DE1213964B - Continuous caster for the continuous casting of strands with different cross-sections - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

B22d

German KL: 31c-21

Number: 1213 964

File number: M 47104 VI a / 31 c

Filing date: November 14, 1960

Opening day: April 7, 1966

Continuous casting plants for the continuous casting of individual as well as for the casting of a plurality of Strands are known per se. So far, strands are mostly cast in such systems, which in In terms of their cross-sectional shapes and weights per meter do not differ too much. Of course, square and round formats also differ to a certain extent Dimensions and possibly also at the same time and also in size corresponding slabs can shed. Overall, however, such systems were always limited to a certain size or size. Format ranges limited. In addition to the overall height of the system, the with continuous casting must be placed on the sump section of the largest strand cross-section, the facilities of the plant that determine the casting process, such as the type of metal supply, the training of the distributor, the equipment of the transport rollers, the possibilities of the cooling and lowering mechanism and the separation and discharge device.

Even today, large and heavy castings are almost without exception in so-called lowering devices produced by a discontinuous process.

For a long time there has been a desire for continuous casters, especially multi-strand casters, The casting of strands in the widest possible format and weight per meter range allow, so that such a desired embodiment of the invention is based as an object.

The invention is based on known horizontal or vertical. Vertical multi-line systems, their individual Elements such as the trough with the spouts, molds, lowering, cutting and Catching devices, are arranged in mirror image. To achieve the aim of the invention, Such systems must be designed in such a way that only by replacing two, essentially square molds by a single slab-shaped rectangular mold one over the longitudinal center axis extending strand - using the devices previously operating separately - can produce.

The continuous casting plant according to the invention is thus characterized in that the various devices are designed both individually for casting strands on both sides of the longitudinal center plane and combined in pairs for casting strands extending over the longitudinal center plane. Particularly characteristic of a continuous casting plant according to the invention is a distributor which, in a known manner, is a continuous casting plant for continuous casting
of strands with different cross-sections

Applicant:

Mannesmann Aktiengesellschaft,

Düsseldorf, Mannesmannufer 1 b

Named as inventor:
Dr.-Ing. Karl Georg Speith,
Dr.-Ing. Adolf Bungeroth, Duisburg;
Wilhelm Stellmacher, Düsseldorf;
Hans Schrewe, Duisburg

is lined with refractory material and the vertical longitudinal center plane of the system with two same skins overlap and in both parts has the same number of identical spouts and is characterized in that the spouts combined in pairs both individually and opposite one another or lying next to one another are controllable.

The lifting tables as such and also with the most varied of movement devices, such as crank Or eccentric gears and / or spring suspensions or the like. Equipped, known, have for The mold is no longer accommodated as a closed tabletop, as was previously the case. Rather, they show a U-shaped recessed shape, the two belonging together in the sense of the system according to the invention Tables with the il-shaped opening face each other.

This arrangement and training opens up the possibility of using the lifting tables both (for two-strand casting of small to medium-sized strands on both sides of the longitudinal center plane) individually with molds occupy as well as on both tables when coupled together (for single-strand casting, large Formats that span the longitudinal center plane, for example slabs) one that spans both tables and to arrange mold jointly carried by them. In doing so, the out of the allowed in both Tables arranged U-shaped recess formed (approximately oval) opening the cast Strand the passage down. It goes without saying that both tables can be used individually as well must be drivable together, the synchronous drive in the case of cooperation a special attention is to be paid.

609 557/261

3 4

The variety of the ken according to the invention then the two half-shells, a closed

Plant castable formats and dimensions can form a quiver (e.g. for slabs), together,

a determination of the cooling equipment as well as you are specially equipped for this,

of the support roller arrangements that may be used

gene does not increase below the mold. You must therefore 5 z. B. a slab with about 3 t / m weight, which at

still from case to case the size and that of a separated strand length of 5 m after all

Format of the cast product can be adapted. has a considerable weight of around 15 t,

Overhung transport rollers are also known in the most varied of embodiments and with the known braking devices in which cannot easily fall into the quiver. Even in the system according to the invention such high weights cannot be avoided in the long run, in order to take into account the wide-span casting area, the discharge device for the overhung transport system according to the invention required a redesign, to be able to carry it,
rolls provided and the sense of the invention ent- The bottom of the single quiver (so each arranged accordingly. So are in the system shell) is always formed by an upper end of a hydraunach the invention transport roller pairs 15 lischen stamps, which are below the semi-axis opposite each other. They are both arranged so that they can be sunk into the shell and are approximately in the same direction as one another and in terms of the same length as the quiver itself. Distance between each other adjustable. The hydraulic rams are - if necessary

When casting single strands on both sides, also with two-strand casting - the one to be lowered

Longitudinal center plane, the strands are known in ao strand as soon as the severing cut has begun

Way captured by the rollers and moved. Approaching the casting and catching the strand

As described above, both lift tables are removed after separation. Is produced in a single

drive the longitudinal center plane to accommodate a large, so both punches are out of the

overarching mold summarized, for example, two half-shells formed quiver the strand,

wise to cast a slab, for example, the slab is approached analogously,

The slab also bears on the associated transport roller pairs

Format of this cast strand set, namely so, with full weight on the floor or on the

that a pair of transport rollers on each of the two narrow stamps, which are based on the principle of liquid

attacks len ends of the slab and work together dampening, so that a controlled

Causes transport and hold of the cast strand. To lower the castings takes place,

the individual transport rollers carry the heavy castings out for this purpose

on its side facing the center plane, the corresponding half-shell is inclined until the casting

Luckily, no bunches, edges or the like ζ. B. the slab, folded completely into the horizontal

Even the cutting devices, which is also in. Then the cast strand with the help of a Zugeiner whole series of embodiments known 35 hooks or otherwise on the corresponding roll and have been applied, have followed the basic course.

ideas of the invention arranged accordingly In the drawing, an embodiment is on

and set up in such a way that they are shown schematically in two-line, eight-line or four-line systems.

as well as for the combined single-strand casting,

can be set. 40 Fig. 1 shows the system as a whole in a longitudinal

So they are also to be cut in the same mirror image while

arranged on both sides of the central plane and can- F i g. 2 to 6, the individual devices are used individually (in two-strand casting) as well as in common order along the longitudinal center plane AB of the ansam (in single-strand casting). show location in plan view.
For safety reasons, it is recommended that 45 of the raised ladle 2 reaches each of the cutting devices to be construed as molten material first in the Verim emergency also means alone the separation divider 4, according to the invention, the longitudinal center plane cut on a large-sized strand example - AB overlaps with two identical halves (see Fig. 2). wise of a slab. In Sen both sections are the same number

Finally, the arrangement and 50 mirror-inverted, identical spouts 6 are also subject to the arrangement of the strand discharge device of the Grund- net. In two-strand casting, ie in the case of the dark conception of the invention. Quiver-like discharge position when casting eight strands, four of both devices, into which the cut strand on the side of the longitudinal center plane AB, all eight are dropped, with the fall by means of a corresponding spout used and each controlled individually,
the braking device mitigated or caught 55 When single-strand casting, ie in the case of the illustration, are also known as simple Kippvorrich- when casting four the longitudinal center plane overlapping that can be turned sideways and the strands, z. B. slabs, two off-strand sections are placed on a roller table. casts α and b combined and

The controls provided in the system according to the invention.

The strand discharge device consists of two molds arranged in rows 8 (see Fig. 3). Also, each of which can be folded down to the outside. In the case of two-strand casting - that is, two-strand casting on both sides, that is, when casting strands with a small longitudinal center plane AB - each of the two tables 8 to medium dimensions on both sides of the longitudinal center is filled with a single mold 10. For the one level, in which the lifting tables, transport rollers 65 continuous casting, two lifting tables c and d miteinpaires etc. are used individually, they are also coupled to one another and with a large (slab) that spans the longitudinal center plane over the discharge device only in its individual units AB. Mold 12 required. In the case of single-strand casting of large units, we are occupied. The U-shaped recess allows both

in two-strand casting as well as in single-strand casting, the passage formed in each case downwards, which then passes into the transport rollers 14 (see FIG. 4). In two-strand casting, the two transport rollers e and /, g and h are each brought into engagement on one side of the longitudinal center plane AB. The distances between them can be adjusted as required. In single-strand casting, the rollers work together in pairs, that is to say, when casting a slab spanning the longitudinal center plane AB , the pair of rollers ef will attack on one side of the slab and the pair of rollers gh on the other side of the slab. For this purpose, the pairs of rollers ef and gh can also be adjusted relative to one another.

The cutting torches 16, which are arranged for severing corresponding strand sections, on both sides of the longitudinal center plane AB are also provided in a mirror-inverted manner (see FIG. 5). During the cutting process, they are moved towards the longitudinal center plane and separate the respective strand during two-strand casting. When single-strand casting, z. B. a large slab 18, both burners 16 should cut off the strand 18 from both sides on the longitudinal center plane AB. For safety reasons, it is advisable to set up each of the two burners 16, which are also coupled in a known manner to the downward moving strand, so that it can cover the entire width of the slab so that the casting does not have to be interrupted in the event of a burner failure .

The separated strands then pass into the strand discharge device, which consists of a quiver 20 formed from the two half-shells i and /, which face one another with their openings on both sides of the longitudinal center plane AB (see FIG. 6). Each of the two half-shells i and j , which form a quiver, can be folded out on its own. Its bottom is formed by the upper end of a hydraulic ram 22 which is arranged so that it can be lowered below the half-shells. In the case of two-strand casting, these punches are moved towards the respective strand in order to support the separated pieces and to bring them down to the hut floor or roller table level in a decelerating manner. In this operation, the stamps are controlled according to the principle of liquid damping. As soon as the end position is reached, the half-shells with the strand sections are turned over to the outside so that they reach the roller table 24.

If a large strand, e.g. B. a slab that overlaps the longitudinal center plane AB , the strand both punches 22 are driven in the same direction and bring it, lowering together, to the roller table height. Then, in order to cause the strand to be folded over (for example to the right), the half-shell / is lowered to roller table height and the strand section is folded over by known means and brought onto the roller table.

Claims (7)

Patent claims: 1. Continuous caster, in particular multi-strand caster for the continuous casting of strands with different cross-sectional formats and weights per meter, whose devices, which essentially determine the casting process, such as distributors, lifting tables, transport rollers, strand separating and discharge devices, are arranged opposite one another on both sides of a vertical longitudinal center plane of the system, as a result characterized in that they are designed both individually for casting strands on both sides of the longitudinal center plane (AB) and combined in pairs for casting strands extending over the longitudinal center plane (AB). 2. Manifold for a continuous caster according to claim 1, which in a known manner with refractory Material is lined and the vertical longitudinal center plane of the system with two equal Overlaps halves and has the same number of identical spouts in both parts, characterized in that the spouts (6) both individually and opposite one another or are grouped together in pairs next to each other controllable. 3. Lifting tables for a continuous caster according to Claims 1 and 2, characterized in that that they have a substantially U-shaped recess, the openings of which to the longitudinal center plane are directed towards the system, whereby the lifting tables are otherwise designed in such a way that that they are coupled together and opposite one another both individually and in pairs can be driven together. 4. Overhung transport rollers for a continuous caster according to claims 1 to 3, characterized in that the transport rollers (14) both individually in relation to one another as well as mutually opposite and mutually adjustable in pairs are drivable. 5. strand cutting device for a continuous caster according to claims 1 to 4, which is known in Way from coupled with the strand lowering movement and movable transversely to the strand axis Cutting torches (16), characterized in that the cutting torch both individually on both sides of the longitudinal center plane of the system and in pairs opposite one another are movable against each other. 6. Strand discharge device for a continuous caster according to claims 1 to 5, which has a known quiver shape (20), characterized in that the quiver is formed from two half-shells (i and /), the openings of which are directed towards the longitudinal center plane, wherein each of the two half-shells can be folded down on its own to the outside. 7. strand discharge device according to claim 6, characterized in that the bottom of each Half-shell through the head piece of a hydraulically operated retractable below the quiver and at the same time also a pressure ram that works according to the principle of liquid damping is formed, which can be controlled both individually and jointly. Documents considered:
German Patent Nos. 862486, 909 142;
U.S. Patent No. 2494,619. 1 sheet of drawings 609 557/261 3.66 © Bundesdruckerei Berlin