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
  • B21B39/004—Transverse moving
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
  • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
  • B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling

Definitions

• the present invention relates to a transport system for transporting rolling stock between at least two processing lines, and to a method for transporting rolling stock between at least two processing lines.
• WO 2009/030190 A1 discloses a device for the transfer of continuous casting slabs from a casting line to a further processing line, in which a ferry can be moved transversely in stages between parallel casting drums arranged at the same distance from one another.
• the transport system between the respective processing lines is a limiting factor for the productivity of the entire system. Only when the supply of the respective rolling stock, for example, the thin slabs, go quickly, an optimal machine cycle and optimum utilization of the rolling mill can be ensured.
• the transport system for transporting rolling stock between at least two processing lines comprises at least two ferries for transporting the rolling stock.
• the ferries are inventively designed so that the rolling stock can be passed from a ferry to at least one other ferry.
• the transfer of the rolling stock between the ferries preferably takes place in a region between two processing lines.
• the transfer takes place exactly in the middle between two spaced-apart processing lines such that the respective trajectories of the ferries are halved when using two ferries.
• the use of more than two ferries, for example, three ferries to a shortening of Cycle time contribute.
• each transfer process means a delay. This delay has to be compared to the time saved by the shorter distances of the respective ferries and the layout has to be optimized accordingly.
• the transport system preferably serves to transport rolling stock between at least two processing lines oriented essentially parallel to one another, for example between a casting line and a rolling line aligned parallel thereto.
• the ferries are preferably transversely movable, ie in a direction perpendicular to the respective processing lines.
• the pre-strip line may in particular comprise a reversing stand, so that the rolling process leads to the desired intermediate product by repeatedly passing through the forward and reverse operation of the reversing stand.
• rolling stock is to be transferred from two preprocessing lines to a rolling line, advantageously at least three ferries are used, with one respective ferry being movable in the immediate area of the respective preprocessing line, for example the pouring line, and the third ferry being movable in the area of the rolling line.
• a ferry between the first processing line and a region between the two processing lines is movable and the second ferry between the second processing line and a central region between the two processing lines movable.
• the at least two ferries are preferably arranged such that they can be moved on mutually parallel track tracks that run essentially perpendicular to the processing lines.
• the parallel trajectories are preferably spaced from each other so that the two ferries can pass each other.
• the ferries are arranged so that they can be brought into alignment with each other in order to transfer the rolling stock from one ferry to the other ferry.
• the transfer from one ferry to the next takes place using special facilities provided for this purpose at the ferries for the transfer of the rolling stock.
• the transfer takes place by means of drivable rollers on which the rolling stock rests on the ferry.
• the transfer can be carried out by simple means by suitably driving the respective rollers.
• the ferries protrudes into one of the processing lines, in particular the processing line lying outside the travel range of the ferry.
• the ferries are provided with a heater for heating the rolling stock to avoid cooling of the rolling stock.
• a heater for heating the rolling stock to avoid cooling of the rolling stock.
• the ferries preferably include transport rollers in order to be able to easily transfer the rolling stock to the ferry and to be able to transfer the rolling stock to the further ferry or to a processing line.
• the transport rollers are preferably driven electrically.
• the above object is further achieved by a method for transporting rolling stock between two processing lines. Accordingly, two ferries are provided for transporting the rolling stock, and for transporting the rolling stock from one processing line to the other processing line, the rolling stock is transferred from a ferry to another ferry.
• the rolling stock is transferred from a processing line to a first ferry, from the first ferry to a second ferry, and from the second ferry to the other processing line.
• the first ferry is moved between the first processing line and the middle between the two processing lines, and substantially simultaneously the second ferry is moved from the second processing line towards the middle between the two processing lines. Then the two ferries are aligned in the middle between the two processing lines and the rolling stock is transferred from the first ferry to the second ferry. Thereafter, the two ferries return substantially simultaneously to a substantially aligned orientation with the two processing lines.
• FIG. 1 shows a schematic structure of a conventional one
• Figure 2 is a schematic representation of the conventional structure of a transport system between two processing lines;
• Figure 3 shows the schematic structure of a transport system according to an embodiment of the present invention.
• Figure 4 shows a schematic structure of a transport system according to another embodiment of the present invention.
• FIG. 1 shows a schematic representation of a plant for producing metal strips.
• a schematically indicated slab is processed on a first processing line 10 into a sliver 100, in particular using a reversing stand 12.
• the slabs are brought to rolling temperature via a stepping furnace 110, which is connected upstream of the first processing line 10.
• the actual processing of the rolling stock in the form of the pre-strip 100 takes place in a second processing line 20, which is formed in the embodiment shown in Figure 1 in the form of a rolling train with Vorgerüstange 22.
• the first processing line 10 and the second processing line 20 are arranged substantially parallel to each other and spaced apart by a distance d. Over this distance, which corresponds to the distance d between the first processing line 10 and the second processing line 20, the rolling stock in the form of the pre-strip 100 between the two processing lines 10, 20 must be transported.
• Further processing stands, such as the finishing stands 24 and a coiler 26 are provided in the second processing line 20 and shown schematically. Since these are of minor importance to the description of the present disclosure, no further reference is made to this.
• the transport between the first processing line 10 and the second processing line 20 is made by means of a ferry 30, which bridges the distance d between the two processing lines 10, 20.
• the ferry 30 is guided on guide rails 32, which extend substantially perpendicular to the extension of the two processing lines 10, 20.
• the rolling stock in the form of the pre-strip 100 is transported accordingly from the first processing line 10 to the second processing line 20 on the ferry 30 operating between the two processing lines 10, 20.
• the ferry 30 is thereby moved transversely to the actual line direction of the processing lines 10, 20.
• the actual operation of transporting the rolled stock in the form of the pre-strip 100 from the preprocessing line 10 to the main processing line 20 takes place in that the pre-strip 100 is driven onto the ferry waiting in the starting position 300, which is waiting in alignment with the first processing line 10 , After the pre-lap 100 rests completely on the ferry 30, the ferry 30 moves along the rails 32 and transversely to the processing direction of the first and second processing lines 10, 20 to overcome the distance d between the two processing lines 10, 20.
• the ferry 30 has arrived at the end position 310 in an alignment aligned with the second processing line 20, the pre-strip 100 is transported down the ferry 30 and sent for further processing in the processing line 20.
• the ferry 30 returns from the end position 310 to the home position 300, where it is ready to receive another leader, which is then again transported over the distance d from the first processing line 10 to the second processing line 20.
• FIG. 2 illustrates this principle again.
• the ferry 30 moves here transversely to the main processing direction of the two processing lines 10, 20 to overcome the distance d between the two substantially parallel processing lines 10, 20.
• the following cycle for the transport process of the rolling stock results from the one processing line 10 to the other processing line 20:
• the rolling stock is transported in the form of a Vorbandes on the in the starting position 300, in alignment with the processing line 10, waiting ferry.
• the pre-band is completely on the ferry 30, so that the ferry can start its cross travel from the first processing line 10 to the second processing line 20.
• the distance d of 90 m for example, it takes 120 seconds.
• the ferry 30 has arrived at the end position 310 aligned with the second processing line 20, the pre-band is output to the processing line 20.
• the ferry 30 is then, after the rolling stock has completely left the ferry 30, again moved back to the starting position 300, in alignment with the first processing line 10.
• the ferry can again record a new rolling stock. This results in a cycle time of 320 seconds.
• FIG. 3 shows a transport system according to the present disclosure.
• two ferries 30, 34 are now arranged. It moves the first ferry 30 between the first processing line 10 aligned with the starting position 300 and a lying between the two processing lines 10, 20 transfer position 320.
• the second ferry 34 moves between the two processing lines 10, 20 transfer position 320 and the end position 310, in which the second ferry 34 is aligned with the second processing line 20.
• the transfer position 320 is on the center line between the two processing lines 10, 20. Accordingly, the ferry 30 between the starting position 300 and the transfer position 320 must cover a distance of d / 2 and the second ferry 34 between the Transfer position 320 and the end position also cover a distance of d / 2.
• the transfer position 320 may be positioned in any other position between the two processing lines 10, 20, depending on the particular requirements of the plant. The distance to be overcome d between the two processing lines 10, 20 is still divided into two sections, but need not be the same length.
• the Vorband is from the first processing line 10 on transported in the starting position 300 in alignment with the processing line 10 waiting ferry 30.
• a transfer time of 40 seconds is again assumed.
• the ferry 34 which is in alignment with the second processing line 20 in the end position 310, can likewise transmit a preliminary strip already present on this ferry 34 to the second processing line 20 within 40 seconds.
• the ferry 30 begins to move to the transfer position 320 in the middle between the two processing lines 10, 20.
• more than the two ferries 30, 34 shown in the embodiment shown in FIG. 3 may be used. It is essential here to take into account the respective transfer times for the transfer of the rolling stock between the individual ferries.
• the ferry 35 allows passage of thin slabs from the left to the right of the processing line 20, that is, in the direction of transport within the processing line 20 relative to the final position 310. While the ferry 34 is picking up the pre-strip 100 from the first processing line 10, the ferry 35 are extended laterally out of the processing line 20 to allow the ferry 34 to enter the end position 310 within the processing line 20.
• the ferries 30, 34 are preferably heated and include in particular a gas firing, oil firing or even more preferably an electric heater.
• the heater serves to keep the rolling stock at rolling temperature.
• the electric heating can also be designed as induction heating or radiant heating.
• the ferries 30, 34 may in particular be designed as ferry cars, which consist of a steel structure, which is lined with refractory material.
• a roof may be provided on the respective ferries, which can be removed for maintenance purposes in segments, for example by means of a hall crane. Doors in the ferries minimize the energy loss within the ferry, and in particular, a temperature loss of the recorded prongs or slabs.
• Bottom flaps in the ferries 30, 34 may be provided which are pneumatically actuated from time to time to remove scale falling on the ferry floor.
• the ferries 30, 34 may be electrically powered and move on railways. Of course, any other bearings or designs of ferry cars are conceivable, as long as they fulfill the above-mentioned functions. Sensors are preferably provided which monitor the position and orientation of the ferries 30, 34. Furthermore, hydraulically operated locks of the ferries may be provided in the home position 300, the transfer position 320, and the end position 310 to prevent slipping or shifting of the respective ferries 30, 34 during delivery of the respective pre-belts or slabs.
• the pre-bands are moved on the ferries 30, 34 with heat-resistant rollers. These rollers are preferably not water-cooled in order to keep the energy loss and in particular the temperature loss of the pre-bands or slabs in the ferries 30, 34 particularly low. By dispensing with water cooling of the rollers can be dispensed with a complex cooling water trailing cable.
• the rollers provided on the ferries 30, 34 are preferably each equipped with a motor, which can be driven and synchronized by frequency converters.
• the travel speed for the pre-strips or slabs is preferably between 0 and 60 m per minute.
• FIG. 4 shows a further embodiment of a transport system, but this time with two preprocessing lines 10, 10 'and a central processing line 20.
• the two preprocessing lines 10, 10' may, for example, be two casting lines and the processing line 20 a rolling line.
• ferries 30, 30 'and 34 are provided, the two ferries 30, 30' respectively from a starting position 300, 300 ', which are respectively aligned with the processing lines 10, 10' aligned, to a transfer position 320, 320 'are movable.
• a rolling stock received on each of the ferries 30, 30' can be transferred to the ferry 34, which is then transferred to the end position 310 in alignment with the processing line 20.
• the ferry 34 oscillates between the transfer position 320, the end position 310 and the other transfer position 320 '.
• here is another (fourth) ferry 34 ' is provided, which is set in brackets in Figure 4. Accordingly, the ferry 34 only needs to be reciprocated between the transfer position 320 and the end position 310, and the ferry 34 'only between the transfer position 320' and the end position 310. In order to prevent a collision of the ferries 34 and 34 ', these are operated out of phase, so if the one ferry 34, for example, at the transfer position 320, the other ferry 34' is in the final position 310. When the ferry 34 'at the transfer position 320 ', the ferry 34 is in the end position 310. In this way, a further shortened clock for loading the processing line 20 can be achieved.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Metal Rolling (AREA)
• Intermediate Stations On Conveyors (AREA)

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Citations (7)

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• 2011
  • 2011-01-26 DE DE201110003146 patent/DE102011003146A1/de not_active Withdrawn
• 2012
  • 2012-01-26 EP EP12708730.2A patent/EP2667983B1/de active Active
  • 2012-01-26 RU RU2013139175/02A patent/RU2550442C2/ru active
  • 2012-01-26 WO PCT/EP2012/051217 patent/WO2012101210A1/de active Application Filing
  • 2012-01-30 TW TW101102797A patent/TW201235125A/zh unknown

Patent Citations (7)

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