EP0018350A1 - Dispositif de coulée continue, notamment pour la fabrication de brames - Google Patents

Dispositif de coulée continue, notamment pour la fabrication de brames Download PDF

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Publication number
EP0018350A1
EP0018350A1 EP19800890036 EP80890036A EP0018350A1 EP 0018350 A1 EP0018350 A1 EP 0018350A1 EP 19800890036 EP19800890036 EP 19800890036 EP 80890036 A EP80890036 A EP 80890036A EP 0018350 A1 EP0018350 A1 EP 0018350A1
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Prior art keywords
strand
frame
lever
crossbar
guide
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EP19800890036
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German (de)
English (en)
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EP0018350B1 (fr
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Max Burkhard
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1288—Walking bar members

Definitions

  • the invention relates to a continuous caster, in particular for producing slabs with a coolable continuous mold, a straight or curved strand guide for transporting, cooling and possibly deflecting the strand, which has a guide frame into which two mutually opposing rows of walking beams are installed which can be periodically adjusted against the strand by means of a drive device, can be moved by a predetermined transport step, can be lifted off the strand and can be returned to its starting position, the movement cycle of the walking bars belonging to one group being approximately one compared to the movement cycle of the walking bars belonging to another group half period is offset, and in the case of an arcuate strand guide with an adjoining straightening device with drivable straightening tools arranged in the frame for straightening the strand.
  • Every continuous sheet caster is the strand guide, in and with which the strand which essentially emerges from the mold is deflected and cooled.
  • Straight or arcuate strand guides with rollers arranged in a row on both sides of the strand are known.
  • Each row contains a significant number of rollers, which are not only mechanically but also thermally stressed, which is very high and unfavorably, and are therefore far less stable than might be expected. Since the strand shell is supported by each roller only along a very narrow area strip, adjacent rollers in each row must be as close as possible to one another.
  • the space available to accommodate the device for spraying cooling water is very narrow and is disadvantageously designed so that only one the central surface zone of the strand shell section between adjacent rolls can be effectively cooled, because the rolls themselves do not contribute to the cooling.
  • the strand shell is not supported in these sections, can therefore bulge and is often bent out and back as it passes through the rows of rollers, which adversely affects the structure of the solidified strand.
  • Blocks of very different cross-sectional formats are required by the processing industry.
  • the production of such blocks by cutting a strand to the desired cross section means converting an existing continuous casting plant to this cross section.
  • the company has started to cut the blocks out of slabs, which should be as wide as possible for economic reasons, but whose broad sides must be flat and parallel.
  • blocks formed from a longitudinally divided, 2700 mm wide slab can no longer be properly rolled out if they are about 1.5 mm thicker on one of their narrow sides than on the other.
  • the slab width that can be achieved purely by casting technology cannot currently be used, because the curvature of the broad slab sides is determined by the deflection of the rolls in the case of strand guides equipped with rolls.
  • the slab widths that can be used are governed by the permissible deflections of the rolls, the rule of thumb being that the roll diameters must change in the same ratio as the slab widths. This results in the currently valid limit for the slab widths, beyond which the rollers become too heavy and the distances between the support points of the strand shell are too great. While it has been suggested not only to support or divide the rollers at their ends but also between them, these measures have not proven successful.
  • Continuous-arch casting systems have also been proposed and built, the strand support of which is equipped with walking beams arranged on both sides of the strand.
  • These walking beams are designed as longitudinal beams curved in accordance with the shape of the continuous arch, with two broad groups of such beams opposing each broad continuous surface and between two adjacent beams of one group and one of the other associated beams.
  • Each bar group can be adjusted against the strand, can be moved in the longitudinal direction in the engaged state, can be lifted off the strand and can be returned to the starting position in the raised state, and the movement sequences of the two longitudinal bar groups are shifted in phase by essentially half a period.
  • the support of the strand and its cooling are improved because the coolable longitudinal beams lie flat against the strand shell, but the weight and, in particular, the masses to be moved are large in the case of strand supports for wide slabs.
  • the individual longitudinal beams do not extend over the entire length of the strand arch, which can be 15 m or more, for example, in the case of strands of large cross section, but are divided in the longitudinal direction, so that the entire strand guide is made up of several adjoining sections.
  • the reduction in the total mass to be moved and its distribution that can be achieved in this way cannot contribute to reducing the difficulties associated with the drive, which are due to the need to arrange the drive elements necessary for each beam above or below the strand and to expose its heat radiation.
  • the entire drive arrangement is therefore difficult to monitor, inaccessible and subject to high temperatures during operation, which is why relatively minor defects can only be remedied after the system has been switched off and cooled down. moreover is the off and on building middle walking beams between the two outermost ones and subject to greater wear is a difficult and time-consuming task.
  • the practically usable frequencies of the beam movement are restricted upwards.
  • the aim of the invention is a continuous caster with a strand guide, which allows the casting of slabs with a width which is considerably greater than the usual, which is lighter overall than the known one and in which the mass to be moved is broken down into a large number of comparatively small masses.
  • each crossbeam is connected to the one end of at least one plunger and is supported via the plunger or plungers against the guide frame, the plungers can be driven for starting and lifting as well as for the transport and return movement of the crossbeam and preferably also the tools of the Straightening device designed as a crossbar supported with stamps against the scaffold or a device frame and can be set against or lifted off from the strand with the aid of the stamps.
  • the weight of the strand guides of continuous casting plants according to the invention is considerably less than the weight of comparable walking beam guides with longitudinal bars, the weight saving becoming noticeable with slab widths of approximately 200 cm and increasing considerably and progressively with increasing slab width.
  • the drive devices and their elements can be laid on both sides, and can be designed to be simple and reliable, they are outside the range of high temperatures and are manageable in their entirety.
  • the crossbeams can be relatively narrow and can be arranged at intervals which readily allow the installation of devices for effectively cooling the strand with sprayed-on coolant, and the division into a large number of low-mass parts makes it possible to significantly reduce the sequence frequency of the movement cycles compared to the hitherto usual ones to increase.
  • the strand usually enters the strand guide at a temperature of at least 1000 ° C and out of it at a temperature of 500 ° C. All crossbeams rest against the strand along a surface strip, within which the temperature drop in the longitudinal direction of the strand is small, e.g. is 0.3 ° C / cm. So there is no danger that the crossbeams will warp as a result of temperature differences.
  • crossbeams of a pair of crossbeams or a plurality of successive crossbeam pairs of the strand guide and / or the straightening device together with the stamps in a common frame and to connect them to a unit which can be detachably fastened to the guide frame, preferably all, the same number of units containing crossbar pairs are identical to one another.
  • the installation and removal or replacement of crossbars is then particularly simple and can be done from the side.
  • Each crossbar can be supported with two or more, but most simply by means of a single plunger, which advantageously extends essentially over the entire length of the bar.
  • crossbeam that initially lies on the mold can be driven individually; it may even be advisable to drive all crossbars individually.
  • How far it is possible to jointly drive a number of consecutive crossbeams to simplify the routing of the joint depends on the respective conditions, e.g. on the metal to be cast and the cross-section of the strand, in particular combining two adjacent or three successive ones to form a drive group, in which one crossbar is driven directly and with it the others are coupled to drive movement.
  • a combination is recommended in which the crossbar, which is the mold first, and a number of the bars following it individually and from the remaining crossbars several, successive, for example two or three, can be driven together.
  • the solidified strand shell is still thin in the vicinity of the mold and can be expanded under the influence of the ferrostatic pressure.
  • the strand is always supported over a crossbar width at points spaced apart from one another by a little more than a crossbar width and can bulge between the relatively dense support points.
  • the because of the ge wrestle length of the unsupported point in itself and bulges that are not very significant and that develop relatively slowly can, however, be intercepted if the crossbeams are moved with correspondingly high repetition frequencies, so that the strand shell is only slightly bent back and forth, which is very desirable.
  • the forces to be exerted or absorbed by the crossbeams can be generated or absorbed, for example, with hydraulic cylinders which can be moved back and forth along the strand guide. It is more advantageous, however, to design all the stamps supporting a crossbar as levers, one end of which is attached to the crossbar, preferably articulated, and the other ends of which are pivotally connected to the guide frame or the frame, because the crossbar is then more flexible and conforms to the shape of the Can adjust strand area automatically.
  • the pivot point of the lever or the lever of at least one crossbeam of some, but preferably all, of the crossbeam pairs is arranged on a bolt loaded with a force and displaceable against this force, in particular on the piston rod of a hydraulic cylinder or the like.
  • This variant allows the compressive forces acting on the strand to be limited at the top because the crossbeam can deflect.
  • the bolt can be adjustably fastened to the guide frame or the frame so that it is possible to adjust all the beams individually and relative to one another and to adapt the course of the arc determined by the strand guide precisely and conveniently to a predetermined desired shape.
  • This target shape is not definitively determined once and for all, but is entirely changeable, it being possible, in particular and also subsequently, to set the arch shape which has been found to be best suited to the entire production process.
  • crossbeams are largely independent of the desired arch shape, that is to say, for example, for circular arc guides
  • Crossbeams can also be easily installed in wicker arch guides and vice versa, which is not permitted with longitudinal walking beams, because they must be precisely adapted to the strand curvature and, moreover, require a curvature that cannot be changed in the longitudinal direction of the strand.
  • the one or more crossbar supporting levers are designed as toggle levers and both lever arms of at least one toggle lever can be driven, the toggle lever arm on the beam side near the articulation point on the crossbars, the other toggle arm each having a link guide in the vicinity of the knee joint and in each link slot the pin engages a stationary, drivable crank.
  • lever (s) supporting a crossbar as a pivot lever and to drive at least one pivot lever for a reciprocating movement, e.g. to be provided with a link guide for the pin of a stationary, drivable crank, the end of the pivoting lever remote from the strand being movable against and away from the strand preferably by means of a pressure medium cylinder.
  • the cooling of the strand is straightforward in the continuous casting plants according to the invention, because the crossbars lying flat against the strand bring about extensive heat removal if they themselves are adequately cooled.
  • the end of all the levers supporting a crossbeam can be connected to a cylinder, in particular a hollow cylinder or a pan, and a pan or a cylinder, in particular a hollow cylinder that contacts the surface of the crossbar, and, for example, one in the hollow cylinder that can be cooled on the inside Device for spraying coolant on the cylinder wall.
  • Such cooling devices effect not only sufficient cooling of the crossbeam, but also of the socket joint connection with the lever and the latter.
  • Crossbars have proven to be very effective, which have a number of cells separated by web walls, which are open on their front side facing the strand and open on the rear side, or on their rear side each with a rear wall which is provided with a passage opening, whereby nozzles for spraying the strand surface through the cells are attached to the rear of the bar.
  • the crossbeam touching the strand is immobile in relation to it, so there is no sliding friction and forces originating from it and which stress the solidified strand jacket.
  • the strand guide contains many elements which follow one another at relatively short intervals and are provided with contact surfaces, namely the crossbars.
  • a proper adaptation between crossbars and strand links makes it possible to arrive at cold strands which are satisfactory in every respect and consist of relatively few hinged links and are therefore relatively short, light and therefore easy to manipulate.
  • the links are designed as cross bars approximately the same width as the cross bars; the cross bars each have a section provided with a longitudinal profile at one end or both, and an extension is formed on one side or on both of the strand guides, which interacts with a rod section and is provided with a profile complementary to its profile.
  • strand guides with an arc radius of approximately 10 m, such a cold strand need not be longer than 2 to 3 m and can be handled very easily by means of the overhead crane.
  • FIGS. 1 a and 1 b show an arc continuous casting installation according to the invention in a longitudinal section
  • FIG. 2 shows a frame
  • FIG. 3 shows a section along line III-III of FIG. 2
  • FIG. 4 shows a toggle lever drive in four phases of movement
  • Fig. 5 a group of three jointly drivable toggle levers
  • Fig. 6 a swivel lever including drive
  • Fig. 7 a variant of a swivel lever
  • Fig. 8 graphically
  • the continuous sheet caster shown in FIGS. 1 a and 1 b has a coolable continuous mold 1 which is fastened to a horizontal support 2 connected to stands 3.
  • a cooling section 4 is arranged below the mold, in which the extruded strand 5 is guided along bars which cross each other in a lattice-like manner and contains the spray devices (not shown), for example nozzles or nozzle pipes, for spraying a cooling liquid through the windows onto the strand surface.
  • the cooling section is followed by a strand guide, to which a number of transverse beams supported against an arcuate guide frame 6 belong and which is intended to deflect the strand leaving the cooling section 4 in a substantially vertical direction along an arc in the horizontal direction.
  • the crossbars are in an upper row opposite that of the upper, concave of the two curved strand surfaces stands, and arranged in a lower row, which is on the side of the lower, convex strand surface. All crossbars are assigned to one another to the extent that each bar 7 in the upper row is opposite a bar 8 in the lower row.
  • the individual pairs of crossbeams are each housed in a frame 9 (FIGS. 2 and 3) and each beam 7,8 is connected to a single stamp which extends over all or a substantial part of its length, which acts as a toggle lever 70 or 80 is formed.
  • the use of a single stamp is not mandatory, but in most cases it is much simpler than the possible support with two or more stamps.
  • the crossbar 7 or 8 is articulated to the free end of the toggle arm 71 or 81 on the strand side, whereas the free end of the other toggle arm 72 or 82 is articulated to a cross member 90, 92 of the frame.
  • the frame are placed on the arcuate guide frame 6 and detachably fastened to it by means of screw bolts or the like, so that they can be individually assembled or replaced, and simply, from the side, without any special work and without the aid of devices other than those already available Cranes of the plant.
  • a simple advantage is the simple and weight-saving construction.
  • the guide frame can be constructed from simple arch supports and is not loaded with any forces other than the weight of the units consisting of frame, beam and their drive levers and the weight of the strand, whereas all the forces required for the strand transport or their reactions from the frame frame 9 be included. These are essentially tensile forces to be absorbed by the longitudinal frame members.
  • the frame 9 consists of two longitudinal spars 91 which are connected at their upper ends to the cross spar 90 and at their other ends to the cross spar 92 which also connects to the frame screw-on footplates is provided.
  • Each of the two crossbeams 7 and 8 is articulated to the adjacent toggle lever arm 71 and 81 by means of a socket joint, which consists of a circular cylindrical socket 73 and 83 formed on the beam and extending over its entire length, and from a hollow cylinder 74 that contacts the surface thereof or 84, who sits at the free arm end.
  • a nozzle tube can be arranged inside the hollow cylinder, with which cooling liquid can be sprayed against the side of the cylinder inner wall opposite the pan.
  • FIGS. 8 and 9 Another embodiment of a crossbar is shown in FIGS. 8 and 9.
  • This crossbar 100 has a number of cells 101 with axes normal to the string broadside. The cells are laterally delimited by web walls 102 and separated from one another. In any case, the cells are open on their front surface facing the strand, they are open on the back (FIG. 8) or partially covered by a rear wall 103 (FIG. 9).
  • This rear wall is provided with a passage opening 104 in the area of each cell. Each rear cell opening or passage opening is juxtaposed with a nozzle 105, from which cooling liquid can be sprayed through the cell onto the strand surface.
  • the nozzles are connected to the crossbar and are located, for example, on feed pipes that extend between two end walls 106 of the beam. With such crossbeams a completely sufficient support and at the same time a very effective cooling of the strand can be achieved.
  • the toggle levers 70, 80 and, accordingly, their arms 71, 72 and 81, 82 connected via a joint 77 or 87, for example a pin joint, can be designed as hollow girders which extend over the entire length of the crossbars 7 and 8 and are stiffened with transverse walls and are pivotally attached with their outer ends.
  • the lower toggle lever arm 82 of the lower toggle lever can be rotated about pivot bearing 64 which is stationary relative to the cross member 92 of the frame, whereas the pivot points of the arm 72 of the other toggle lever on the cross member 90 of the frame are adjustable in the normal direction to the strand.
  • a hydraulic cylinder 93 is placed on the crossbar near its two ends, the piston rods of the two cylinders are connected to a crossbar and this is pivotally connected to the end of the toggle arm 72.
  • the upper toggle lever 70 is therefore not connected to the frame at a position which is immovable relative to it, but the pivoting point of its arm 72 can be shifted normally to the strand also during the operation of the system, specifically against the force exerted by the hydraulic cylinder and thus adjustable.
  • the lower toggle lever 80 or its arm 82 can also be connected to the frame via hydraulic cylinders 93.
  • the task of deflecting and transporting the strand by means of the strand guide which incidentally is less about pulling out the strand than braking it, requires an orderly transport movement of the crossbeams.
  • the strand must always be held so that the movement determined by crossbeams can be impressed on it.
  • the crossbar pairs are kinematically combined into groups and the movement sequences of the bars In such a group, the bars of another group are offset by practically half a period, ie the bars of one group are positioned against the strand and are moved a certain distance to transport them, while at the same time the bars of the other group are lifted off and be returned to their starting position.
  • the crossbars can be driven individually and combined in such a way that each bar, with the exception of the end bars of one group, lies between two bars of the other group.
  • the invention also allows a combination of these possibilities.
  • the strand shell In the vicinity of the mold, the strand shell is thin and may therefore only be unsupported for relatively short distances, but at the end of the strand guide it is already thick enough to withstand the ferrostatic pressure even over longer distances.
  • a number of individually drivable crossbeam pairs are therefore preferably arranged near the mold, whereas subgroups of e.g. Connect two or more pairs of crossbeams that can be driven together.
  • FIG. 4 shows the four phases a, b, c, d of the movement sequence.
  • FIG. 4 shows the four phases a, b, c, d of the movement sequence.
  • cranks 78 'and 79' protrude which can be driven in the same direction, counterclockwise in Fig. 4, and against each other by a predetermined phase angle of about 90 are offset.
  • the positions which the cranks 78 ', 79' assume at the beginning of the movement phases a to d are entered in the four figures.
  • the crossbar 7 is placed against the strand which is transported in the course of this phase by the distance indicated by the arrow s.
  • phase b the lifting of the crossbar begins, which ends at the end of the phase, whereupon the return movement of the lifted bar (arrow h) begins, which lasts until the end of phase c.
  • phase d the bar is switched on again.
  • the path covered within each phase and the previous four phases is illustrated and simplified, namely in the form of a square or its sides.
  • Fig. 4 the guideways of the link guides are drawn as straight elongated holes. In practice, it may be advisable to use curved guideways to coordinate the lifting and transporting movements of the crossbeam more precisely.
  • the motor drive power required for each pair of bars can be comparatively small, because the toggle lever mechanism ensures sufficiently large contact forces between the bars and the strand. It is therefore advisable to drive the pairs of beams or the coupled pairs of beams individually, because the motors, gears and all others Components involved in the power transmission are light enough to allow them to be attached to the sides of the guide frame or longitudinal spars of the frame, for which purpose only support brackets are attached, but no changes to the frame concept are necessary.
  • drive motors because compressed air and hydraulic fluid are practically always available, pneumatic or hydraulic flow machines are definitely possible, but above all electric motors, the reliable synchronization of which does not pose any problems.
  • crank of a toggle lever drive located near the knee joint can be driven by the other crank with its own motor M 2 (FIG. 3, top) or by means of, for example, a chain drive (FIG. 3, bottom).
  • the movement of the crossbeams can basically be broken down into a transport movement and a positioning movement in various ways. This is very easily done with stamps of the type shown in FIGS. 6 and 7.
  • the stamp is designed as a simple lever 111, at one end of which the crossbar 7 is fastened, for example articulated, and the other end of which is articulated to the piston rod 113 of a pneumatic or hydraulic drive 112.
  • the actuator is double-acting.
  • the two compartments 114, 115 into which the cylinder space of the drive unit is divided by its piston, the one 114 114, which is further away from the lever 111, is continuously connected to a compressed air source, for example a container containing air under a predetermined pressure.
  • the piston is therefore continuously loaded in the direction against the strand, which depends on the piston surface and the pressure of the compressed air and is therefore adjustable by changing this pressure.
  • the other cylinder compartment, 115 is optional as can be connected to or separated from a pressure source, such as a container which contains gaseous or preferably liquid pressure medium under higher pressure. If the compartment 115 is depressurized, the crossbar is set against the strand with the force which corresponds to the load on the piston with the compressed air contained in the compartment 114. If pressure medium is let into the compartment 115, the piston is lifted against the contact force due to the higher pressure prevailing in this compartment. This adjustment stroke can be done by means of stops. be limited. In this way, the crossbar is impressed on its movement.
  • the transport movement of the crossbar can be produced with a drive in the manner of an oscillating crank loop.
  • the lever 111 then has a slot 116 which is parallel to the piston rod 113 and into which projects a pin which projects from a stationary crank 117.
  • the crank is advantageously arranged in the vicinity of the beam 7.
  • the transport movement according to stroke and frequency is determined by the crank or its speed.
  • the times during which the compartment 115 is connected to the associated container must be coordinated with the crank rotation, as need be discussed in more detail. It goes without saying that instead of one cylinder, two can be provided, in each of which one of two pistons seated on a common piston rod is accommodated.
  • the adjusting movement does not necessarily have to be derived by means of a pneumatic or hydropneumatic device; for this purpose, a nut 118 which can be moved in a non-rotatable and non-rotatable manner can also be articulatedly connected to the outer end of the lever, into which a non-displaceably mounted spindle 119 is screwed.
  • the spindle can be driven by a motor 121 via a gear 120.
  • the cylinders can be assembled and advantageously be adjustably attached to the frame of the strand guide or to the frame in the normal direction to the strand surfaces to be supported, so that an adaptation to different strand thicknesses is very easily possible.
  • strand guides designed according to the invention which do not contain large contiguous masses allow the transport movement of the strand to be divided into many small and rapidly successive steps, e.g. in thirty steps / min or more.
  • the times during which the solidified strand shell is unsupported in sections are then only a few seconds and during these short periods of time there is only a very limited bulging, which is known to be relatively slow.
  • the flexing of the strand shell which is detrimental to the formation of the desired strand structure, is therefore reduced to an insignificant degree.
  • the frame 6 of the strand guide can also be designed in a simple manner, especially if it is intended for mounting frame frames.
  • the guide frame can have a number of continuous, essentially arc-shaped longitudinal beams, for example box girders, with upper straps or upper sides curved in accordance with the shape of the strand.
  • These longitudinal beams are immovable approximately in the middle against a foundation, and are movable with both ends, advantageously vertically movable in the vicinity of their mold-side end, for example against a surface of a stand 3 and horizontally movable near their other end against the foundation or a support block.
  • frame frames can be attached and, for example, be detachably fastened to the beam sections by means of screws.
  • the adaptation to the arch shapes need not be strict.
  • the frame or units assembled with them can be installed from the side and therefore do not need to be raised significantly above their installation height.
  • guide frames 6 and the crossbars 7, 8, which are arranged in this way can also be viewed from below due to the lateral arrangement of the drive devices.
  • the firm support of the arch support from below approximately in the middle between the movable supports of the arch ends guarantees a kink-free load even during operation, because the effects of the temperature-related changes in length come into play at largely uninfluenced places.
  • a cold or start-up strand is an essential accessory of every continuous caster.
  • the inventive design of the walking beam holding and transporting the walking beam as a successive crossbar in the longitudinal direction of the strand allows the strand to be supported at many and relatively close to one another, because the crossbars can be relatively narrow and closely adjacent.
  • the center planes of adjacent crossbeams can project from each other by 4 dm and the adjacent lower beam edges from each other by about 1 dm.
  • the start-up line can therefore be relatively short and smooth, and relatively light, so that it can be easily manipulated.
  • Fig. La the space requirement is small.
  • An example consisting of eleven links 132 Cold strand 131 can be carried by a bogie 133, which is not necessarily but advantageously attached to the top of the horizontal beam 2 or between the longitudinal beams of this beam construction and can be moved along the same.
  • the cold strand lies on an endless chain or the like, 134, which can be driven by the same motor 135 as the chassis or by its own motor.
  • FIG. 10 shows, in a representation corresponding to FIG. 2, two cross bars 7, 8 which can be driven with toggle levers, between which there is a link 132 of a cold strand.
  • the links are designed as cross bars with a middle section corresponding to the length of the cross bars 7, 8, the cross section of which practically corresponds to the cross section of the strand to be produced.
  • a lateral rod section 136 adjoins this central one on both sides and is provided with a longitudinal profile, for example with one or more longitudinal ribs.
  • These longitudinal profiles are complementary to the longitudinal profiles of two lugs 137, 138 arranged on one side of the crossbars 7, 8.
  • the interlocking profiles of the rod sections or lugs which can be arranged, for example, on the correspondingly wide toggle arms 71, 81, are secured the cold strand to prevent it from sliding sideways out of the space between the opposing rows of crossbars.
  • a straightening device (FIG. 1b), the tools of which are also designed as crossbeams and are therefore designated as 7,8.
  • These crossbeams face each other in pairs, can be set against the strand 5, can be moved back and forth in the longitudinal direction of the strand and are supported against a frame with stamps.
  • stamps It is advantageous to use these stamps as toggle levers 71, 72; 81, 82 form and arrange each pair of bars in a frame.
  • the toggle lever drive allows the required straightening forces to be applied without difficulty, the larger ones can be as the supporting forces for the curved strand section, because the strand is in any case already largely solidified in the area of the straightening device.
  • the tools of the straightening device and their drives which do not need to differ from those already described, can, if necessary, be dimensioned or designed to be stronger.
  • Cooling the strand which is a problem that cannot be solved satisfactorily in the case of roller guides provided with rollers, is a difficult task.
  • the heat is extracted extensively and therefore gently, but it is not possible to change the cooling in the longitudinal direction of the strand.
  • strand guides according to the invention which allows different cooling of successive crossbars or crossbar groups without particular difficulties. This is why the continuous casting process can also be used for steels in which it has so far not been considered due to its composition's sensitivity to inadequate heat extraction.
  • the strand can be cooled uniformly at any point in a manageable manner, at least by means of e.g. cooled crossbeams, wherein, if necessary, cooling with the aid of sprayed-on cooling liquid can also occur, in particular in the entrance area of the continuous sheet.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP19800890036 1979-04-20 1980-03-20 Dispositif de coulée continue, notamment pour la fabrication de brames Expired EP0018350B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3000/79 1979-04-20
AT300079A AT360691B (de) 1979-04-20 1979-04-20 Stranggiessanlage, insbesondere zum herstellen von brammen

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Publication Number Publication Date
EP0018350A1 true EP0018350A1 (fr) 1980-10-29
EP0018350B1 EP0018350B1 (fr) 1983-07-27

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EP19800890036 Expired EP0018350B1 (fr) 1979-04-20 1980-03-20 Dispositif de coulée continue, notamment pour la fabrication de brames

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EP (1) EP0018350B1 (fr)
JP (1) JPS55141368A (fr)
AT (1) AT360691B (fr)
CA (1) CA1150476A (fr)
DE (1) DE3064359D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534166A1 (fr) * 1982-10-08 1984-04-13 Clecim Sa Installation de coulee continue de l'acier

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN113083906B (zh) * 2021-02-22 2022-06-14 阳春新钢铁有限责任公司 一种减少螺纹钢检废的生产控制方法

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DE1608352B (de) * Uralskij sawod tjaschelogo maschinostrojenija imeni S. Ordschonikidse, Swerdlowsk (Sowjetunion) Vorrichtung zur Führung eines Hubbalkensystems als Ausziehvorrichtung für eine Bogenstranggießanlage
DE2046645B2 (de) * 1970-09-16 1971-09-16 Mannesmann AG, 4000 Dusseldorf Vorrichtung zum fuehren und stuetzen von in fluessigkeitsge kuehlten kokillen erzeugten straengen
DE2017976A1 (en) * 1970-04-15 1971-10-28 Schloemann AG, 4000 Düsseldorf Cooling plates for continuous casting plant
AT320886B (de) * 1971-02-15 1975-03-10 Tsnii Chernoj Metallurg Vorrichtung zum Abziehen des Stranges für Metallstranggießvorrichtungen

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Publication number Priority date Publication date Assignee Title
DE1608352B (de) * Uralskij sawod tjaschelogo maschinostrojenija imeni S. Ordschonikidse, Swerdlowsk (Sowjetunion) Vorrichtung zur Führung eines Hubbalkensystems als Ausziehvorrichtung für eine Bogenstranggießanlage
DE2017976A1 (en) * 1970-04-15 1971-10-28 Schloemann AG, 4000 Düsseldorf Cooling plates for continuous casting plant
DE2046645B2 (de) * 1970-09-16 1971-09-16 Mannesmann AG, 4000 Dusseldorf Vorrichtung zum fuehren und stuetzen von in fluessigkeitsge kuehlten kokillen erzeugten straengen
AT320886B (de) * 1971-02-15 1975-03-10 Tsnii Chernoj Metallurg Vorrichtung zum Abziehen des Stranges für Metallstranggießvorrichtungen

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FR2534166A1 (fr) * 1982-10-08 1984-04-13 Clecim Sa Installation de coulee continue de l'acier
EP0107563A1 (fr) * 1982-10-08 1984-05-02 Clecim Installation de coulée continue de l'acier

Also Published As

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JPS644869B2 (fr) 1989-01-27
JPS55141368A (en) 1980-11-05
EP0018350B1 (fr) 1983-07-27
CA1150476A (fr) 1983-07-26
AT360691B (de) 1981-01-26
ATA300079A (de) 1980-06-15
DE3064359D1 (en) 1983-09-01

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