EP0908244B1 - Installation for the manufacture of a hot-rolled product - Google Patents

Abstract

The installation includes pivotable and/or transversely movable billet guide units (5) with guide sections (7, 8) which can be alternately aligned with the line (D) of the rolling installation (4). A pivotable and/or transversely movable billet guide unit (6) of an adjacent billet casting line (A, B), for a position (I) of the billet unit (5), is aligned with the guide section (8) of the latter.

Description

The invention relates to a plant for producing a hot-rolled product from a Casting strand with two or more continuous casting machines and one associated with them Rolling mill, each with guide sections for transporting one of the cast strand separated strand piece, wherein in at least one line of the rolling mill and in a with This non-aligned line of a continuous casting machine each have a swivel or provided laterally movable guide portion which is aligned in a position are aligned with each other.

A device of this kind is known from EP-B 0 492 226 and EP-B 0 593 002.

According to EP-B 0 492 226 the redirecting of a strand piece from the line of one of the Continuous casting machines in the line of the rolling mill with the help of two as rotary furnaces formed guide sections, wherein a pivoting furnace in the line of Continuous casting machine and the second pivoting furnace is arranged in the line of the rolling mill, and both pivoting furnaces in each case a pivoting position aligning aligned with the line are in which they are arranged, and in each case a second pivot position with each other in straight connection can be brought standing, wherein the free ends of the two Connect swivel stoves to each other.

This makes it possible, after introducing a strand piece in the pivoting furnace, in the Line of the continuous casting machine is arranged by pivoting the pivoting ovens in the Transfer connection position in the pivoting furnace, in the line of the rolling mill is provided, and then by pivoting back of the second pivoting furnace in the line the rolling mill to supply the thus redirected strand piece of the rolling mill.

A very similar method and a device for this purpose are known from EP-B 0 593 002 known, whereby here also two pivotable or laterally movable ovens are provided, the for redirecting a strand part of a line of a continuous casting machine in the line serve the rolling mill. Again, the two movable furnaces open in alignment to each other, however, the conveying direction of the strand part is reversed twice, i. that when conveying the strand piece from one line to the other the strand piece in opposite direction to the conveying direction of the continuous casting machine and the rolling mill emotional.

A disadvantage of these known systems is the unconditional temporal coupling of the two pivotable or movable ovens, since they are aligned with each other need to divert a strand piece. This results in a temporal coupling of Lines of continuous casters and rolling mill line. It is during diverting namely, not possible, the line from which or in which the strand piece is to be conveyed, continue to operate, i. Here it is absolutely necessary to interrupt the operation until the umzuleitende strand piece has moved entirely from a line or in the line, in which it is to be introduced, is located and is further promoted.

The invention aims to avoid these disadvantages and difficulties and arises the task of creating a system of the type described above, which is the rolling of strand pieces of two or more casting machines with a single rolling mill allow, but the casting and rolling operation are made largely flexible can, in particular, a decoupling of a temporal dependency when redirecting a strand piece be given to the effect that not all lines in the Redirection of a strand piece are affected, at the same time for conveying further Strand pieces are out of service; it should rather be possible, even if the diverting a strand is introduced or terminated from one line to another, the other Still keep it running.

This object is achieved in that at least one swivel and / or laterally movable guide portion with two or more of each of the Recording of strand pieces serving guide parts is provided, which alternately each aligned in the line of the rolling mill are aligned, wherein in one position this Führungsabschnittes a pivotable or laterally movable guide portion of a adjacently arranged line of a continuous casting machine in alignment with one of Guide parts of the two or more guide parts having guide portion is alignable, and in this position, a second guide part of this guide section aligned with the line of the rolling mill.

A preferred embodiment is characterized in that the guide parts of the two or more guide parts equipped guide portion to each other V-shaped are arranged and pivotable about an axis which in one of the lines of Continuous casting or rolling plant and at the intersection of the longitudinal axes of the V-shaped arranged guide parts is located.

Another expedient embodiment is characterized in that the Guide parts of the equipped with two or more guide parts guide portion are arranged approximately parallel to each other.

A plant in which an even further decoupling of continuous casting and the subsequent hot rolling is possible, characterized in that between adjacent lines of a continuous casting machine and the rolling mill an oven is provided wherein a guide part of a pivotable or laterally movable guide portion in a position aligned with the furnace and in a further position in line with the line Rolling mill is alignable.

The arrangement of a furnace between the lines is an additional memory created in which a strand piece can be introduced, u.zw. while the line in the the strand piece is then to be delivered, even further in continuous operation is In This oven can then with upright operation of all lines a heat treatment of the Strangstückes be performed. This strand is only then in the other line transferred if there is a free capacity for this line logistically. This is the Timing of delivery regardless of a simultaneous interruption of both involved lines.

Preferably, the oven provided between the lines is arranged stationary and is this formed as a storage oven.

Preferably, the guide sections and the guide parts are formed as ovens.

A space-saving embodiment is characterized in that the rolling mill with their line is arranged in line with the line of one of the continuous casting machines, but wherein also an arrangement of the rolling mill with its line between two adjacent lines two continuous casting is possible.

The invention is described below with reference to the schematic drawings of four Embodiments explained in more detail, wherein FIGS. 1 to 3, a first embodiment in Different operating conditions in plan view, Figs. 4 to 6 in to Figs. 1 to 3 analogous representation of another embodiment, Figs. 7 and 8, a third Embodiment in to Figs. 1 and 2 analog representation and Figs. 9 and 10 a fourth variant in FIGS. 7 and 8 analog representation illustrate.

With 1 and 2 are two continuous casting machines - for example, for casting thin slabs, Billets etc. - marked; the approximately parallel lines of these two Continuous casting 1 and 2 bear the reference numerals A and B. Under line is the Longitudinal axis of the strand guide understood along the strand of the Continuous casting machine is discharged. The in these continuous casting 1 and 2 cast strands are thus each along the associated lines A and B, respectively emotional. In the strand guide of each of the continuous casting machines 1 and 2 is one each Separator for cutting the strand, i. to form individual strand pieces intended. The strand pieces are moved along the lines A and B, wherein in these lines holding furnaces 3 and / or Aufheizöfen are provided so that the in the Strang pieces still present sensible heat for as immediate as possible subsequent rolling process, which should connect with a very short time interval, as completely as possible.

In alignment with the line A of the continuous casting machine 1, a rolling mill 4 is provided, whose Line D coincides with the line A. With this rolling mill 4 to the two Continuous casting 1 and 2 resulting strand pieces are rolled.

To from the continuous casting machine 2 and the line B a strand piece in the line D of To be able to bring rolling mill 4 are in each of the lines B and D of the continuous casting machine. 2 and the rolling mill 4 pivotable guide sections 5 and 6 are provided which are advantageous are also designed as holding furnaces or as Aufheizöfen. The one in the line D the Rolling mill 4 provided guide section 5 is formed by two guide members 7 and 8, each serving to receive strand pieces. It could also be more than two Be provided guide parts. These guide parts 7 and 8 are at an angle α to one another, wherein the size of this angle α is chosen such that according to in Fig. 1 with full Lines shown position I a guide part 7 in alignment with the line A and line D to lie comes and the other guide part 8 in alignment with the line B arranged Guide section 6 comes to rest when this is in the in Fig. 1 with solid lines shown position I is located. Here are the guide part 8 of Guide portion 5 and the guide portion 6 in to the lines D and B, respectively acute-angled orientation. The guide sections 5 and 6 can each be in Swing positions II, which are shown in Fig. 2 with solid lines and in which the Guide part 8 of the guide portion 5 and the guide portion 6 with their longitudinal axes aligned with the lines D and B. To pivot the guide sections 5 and 6 are used not shown drives of any kind.

According to this embodiment, the transfer from the line B in the line D in. Can be Perform a very short period of time, since during the conveyance of strand pieces the line A to the rolling mill 4 an introduction of strand pieces in the guide section. 5 the line A from the guide portion 6 of the line B is possible, u.zw. in the to Guide section 6 of FIG. 1 in position I aligned guide part 8. Nach Pivoting the guide portion 5 in the position II shown in FIG. 2 can Strang pieces from the guide part 8 of the rolling mill 4 are supplied.

The pivoting of the guide sections 5 and 6 takes place in lines D and B. lying pivot axes 9 and 10, wherein the pivot axis 9, the guide portion. 5 is assigned, at the intersection of the longitudinal axes of the guide parts 7 and 8 is arranged.

The function of the overall system shown in FIGS. 1 to 3 is as follows:

If a strand piece, for example a thin slab, from the line B in the line D of Rolling unit 4 are spent, the strand piece is first in the guide section 6, which is associated with the line B, introduced, with this guide section 6 in for Line B is aligned position II (Fig. 2). Then, this guide section 6 in Position I (Figure 1) pivoted; he is then aligned with the guide part 8 of the Guide section 5 in position I, and it can be the strand piece in the guide part. 8 be introduced.

Subsequently, the line B associated with the guide section 6 again be swung back so that it is aligned with the line B again. In this situation, the Guide section 6 in turn take a strand piece. Once the line D is free, will the guide section 5 is pivoted into position II, which position in FIG. 2 is illustrated. Now the strand piece from the guide part 8 in the line D introduced and it can be supplied to the strand of the rolling mill 4. Subsequently the guide section 5 can be swung back into position I, as shown in FIG Fig. 3 is shown.

The lengths of the guide parts 7, 8 of the guide section 5 and the length of the Guide section 6 are dimensioned so that in aligned position of the guide portion. 6 with the guide part 8 their free ends 11, 12 connect to each other.

According to FIGS. 1 to 3, the transfer of a strand piece from the line B takes place in the Line D under two major changes of direction. However, this does not have to be the case his; it could also be made the arrangement so that when redirecting the Strangstückes no reversal is necessary, but the strand piece in the Divert always an acute angle to the direction in which it moves from the caster exit.

To promote the strand pieces along the lines A and B are preferably driven Rolls provided in these lines. The guide sections 5 and 6 also have powered rollers, wherein at a reversal of direction when transferring from the line B in the line D the drives must be reversible.

Both the guide portion 5 with two V-shaped guide parts 7 and 8 and the Guide section 6 can be replaced by a guide section laterally available, e.g. movable in parallel or parallel, wherein the Guide section 5 with two or more approximately parallel to each other Guide parts is equipped. The arrangement would be such that in a position of Guide section 5 one of its guide parts with the line D of the rolling mill 4 and a other of its leadership parts with the in a position between the lines B and D. spent guide section 6, which is associated with the line B, is aligned. It would be too conceivable to equip a guide section 5 with more than two guide parts, the successively with a line of a continuous casting machine and with the line D of the rolling mill. in alignment can be brought into position.

According to the embodiment of FIGS. 4 to 6 is between the two lines A and D. a furnace 13 is provided, either as a temperature compensation furnace, as a holding furnace or is designed as a heating oven and is advantageously arranged stationary. This stove 13, the advantageously acts as a storage furnace, is aligned with its longitudinal direction such that he in the positions I of the guide sections 5 and 6, in which the lines D and B associated guide sections 5 and 6 are aligned with each other Guide sections 5 and 6 are aligned. Each guide section 5 and 6, i. from Guide section 5 whose guide part 8, closes with a free end 11 and 12 at one end 14 and 15 of the oven 13, u.zw. in the pivot position in which the two Guide sections 5 and 6 are aligned. The length of the guide parts 7, 8 of Guide portion 6 and arranged between the lines D and B furnace 13th is determined by the required specific strand weights and the thicknesses of the Strand pieces.

The function of the overall system shown in FIGS. 4 to 6 is as follows:

If a strand piece, for example a thin slab, from the line B in the line D of Rolling unit 4 are spent, the strand piece is first in the guide section 6, which is associated with the line B, introduced, with this guide section 6 in for Line B is aligned position II (Fig. 4). Then, this guide section 6 for aligned between the lines A and D furnace 13 aligned, i. in position I pivoted, and it can be introduced the strand piece in the oven 13. This position I is shown in FIG.

Subsequently, the line B associated with the guide section 6 again pivoted back so that it is aligned again with the line B (Fig. 6). As soon as the Line D is free, i. the guide part 8 of the line D or A assigned Guide section 5 is unoccupied, the guide section 5 is in a furnace to the 13th aligned position I pivoted, which position is illustrated in Fig. 4 Now can the strand piece in the guide section 5 associated with the line D or A, i. whose Guide part 8 are introduced, whereupon the guide section 5 with its guide part 8 pivoted back into a position II aligned to the position II and the strand piece of Rolling mill 4 can be supplied.

In the position of the overall system shown in Fig. 4, a strand piece from the line A be abandoned in her assigned guide section 5 or for rolling be transported further. At the same time, a strand piece in the line B in this Line associated guide section 6 and also introduced into the guide section 5 become. According to Fig. 5, a strand piece from the line B in between the lines D and B arranged furnace 13 are introduced and at the same time a strand piece in the line A introduced in the guide section 5 associated with this line or for rolling be transported further. According to FIG. 6, the previously introduced into the guide part 8 Strangstück the rolling mill 4 are supplied.

Instead of the pivotable guide sections 5, 6 could also be laterally moved Guide sections may be provided, wherein the lateral displacement as by a Parallel method or parallel displacement of the guide sections can take place. In In this case, the arranged between the lines B and D furnace 13 would be approximately parallel to the Lines A, B and D aligned.

According to the embodiment shown in FIGS. 7 and 8, there are three continuous casting machines 1, 2 and 16 adjacent to each other, with parallel lines of these Continuous casting machines 1, 2 and 16, namely A, B and C, result. The rolling mill 4 is with their line D in alignment with the line B arranged. In this case, the guide portion 5 with two guide members 7 and 8, which are also at an angle α to each other, in the middle arranged line B and D arranged, and it succeeds by pivoting this Guide section 5 whose guide parts 7 and 8 in alignment with the pivotable Align guide portions 6 of the adjacent lines A and C. In both in FIGS. 7 and 8 shown pivotal positions I and II is respectively a guide member 7 and 8 of the pivotable guide portion 5 in aligned to the line B and D line position aligned.

According to the embodiment shown in Figs. 9 and 10 are also three Continuous casting 1, 2 and 16 arranged adjacent to each other, wherein parallel Lines of these continuous casting machines 1, 2 and 16, namely A, B and C, result. The Rolling mill 4 is arranged with its line D in alignment with the line B. Also this case is a Guide section 5 with two guide members 7 and 8, which are also at an angle α to each other stand, arranged in the centrally arranged line B and D, and it succeeds by Pivoting this guide section 5 whose guide parts 7 and 8 once aligned to the furnace 13 arranged between the lines A and D and once with the other Guide member 8 in alignment with the arranged between the lines C and D furnace 13th align. In both of the pivotal positions shown in Figs. 9 and 10, one is respectively Guide member 7 and 8 of the pivotable guide portion 5 in line B or line D aligned position.

The guide portion 5 with two V-shaped guide parts 7 and 8 can also according to this variant can be replaced by a guide section which can be laterally moved, e.g. movable in parallel or parallel, and with two or more about equipped parallel to each other guide members, wherein the arrangement should also be made so that in a position of the guide portion of the Guide parts with the line D of the rolling mill 4 and the other of the guide parts with the between the line D of the rolling mill 4 and the line A or C of a continuous casting machine 1 or 16, which are not aligned with the rolling mill 4, lying furnace 13 is aligned. This other Guide part would have parallel displacement or procedure in alignment with the line D of Rolling mill 4 be brought.

If the guide sections 5 and 6 are formed as ovens, the ovens are off economic reasons only designed to accommodate a single strand piece, this is true for the guide section 5 in that each of its guide parts 7 and 8 each receives only a single strand piece. The guide sections 5 and 6 meet no storage function, but only a transport and a warming and Temperature compensation function.

Of course, the number of continuous casting machines can vary, as well as the Number of rolling mills assigned to them. So it is conceivable, e.g. three, four or five Continuous casters to assign two rolling mills, also the idea of the invention can be realized.

Claims (8)

1. A plant for producing a hot-rolled product from a casting strand by means of two or more continuous casting machines (1, 2, 16) and a roller installation (4) associated therewith, each of them comprising guiding portions (3, 5, 6) for transporting a strand piece separated from the casting strand, whereby, in at least one line (D) of the roller installation (4) and in a line (A, B, C) not in alignment therewith of a continuous casting machine (1, 2, 16), a pivotable or laterally displaceable guiding portion (5, 6) is provided in each case, which portions may be arranged in a position (I, II) so as to be in alignment with each other, characterized in that at least one pivotable and/or laterally displaceable guiding portion (5) comprising two or several guiding parts (7, 8), each of them serving to receive strand pieces, is provided, which parts alternately may be arranged so as to be in alignment with line (D) of the roller installation (4), whereby, in a position (I, II) of said guiding portion (5), a pivotable or laterally displaceable guiding portion (6) of an adjacent line (A, B, C) of a continuous casting machine (1, 2, 16) may be be arranged so as to be in alignment with one of the guiding parts (7, 8) of the guiding portion (5) equipped with two or more guiding parts (7, 8) and, in that position (I, II), a second guiding part (7) of said guiding portion (5) is arranged so as to be in alignment with line (D) of the roller installation (4).
2. A plant according to claim 1, characterized in that the guiding parts (7, 8) of the guiding portion (5) equipped with two or more guiding parts (7, 8) are located in a V-shaped arrangement to each other and are pivotable about an axis (9) lying in one of the lines (A, B, C, D) of the continuous casting machines (1, 2, 16) or of the roller installation (4), respectively, and in the intersection of the longitudinal axes of the guiding parts (7, 8) forming a V-shaped arrangement.
3. A plant according to claim 1, characterized in that the guiding parts (7, 8) of the guiding portion (5) equipped with two or more guiding parts (7, 8) are arranged so as to be roughly parallel to each other.
4. A plant according to one or several of claims 1 to 3, characterized in that, between the adjacent lines (A, B, C, D) of a continuous casting machine (1, 2, 16) and of the roller installation (4), a furnace (13) is provided, whereby a guiding part of a pivotable or laterally displaceable guiding portion (5) may be arranged in a position (I, II) so as to be in alignment with the furnace (13) and may be arranged in a further position (I, II) so as to be in alignment with line (D) of the roller installation (4) (Fig. 4, 5, 6; 9, 10).
5. A plant according to claim 4, characterized in that the furnace (13) is located in a stationary position.
6. A plant according to claim 5, characterized in that the furnace (13) is configured as a regenerative furnace.
7. A plant according to one or several of claims 1 to 6, characterized in that the guiding portions (5, 6) and guiding parts (7, 8) are configured as furnaces.
8. A plant according to one or several of claims 1 to 7, characterized in that the line (D) of the roller installation (4) is arranged so as to be in alignment with one of the lines (A, B, C) of the continuous casting machines (1, 2, 16).

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