EP0025458B1 - Dispositif pour transférer facultativement des barres profilées flexibles ainsi que des barres profilées relativement rigides, ayant des sections différentes, entre des trains de laminage et des lits de refroidissement subordonnés - Google Patents

Dispositif pour transférer facultativement des barres profilées flexibles ainsi que des barres profilées relativement rigides, ayant des sections différentes, entre des trains de laminage et des lits de refroidissement subordonnés Download PDF

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Publication number
EP0025458B1
EP0025458B1 EP19790103503 EP79103503A EP0025458B1 EP 0025458 B1 EP0025458 B1 EP 0025458B1 EP 19790103503 EP19790103503 EP 19790103503 EP 79103503 A EP79103503 A EP 79103503A EP 0025458 B1 EP0025458 B1 EP 0025458B1
Authority
EP
European Patent Office
Prior art keywords
roll
rolling
roller table
cooling bed
roll table
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19790103503
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German (de)
English (en)
Other versions
EP0025458A2 (fr
EP0025458A3 (en
Inventor
Gerhard Berz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMS Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to DE7979103503T priority Critical patent/DE2966554D1/de
Priority to EP19790103503 priority patent/EP0025458B1/fr
Publication of EP0025458A2 publication Critical patent/EP0025458A2/fr
Publication of EP0025458A3 publication Critical patent/EP0025458A3/de
Application granted granted Critical
Publication of EP0025458B1 publication Critical patent/EP0025458B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/18—Switches for directing work in metal-rolling mills or trains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/34—Arrangements or constructional combinations specifically designed to perform functions covered by more than one of groups B21B39/02, B21B39/14, B21B39/20

Definitions

  • the invention relates to a device for the optional transfer of flexible and rigid profile cross sections of various cross-sectional shapes between continuous fine steel or medium steel rolling mills, in which a cooling bed is assigned to each rolling line in two roughly parallel rolling lines and a pivotable switch section is arranged between them, which enables either to feed a cooling bed to each of the roughly parallel rolling lines or to feed one or the cooling bed assigned to the other rolling line from one rolling line.
  • a rolling mill for fine and medium steel with a wide rolling program with regard to profile shape and profile cross-sectional dimensions in the so-called multi-line arrangement (DE-C-1057048) between the rolling trains in two approximately parallel rolling lines and a very long double roller table for the two mutually parallel rolling lines is designed as a swivel switch.
  • the swivel switch In view of the large masses of the swivel switch to be moved, however, it is only possible to change the swivel switch from one cooling bed to that of the other rolling line in the case of single-core rolling during longer break times in order to utilize the capacity of both cooling beds. In practice, the first one cooling bed and then the other cooling bed is fully loaded.
  • the swiveling switch already has the advantage of transferring relatively rigid rolling stock to the cooling bed of the other rolling line with very little deflection, but the disadvantage of an average shorter cooling time for the partial lengths on the cooling beds results from the way in which both cooling beds are occupied.
  • the cold scissors arranged downstream of the cooling beds are loaded with the double production associated with the partial lengths associated with the cooling beds for subdivision into commercial lengths. Furthermore, it is difficult to alternately transfer wide flat profiles to one or the other cooling bed without permanent deformation.
  • the object of the invention is to provide a switch arrangement between a rolling mill with two roughly parallel finishing stages or in a multi-line arrangement and the associated cooling beds, which enables a quick, short-term and precise changeover of the switch, for example in the subsequent period between two successive rolling stock strands which consist of two successive ones , Rolling billets supplied from the furnace to the rolling train or switching between two successive partial lengths are possible and the advantage of the low lateral deflection, in particular of relatively rigid rolling stock, is maintained or improved.
  • the conveyor roller table upstream of the switches should be adaptable in terms of its length dimensions to the product range of the upstream rolling mill.
  • the switch section per rolling line consists of a fixed guide roller table, a relatively short swivel switch and a fixed distributor roller table, as well as a subsequent, movable, movable roller table that forms the overrun roller table to the cooling bed.
  • the fixed distributor roller table consists of two V-shaped roller table sections that run at a slight angle to each other, one longitudinal axis of which is directed in the rolling line to the cooling bed assigned to this rolling line and the longitudinal axis of the other roller table section is directed to the cooling bed associated with the other rolling line.
  • the distributor roller table can be designed, for example, as a V-shaped, forked roller table.
  • Such a design of the switch section has the advantage that it is possible with the very small swivel angle of the low-mass swivel switch, either in the subsequent times of two successive rolling stock strands of two tapping billets successively fed to the rolling train, or between two successive partial lengths with single-core rolling in one or the other other rolling line of the two roughly parallel rolling lines the partial lengths of to be able to transfer relatively rigid rolling stock for each strand of rolling stock from the rolling line to one or the other cooling bed in a reliable manner.
  • the upstream stationary guide roller table should have a different length depending on the program or product range of the rolling mill. This has the advantage that a long, stationary conveyor roller table is switched on, for example, with an interposed water cooling section, high rolling speeds and wider profile dimensions. In contrast, a shorter stationary conveyor roller table is provided for small profile widths in the product range and lower rolling speeds.
  • the fixed guide roller table is dimensioned long, for example approx. 35 m long, to which a short swivel switch of approx. 6 m length with a fixed distributor roller table of approx the cooling roller caster designed as a swivel roller table for each rolling line follows.
  • the fixed guide roller table is dimensioned short, for example approx. 4 m long, for each rolling line behind the dividing scissors assigned to each finishing relay, with a short swiveling switch of approx. 6 m length with a fixed distributor roller table of approx. 6 m and a transverse to Downstream of the rolling line are movable movable part of the roller table, which is followed by the roller table designed as a swivel roller table for the cooling beds per rolling line.
  • the advantage of this design is that the long roller table part movable transversely to the rolling line enables the angle of inclination between the forked roller table parts of the distributor roller tables to be reduced even further.
  • the swivel switch and the movable roller table sections can be moved along guide tracks in a known manner by means of displacement means, for example pneumatic or hydraulic adjustment means or electrical drives.
  • the swivel switch is controlled in dependence on the cut command of the upstream part shears via a photo cell or the like electronic sensor located in the feed roller table in front of the swivel switch.
  • the finishing stages 1, 1a are part of a rolling mill for fine steel or medium steel with possibly parallel but offset staggered mill stands, consisting of duo mill stands with caliber roll sets, each of which are arranged one behind the other offset by 90 °.
  • the structural design of the rolling mill is known, for example, as a so-called multi-line arrangement or as a rolling mill with two roughly parallel rolling lines and allows the rolling of a wide rolling program in both rolling lines simultaneously or in just one rolling line of different profile cross sections and cross-sectional dimensions of flexible and relatively rigid rolling stock.
  • the profile cross-sections essentially include round profiles from 8 to 70 mm in diameter, square profiles from 8 to 70 mm edge length, scheskant and octagonal profiles from 8 to 70 mm width across flats, flat profiles from 12 to 150 mm width, isosceles angles from 16 x 16 mm to 90x90 mm Edge length and isosceles angles from 30x20 to 100x75 mm edge length, U-profiles from 30x20 to 100x40 mm, T-profiles from 20 to 80 mm high and double-T profiles up to 100 mm wide.
  • two-core rolling is simultaneously in rolling line I and 11
  • single-core rolling is in rolling line I or rolling line II, i.e. in the main line I or in the secondary line II.
  • a rotating part shear 2, 2a is arranged downstream of the finishing scales 1, 1 a in roller tables (not further specified).
  • a relatively long, for example approx. 35 m long, stationary guide roller table 3, 3a is arranged behind each of the scissors 2, 2a, each leading to a swivel switch 4, 4a of approx. 6 m in length which can be actuated by means of hydraulic, pneumatic or electrical power means 10 .
  • the swivel switches 4, 4a are approx. 6 m long also designed as roller tables. This is followed by, for example, a V-shaped, stationary distributor roller table with roller table branches which bifurcate at an angle of inclination a of approximately 9 °.
  • the one roller table section of the distributor roller table 5 or 5a is arranged with its longitudinal axis in continuation of the rolling line I or 11, while the other roller table section of the distributor roller table 5 or 5a has its longitudinal axis diagonally on the cooling bed 8a assigned to the other rolling line II or I , 8 is directed at an angle of inclination a of up to approximately 9 °.
  • a swivel roller table 6, 6a is arranged, which from one rolling line into the other rolling line by means of hydraulic or similar displacement means 11 along sliding guides 9 about a pivot axis S lying in front of the cooling bed can be pivoted.
  • the Schwenkrotlgang 6 or 6a also forms the overrun roller table to the respective cooling beds, which continues next to the cooling beds, and is equipped with overflow channels, separating and braking means, such as brake slides, for braking the supplied partial lengths and transferring them to the cooling bed.
  • the swivel roller table 6 or 6a is only ever moved once when changing the program.
  • FIG. 2 shows a further embodiment of the arrangement.
  • the arrangement differs from that of FIG. 1 only in that the pivoting roller table 6a has been pivoted by means of the displacement means 11 from the rolling line I into the roller table section of the distributor roller table 5 which is directed towards the cooling bed 8a with its longitudinal axis.
  • this mode of operation it is possible, with single-core rolling in the rolling line I, relatively rigid profile cross-sections of larger cross-sectional dimensions, such as thicker fine steel and medium steel profiles, with the least possible lateral deflection up to approx. 9 ° angle of inclination alternately to the cooling bed 8 or when reversing the pivoting switch 4 Supply cooling bed 8a.
  • flat profiles up to 150 mm wide can also be deflected without permanent curvature.
  • the reversing of the swivel switch 4 can be done without difficulty after each roll strand rolled by a tapping stick in the short pause between the outgoing tail end of the leading rolling strand and the incoming head end of the following rolling strand of the next tapping stick or in the subsequent time between two successive ones. Part lengths are done. Accordingly, the partial lengths of a tapping stick supplied to the rolling mill or the successive partial lengths can be transferred alternately to one of the cooling beds 8 or 8a. This allows the dwell time and thus the cooling time of the partial lengths on the cooling bed to be increased; on the other hand, different material qualities of the tapping billets supplied by the rolling mill can also be separated.
  • FIG. 2 can also be applied analogously to the rolling line II for single-core rolling of thicker, relatively rigid rigid steel and medium steel profiles, the swivel roller table 6a the partial lengths in the cooling bed 8a and the swivel roller table 6 swung into the other roller table section of the distributor roller table 5a Feeds the cooling bed 8 in part lengths.
  • the swivel switch 4a is actuated alternately, as described above.
  • the swivel roller table 6, 6a is only moved once when changing the program.
  • FIGS. 1 and 2 each again designate a finished series arranged in mutually parallel rolling lines I and II, hereinafter referred to as main and secondary strand I and 11, respectively.
  • the finishing scales 1, 1 are also part of a rolling mill for fine steel or medium steel for the production of flexible and relatively rigid profile cross sections of various cross-sectional shapes of the dimensions described above.
  • the finishing scales 1, 1 are followed by roller tables and rotating part shears 2, 2a, which are relatively short, stationary guide roller tables 13, 13a of approx. 4 m length with swivel switches 4, 4a and fixed, for example V-shaped, distributor roller tables 5, Bear 5a, each about 6 m long.
  • the stationary distributor roller tables 5, 5a are, for example, V-shaped, so that each bifurcated roller table section with its longitudinal axis in the rolling line I or 11 and its other roller table section with its longitudinal axis diagonally in the direction of the other rolling line I or II Cooling bed 8a and 8 is directed.
  • roller table section 7, 7a which can be moved in the horizontal plane by means of displacement means 12, along sliding guides 14, which also transfer partial lengths with thicker profile cross sections, for example from the rolling line I via the swivel roller table 6a to the cooling bed 8a of the rolling line II or vice versa only possible with a slight lateral deflection light.
  • roller table parts 7, 7a By inserting the roller table parts 7, 7a it is achieved that the two rolling lines and II can be approximated further in terms of their spacing from one another in terms of their distance from finished season 1 or 1, thereby further reducing the deflection angle a for transferring the rolling stock by means of the distributor roller tables 5, 5a can be.
  • Fig. 3 the arrangement for two-wire rolling of thinner, flexible profile cross sections at high rolling speeds, for example about 20 m / s, different cross-sectional shape in the rolling line I or the main strand and the rolling line II or the secondary strand II each on Cooling bed 8 and 8a shown.
  • FIG. 4 shows the arrangement for single-core rolling of thicker, relatively rigid profile cross sections of various cross-sectional shapes or at high rolling speeds, such as fine steel and medium steel profiles, in order to alternate the partial lengths of a strand of rolling stock onto the cooling bed 8 or the cooling bed 8a from the main strand 1 to convict.
  • the mode of operation corresponds analogously to that described for FIG. 2, in which from the rolling line I via the movable roller table part 7 and the swivel roller table 6 a continuous rolling material guide to the cooling bed 8 and a further continuous rolling material guide from the other roller table section of the distributor roller table 5 via the movable one Roller table part 7a and the swivel roller table 6a to the cooling bed 8a is produced.
  • the material qualities of rolled products can advantageously be separated from one another by tapping billets fed to the rolling train from the furnace.
  • the movable roller table part 7, 7a and the swivel roller table 6, 6a are only moved when the program is changed.
  • the arrangement shown in FIG. 4 for the rolling line I can also be used for the rolling line II, as shown in broken lines, for thicker cross sections with relatively rigid rolling stock and at high rolling speeds.
  • deflection-sensitive large profile cross sections in particular wide flat profiles up to approx. 150 mm wide
  • deflection-sensitive large profile cross sections in particular wide flat profiles up to approx. 150 mm wide
  • one-core rolling alternately to one or the other cooling bed during the break times of the successive partial lengths or the successive rolled material strands can be transferred from tapping billets and, on the other hand, there is sufficient manipulation time to be able to set up the pivotable roller table parts from the two-wire rolling for the single-wire rolling as a rolling stock guide to the cooling beds.
  • the arrangement is also suitable for alternately transferring partial lengths of profile cross sections with high rolling speeds to both cooling beds.
  • the design or length of the stationary conveyor roller table 3, 3a or 13, 13a of the product range of the rolling mill and the rolling speed of the porifle can be adapted.
  • the swivel switches 4, 4a are also designed as short roller table sections or as rolling stock guides and the reversal from one rolling line to the other in the pause times between the tail end of a rolling stock strand of the previous tapping stick and the head end of the subsequent rolling stock strand next piercing stick or in the pause between two successive partial lengths by means of electrical sensors F, for example photocells, via the pneumatic, hydraulic or electrical displacement means 10, the electrical sensors F being controlled as a function of the cutting command of the shears 2, 2a.
  • the braking and separating means arranged in the ramp roller tables 6, 6a are connected to those of the further ramp roller tables next to the cooling beds via articulated link members.
  • Fig. 5 shows the swivel switch with the distributor roller table in the detail in the enlargement.
  • the design of the distributor roller table allows various alternatives, as shown below.
  • the distributor roller table 5, 5a is according to FIG. 6, for example, as a V-shaped, in two roller table sections bifurcated at the angle of inclination a, the longitudinal axes of which, as shown in dashed lines in FIGS. 1 to 4, in connection with the pivoting roller tables 6, 6a, the partial lengths on the cooling beds 8, 8a in single-core operation in the rolling line I or II in accordance with the control the swivel switch 4, 4a transfer.
  • the roller table rollers which are shown in the drawing in principle only by the course of their longitudinal axis, can be designed as perpendicular to the longitudinal axis of the roller table sections or as inclined rollers.
  • the distributor roller table 15a is provided as a wider roller table on the inlet side with a separating strip 16, which is then followed by the bifurcating roller table branches at an angle of inclination a and the roller table rollers are arranged at right angles to their longitudinal axis.
  • Fig. 6b also shows the distributor roller table 15b on the inlet side as a wider roller table with a separating strip 17, in which the roller table rollers in the roller table branches with inclined rollers, i.e. roller table rollers arranged inclined to the longitudinal axis of the roller table branches are provided.
  • a further distributor roller table 15c is shown in side view and in plan view, in which the swivel switch can be reversed in the vertical plane by means of a power means 10.
  • the roller table branches 18, 19 lie one above the other and run out at a spatial inclination to one another in a horizontal plane at the angle of inclination a.
  • the roller table branches are preceded by wedge-shaped tapered plate coverings 20, 21 in order to ensure reliable guidance of the partial lengths running up controlled by the pivoting switch 4, 4a.
  • roller table rollers of the fixed and movable roller table sections are preferably equipped with a single drive in a known manner.
  • the roller table rollers of the roller table branches can be designed as roller table rollers arranged at right angles to the longitudinal axes or as inclined rollers.
  • the roller table branches can also be replaced by simple gutter sections if necessary.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Claims (6)

1. Dispositif pour transférer à volonté des profilés flexibles et relativement rigides de différentes sections, dans le cas des trains de laminage continu pour acier fin et acier moyen (1, 1 a), dans lesquels dans deux lignes de laminage (I, II), à peu près parallèles l'une à l'autre, un lit refroidisseur (8 et 8a) correspond à chaque ligne de laminage, (I et II), avec disposition intermédiaire d'un tronçon d'aiguillage mobile en pivotement qui permet soit d'approvisionner simultanément à partir des deux lignes de laminage (I, II) respectivement un lit refroidisseur (8 et 8a) soit d'approvisionner à partir respectivement d'une ligne de laminage (I et II) l'un des refroidisseurs (8 ou 8a) ou celui correspondant à l'autre ligne de laminage, caractérisé en ce que le tronçon d'aiguillage est constitué, pour chaque ligne de laminage, d'un transporteur fixe à rouleaux de guidage (3, 3a; 13, 13a), d'un aiguillage pivotant relativement court (4, 4a) avec un transporteur à rouleaux répartiteur (5, 5a) fixe; et en ce qu'un transporteur à rouleaux pivotant (6, 6a), en aval, constitue le transporteur à rouleaux d'accès au lit refroidisseur (8, 8a), le transporteur à rouleaux répartiteur (5, 5a), fixe, étant constitué de deux tronçons de transporteur à rouleaux ayant la forme d'un V et courant sous un faible angle d'inclinaison (a) l'un par rapport à l'autre, tronçons dont un axe longitudinal, dans la ligne de laminage (I ou II) est dirigé vers le lit refroidisseur (8 ou 8a) correspondant à cette ligne de laminage et dont l'axe longitudinal de l'autre tronçon de transporteur à rouleaux est dirigé sur le lit refroidisseur (8a ou 8) correspondant à l'autre ligne de laminage (II ou I).
2. Dispositif selon la revendication 1, caractérisé en ce que le transporteur à rouleaux de guidage (3, 3a; 13, 13a) fixe en amont de l'aiguillage pivotant (4, 4a) présente une longueur différente selon la palette du programme du train de laminage.
3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que l'aiguillage pivotant court (4, 4a) et le transporteur à rouleaux répartiteur (5, 5a) sont en aval d'un transporteur à rouleaux de guidage fixe, (3, 3a) d'assez grande longueur.
4. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que l'aiguillage pivotant court (4, 4a) et le transporteur à rouleaux répartiteur (5, 5a) sont disposés en aval d'un transporteur à rouleaux de guidage, fixe, (13, 13a), plus court; et en ce qu'entre le transporteur à rouleaux répartiteur (5, 5a) et le transporteur à rouleaux pivotant (6, 6a) est disposé un tronçon (7, 7a) de transporteur à rouleaux mobile dans la direction transversale à la ligne de laminage.
5. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'aiguillage pivotant (4, 4a) ainsi que le tronçon de transporteur à rouleaux mobiles (6, 6a; 7, 7a) se déplacent au moyen de ripeurs (10, 11, 12) le long des rails de guidage (9, 14).
6. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'aiguillage pivotant (4, 4a) peut être piloté en fonction de l'instruction de coupe de la cisaille de tronçonnage (2, 2a) disposé en amont, par l'intermédiaire d'une cellule photoélectrique, ou détecteur électronique du même genre (F) situé sur le transporteur à rouleaux d'amenée, avant l'aiguillage pivotant (4, 4a), sur le côté de la ligne de laminage.
EP19790103503 1979-09-18 1979-09-18 Dispositif pour transférer facultativement des barres profilées flexibles ainsi que des barres profilées relativement rigides, ayant des sections différentes, entre des trains de laminage et des lits de refroidissement subordonnés Expired EP0025458B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE7979103503T DE2966554D1 (en) 1979-09-18 1979-09-18 Device for optionally passing flexible as well as relatively rigid profiles of various cross-sections between continuous-rolling mills and subsequent cooling beds
EP19790103503 EP0025458B1 (fr) 1979-09-18 1979-09-18 Dispositif pour transférer facultativement des barres profilées flexibles ainsi que des barres profilées relativement rigides, ayant des sections différentes, entre des trains de laminage et des lits de refroidissement subordonnés

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19790103503 EP0025458B1 (fr) 1979-09-18 1979-09-18 Dispositif pour transférer facultativement des barres profilées flexibles ainsi que des barres profilées relativement rigides, ayant des sections différentes, entre des trains de laminage et des lits de refroidissement subordonnés

Publications (3)

Publication Number Publication Date
EP0025458A2 EP0025458A2 (fr) 1981-03-25
EP0025458A3 EP0025458A3 (en) 1982-01-27
EP0025458B1 true EP0025458B1 (fr) 1984-01-18

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EP19790103503 Expired EP0025458B1 (fr) 1979-09-18 1979-09-18 Dispositif pour transférer facultativement des barres profilées flexibles ainsi que des barres profilées relativement rigides, ayant des sections différentes, entre des trains de laminage et des lits de refroidissement subordonnés

Country Status (2)

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EP (1) EP0025458B1 (fr)
DE (1) DE2966554D1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1881110U (de) * 1959-02-19 1963-10-24 Kloeckner Werke Ag Vorrichtung zum umlenken von durchlaufendem stabeisen, draht od. dgl. von einem haspel auf einen anderen.
FR1328186A (fr) * 1961-07-08 1963-05-24 Verwaltungs Ges Moeller & Neum Train de laminoirs continu pour forte production, avec trains continus installés en deux lignes de laminage parallèles
DE1279591B (de) * 1962-05-28 1968-10-10 Moeller & Neumann Verwalt Ges Walzenstrasse fuer hohe Produktion zum gleichzeitigen Auswalzen verschiedener Walzgutabmessungen
US3121484A (en) * 1963-01-21 1964-02-18 Morgan Construction Co Split-level directing guide for rolling mill gathering tables
BE721896A (fr) * 1968-10-04 1969-03-14
FR2187433A1 (en) * 1972-06-14 1974-01-18 Creusot Loire Placing rolled bars onto a cooler - in appts occupying reduced space and in which the speed of the sheared bar does not exceed the rolling speed
DE2511425A1 (de) * 1975-03-15 1976-09-23 Demag Ag Weiche fuer eine draht- oder feineisenstrasse
DD129172A1 (de) * 1976-12-23 1978-01-04 Manfred Wenzel Weichenanordnung in einer mehradrigen draht-oder feinstahlstrasse

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Publication number Publication date
EP0025458A2 (fr) 1981-03-25
DE2966554D1 (en) 1984-02-23
EP0025458A3 (en) 1982-01-27

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