EP3956082A1 - Kaltwalzwerk mit alternativer zuführung eines stahlbandes über zwei verschiedene wege - Google Patents
Kaltwalzwerk mit alternativer zuführung eines stahlbandes über zwei verschiedene wegeInfo
- Publication number
- EP3956082A1 EP3956082A1 EP20725082.0A EP20725082A EP3956082A1 EP 3956082 A1 EP3956082 A1 EP 3956082A1 EP 20725082 A EP20725082 A EP 20725082A EP 3956082 A1 EP3956082 A1 EP 3956082A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel strip
- decoiler
- roll stand
- steel
- cold rolling
- 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.)
- Granted
Links
Classifications
-
- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B1/30—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 plates, strips, bands or sheets of indefinite length in a non-continuous process
-
- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- 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
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
- B21B39/08—Braking or tensioning arrangements
- B21B39/084—Looper devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
-
- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B2001/221—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 plates, strips, bands or sheets of indefinite length by cold-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0064—Uncoiling the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/12—End of product
- B21B2273/14—Front end or leading end
Definitions
- the present invention is based on a Meltiol ren for a cold rolling mill
- the first steel strip is fed to the roll stand, starting from a first decoiler, via a first path and is not heated during the feeding to the roll stand,
- the second steel strip is fed to the roll stand, starting from the first decoiler, via a second path.
- the present invention is also based on a cold rolling mill
- the cold rolling mill having a roll stand, by means of which a first steel strip is rolled immediately after the first steel strip has been uncoiled from a first decoiler and a second steel strip is rolled from the first decoiler immediately after the second steel strip has been uncoiled,
- the cold rolling mill has a first path via which the first steel strip, starting from the first decoiler, can be fed to the rolling stand,
- the cold rolling mill having a second path, via which the second steel strip, starting from the first decoiler, can be fed to the rolling stand.
- Electrical sheet is a relatively thin steel sheet, which - especially to improve the magnetic properties - can contain a relatively high proportion of silicon.
- sheet metal of this type there is a risk of strip tears during cold rolling.
- the strip tears are the result of edge tears that can occur during cold rolling.
- the cause of the edge cracks are the brittleness and fragility of the
- brittleness and fragility of sheet steel with a high proportion of silicon depends heavily on the temperature of the steel strip during cold rolling. In particular, it is known that a higher temperature leads to a significant decrease in brittleness and thus to a reduction in the risk of tape tears.
- the temperature of the steel strip increases due to the forming work introduced into the steel strip.
- the temperature of the steel strip often only corresponds to the ambient temperature, i.e. typically around 20 ° C.
- Band heating device in the form of induction heating to assign.
- the temperature temperature of the steel belt is raised, for example in a range from approx. 80 ° C to approx. 160 ° C. This significantly reduces the brittleness of the steel strip, so that there is a considerably lower risk of the strip breaking. Furthermore, the rolling at a higher rolling speed can be followed thereby, whereby the productivity of the continuous Tan demée is increased.
- the induction heating requires a considerable amount of space. Due to the system layout of a continuous tandem train, it is usually easily possible to arrange a corresponding induction heater in front of the first roll stand of the continuous tandem train.
- the object of the present invention is to create possibilites by means of which brittle and fragile steel strips can be rolled in a discontinuous cold rolling mill without danger or at least with a significantly reduced risk of strip tears and yet the dimension length at least for steel strips, which also without prior The warming does not tend to tear the tape, can be kept low.
- the second steel strip is heated while being fed to the roll stand, the second path being longer than the first path.
- the decoiler from which the second steel strip is unwound can be the first decoiler. Alternatively, it can be a second uncoiler different from the first uncoiler.
- the second steel strip is preferably heated by means of induction heating.
- induction heating is simple, effective, inexpensive, reliable and robust.
- the heating device is placed on the second steel strip, so that the heating device is seen in the transport direction of the second steel strip at a section of the second steel strip that has already been unwound at this point in time, and - That only then is the approach of the second steel strip continued on the roll stand so that the strip head reaches the roll stand and is gripped by the roll stand.
- the second steel strip can be threaded in a simple manner without the risk of the heating device being damaged by the second steel strip.
- the second steel strip is preferably moved a bit away from the roll stand between the setting of the heating device to the second steel strip and the subsequent continuation of the approach of the second steel strip to the roll stand, so that the head of the second steel strip comes to a stop at the exit of the heating device. This makes it possible to preheat the entire second steel strip, so that the starting area of the second steel strip immediately adjacent to the strip head is rolled in a preheated state.
- a cold rolling mill of the type mentioned is designed in that
- That a heating device is arranged in the second path, by means of which the second steel strip can be heated, so that the second steel strip is fed to the roll stand at a temperature that is higher than the temperature that the second steel strip reels when uncoiled from the first or second uncoiler has, is increased, and
- the uncoiler from which the second steel strip is unwound can alternatively be the first uncoiler or one handle different second decoiler from the first decoiler.
- the first decoiler is arranged on a movable platform, which is positionable at least in a first position and a second position, wherein the first decoiler is arranged closer to the roll stand in the first position of the platform than in the second position of the platform, so that the first path extends from the first decoiler to the rolling stand while the platform is in the first position and the second path extends from the first decoiler to the rolling stand while the platform is in the second position, and
- That the heating device at least when the moveable platform is in the second position, paral lel to the second steel belt, but transversely to a transport direction of the second steel belt from the first decoiler to the roll stand on the second steel belt or orthogonal to the second Steel belt to the second steel belt is adjustable.
- a looper is arranged, which is passed through in a first positioning of the looper by the first steel belt without deflection and in a second positioning of the looper is passed through by the second steel belt to form a loop, so that the first path extends from the first decoiler without forming a loop to the rolling stand and the second path extends from the first decoiler to the rolling stand, forming the loop, - That the heating device, at least when the loop lifter is in the second position, can be positioned against the second steel belt in the area of the loop parallel to the second steel belt, but transversely to a transport direction of the second steel belt in the area of the loop.
- That the heating device is arranged between the second decoiler and the driver device.
- the Walkerein direction is preferably parallel to the second steel belt, but transversely to a transport direction of the second steel belt from the second decoiler to the driver device on the second steel band or orthogonally to the second steel band on the second steel band.
- the heating device is preferably designed as an induction heater. This configuration of the heating device is simple, effective, inexpensive, reliable and robust.
- FIG. 2 shows the cold rolling mill from FIG. 1 during a rolling break between the rolling of the first steel strip and the rolling of a second steel strip
- FIG. 3 shows the cold rolling mill of FIG. 1 during the rolling of the second steel strip
- FIG. 5 shows the cold rolling mill from FIG. 4 during a rolling break between the rolling of the first steel strip and the rolling of a second steel strip
- FIG. 6 shows the cold rolling mill of FIG. 4 during the rolling of the second steel strip
- FIG. 8 shows the cold rolling mill from FIG. 7 during a rolling break between the rolling of the first steel strip and the rolling of a second steel strip
- FIG. 9 shows the cold rolling mill from FIG. 7 during the rolling of the second steel strip.
- a cold rolling mill has a roll stand 1 and a first decoiler 2.
- a first steel strip 3 is unwound by means of the first decoiler 2.
- the first steel strip 3 is fed to the roll stand 1, starting from the first decoiler 2, via a first path and is cold-rolled in the roll stand 1 immediately after unwinding.
- the term "immediately after unwinding" is intended to mean that no other rolling pass takes place between the unwinding of the first steel strip 3 and the rolling pass performed by the rolling stand 1.
- the rolling pass performed by the rolling stand 1 is therefore the first Roll pass of cold rolling.
- other devices are present which are passed through by the first steel strip 3 between the unwinding from the first decoiler 2 and the reaching of the rolling stand 1. Examples of such devices are, as shown in FIG. 1, a pair of deflection rollers 4 and a straightening driver 5.
- the roll stand 1 is the only roll stand of the cold rolling mill. In this case, a reversing rolling of the steel strip 3 takes place in the rolling stand 1 as a rule.
- the rolling stand 1 can be followed by further rolling stands, not shown in FIG. Whether one or the other embodiment is implemented is of subordinate importance in the context of the present invention. Because in the context of the present invention, the first pass of cold rolling is important.
- the first steel band 3 is not heated.
- a later introduced heating device 6 (see FIGS. 2 and 3) is also not shown in FIG. In particular, it is also not arranged in the first path in this operating phase of the cold rolling mill.
- the first steel strip 3 is thus fed to the roll stand 1 at the temperature that the first steel strip 3 has when it is unwound from the first uncoiler 2.
- the second steel strip 7 is also unwound from the first decoiler 2 and then fed to the roll stand 1.
- the feeding takes place starting from the first decoiler 2, but via a second path.
- the second steel strip 7 is also cold-rolled in the roll stand 1 immediately after unwinding.
- the term "immediately after unwinding" is intended - as before - to mean that no other rolling pass takes place between the unwinding of the second steel strip 7 and the rolling pass performed by the roll stand 1.
- the roll pass performed by the roll stand 1 is therefore the first roll pass
- other devices are present, which are passed through by the second steel strip 7 between the unwinding from the first decoiler 2 and the reaching of the rolling stand 1. Examples of such devices are a deflection roller pair 4 and a straightening driver 5, as before .
- the second steel strip 7 is on the way from the first decoiler 2 to the roll stand 1, that is, during the feeding to the roll stand 1, but it warms. For this reason, the Schueinrich device 6 is arranged in the second way. The second steel strip 7 is thus fed to the roll stand 1 at a temperature which is higher than the temperature which the second steel strip 7 has when it is unwound from the first decoiler 2.
- the first reel 2 is arranged on a movable platform 8 as part of the embodiment of FIGS.
- the movable platform 8 can be arranged on rails (not shown).
- the movable platform 8 is at least in a first position (FIG 1, FIG 2 shown in dashed lines on the right) and a second position (FIG 2 shown solid line on the left and FIG 3) can be positioned.
- the first reel 2 is thus arranged closer to the roll stand 1 than in the second position of the platform 8.
- the second path - like the first path - extends from the first decoiler 2 to the roll stand 1
- the second path is longer than the first path because the first decoiler 2 in the second position
- the position of the platform 8 is further away from the roll stand 1 than in the first position of the platform 8.
- the heating device 6 can be placed against the second steel strip 7 from a parked position.
- the adjustment is done preferentially in a direction that runs parallel to the second steel belt 7, but is directed transversely to a transport direction.
- the transport direction is that direction in which the second steel strip 7 is promoted from the first decoiler 2 to the rolling stand 1 ge.
- the heating device 6 can be designed as required. It is preferably designed as an induction heater.
- the heating device 6 may be adjustable against the second steel belt 7 regardless of whether the movable platform 8 is in the first or in the second position. At least the corresponding gradability is given if the movable
- Platform 8 is in the second position.
- the second steel strip 7 is initially, starting from the first decoiler 2, on the roll stand 1 to ge.
- the approach to the roll stand 1 is, however, ended before a strip head 9 of the second steel strip 7 reaches the roll stand 1.
- the approach can be ended when the tape head 9 reaches a point designated by A in FIG.
- the heating device 6 is then placed on the second steel belt 7.
- the heating device 6 is thus located after the adjustment of the second steel belt 7, viewed in the transport direction, at a section of the second steel belt 7 which has already been unwound at this point in time.
- the heating device 6 can with a corresponding design Surrounding section.
- the second steel strip 7 is preferably first moved a little away from the roll stand 1.
- the drive away is preferably so far that the band head 9 of the second steel band 7 comes to rest at the exit of the heating device 6, that is to say approximately at a point designated by B in FIG.
- a pair of scissors 10 to be arranged between the two A and B designated Stel len.
- the tape head 9 can be scooped before driving away.
- a hold-down roller 11 it is possible for a hold-down roller 11 to be arranged between the two points labeled A and B - if the scissors 10 are present, between the scissors and the point labeled A.
- the hold-down roller 11 can usually be positioned against the second steel belt 7, e.g. by swiveling. By means of the hold-down roller 11 it can be achieved in particular that the second steel strip 7 is exactly positioned when the heating device 6 is turned on.
- any ski that is to say a band head 9 bent upwards
- the heating device 6 is positioned against the second steel band 7.
- the risk of damage to the heating device 6 is significantly reduced.
- the second steel strip 7 should have large unevenness.
- FIGS. 4 to 6 A second embodiment of the present invention will now be explained in conjunction with FIGS. 4 to 6.
- a first steel strip 3 is unwound by means of the first decoiler 2.
- the first steel strip 3 is fed to the roll stand 1, starting from the first decoiler 2, via a first path and is cold-rolled in the roll stand 1 immediately after uncoiling.
- the term "immediately after unwinding" is intended - as before - to mean that no other rolling pass takes place between the unwinding of the first steel strip 3 and the rolling pass performed by the rolling stand 1.
- the roll stand 1 is the only roll stand of the cold rolling mill.
- the roll stand 1 can be followed by further roll stands, not shown in FIG.
- the heating device 6 (see FIGS. 5 and 6) is also not shown in FIG. In particular, it is also not arranged in the first path in this operating phase of the cold rolling mill.
- the first steel strip 3 is thus supplied to the roll stand 1 - as before - at the same temperature that the first steel strip 3 has when it is unwound from the first decoiler 2.
- the second steel strip 7 is - as before - also unwound from the first decoiler 2 and then fed to the rolling stand 1.
- the supply takes place, starting from the first decoiler 2, via a second way.
- the second steel strip 7 is also cold-rolled in the Walzge stand 1 immediately after unwinding.
- the term "immediately after unwinding" is intended - as before - to mean that no other rolling pass takes place between the unwinding of the second steel strip 7 and the rolling pass performed by the rolling stand 1.
- the rolling pass performed by the rolling stand 1 is therefore the first Roll pass of cold rolling.
- the heating device 6 is arranged in the second path.
- the second steel strip 7 is thus fed to the roll stand 1 at a temperature which is higher than the temperature that the second steel strip 7 has when uncoiling from the first uncoiler 2.
- a loop lifter 12 is arranged between the first decoiler 2 and the roll stand 1 within the scope of the embodiment of FIGS. 4 to 6.
- the loop lifter 12 can be positioned at least in a first position (FIG 4, FIG 5) and a second position (FIG 6). In the first position the
- Loop lifter 12 run through by the first steel band 3 without deflection and thus also without forming a loop. In the second position, the loop lifter 12 is passed through by the second steel belt 7, forming a loop. This means that the second way is longer than the first way.
- the heating device 6 can be placed against the second steel strip 7 from a parked position.
- the adjustment takes place preferably in a direction that runs parallel to the second steel belt 7, but is directed transversely to a (local) transport direction of the second steel belt 7.
- the transport direction is the direction in which the second steel strip 7 is conveyed (locally) from the first decoiler 2 to the roll stand 1.
- the second steel band 7 can be in the area of the loop 6 are conveyed essentially verti cally and the heating device 6 can be employed in the loading area of the loop essentially horizontally and parallel to the width direction of the second steel belt 7 on the second steel belt 7.
- the heating device 6 can be designed as required. It is preferably designed as an induction heater.
- the heating device 6 can at least then be positioned against the second steel strip 7 when the looper 12 is in the second position. Usually such a steepness is even only given.
- the second steel strip 7 is first, starting from the first decoiler 2, on the roll stand 1 to go.
- the approach to the roll stand 1 is, however, ended before the strip head 9 of the second steel strip 7 reaches the roll stand 1.
- the approach can be ended when the tape head 9 reaches a point designated by A in FIG.
- a driver device 13 which drives the second steel belt 7 (and also the first steel belt 3).
- the driver device 13 it is enough, the looper 12 is usually still in the first position. After the driver device 13 has gripped the tape head 9, the looper 12 is transferred from the first to the second position.
- the second steel band 7 is unwound to the extent necessary to form the loop.
- the heating device 6 is then placed on the second steel belt 7.
- the heating device 6 is thus seen after hiring in the transport direction of the second steel belt 7 at a portion of the second steel belt 7, which has already been reeled at this point in time. Only after the heating device 6 has been switched on the second steel strip 7, the approach of the second steel strip 7 is continued on the roll stand 1. This continuation takes place until the strip head 9 reaches the roll stand 1 and is gripped by the roll stand 1. Then the rolling of the second steel strip 7 is started.
- a pair of scissors 14 is arranged between the driver device 13 and the rolling stand 1.
- the tape head 9 can be scooped before being fed to the roll stand 1.
- a cold rolling mill - as before - a Walzge stand 1 and a first decoiler 2.
- a first steel strip 3 is unwound by means of the first decoiler 2.
- the first steel strip 3 is fed to the roll stand 1, starting from the first decoiler 2, via a first path and is cold-rolled in the roll stand 1 immediately after uncoiling.
- the term "immediately after unwinding" is intended - as before - to mean that no other rolling pass takes place between the unwinding of the first steel strip 3 and the rolling pass performed by the rolling stand 1.
- the roll stand 1 is the only roll stand of the cold rolling mill.
- further roll stands can be arranged downstream of roll stand 1.
- the first steel band 3 - as before - is not heated.
- the first steel strip 3 is thus supplied to the roll stand 1 - as before - with the temperature that the first steel strip 3 has when it is unwound from the first decoiler 2.
- the second steel strip 7 is unwound from a second decoiler 15 and then fed to the roll stand 1.
- the second decoiler 15 is a decoiler different from the first decoiler 2.
- the supply takes place, starting from the second decoiler 15, via a second path.
- the second steel strip 7 is also cold-rolled in the Walzge stand 1 immediately after unwinding.
- the term "immediately after unwinding" is intended - as before - to mean that no other rolling pass takes place between the unwinding of the second steel strip 7 and the rolling pass performed by the rolling stand 1.
- the rolling pass performed by the rolling stand 1 is therefore the first 7 to 9, however, it is possible for other devices to be present which are run through by the second steel strip 7 between the unwinding from the second decoiler 15 and the reaching of the rolling stand 1. Examples of such devices are According to the illustration in FIGS. 7 to 9, a deflection roller pair 16 and a straightening driver 17.
- the second steel strip 7 is the roll stand
- a driver device 18 is arranged upstream of the Walzge stand 1. Both ways he thus stretch from the respective decoiler 2, 15 on the
- the heating device 6 between the second decoiler 15 and the driver device 18 is arranged in the context of the embodiment of FIGS. Due to the presence of the heating device 6, the distance of the second payoff 15 from the driver device 18 is greater than the distance of the first payoff
- the second path (ie the path from the second decoiler 15 to the rolling stand 1) is greater than the first path (ie the path from the first reel 2 to the rolling stand 1).
- the heating device 6 is arranged in a stationary manner.
- the heating device 6 can preferably be placed against the second steel strip 7 from a parked position.
- the adjustment takes place preferably in a direction that runs parallel to the second steel belt 7, but is directed transversely to a (local) transport direction of the second steel belt 7.
- the transport direction is that direction in which the second steel belt 7 is conveyed locally from the second decoiler 15 to the driver device 18 in the loading area of the heating device 6.
- the heating device 6 can be designed as required. It is preferably designed as an induction heater.
- the second steel strip 7 is first, starting from the second decoiler 15, on the roll stand 1 to go to ge.
- the approach to the roll stand 1 is, however, ended before the strip head 9 of the second steel strip 7 reaches the roll stand 1.
- the approach can be ended when the tape head 9 reaches a point designated by A in FIG.
- Shortly before this point there is usually a pair of deflection rollers 19 which drive the second steel belt 7 (but usually not the first steel belt 3).
- the pulley pair 19 is located in front of the driver device 18. After the pulley pair 19 has gripped the tape head 9, a scooping of the tape head 9 can optionally take place shortly before or shortly after the pulley pair 19 by means of scissors (not shown).
- the heating device 6 is employed on the second steel belt 7.
- the heating device 6 is thus located after hiring in the transport direction of the two th steel belt 7 at a section of the second steel belt 7 which is already unwound at this point. Only after the heating device 6 has been positioned on the second steel strip 7 is the second steel strip 7 continued to be fed onto the roll stand 1. This continuation he follows until the strip head 9 reaches the roll stand 1 and is taken by the roll stand 1. Then the rolling of the second steel strip 7 is started.
- steel strips which are relatively ductile in the cold state, can be classified as first steel strips 3 and - as in the prior art - are rolled with a very short dimensional length.
- Steel strips, which were brittle and fragile when cold, - in particular electrical steel - can, however, be classified as second steel strips 7, so that these steel strips are heated in the roll stand 1 before rolling. These steel strips therefore have a larger dimensional length, but can be rolled reliably and without the risk of strip tears.
- the heating device 6 is only turned on after the respective second steel belt 7 has been passed through the area in which the heating device 6 is employed on the respective second steel belt 7, the heating device 6 is also reliably protected from damage if the respective two te steel band 7 is strongly bent or has a ski.
- further operation of the cold rolling mill is possible in the event of a failure of one of the two payoff reels 2, 15.
- the invention can also be retrofitted to existing discontinuous cold rolling mills. The costs required to convert the respective cold rolling mill are relatively low.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019110271.5A DE102019110271A1 (de) | 2019-04-18 | 2019-04-18 | Kaltwalzwerk mit alternativer Zuführung eines Stahlbandes über zwei verschiedene Wege |
| PCT/EP2020/060504 WO2020212372A1 (de) | 2019-04-18 | 2020-04-15 | Kaltwalzwerk mit alternativer zuführung eines stahlbandes über zwei verschiedene wege |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3956082A1 true EP3956082A1 (de) | 2022-02-23 |
| EP3956082B1 EP3956082B1 (de) | 2023-03-08 |
Family
ID=68886131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20725082.0A Active EP3956082B1 (de) | 2019-04-18 | 2020-04-15 | Betriebsverfahren für ein kaltwalzwerk mit alternativer zuführung eines stahlbandes über zwei verschiedene wege sowie entsprechendes kaltwalzwerk |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11440066B2 (de) |
| EP (1) | EP3956082B1 (de) |
| CN (1) | CN113661018B (de) |
| DE (1) | DE102019110271A1 (de) |
| WO (1) | WO2020212372A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115741125B (zh) * | 2022-11-30 | 2026-01-27 | 佛山市诺创智能设备有限公司 | 多规格板件生产线及生产方法 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0760303A (ja) * | 1993-08-24 | 1995-03-07 | Kawasaki Steel Corp | 鋼帯の冷間圧延設備 |
| DE19950609C2 (de) * | 1999-10-21 | 2001-10-18 | Bwg Bergwerk Walzwerk | Verfahren zum Reduzieren der Schrottlänge beim Walzen von mittels Schweißnähten verbundener Metallbänder und Tandemstraße zur Durchführung des Verfahrens |
| NL1014116C2 (nl) * | 2000-01-19 | 2001-07-20 | Corus Aluminium Walzprod Gmbh | Werkwijze en inrichting voor het vormen van een laminaat van gecomprimeerd metaalpoeder met een schuimmiddel tussen twee metaallagen, en daarmee gevormd produkt. |
| FR2817876B1 (fr) * | 2000-12-08 | 2003-03-28 | Vai Clecim | Installation de production d'une bande metallique avec revetement de protection |
| US6722002B1 (en) * | 2001-12-14 | 2004-04-20 | Engineered Materials Solutions, Inc. | Method of producing Ti brazing strips or foils |
| FR2942978B1 (fr) * | 2009-03-16 | 2011-03-18 | Fives Dms | Procede d'elaboration, en discontinu, d'une bande d'acier inoxydable a partir d'une bande d'acier prealablement laminee a chaud |
| JP5486261B2 (ja) * | 2009-10-08 | 2014-05-07 | 三菱日立製鉄機械株式会社 | 電磁鋼板用冷間圧延設備及び圧延方法 |
| DE102009052779A1 (de) * | 2009-11-11 | 2011-05-12 | Sms Siemag Ag | Verfahren und Vorrichtung zum Walzen und Glühen von Edelstahlband |
| DE102012002642B4 (de) * | 2012-02-08 | 2013-08-14 | Salzgitter Flachstahl Gmbh | Warmband zur Herstellung eines Elektroblechs und Verfahren hierzu |
| EP2769779A1 (de) * | 2013-02-22 | 2014-08-27 | Siemens VAI Metals Technologies GmbH | Anlage und Methode zum Walzen eines Metallstreifens |
| US20170002439A1 (en) * | 2014-01-17 | 2017-01-05 | Danieli & C. Officine Meccaniche Spa | Plant and method for the production of metal |
| JP6020475B2 (ja) | 2014-01-20 | 2016-11-02 | Jfeスチール株式会社 | 冷間圧延設備 |
-
2019
- 2019-04-18 DE DE102019110271.5A patent/DE102019110271A1/de not_active Withdrawn
-
2020
- 2020-04-15 EP EP20725082.0A patent/EP3956082B1/de active Active
- 2020-04-15 US US17/602,316 patent/US11440066B2/en active Active
- 2020-04-15 CN CN202080029648.5A patent/CN113661018B/zh not_active Expired - Fee Related
- 2020-04-15 WO PCT/EP2020/060504 patent/WO2020212372A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN113661018B (zh) | 2023-08-01 |
| US11440066B2 (en) | 2022-09-13 |
| DE102019110271A1 (de) | 2020-01-02 |
| EP3956082B1 (de) | 2023-03-08 |
| CN113661018A (zh) | 2021-11-16 |
| US20220184676A1 (en) | 2022-06-16 |
| WO2020212372A1 (de) | 2020-10-22 |
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