Such a cooling device provides sufficient cooling of the transverse beams, the connecting pieces and also the hinges between the beams and the connecting pieces. In many cases, it is not necessary to spray the continuous casting with cooling water, for example if the transverse beams are cooled.

In other cases, the distribution of cooling water over the continuous casting is desirable, especially when the cross-section of the continuous casting is large. It contains a number of chambers separated by girder-like walls and is open on their front side facing the continuous casting and also on their rear side, or by a rear wall perforated on the rear side. It has been found that effective cooling can be achieved by means of transverse beams that are closed together. In such an arrangement, the nozzle for spraying cooling water through the chamber onto the surface of the continuous casting is carried by a beam on its rear side. Since the transverse beam is not moved relative to the continuous casting with which it is in contact, no sliding friction occurs thereby which could stress the solidified skin of the continuous casting.

A very important part of any continuous casting equipment is the starting rod. In arcuate-travel continuous casting installations, the starting rod consists of a number of articulated rod sections.

In known installations, a relatively long starting rod is required, which cannot be handled without difficulty.
In a continuous casting installation with a guide device according to the invention, the transverse beams provided on the guide device constitute a number of consecutive parts that are in contact with the continuous casting at close distances and in surface contact. If this transverse beam is properly matched with the starting rod part, it can be compared to a Completely satisfactory results can be achieved even with a shortened starting rod. The rod part of such a starter rod consists of a crossbar having approximately the same width in the transverse direction and having a longitudinal profile at one or each end. The guide portion has on one or each side a contour cooperating with the end of each starting rod part and complementary to the contour of the starting rod part.

In an arcuate guiding section with a radius of about 10 m, it is sufficient to provide such a starting rod with a length of 2 to 3 m. Such a starting bar can be easily maneuvered by an overhead hoist.

Some embodiments of the invention will now be described more fully and by way of example with reference to the accompanying drawings, which are diagrammatically shown in various scales.

The arcuate continuous casting installation shown in FIGS. 1a and 1b includes a coolable, open-ended mold 1 connected to a horizontal beam 2, which is held by supports 3. be done. A cooling section 4 is provided below the mold. In this cooling section, the continuous casting 5 emerging from the mold is guided by a grid of crossbars. The cooling section consists of a refrigerant distribution device, such as a nozzle or nozzle tube, for distributing liquid refrigerant onto the surface of the continuous casting through grid holes. Next to this cooling section is a guide device, which consists of a number of transverse beams supported by arcuate guide frames 6. The continuous casting moves generally vertically from the cooling section and is deflected horizontally along an arcuate path in the guiding section. The transverse beams are arranged in an upper layer and a lower layer. The transverse beams of the upper layer face the concavely curved upper surface of the continuous casting. The transverse beams of the lower layer face the convex lower surface of the continuous casting.

The transverse beams are arranged in pairs. In each pair, the beams 7 of the upper layer are aligned with the beams 8 of the lower layer. In this embodiment, each pair of transverse beams is mounted within a beam mounting frame 9 (FIGS. 2 and 3) and each mounting beam 7 and 8 is one
The support rod extends over the entire length of the beam mount or over a significant portion of its length. Each support bar is comprised of a clasp joint 70 or 80. Although two or more support bars may be associated with each transverse beam, the use of one support bar for each beam is usually simpler. The transverse beam 7 or 8 is connected to the retaining rod 71 of the adjacent retaining joint.
or hinged to the free end of 81. The free end of the other miter rod 72 or 82 is hinged to a cross member 90 or 92 of the beam mounting frame. The beam mounting frames are removably connected to the arcuate guide frame 6 by means of bolts or the like, so that they can be individually assembled or removed from the side in a simple manner. This operation does not involve a large amount of work and can be accomplished without the use of equipment other than the overhead hoist currently in use for the facility. Another advantage is that it is a simple and highly economical construction. The guide frame may consist of a simple arcuate beam and is loaded solely by the weight of the unit consisting of the beam mounting frame, the transverse beam and the drive connection thereto, and also by the weight of the continuous casting. be done. All forces and reactions required to control the advancement of the continuous casting are supported by the beam mounting frame 9. These forces and reactions essentially consist of tensile forces to be supported by the longitudinal members of the beam frame.

Each beam mounting frame 9 consists of two longitudinal members 91 which are connected at each upper end with a cross member 90 and each at their lower end with a cross member 92. Lateral member 92
is equipped with a tread, which can be bolted to the guide frame. Each of the two transverse beams 7 and 8 is connected to the adjacent miter rod 71 or 81 by a hinge, which hinge is held by the transverse beam and extends over its entire length. an extending cylindrical retaining trough 73 or 83 and a hollow cylindrical part 74 or 8 in surface contact with the retaining trough and held by the free end of the miter rod;
It consists of 4. The hollow cylindrical part may include a nozzle tube for dispensing liquid refrigerant on that side of the inner surface of the cylindrical part opposite the holding trough. If the transverse beams are made of a material with high thermal conductivity, their cooling alone is sufficient.

Another embodiment of the transverse beam 100 is clearly shown in FIGS. 8 and 9. This horizontal beam 1
00 comprises a number of chambers 101 whose axes are perpendicular to the wide sides of the continuous casting. This chamber is laterally closed and partitioned by a spar-like partition 102. The chambers are open at least on the front side facing the continuous casting, and the rear side thereof is either open (FIG. 8) or partially by a rear wall 103 with holes 104 adjacent to each chamber. Closed. A hole at the rear of each chamber is aligned with a nozzle 105 for dispensing liquid refrigerant through the chamber and onto the surface of the continuous casting.

This nozzle is connected to a transverse beam and can e.g.
It is held by a water supply pipe extending between the two end walls 106 of the beam. Continuous castings can be satisfactorily supported and effectively cooled by such transverse beams.

The retainer joints 70 and 80, in particular their retainer rods 71, 72 and 81, 82 connected by hinges 77 or 87, for example consisting of pin hinges, extend over the entire length of the transverse beams 7 and 8. It may consist of hollow beams extending over and reinforced by transverse walls and hinged on their outer sides. In the embodiment illustrated in FIG. 2, the miter rod 82 of the lower miter joint is hinged on a pin 64 that is secured to a transverse member 92 of the beam mounting frame. The hinge pin for the miter rod 72 of the other miter joint is held by the transverse member 90 of the beam mounting frame and is adjustable in a direction perpendicular to the continuous casting. One hydraulic actuator 93 is mounted on the cross member near each end thereof. The two actuator piston rods are connected to a crossbar that is hinged to the free end of the miter rod 72.

In this arrangement, the connection between the retainer rod 72 of the upper retainer joint 70 and the beam mounting frame is
Even when the equipment is in operation, it is movable in a direction perpendicular to the continuous casting against an adjustable force exerted by a hydraulic actuator.

It is clear from FIG. 3 that the mitered rod 82 of the lower mitered joint 80 can also be connected to the beam mounting frame by means of a hydraulic actuator 93.

A unit need not consist of only one pair of transverse beams with interlocking joints or other support bars, but may consist of two or three (Figure 5) or more adjacent pairs. The transverse beams and their associated miter joints or other support bars may also be mounted together in one common beam mounting frame to form a unit that can be similarly installed or removed. good.

In the guiding device, the continuous casting must be advanced and deflected, and for this purpose must be braked rather than pulled. For this purpose, the transverse beams must undergo controlled movements in contact with the continuous casting. The continuous casting must be in contact with the transverse beam at all times so that its movement can be controlled by the transverse beam. For this purpose, several pairs of transverse beams are combined into several groups, and the transverse beams of each group are separated from the motion of the beams of the other groups by approximately 1/2 period out of phase. Then,
be moved in unison. As a result, a group of beams is in contact with the continuous casting and, together with the advancing casting, is moved a distance in this contact.

At the same time, the other groups of beams are released from the casting and returned to their initial positions. A separate drive is provided for each transverse beam;
The transverse beams may also be combined such that each beam except the last beam of the group is located between two beams of another group.

Alternatively, a common drive may be provided for two, three or more consecutive beams forming a subgroup and preferably mounted within one common beam mounting frame. You can also.

Within the invention these concepts can be combined. Near the mold, the skin of the casting is thin, so the distance between the areas where the casting is supported must be small. At the exit end of the guide, the skin of the continuous casting is already thick enough to resist the static pressure of the iron, even if the skin is exposed over a relatively long distance. For this reason, a number of pairs of individually driven transverse beams are provided close to the mold, followed by subgroups of two or more pairs of transverse beams with a common drive. You can do it like this.

The retainer joints constituting the support bars may be light in weight and may consist of plates reinforced, for example, by longitudinal ribs. There is no practical need for a heavy material design as there is no practical risk of bending a relatively short retainer rod subjected to compressive force stresses. A peg-shaped connecting piece that can be used for the purposes of the invention is shown in FIG. 4 in four phases of movement a, b, c, d. The retainer rod 72 is provided with a cam groove 78 near the common hinge 77. One retainer rod 71 is provided with a cam groove 79 near its hinged connection with the transverse beam 7. These cam grooves 78 and 79 are formed in particular in a disc which is fixed to the retaining rod, and which are rotatable on a fixed axis in the same sense with a phase shift of approximately 90°. The crank pins 79' and 79' fit into these, respectively. In the four upper diagrams of FIG. 4, cranks 78' and 79' have their respective movements a
- shown in position at the beginning of d. phase a
At the beginning of , the transverse beam 7 is in contact with the continuous casting, which is advanced during this phase by the distance indicated by the arrow s. At the beginning of phase b, the transverse beams begin to separate from the continuous casting. This movement continues until the end of this phase,
Following that, until the end of phase c (arrow h only)
A return movement of the separated beam takes place. In phase d the beam is moved into contact with the continuous casting.

The vector diagram indicates the distance moved by the beam in each phase and the three preceding phases.

These distances are represented by both sides of the quadrilateral. Although the cam groove is shown as a straight groove in FIG. 4, it is actually preferred that it be an arcuate cam groove so that the lifting and advancing movements of the transverse beam can be performed more accurately.

Adjacent peg joints are connected to and driven in unison by cranks 89 and connecting rods 88 provided near the ends of the peg joints near the transverse beams. Good (5th
figure). If adjacent miter joints are driven jointly, it is sufficient to drive one of the interconnected crank groups.

Relatively little power is sufficient to drive each pair of transverse beams since the mitered joint exerts a high force to bring the beams into contact with the continuous casting. For this reason, it is recommended to provide an individual drive for each pair of beams or for each set of pairs of connected beams. Since the electric motor, transmission and all other parts for transmitting the power are very light, they can be mounted on both sides of the guide frame or on the longitudinal members of the beam mounting frame, if suitable support arms are provided. For example, other alternatives to the beam mounting frame are not required since it can be mounted on top.

Since compressed air and hydraulic fluid are available practically at all times, the drive prime mover may consist of a compressed air or hydraulically driven prime mover, but preferably an electric motor that can be easily and reliably timed. It is preferable. These two cranks, relatively close to the continuous casting and combined with two mutually oppositely driven beams, are connected to a reduction gear and two universal shafts extending from this gear (Figure 3). Preferably, the motor is driven by one electric motor M ₁ via the motor M 1 . The drive crank of the latch, which is located near the common hinge, can be driven by another electric motor M ₂ (upper part of Fig. 2) or from another crank, for example by a chain drive (lower part of Fig. 2). It may be driven either through the following steps.

Movement in the longitudinal direction of the casting and in the transverse direction thereto can be imparted to the transverse beams in various ways. This operation can be accomplished in a very simple manner with the aid of the support rods shown in FIGS. 6 and 7. Each of these support rods is
It consists of a simple pivot support arm 111 connected at one end to the transverse beam 7, for example by a hinge. The other end of the swing support arm 111 is connected to the piston rod 1 of a double-acting pneumatic or hydraulic actuator 112.
13 and hinged. The cylinder of this actuator is divided into two chambers 114 and 1 by its piston.
It is divided into 15. The chamber 114 is the pivot support arm 11
1 and in constant communication with a source of compressed air, such as an air container under a predetermined pressure. As a result, the piston is constantly pushed towards the continuous casting by a force determined by the piston area and the air pressure, and this force can be adjusted by changing the air pressure. Another chamber of the cylinder 1
15 can be selectively connected and disconnected from a pressure source consisting of a container containing a gas or a pressure liquid under relatively high pressure (which is preferred). When chamber 115 is relieved of pressure,
The force that brings the transverse beam into contact with the continuous casting is
4 corresponds to the load applied to the piston by the compressed air. When pressurized fluid is pumped into chamber 115 and a high pressure is applied therein, the forces keeping the transverse beam in contact with the casting are overcome, and the transverse beam is therefore pulled away from the casting. It will be done.
The movement of this piston for bringing the transverse beam into and out of contact can be limited by a stop piece. That is, the stroke of the piston can be limited by the stop piece. In this way a contact-break motion is imparted to the transverse beam.

Movement in the longitudinal direction of the casting can be imparted to the transverse beams by means of a Scottland transverse beam.
For this purpose, the pivoting support arm 111 has an elongated hole parallel to the piston rod 113 into which a pin protruding from the crank 117 is fitted, the crank rotating on a fixed axis, and arranged close to the beam 7. It is preferable that The radius and speed of the crank then determine the stroke and frequency of longitudinal movement of the casting. The time during which chamber 115 is connected to the associated pressure vessel must be compatible with the rotation of the crank. This point does not need to be explained in further detail. It will be appreciated that it is better to provide two cylinders rather than one cylinder if the two cylinders mentioned above are connected by one common piston rod.

The movement into and out of contact with the casting need not be imparted to the transverse beams solely by compressed air or hydraulic drives, which are articulated with the outer ends of the support rods. a vertically slidable nut 11 which is also held against rotation;
8 and a rotatable, axially immobile screw 119 adapted to be driven by an electric motor 121 by means of a transmission 120 .

The difficulties involved in providing such or similar drives are less than might be expected in view of the above notes.

For example, the cylinder of the actuator may be structurally combined with and preferably adjustably secured to a guide frame or beam mounting frame so that the continuous casting extends perpendicular to the plane on which it is to be supported. I can do it. Such an arrangement facilitates adjustment for continuous castings of different thicknesses.

In the guide device designed according to the invention there is no large single mass and the forward movement of the continuous casting is carried out in rapid succession with a frequency of e.g. 30 steps per minute or more. As already mentioned, it can be divided into smaller stages. In this case, the time interval during which part of the hardened skin of the casting is unsupported is only 2 to
It's only for 3 seconds. Since the skin of the casting swells only gradually, only a very small bulge can be formed by the skin during such a short time interval, and the bending of the skin of the casting is negligible. reduced. Such bending adversely affects the development of the desired structure in continuous casting.

The guide frame 6 can also be structurally simple, especially if it is designed to hold a beam mounting frame.

From Figures 1a and 1b, it can be seen that the guide frame consists of a number of continuous, generally arcuate longitudinal beams, which are constructed from box sections and bent to fit the desired form of the continuous casting. It is clear that it can have an upper wall or an upper surface that is curved. Each of these longitudinal beams is immovably supported on the foundation approximately midway through its length and is movably supported at each end.

In particular, that end part of the longitudinal beam close to the mold is supported vertically movably, for example on the plane of the column 3, and the other end part of the longitudinal beam is mounted on a foundation or on a support. Supported for horizontal movement. The top surface of all longitudinal beams lies in a cylindrically curved plane with a cross-sectional shape that matches the desired arcuate form of the continuous casting to be guided, and the beam mounting frame lies on said top surface. It can be mounted and removably secured to the longitudinal beam, for example by bolts. As stated above, no strict fit is required. The beam mounting frame or the unit containing this frame can be installed from the side and for this reason does not have to be lifted to large extents beyond their installed height. Since the drive is arranged laterally, such a guide frame 6 and transverse beams 7, 8 can also be inspected from below. A fixed support approximately centrally between the devices movably supporting the ends of the beam or an arcuate beam from below, where temperature-induced changes in length occur in an essentially heat-insensitive region. This ensures that the longitudinal beams are not subjected to bending loads even during such operations.

It has already been mentioned that in each continuous casting installation a starter rod is required. If the moving beam for supporting the continuous casting and controlling its advancement is constituted according to the invention by transverse beams spaced longitudinally of the continuous casting, this transverse beam is Because the targets can be narrow and closely spaced, continuous castings can be supported in a large number of relatively closely spaced areas. For example, center planes of adjacent transverse beams may be approximately 40 cm apart, and adjacent lower edges of adjacent transverse beams may be approximately 10 cm apart. In such equipment, the starting rods are connected by hinges, and the distance between adjacent hinge axes is the pitch of the transverse beam,
i.e. can be equal to the distance between the center planes of adjacent transverse beams, and in the above example also 40 cm
It can be composed of a large number of parts such that Such a starter rod can be relatively short, flexible and relatively light in weight, so that it can be easily handled and requires little space (FIG. 1a). The starting rod 131, which is composed of, for example, 11 parts 132, is mounted above the horizontal beam 2 or between the longitudinal beams of a guide frame, and is preferably mounted on a wheeled truck 133, which is movable along the guide frame. can be held by. The starting rod is the same electric motor 1 as the trolley.
35 or on an endless chain or similar 134 designed to be driven by another electric motor.

FIG. 10 is a drawing similar to FIG. 2 and shows two transverse beams 7 and 8, which are designed to be driven by a peg joint. 1 part 1 of starting rod
32 is arranged between the transverse beams 7 and 8. This starting bar part consists of a crossbar with a middle part of the same length as each transverse beam 7 or 8 and with a middle part having substantially the same cross-section as the continuous casting to be formed. . This intermediate section is adjoined at each end by an end 136 having a longitudinal profile consisting of, for example, one or more longitudinal ribs. Its longitudinal profile is, on opposite sides of each transverse beam 7 or 8, the corresponding profile of two extensions 137, 138 provided, for example, on sufficiently wide miter arms 71, 81. and complementary shapes. The mutual contact profile of the end of the rod and the extension prevents the starting rod from sliding laterally out of the space between the two layers of the transverse beam.

Next to the arcuate guide device there is also a straightening device (FIG. 1b) consisting of transverse beams designated 7, 8. These transverse beams are arranged in matched pairs of beams located on opposite sides of the continuous casting 5 and are movable into and out of contact with the casting 5, and are movable into and out of contact with the casting 5. 5, and is supported on the frame by a support rod. These support rods are connected to a miter joint 71,
72 and 81, 82, and the transverse beams of each pair of straighteners are preferably mounted within a beam mounting frame. The required straightening forces can be exerted without difficulty by means of a latched joint for driving the transverse beams in the straightening device. These required straightening forces may be stronger than those required to support curved sections of a continuous casting, because the continuous casting is This is due to the fact that it has already solidified considerably. For these reasons, the transverse beam and the associated drive in the straightening device should preferably have larger dimensions than the transverse beam and the associated drive in the guide device. It is often possible to use one and the same unit for the guiding device and the straightening device, which is clearly desirable.

Cooling of continuous castings in guiding devices with rollers is difficult and cannot be achieved satisfactorily. In guide devices with moving longitudinal beams, the heat is dissipated over a relatively large area and significant temperature differences are thus avoided, but the cooling is not changed in the longitudinal direction of the continuous casting.

Different conditions are obtained in the guiding device according to the invention in which a successive transverse beam or group of transverse beams can be subjected to different cooling effects without difficulty. For this reason, continuous casting processes can also be applied to steel components. Steel compositions have previously been unsuitable for continuous casting because they are too sensitive to the dissipation of improperly applied heat.

In the continuous casting equipment according to the invention, each part of the continuous casting can be subjected to an equal and predetermined cooling effect. The cooling by the transverse beams may be supplemented by cooling carried out with a liquid coolant distributed over the casting, especially in the region of the arcuate part of the casting relatively close to the mold.

Only one miter joint or a pivot support arm or other support rod in combination with two of the two mutually opposite transverse beams is provided in the guiding device, in particular in the beam mounting frame, with elastic or permanent Even when mounted in such a way that it can be moved against a certain slope, there is an upper limit to its supporting capacity. If each of the two transverse beams of a pair is mounted so as to be movable against such an inclination, the arcuate form of the continuous casting is not strictly fixed; Even if a transverse beam is pressed against the casting, it can be taken simply as a result of the support and the action of gravity, assuming that the above forces exerted by the beam on the casting do not exceed a certain limit. It can only maintain the desired shape.

As a result, the stresses in the solidified skin of the casting are reduced and the casting is not subjected to excessive forces in its longitudinal direction as it is advanced, so that it maintains the preselected constant arcuate form precisely. There is no need to choose. If the transverse beams are installed in a beam mounting frame, each beam should be Since the mounting frame can be held reliably and without difficulty in the desired position by means of the shims, a sufficiently approximate adaptation to the given arcuate form of the transverse beam can be achieved.

[Brief explanation of drawings]

A drawing that should be seen together with Figures 1a and 1b,
1 is a longitudinal sectional view of a continuous casting installation with an arcuate course of a guiding device according to the invention; FIG. Figure 2 shows the machine frame. FIG. 3 is a sectional view taken along the - line in FIG. 2. FIG. 4 shows the peg in four phases of movement. FIG. 5 shows a group of three mitered joints driven in unison.
FIG. 6 shows the pivot support arm and its drive. FIG. 7 shows a modified pivot support arm. FIGS. 8 and 9 are a perspective view and a cross-sectional view, respectively, of the transverse beam. FIG. 10 shows the guide device into which the starter rod is pushed. 1... Mold, 4... Cooling part, 5... Continuous casting, 6... Arcuate guide frame, 7, 8, 100... Moving beam, 9... Beam mounting frame, 70, 80, 111...
Support rod, 71, 72, 81, 82... Retaining rod, 73, 74... Holding gutter, 77, 87... Hinge, 78, 79... Cam groove, 78', 79'... Crank, 93 , 112...hydraulic actuator, 101
... Small room, 102 ... Partition, 103 ... Rear wall, 104 ... Hole, 105 ... Nozzle, 113 ...
...Piston rod, 117...Crank, 131...
Starting rod, 136... end, 137, 138... extension.

Claims (1)

[Scope of Claims] 1. A coolable, end-open mold for delivering a continuous casting; a casting guide for cooling the casting on said track, said casting guide defining a longitudinal central plane of said track, and a guide frame, within said guide frame; two layers of moving beams attached and disposed on opposite sides of said track, and moving the moving beam from an initial position spaced from said track into contact with a casting on said track; a step of moving said movable beam in contact with the casting along said path by a predetermined distance in a direction away from said mold; said moving beam in successive cycles comprising moving said moving beam away from said path and moving said moving beam along said path to its initial position while said moving beam is being disengaged from the casting; a drive device for moving each of the moving beams, and each of said two layers of moving beams comprises a first group and a second group of moving beams, and further said drive device moves said moving beams. The moving beams of the first group of layers are moved to the second
In a casting guide device in a continuous casting facility operable to move with a phase shift of about 1/2 period from a group of moving beams, each of said moving beams extending transversely to a plane; said moving beams being arranged in aligned pairs disposed on opposite sides of said path; and a plurality of support bars being mounted within said guide frame. , each of said moving beams is connected at one end thereof to at least one said support bar and is connected to at least one said support bar in said guide frame.
Casting guide device, characterized in that it is supported by two said support rods, and said drive device is operatively connected to said moving beam by said support rods. 2. The casting guide device according to claim 1, wherein the course is a straight course. 3. A pair of said moving beams and a support bar associated with said pair are mounted on a common beam mounting frame to form a unit, said unit being removable on said guide frame. Casting guide device according to claim 1, which can be attached. 4. A plurality of successive pairs of said moving beams and support bars associated with said plurality of pairs are mounted in a common beam mounting frame to form a unit, said unit comprising said plurality of moving beams. Claim 1, which is removably mounted on the guide frame of
Casting guide device as described in Section 1. 5. Each of the plurality of sets of the same number of successive pairs of said moving beams and the supporting bars associated with said set of moving beams are each mounted in one common beam mounting frame to form one unit. death,
2. A casting guide according to claim 1, wherein each of said units is removably mounted on said guide frame and wherein each of said units is identical. 6. Casting guide device according to claim 1, wherein each of said moving beams is connected to only one of said support bars. 7. The casting guide device according to claim 1, wherein the support rod extends over substantially the entire length of the moving beam with which it is combined. 8. The casting guide system of claim 1, wherein said drive comprises a separate drive for driving each of said pairs of moving beams closest to said mold. 9. The casting guide system of claim 1, wherein said drive comprises a separate drive for driving each of said plurality of pairs of moving beams closest to said mold. 10. The casting of claim 1, wherein said drive device comprises a separate group drive for driving each moving beam of a number of successive groups of said moving beams of the same layer. Guidance device. 11 at least one of said support bars has a first end connected to said moving beam associated therewith and a second end of said hinged end connected to said guide frame;
A casting guide device according to claim 1, comprising a connecting piece having an end portion. 12. Each of said moving beams has a front side facing said path and a rear side facing away from said path, and a number of chambers separated by a distance along said moving beam. , each of said chambers being formed with a number of girders dividing each adjacent one of said chambers from one another, each of said chambers being open on said front side and at least partially open on said lateral side. and further characterized in that each of said moving beams carries on said rear side a nozzle arrangement for discharging cooling fluid through said chamber onto the surface of the casting above said path. The casting guide device according to item 1. 13. said groups of moving beams have approximately the same width and are provided with a starting bar movable along said path, each said starting bar being hinged and having approximately the same width as said moving beam; comprising a number of crossbars interconnected with each other, each of said crossbars having at least one end extending laterally beyond said beam when said starting bar is disposed over said path. said guide frame having a projecting longitudinally contoured end and further projecting, on at least one side, laterally beyond said moving beam to direct said starting rod along said path; 2. A casting according to claim 1, having portions complementary to and interengaging with said contoured end of said crossbar to induce movement. Guidance device. 14 A coolable end-opening mold for delivering continuous castings, forcing said continuous castings on a predetermined arcuate path in a direction away from said molds, and forcing said castings on said path. and a straightening device for forcing said casting along a straightening path following said arcuate path, said guiding device being arranged in a longitudinal direction of said path. a guide frame, two layers of moving beams mounted within said guide frame and disposed on opposite sides of said path; moving the movable beam, which is in contact with the casting, along the path a predetermined distance away from the mold; a step of moving said moving beam away from said path in order to remove said moving beam from said casting; and moving said moving beam along said path while said moving beam is being removed from said casting. and a drive device for moving each of said moving beams in successive cycles, including the step of moving said moving beams to said initial position, and each of said two layers of moving beams comprises a first group of moving beams and a second group, and the driving device is configured to move the moving beams of the first group of both layers with a phase shift of about 1/2 period from the moving beams of the second group. and wherein said straightening device is operable to define a longitudinal center plane for said straightening path and to move a straightening beam from an initial position away from said straightening path. the step of bringing the straightening beam into contact with the casting on the straightening path, moving the straightening beam in contact with the casting away from the arcuate path by a predetermined distance along the straightening path; moving the straightening beam in a direction away from the straightening path to separate the straightening beam from the casting; an additional drive device for moving each of said straightening beams in successive cycles including moving said straightening beams to an initial position along said straightening path while being disengaged; and each of said layers of said straightening beams comprises a first group and a second group of said straightening beams, and said additional drive means straightens the first group of said straightening beams. In a casting guiding and straightening device in a continuous casting facility operable to move a straightening beam with a phase shift of about 1/2 period from a second group of straightening beams, said moving beam each extending transversely to said longitudinal central plane of said arcuate path, said moving beams being arranged in aligned pairs disposed on opposite sides of said arcuate path; a plurality of support rods are mounted within said guide frame, each of said moving beams being connected at one end thereof to at least one said support rod; said straightening beam extends transversely to said longitudinal central plane of said straightening path; said straightening beam is supported by said straightening beam; arranged in aligned pairs located on opposite sides of the track, each of said straightening beams being connected at one end thereof to at least one of said additional support bars; supported by an additional support bar, and wherein the additional drive device is operably connected to the straightening beam by the additional support bar. Casting guidance and straightening equipment. 15. The casting guiding and straightening device of claim 14, wherein said additional support bar is retained by said guide frame. 16. The casting guiding and straightening device of claim 14, wherein said additional support rod is mounted within an additional guide frame. 17. Claim No. 1 in which a pair of straightening beams and an additional support bar associated with the pair are mounted in a common beam mounting frame to form a removably mounted unit. 1
Casting guide and straightening device according to item 4. 18. A plurality of successive pairs of straightening beams and additional support bars associated with the plurality of pairs are mounted in a common beam mounting frame to form a removably mounted unit. A casting guiding and straightening device according to claim 14. 19 A plurality of successive pairs of said moving beams and support bars associated with said plurality of pairs are mounted in a first common beam mounting frame removably mounted in said guide frame; a plurality of consecutive pairs of straightening beams forming a single unit and further comprising a plurality of consecutive pairs of straightening beams of the same number as a plurality of consecutive pairs of said moving beams, and additional support bars in combination with said plurality of pairs of straightening beams. , a casting guide according to claim 14 mounted in a second common beam mounting frame identical to said first common beam mounting frame and removably attached to said guide frame. and straightening equipment. 20 Each of said straightening beams is connected to one of said support bars.
15. A casting guiding and straightening device according to claim 14, which is connected to only one.