EP1236522A2 - Vertical rolling stand for use in a hot rolling mill line for the parallel-simultaneous production of rods or wires - Google Patents

Abstract

Vertical multi-wire mill stand for hot rolling mills for simultaneous parallel production of a plurality of bars or wires (b1, b2, ... bn) with vertical and horizontal rolling means for continuous hot rolling thereof, said vertical rolling means comprising a number of vertical pairs of rolling rolls, at least corresponds to the number of said strips / bars / wires to be rolled with two rows of staggered pairs of rollers; <IMAGE>

Description

The present invention relates to a vertical Roll stand for hot rolling plants for parallel simultaneous production of rods or wires.

The facility, which includes said scaffolding, is also Subject of the present invention.

The system advantageously sees a connection with the Continuous casting line in front.

Technical part

The application takes place in a continuous casting and hot rolling plant for parallel simultaneous flow generation of steel bars or wires.

The system method is designed for parallel simultaneous generation of metal bars or wires from one Continuous casting and for the parallel flow hot rolling of said Continuous casting.

Older technology

Are in accordance with the current state of the art different production methods for continuous casting and that Hot rolling known.

The most common method concerns casting and flow rolling of billets that gradually rolled thinner until the metal rod or wire reaches the desired has final cross section.

With small cross sections, it is understood that the work becomes very costly, both because of the working hours as well as the complexity and cost, so that the rolling speed to ensure productivity must be increased continuously and continuously, whereby the value of 30 m / sec. with straight bars or 100 m / sec. with coiled metal wire is exceeded by far.

The increase in speed has limits that are not easily overcome; so if the maximum limit is almost reached, is a significant further increase no longer achievable unless an unreasonable one Increase in production and maintenance costs.

Experiments in this direction have been made for the parallel rolling process, based on the continuous casting of billets.

The parallel rolling process has not been successful can, despite the numerous proposed solutions, and has hardly been used due to its complexity.

The need to intervene on a line for example due to jamming, the rolling on the second line practically impossible or at least very much difficult.

Currently, billets (not continuous casting) are used the split rolling process applied: This solution consists in the production of two bars from a previous one Machining and rolling the billet to make Rolling material with an increasingly smaller cross section and thinner shape for the purpose of separating the two bars advanced rolling stock that is rotated 90 ° and up is rolled to final strength (JP-A-60-130401).

It is also possible to have four steel bars followed by two Splits starting simultaneously on the same rolling base from the same stick.

This process starts with a stick (e.g. 160x160 mm) from an oven with an hourly production of, for example, 37 tons / h.

The rolling speed (3 m / min. - 0.05 m / sec.) Is from does not support the rolling stands and causes damage and failures in the rolling means, not least also due to the overheating of the rollers.

In addition, starting from a stick of 160x160 mm for the production of a round steel of 8.5 mm diameter about 18 roll stands necessary.

In order to be productive, the speed of the in first billet incoming billet about three times be higher than the casting speed.

It can also be used to produce metal wire coils (also horizontally arranged) winding machines e.g. of the type "EDEMBOR" for metal wire with a diameter of <5.5 mm can be provided using multiple lines.

In the technology for the production of wire <5.5 mm is one very high speed required, e.g. starting from a standard stick (150x150 mm) with an initial speed of 0.1 m / sec. around a 3 mm thick wire 300 m / sec. necessary at the exit, i.e. Speeds that are very difficult in hot rolling mills or are practically impossible to achieve (metallurgical problems and overheating due to this speed other unsolved problems, not to mention the unreasonable high costs).

As a result, the roll stands must have more than one Continuous casting line are supplied (at least 2 or 3 Lines).

Another disadvantage of the currently high speed is the increase in waste due to scooping on both ends of each rod made.

An object of the invention is to use metal bars or wires in the same amount by hot rolling, but at a lower rolling speed, also with a Cross section of <5.5 mm, without the problems described manufacture.

De-4009861A (SMS) refers to a rolling mill for Manufacture of steel bars, one directly from a system with more than one continuous casting line.

• in einer Lösung mit einer einzigen Walzstraße;
• in einer alternativen Lösung mit einer direkten Vielzahl von Walzstraßen.

The outputs are led to a heating furnace and then rolled at right angles:

• in a single rolling mill solution;
• in an alternative solution with a direct variety of rolling mills.

However, this solution has the same, already described above Problems on.

The publications and summaries of Japanese Patents JP 57193205 (21.11.82), Volume 7, No. 44 (M-195), February 22, 93 and JP 57193205 refer to a Rolling mill of a large, continuously shaped flat bar for the production of a large number of rectangular cross sections, which are arranged diagonally and with a thin line the opposite angles connected to each other are. This is done in the longitudinal direction by the calibration rolling means for the successive production of bars (not in the flow process from the continuous casting line).

This flat bar is a primary rolling in a prescribed Intermediate strength subjected to which one Intermediate semi-finished product is produced. To another Point in time and in another processing line heated this intermediate semi-finished product with the help of Provide pre-rolling means with longitudinal grooves and then split and cut into separate, rectangular bars.

These rectangular bars are another one at a time Leveling process for the production of the end product subjected.

This solution is a discontinuous forming solution of a material using a variety of separate Processing lines, which is a continuous casting and Hot flow rolling mill acts.

The discontinuous solution described above can So do not solve the problems presented.

In patent PCT / IT97 / 00013 (EP-0876225) named the S.I.M.A.C Spa. (a company of the current applicant) becomes a method and corresponding hot rolling mill Flow generation of rods or wires outlined.

This discovery describes a hot rolling mill for flow production of rods or wires, in which the from a rectangular cross section resulting from a continuous casting by rolling and cutting into said rods or Wires are formed.

This solution provides a means with mill stands for the purpose Forming of a rectangular, emerging from the continuous casting flat cross section in a multiple sausage mold and then separating them into a plurality of separate ones Strips in the form of bars or wires for feeding into a rolling mill.

• erste Walzmittel zum Walzen des besagten Stranggusses in Flachstäbe aus dem vorgeschobenen Material unter zunehmender Verminderung des Querschnitts;
• zweite Walzmittel mit gegenüberliegenden gerillten Rollen zwecks Ausformung eines längs gerillten Flachstabes beim Vorschub.

This solution provides an endless continuous casting line which continues into a hot rolling line until the product is finished (bars or metal wire) and comprises:

• first rolling means for rolling said continuous casting into flat bars made of the advanced material with an increasing reduction in the cross section;
• second rolling means with opposed grooved rollers for the purpose of forming a longitudinally grooved flat bar during feed.

• vor den besagten ersten Walzmitteln:
  • Stranggußmittel vor, die dazu dienen, ständig einen Flachstab von weniger als 80 mm, vorzugsweise ca. 50 mm, Stärke zu erzeugen und
  • einen Entzerrungsofen mit Induktionstunnel vor zur weiteren Erhitzung des vorgeschobenen Flachstabes aus den besagten Stranggußmitteln, um den Flachstab auf Walztemperatur zu halten;
  • eine seitliche Begrenzungswalzung mit vertikalen Rollen, um den vorgeschobenen Flachstab auf einer exakten, gleichbleibenden Breite zu halten;
• nach den besagten zweiten Walzmitteln sieht diese Lösung vor:
  • Splittungs- oder Längsschnittmittel zur Trennung des besagten Flachstabes in eine Vielzahl von Streifen oder Stangen;
  • Stangenrotationsmittel zur Rotation der besagten Vielzahl von Streifen um 90°;
  • Zurichtungswalzmittel mir gegenüberliegenden gerillten Rollen zur fortlaufenden, parallelen Erzeugung von zugerichteten Stangen oder Drähten;

Sees this solution

• before said first rolling means:
  • Continuous casting agents that serve to continuously produce a flat bar of less than 80 mm, preferably about 50 mm, and
  • an equalization furnace with an induction tunnel in front for further heating the advanced flat bar from said continuous casting means in order to keep the flat bar at rolling temperature;
  • a side boundary roll with vertical rollers to keep the advanced flat bar at an exact, constant width;
• after the said second rolling means, this solution provides:
  • Splitting or slitting means for separating said flat bar into a plurality of strips or bars;
  • Bar rotation means for rotating said plurality of strips through 90 °;
  • Straightening rolling means opposite to me grooved rolls for the continuous, parallel production of prepared rods or wires;

beginnend mit einem Strangguß zur Erzeugung eines dünnen Flachstabes;

Flachwalzmittel zur Verdünnung des besagten Flachstabes, bis aus diesem ein großer Flachstab mit einer Stärke geworden ist, die in etwa der des breitesten Querschnitts der zu erzeugenden Endproduktstange entspricht, während die Breite des großen Flachstabes mindestens einem Vielfachen des besagten breitesten Querschnitts der zu erzeugenden Stange entspricht;

• besagter großer Flachstab wird mittels gegenüberliegender, gerillter Rollen weiter gewalzt, um die gegenüberliegenden verformten Oberflächen mit Rillen zu versehen, um den Querschnitt einer Vielzahl von miteinander verbundenen Ovalen oder Rhomben zu erhalten;

besagte Ovale oder Rhomben werden am Punkt der geringsten Dicke, in dem sie miteinander verbunden sind, längs getrennt, wodurch sich ein Streifenbett im Fließvorschub ergibt, in welchem die jeweils zu erzeugenden Metalldrähte oder -stangen entstehen,

• nach der Trennung der besagten Stangenquerschnitte und vor dem endgültigen Zurichtungswalzen werden die Streifen simultan um 90° gedreht und weiter gewalzt.

The document advantageously relates to a method of producing rolled bars or wires with a hot flow rolling mill, which has the characteristics of the solution set out above and works as follows:

starting with a continuous casting to produce a thin flat bar;

Flat rolling means for thinning said flat bar until it has become a large flat bar with a thickness approximately equal to that of the widest cross section of the end product bar to be produced, while the width of the large flat bar corresponds to at least a multiple of said widest cross section of the bar to be produced ;

• said large flat bar is further rolled by means of opposing grooved rollers to groov the opposing deformed surfaces to obtain the cross section of a plurality of interconnected ovals or rhombuses;

said ovals or rhombuses are longitudinally separated at the point of smallest thickness in which they are connected to one another, resulting in a strip bed in the flow feed, in which the metal wires or rods to be produced are formed,

• after the separation of the said bar cross-sections and before the final dressing rolling, the strips are simultaneously rotated through 90 ° and rolled on.

If round cross-sections are required, it is recommended itself, initially oval cross sections with longitudinal ridges in produce lateral counterposition to wings and this then turn 90 ° and roll again to to get a round cross section without burrs or wings.

In this way, removal is advantageously omitted of ridges or wings.

Finally, the strip can be cut into bars, normalized, be cooled, packaged and bundled like this usually done.

An alternative solution is to strip the winding machines feed (production of coiled metal wire).

Said longitudinal section is made by means of opposite Cutting rolls with offset grooves or using fixed, also made opposite cutting knives, disc-shaped knives are not excluded.

Disadvantages of the solution described above

The need for pre-rolling the flat bar to Change of the rectangular shape to oval or rhombic, longitudinally or laterally connected cross sections are considered complicated and expensive.

Rotating devices are also complicated and expensive, where the separated strips are rotated by 90 ° to be caused by the separation (cut) Eliminate longitudinal burrs.

In addition, pre-rolling of the continuous casting material produces one-sided longitudinal fibers before separation into strips in the advanced material, which is its uniformity affect.

This lack of uniformity in the structure of the rolled Material can reduce its strength.

The object of the present invention is also the above to solve the problems described.

Essential principle of the invention

These and other objects of the invention are achieved according to the invention by means of a vertical rolling stand for flow rolling plants for the simultaneous simultaneous production of a multiplicity of bars or wires with at least vertical and horizontal rolling means for the continuous hot rolling thereof, said vertical rolling means comprising at least a certain number of vertical rolling roller pairs, which corresponds at least to the number of said strips / rods / metal wires to be rolled, characterized in that
in said vertical rolling means said number of vertical pairs of rollers is divided into at least two lines, each said vertical pair of rollers of the first line being offset from the nearest vertical pair of rollers of the second line, so that one of said lines is by means of a vertical pair of rollers of said first line is rolled and the nearest second bar / wire is guided laterally from said vertical pair of rollers of said first row and is rolled by the corresponding offset vertical roller pair of the second line.

With this solution, a multi-wire / multi-bar hot flow rod rolling production can in a very compact system will be realized.

The connection is advantageously in the system between continuous casting and flow punch of the continuous casting material used, this with a with pinch rollers equipped traction means is provided to said Forcing continuous casting material through the flow die, so this is the shape of a variety of sausages occupies, whose shape can be round, oval or polygonal.

• hat die besagte Fließformstanze ein einziges Loch zur Erzeugung eines Flachstabes in besagter Wurstform, wobei jede Wurst seitlich, entlang ihrer Zwischenfläche, mit der anderen Wurst verbunden ist;
• ein durchlaufendes Längs-Multisplittungsmittel zur Teilung des besagten Flachstabes mittels Längsschnitten in die besagten zu walzenden Streifen.

In a first solution

• said flow die cutter has a single hole for producing a flat bar in said sausage shape, each sausage being connected laterally along its interface to the other sausage;
• a continuous longitudinal multi-splitting means for dividing said flat bar by means of longitudinal cuts into said strips to be rolled.

In a further advantageous solution, said Flow form punch a variety of aligned, each separate forming holes to directly one To produce a large number of said strips / bars to be rolled.

In this way, the continuous casting and flow rolling plant is in capable of continuously trimmed rods or wires to create a single endless working line without the The complexity of the solutions described above and without pre-rolling the continuous casting material and it would be necessary to turn the separated rods through 90 °.

Detailed description of the preferred solutions

These and other advantages result from the following Description of the preferred solutions using the accompanying drawings, the details of which are illustrative only serve, but no restrictive effect have.

1 shows a schematic view of the forming process, starting from the continuous casting and rolling of the material until the end of the plant.

1A shows a top view of the line from FIG. 1.

Figures 1M and 1MA are alternative solutions to the Figures 1 and 1A, the continuous casting with a multi-channel continuous casting mold for direct generation of parallel separate strips / rods / wires is made (multiple rods / wire or multiple strand casting).

1.1 shows a schematic partial view of the line of FIG 1 above, showing the splitting means 4, the vertical roll stands 6 and the horizontal roll stands 7th

Figure 1.1A shows a modified solution using of continuous casting in separate lines (multiple continuous casting,) according to Figures 1M, 1MA.

Figures 2, 2a, 2.1, 3, 3a, 3.1, 3a.1, 4, 4.1, 5, 5.1, 6, 6.1 show schematic representations of different ones Forms (cross sections) of the continuous casting into a grooved Flat bar (or multiple sausage) for further continuous Longitudinal separation into strips and for subsequent vertical and horizontal hot rolling.

FIG. 7 shows a schematic top view according to FIG. 1 showing the splitting agent 4 after the continuous casting 10th

Fig. 8 shows the schematic elevation of the continuous casting plant up to the flow forming dies for the continuous shaping of the Stranggußmaterials.

9 illustrates a top view of the modified flow die cutter for the direct, continuous generation of parallel separate strips, bars, rolled products which none of the said splitting agents required is.

Fig. 10 represents a vertical, transverse and axial section of the Flow form punch 10.

• Zugmittel mit Quetschrollen 2 nach der besagten Fließformstanze 10, um das Gußmaterial fortlaufend aus der Fließformstanze herauszuziehen;
• vertikale Walzgerüstmittel 6 und
• horizontale Walzgerüstmittel 7.

11 shows a schematic top view of the following parts:

• Traction means with pinch rollers 2 after said flow punch 10 in order to continuously pull the casting material out of the flow punch;
• vertical mill stand 6 and
• horizontal roll stand 7.

Figures 12-15 are schematic vertical views Roll stand with staggered pairs 6 from above, in Frontal profile, in the side profile.

Figures 11A and 15A represent a modified solution of Figures 11 and 15, in which a vertical, offset roll stand is shown, in which in a simplified and compact solution the transfer of a single motor with single drive axis to the rolling means by means of Z-shaped toothed transmission gears he follows.

Figures 16 to 18 each show a schematic Top view, a front and a side view of the horizontal Roll stand 7.

With reference to the figures, it can be seen that
number 1 is used to identify the continuous casting agent;
number 10 identifies the flow die of the continuous casting means 1;
number 11 identifies the continuous casting line;
number 2 identifies the traction means with the traction and feed rollers of the continuous casting material;
number 3 identifies the emergency cross-cutting means and 3A the emergency cross-storage of the cut material;
number 5 indicates a post-heating tunnel means which brings the fed material to homogenization and hot rolling temperature;
number 4 identifies the longitudinal shear means for separating (splitting) the continuously shaped flat bar (multiple sausage shape) into "n" strips or bars lying side by side;
the numbers 6 and 6A identify the vertical roll stand with at least two staggered, vertical roller pair lines divided into "n" (n = number of pairs per line);
numbers 7 and 7A indicate a horizontal roll stand with "n"grooves;
number 8 identifies the shear means of the rolled bars;
number 9 identifies the storage and packaging means for the cut bars as well as alternative packaging means for rolled and wound wire.

As is known from the current state of the art, can after hot rolling, flow winding agent for each metal wire e.g. a multi-wire winding machine is provided his.

The rest is done using flying scissors with a pair of rotary knives scrapped.

As an alternative to winding on spools, the rolled Material to be delivered in bars; here is a flying scissors (with opposite rotary knives) System for the transverse displacement of the bars on a Cooling plate and final feed for packaging used.

i. Stranggußmitteln zur fortlaufenden Lieferung von Stranggußmaterial zwecks Erzeugung einer Vielzahl von Walzstreifen oder -stangen (b1, b2, ...bn) mittels Fließformstanzmitteln 10 und

ii. vertikalen Walzgerüsten 6, welche mindestens eine gewisse Anzahl an vertikalen Walzrollenpaaren umfassen, die der Anzahl der besagten Streifen/Stangen/Drähten entspricht; wobei die Anzahl der vertikalen Walzrollenpaare in mindestens zwei Linien 61, 62 unterteilt ist, wo jedes besagte vertikale Walzrollenpaar der ersten Linie 61 versetzt gegenüber dem nächstgelegenen vertikalen Walzrollenpaar der zweiten Linie 62 angeordnet ist, damit einer der besagten Streifen/Stangen/Drähte mittels eines vertikalen Walzrollenpaares der besagten ersten Linie 61 gewalzt wird und der nächstgelegene zweite Streifen/Stange/Draht seitlich vom besagten vertikalen Walzrollenpaar der besagten ersten Linie 61 entlanggeführt und vom entsprechenden, versetzt angeordneten vertikalen Walzrollenpaar der zweiten Linie 62 gewalzt wird;

iii. horizontalen Walzmitteln 7 mit einer Anzahl von horizontalen Walzrillen, die mindestens der Anzahl der parallel zu walzenden Streifen/Stangen/Drähte entspricht, damit diese Streifen/Stangen/Drähte horizontal gewalzt werden können.

As previously stated, this invention relates to a continuous casting and hot rolling flow line for the simultaneous parallel production of a plurality of metal strips / bars and wires by providing:

i. Continuous casting means for the continuous delivery of continuous casting material for the purpose of producing a large number of rolled strips or bars (b1, b2, ... bn) by means of flow-forming means 10 and

ii. vertical roll stands 6, which comprise at least a certain number of vertical roll pairs, which corresponds to the number of said strips / rods / wires; the number of vertical roller pairs being divided into at least two lines 61, 62 where each said vertical roller pair of the first line 61 is offset from the nearest vertical roller pair of the second line 62 so that one of said strips / bars / wires is vertical Roller pair of said first line 61 is rolled and the nearest second strip / bar / wire is passed laterally from said vertical pair of roller rollers of said first line 61 and is rolled by the corresponding staggered pair of vertical rollers of second line 62;

iii. horizontal rolling means 7 with a number of horizontal rolling grooves, which corresponds at least to the number of strips / rods / wires to be rolled in parallel, so that these strips / rods / wires can be rolled horizontally.

The flow die 10 of the continuous casting material is with a equipped with traction rollers to pull the said continuous casting material through the flow punch 10 to force through and the shape of a variety of sausages to take in, their shape round, oval or polygonal can be.

hat die besagte Fließformstanze 10 ein einziges Loch zur Erzeugung eines Flachstabes in besagter Wurstform, wobei jede Wurst seitlich, entlang ihrer Zwischenfläche, mit der anderen Wurst verbunden ist;

wird ein durchlaufendes Längs-Multisplittungsmittel zur Teilung des besagten Flachstabes mittels Längsschnitten in die besagten zu walzenden Streifen (b1, b2, b3, ...bn) zur Verfügung gestellt 2.

In one solution:

said flow die cutter 10 has a single hole for producing a flat bar in said sausage shape, each sausage being connected laterally along its interface to the other sausage;

a continuous longitudinal multi-splitting means is provided for dividing said flat bar by means of longitudinal cuts into said strips to be rolled (b1, b2, b3, ... bn) 2.

In another solution, said flow punch has 10 a variety of aligned, each one from the other separate molding holes to directly fit a variety of said strips to be rolled (b1, b2, b3, ... bn).

The parameters for the feed rate are included far below the rolling speed of an individual Pole.

The cast is, for example, in a large flat bar Form of a multiple sausage or a grooved flat bar (e.g. 50x800 mm) at a speed of 0.1 m / sec. or directly in a variety of parallel Strips / rods using the said die-cutting means advanced.

For example, 54 bars with 8.5 mm diameter at a feed rate of approx. 1.25 m / sec. and a production output of approx. 110 Tons / hour are generated.

This means that the series of bars so produced (or rectangular, L-shaped or T-shaped rolled products) cut to 6 or 12 m trade length could. In this case, the rods could be directly on one Cooling plate to be unloaded.

A forced coolant before the end of the production line can be delivered.

At the exit of the cooling plate, bundles of rods are formed are transported to storage after binding.

To produce the aforementioned rod wire, the advanced material at the exit from the last finishing stands conveyed directly on winding machines, which simultaneously wind all wires on spools.

This means that it is with the metal wire rods described above of 8.5 mm diameter there are 54 coils that instead of two winding machines on just one winding machine can be arranged with only one axis, wherein one coil next to the other by suitable ring-shaped Distance means separated, located.

The coils are then known from that of coil holders Transfer technology.

For example, if the casting weight is 50 tons, 54 coils of 925 kg each are produced, and each is located on the same winding machine.

Obviously the number can be horizontal and vertical Scaffolds may be different, the number of the desired reduction in cross section and Dressing depends.

Advantageously, when using this compact Roll stands significantly reduce the scope of the entire Plant achieved.

It is understood that this system is mainly for the steel processing in large flow plants with a very high production output is provided, but also in comparatively small flow generation plants e.g. at Precious metals such as gold, silver, platinum or gold alloys can be used.

Obviously, the vertical roles of the vertical Roll stands are driven by a single motor.

The strips or bars in the rolling line are marked with b1, b2, b3, b4, b5, b6, b7, b8, ...

Further details can be seen in FIGS. 8-18.

Fig. 8 shows the preferred solution of the continuous casting system with the corresponding flow form punch 10, the flow feed line of the material is marked with 11.

In this system, the container with the number 101 of the melt, which is characterized by a movable Transmission structure 1011, 10111, 1012 as from the older one Technology is known, is supported.

There are intermediate continuous casting fluxes 102, 1031031 provided by a side bridge structure 104 be worn.

Said flow die punch 10 is made of movable lever means 1001, 1002, 1003, 1004, 1005, 1006 with motor means 1007 supported.

Fig. 10 shows the curved line (b) of the flow die 10. This has two separate cooling chambers c1, c2, in which water circulates at different temperatures (e1, e2). This solution serves for better control of the Stranggußparameter.

In the solution shown in Fig. 9 there are 4 continuous casting lines provided without that shown in Fig. 7, point 4 Slitting tools are required.

Of course, two or more of the above can be used Continuous molding agents are supplied.

For example, in Figures 15-18, eight Stripes / flow feed lines b1 ... b8 shown.

FIGS. 12-15 show a vertical multi-line rolling stand, where two rows of roller rolls 61, 62 are provided are; where each line has a drive axle 610, 620 is driven by a single motor M6, whereby each pair from a cone gear 611 to a roller wheel and from this by means of a cylinder gear to the second pair is driven.

An alternative solution is to transfer the rotation by means of a first line of rollers to the closest one second roller pair line 61 'with 62', 62 'with 62' ', 622 with 61 'etc. in constant Z-shaped toothing with one other (Fig. 23) possible. See Figures 19, 20, 21, 22, 23, in which a single motor shaft R1 is used, which the movement of the single motor M6 by means of a cone gear R2 transfers to a number of transfer rollers RR, over the respective motor shafts (TR) with the offset Pair of rollers 61, 62 are connected.

Figures 16-18 show the features of a horizontal Roll stand 7 with the respective drive axle pair 710, 720 powered by a single M7 engine and have an axis for each rolling line 71, 72.

In Fig. 11, numeral 2 is a pulling device Draw rollers marked, which a pair of rollers 21, 22nd used, driven by a single electric motor M2 becomes.

Of course it is when using a flow die cutter 10 for producing separate strips b1, b2, ... bn not necessary, the said longitudinal splitting means 4 to use.

In Figures 1 and 1M, the number b1 is the diversion of the advanced material to be stored for the purpose of guarantee a constant feed rate characterized.

After the rolling process there is a heat treatment in tunnels (TH) provided on the line.

After cutting 8, a wire rod line (WRL) and a winding bearing (WM) can be provided.

The end product 9 can be in the form of coils or rods available.

Advantageously along the said system, in front of the said hot rolling means 6, 7, 6A, 7A and after them A wire loop / rod (BS) is provided to compensate of different speeds when Continuous casting upwards 101, 102, 10, 11.2 ... 5, ... and the Flow treatment, cutting and storage down TH, 8, 9 to enable.

When using 2, 3 rolling lines to produce The rolling process becomes metal wire of <5.5 mm enables the speed for the finishing mill stands approx. 60/70 m / sec. is, i.e. by 5 times less than the 300 required for a single line m / sec. is.

Taking into account the multitude of production lines the proposed solution is definitely advantageous. Of course, with the solution according to the invention any type of metal wire or bar size without any Restriction. The system is compact and space-saving.

Of course, two continuous hot rolling mills can go down from the continuous casting be provided for maintenance work and the exchange of roles for different productions to be able to make without stopping the continuous casting have to.

Claims (7)

Vertical multi-wire mill stand for continuous hot rolling plants for the simultaneous simultaneous production of a plurality of bars or wires (b1, b2, ... bn) with vertical and horizontal rolling means for the continuous hot rolling thereof, said vertical rolling means comprising at least a number of vertical pairs of rolling rolls, at least that Corresponds to the number of said strips / rods / metal wires to be rolled,
characterized in that : in said vertical rolling means (6) said number of vertical roller pairs is divided into at least two lines (61, 62), each vertical roller pair of the first line (61) being offset from the closest vertical roller pair of the second line (62) , so that one of said strips / rods / wires is rolled by means of a vertical pair of vertical rollers of said first line (61) and the nearest second strip / rod / wire is guided laterally from said vertical pair of vertical rollers of said first line (61) and offset from the corresponding one arranged vertical roller pair of the second line (62) is rolled. Flow hot rolling mill with vertical stand according to claim 1, characterized in that it comprises a continuous casting line with flow die (10) for the continuous casting material connected to a traction means with pull rollers (11, 2) in order to force said continuous casting material through the flow die (10) so that this takes the form of a plurality of rods (b1, b2, b3, ... bn), the shape of which can be round, oval or polygonal. Flow hot rolling mill according to the preceding claims, characterized in that said flow die cutter has a single hole for producing a flat bar in said sausage shape, each sausage being connected laterally along its interface to the other sausage; in which continuous longitudinal multi-splitting means (4) are provided for dividing said flat bar by means of longitudinal cuts into said hot-rolled strips (b1, b2, b3, ... bn). Flow hot rolling plant according to the preceding claims 1 and 2, characterized in that the said flow form punch has a plurality of aligned, respectively separate forming holes (10) in order to directly direct a plurality of said strips / rods / wires (b1, b2, b3) to be rolled , ... bn). Flow hot rolling system according to the preceding claim, characterized in that said forming holes (10) in said flow form punch are curved (b). Flow hot rolling system according to the preceding claims, characterized in that said flow form punch has two separate water-cooled chambers (c1, c2), with separate water circulation at different temperatures (e1, e2). Flow hot rolling system according to the preceding claims, characterized in that a loop of the advanced material (bs) is provided along the said system, in front of the hot rolling means (6, 7, 6A, 7A) and after them, in order to compensate for different speeds during continuous casting upwards (101, 102, 10, 11.2 ... 5, ...) and flow treatment, cutting and storage downwards (TH, 8, 9).

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