CN104411419A - Method for working rolled stock in a rolling train - Google Patents
Method for working rolled stock in a rolling train Download PDFInfo
- Publication number
- CN104411419A CN104411419A CN201380036357.9A CN201380036357A CN104411419A CN 104411419 A CN104411419 A CN 104411419A CN 201380036357 A CN201380036357 A CN 201380036357A CN 104411419 A CN104411419 A CN 104411419A
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- Prior art keywords
- load
- moment
- drive unit
- real
- mill stand
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
-
- 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
- B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/18—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention relates to a method for working rolled stock (6) in a rolling train (2), which comprises at least two roll stands (4), each with at least one roll (13), wherein each roll stand (4) is assigned a separate drive (8) with speed control for the at least one roll (13), in which method, when at least one of the drives (8) is subjected to an actual load moment (MLoad), to control the speed of the drives (8) a simulated load moment (MLoad, Sim) is additionally fed to at least one control circuit (14) of one of the drives (8) in dependence on the actual load moment (MLoad).
Description
Technical field
The present invention relates to a kind of method for processing rolled piece in mill train, mill train has the mill stand that at least two have at least one roll respectively, wherein, for each mill stand is assigned with the independent drive unit at least one roll.
Background technology
When processing rolled piece, such as, when processing the steel of so-called slab or square billet form or different metals, rolled piece is through the mill train with multiple mill stand, and wherein, rolled piece is rolled into band or wire rod in multiple passage.When rolled wire, use following mill stand, it has every two grooved roll rings stacked each other and is used as roll, and grooved roll has the aperture of circle alternately and elliptic design, and its cross section reduces after each passage.Therefore, circular wire rod has been manufactured from having the square billet being almost square cross section.
In order to make rolled piece be rolled down to desired thickness or desired cross section at each mill stand place, the rotating speed of the roll of single mill stand must be adjusted to the rated value of rotating speed.Single rotating speed rated value and therefore successively the ratio to each other of the roll rotational speed of continuous print mill stand usually also preset by rolling program.In order to the end at mill train, obtain the desired thickness of the rolled piece processed or desired cross section, predetermined rotating ratio must be observed as far as possible accurately between processing period, that is, the rotary speed actual value of the roll of continuous print mill stand also must meet predetermined rotating ratio between whole processing period always successively.
Particularly when rolled wire, there is high mill speed, ratio between the roll rotational speed of therefore reduction per pass and single mill stand must mutually be coordinated accurately and keep constant, to avoid being applied to the pulling force on the wire rod between mill stand and pressure load.Even if very little deviation also may cause broken wires or be formed being wound around.
Guarantee that rotating ratio keeps constant possibility to be make all mill stands coupled to each other rigidly by the transfer gear of machinery, and utilize common engine to drive.But very large shortcoming is now, all collars of such as always must changing when single collar wearing and tearing or again polish, because the cross section in aperture or diameter must be coordinated mutually, so that the effect of rolling desired by realizing.Therefore, this way is very consuming time and with high costs.
These shortcomings can overcome thus, make each mill stand utilize independent drive unit, and namely own engine and transmission device drive.So, by the rotating speed rated value set for each drive unit by the speed adjustment system existed for each drive unit, the mill speed of the roll of each mill stand is set independently of one another.Then, by changing that compensate single roll for the rotating speed rated value reaching the mill speed required by corresponding drive unit or that collar is right wearing and tearing.In addition do not need constructively to expend very large mechanical transfer gear.
But a major challenge of this drive unit solution is the adjustment to the rotating speed of single mill stand during processing rolled piece.Mill stand rise roll time, namely when rolled piece collides on roll, real loading moment is applied on rolled piece, and this loading moment causes the decline of the roll rotational speed at mill stand place.On the contrary, rolling time point and do not have loading moment or have different, such as less real load moment loading to the roll on it rising of other mill stands, has rotating speed that is unaltered or that only slightly change.Which results in, the rotating speed of single drive unit or roll is no longer synchronous, namely no longer carrys out work with predetermined rotating ratio to each other.This can cause pulling force or pressure load, and thus causes the fracture of wire rod or the rolled piece between each mill stand to form winding.
Summary of the invention
The object of the invention is, providing a kind of method for processing rolled piece, which avoids above-mentioned shortcoming.
This object is realized by one method according to claim 1.Comprise at least two have respectively process rolled piece in the rolling-mill housing of the mill stand of at least one roll time, wherein, for each mill stand is assigned with the independent drive unit with speed adjustment system at least one roll, when loading real load moment at least one in drive unit, in order to regulate the rotating speed of drive unit, be additionally at least one regulating loop conveying fictitious load moment of drive unit according to real load moment.
Have process rolled piece in the mill train respectively with the mill stand of the drive unit of oneself time, the roll of each mill stand is adjusted to rotating speed rated value respectively.For this reason, each drive unit has the speed adjustment system of band regulating loop, and wherein detect the actual value of rotating speed constantly, this actual value compared with the rated value of rotating speed, and matches with it in the conceived case.If drive unit is loaded with real load moment, which results in the decline of rotating speed, and therefore cause the reduction of the actual value of rotating speed.The roll of mill stand is adjusted to the rated value of rotating speed by the speed adjustment system of drive unit again.Select single rotating speed rated value as follows at this, make rolled piece be rolled down to desired thickness or desired cross section at each mill stand place.Therefore, preset the rotating ratio successively between the roll of continuous print mill stand, this rotating ratio must keep during processing rolled piece.
In order to ensure above-mentioned, the actual value of the roll rotational speed of mill stand also must be always corresponding with the rotating ratio that this is preset.Therefore, when having occurred loading moment, rotating ratio also must keep constant.Because that occur at drive unit place, real loading moment causes the decline of the actual value of rotating speed, so in order to regulate the rotating speed of other drive unit, to the loading moment of its regulating loop conveying simulation.This makes, and reduces equally in the actual value of the rotating speed at other drive unit places, and the rotating ratio preset also remains unchanged during being loaded with real loading moment for drive unit.
In other words: if drive unit is braked owing to there is real loading moment or accelerates, so other drive unit induction of loading moment of also being simulated and slow down or accelerate, to realize, at the rotary speed actual value at all mill stand places, synchronous change occurs, such as, reduce.Which ensure that, when the actual value of the rotating speed at least one mill stand place and rotating speed rated value have deviation, now predetermined rotating ratio also keeps constant.Synchronously mean, rotating speed and the mill speed of single mill stand show simultaneously and the change curve that shape is identical, thus predetermined rotating ratio is constant all the time.
Therefore, according to the present invention, do not load or only load the drive unit of small real load moment, load the time point of real loading moment at drive unit, when namely such as playing rolled piece in mill stand, in regulating loop, simulate loading moment that is artificial, that imitate.The loading moment of this simulation makes the actual value of the rotating speed at each mill stand place almost side by side and synchronously alternatively decline, thus when the actual value of the rotating speed of one or more drive unit deviates from rated value, the ratio of the rotating speed preset by rotating speed rated value also keeps constant and remains unchanged between whole processing period.Reliably prevent thus rolled piece, the fracture of such as wire rod, or formed and be wound around.
In other words: when having real loading moment in one of them place of drive unit effect, in order to adjusting rotary speed in the regulating loop of other drive units, fictitious load moment respectively, all to cause synchronous rotating speed to decline at all mill stand places.Select the size of the loading moment of simulating according to real loading moment as follows, make the rotating speed of drive unit observe the rotating ratio preset.
Therefore, conception of the present invention is based on following, namely, by loading corresponding loading moment for each drive unit, it may be loading moment that is real, that simulate or truly mix mutually with simulation, make, when real load appears in the time with staggering, to also ensure that the rotating speed of single mill stand and the synchronism of mill speed.At this, synchronism is interpreted as, when the actual value of at least one rotating speed changes, maintaining the predetermined ratio of rotating speed and mill speed equally.
In the method according to the invention, such as when rolled piece enters on the first mill stand, namely rise when rolling in the first mill stand, a drive unit is only loaded with real loading moment, and the regulating loop of other drive units only delivered the loading moment of simulation respectively.If rolled piece is through mill train, so each mill stand is in turn loaded with real loading moment.Then, be to rise in the second mill stand when rolling, such as only be applied with real loading moment at the first mill stand place, and be applied with less, real loading moment at the second mill stand place, and the loading moment of simulation is additionally applied in the regulating loop of the speed adjustment system of the second mill stand.The loading moment having simulation only carried respectively by the drive unit of following mill stand thereafter.Therefore, for the rotational speed regulation of each drive unit, there is whole loading moments, it can either only be made up of real loading moment, also can be made up of the loading moment of purely simulating, or is made up of the combination of these two kinds of loading moments.
In preferred design of the present invention, when loading real loading moment for multiple drive unit, according to the loading moment of the highest real load moment conveying simulation.In other words: if there is real loading moment at multiple drive unit place, the loading moment so flowing to the simulation of the corresponding regulating loop of other drive units is determined by the highest real load moment.
Especially, the highest real load moment utilizes MAXIMUM SELECTION function to determine.
In addition, advantageously, when multiple drive unit is loaded with real loading moment, between the highest real load moment and real load moment, form difference moment, and this difference moment is carried as the loading moment of simulation.At this, for each mill stand, define poor moment in the highest real load moment with between the real load moment of corresponding mill stand place appearance, and flow to the regulating loop of corresponding drive unit as the loading moment of simulating.In other words: the highest real load moment determines real load moment at each mill stand place and fictitious load moment sum.
In other the preferred embodiment of this method, obtain the rotating ratio of the roll of continuous print mill stand successively according to rolling program.In other words: for each mill stand, obtain rotating speed rated value according to rolling program, thus rolled piece is rolled down to desired thickness or desired cross section in each mill stand.The rotating speed rated value of each roll of mill stand has the rotating ratio of determination to each other.In order to make the rotating ratio obtained according to rolling program keep constant between the whole processing period of rolled piece, according to this method of the rotating speed for regulating drive unit, the regulating loop to drive unit additionally carries the loading moment of simulation respectively.Therefore, because the rotating speed causing identical change at all mill stand places declines, rotating ratio keeps constant.
In other the preferred embodiment of this method, equally according to the loading moment of rolling program difference calculating simulation.This is particularly advantageous when starting to process rolled piece, when also there is not measured value.
Other examples of this method are, obtain the loading moment of simulation by measurement parameter respectively.This measurement parameter can be such as to real torque or and the proportional transmitter electric current of torque measurement the loading moment obtained.During processing rolled piece, obtain this measurement parameter constantly, thus can follow the tracks of respectively constantly and the loading moment of Optimized Simulated.Which results in the loading moment obtaining simulation according to real loading moment more accurately.
Loading the time point of real loading moment in order to identify drive unit, in a preferred embodiment, detecting this time point.In other words: according to suitable measurement parameter, such as roll-force, torque or define the Motor Current of moment, roll time point with measuring technique detection rolled piece rising of mill stand place.At this particularly advantageously, according to rolled piece through mill train motion obtain in mill stand, work the time point rolled.In this material tracing process, such as, determine to roll time point by detector, such as so-called " cold/hot metal detector (hot metal detectors) ".Such as provide the top of the rolled piece through mill stand, the summit of such as wire rod at this and be used as measurement point.
Other preferred variants is, obtains according to model the time point that drive unit loads real loading moment.This such as can realize by calculating by the motion model of rolled piece.At this, such as, obtain the speed of rolled piece according to rolling peripheral speed and the lead calculated.
Accompanying drawing explanation
In conjunction with below by accompanying drawing more elaboration above-mentioned attribute of the present invention, feature and advantage are made to the explanation of embodiment and how to realize these mode and method clearly understandable.
To the embodiment of other explanations of the present invention see accompanying drawing.Illustrate with schematic schematic diagram:
Fig. 1 is the profile having continuous print mill stand successively and have the mill train of the independent drive unit for each mill stand,
Fig. 2 is the schematic diagram of the regulating loop of drive unit for mill stand,
Fig. 3 is the temporal change curve of the real load moment occurred at drive unit place,
Fig. 4 is the temporal change curve of the rotating speed of the drive unit of the real load moment be loaded with according to Fig. 3,
Fig. 5 is the temporal change curve of the loading moment in the simulation of drive unit place,
Fig. 6 is the temporal change curve of the rotating speed of the drive unit of the fictitious load moment be loaded with according to Fig. 5.
Detailed description of the invention
Fig. 1 shows the section of the mill train 2 for processing rolled piece 6 with continuous print mill stand 4 successively.Illustrating eight continuous print mill stands 4 successively in FIG, such as, is that the rolled piece 6 of the square billet being rolled into wire rod is through this mill stand.
For each mill stand 4 is assigned with the independent drive unit 8 with speed adjustment system, this drive unit comprises engine 10 and transmission device 12, is only mill stand 4 in FIG draws this drive unit for simple and clear reason.Transmission device 12 is such as the combination be made up of double helical gearing and variable speed drive.Each mill stand 4 also comprises at least one roll 13, such as two rolls 13, and it is adjusted to the rated value n of rotating speed by corresponding drive unit 8
soll.For this reason, in the regulating loop 14 of the speed adjustment system of drive unit 8, rotary speed actual value n is detected constantly
ist, this rotary speed actual value with such as according to the rotating speed rated value n that rolling program is obtained
sollcompare and match with it.
Fig. 2 shows the regulating loop 14 according to drive unit 8 of the present invention, for regulating the rotating speed n of drive unit 8
istand thus regulate the rotating speed of the roll 13 of mill stand 4.
Regulating loop 14 comprises adjusting device 16, such as pi regulator, utilizes this adjuster to detect and regulates the actual value n at rotating speed
istwith the rated value n of rotating speed
sollbetween adjustment difference.In addition, regulating loop 14 comprises torque modulation system that is secondary, that have current transformer 18, and this current transformer is that engine 10 is powered, and at desired point control running time engine, also comprising integrator 20, which represent the rotary inertia needing to consider when regulating of drive unit 8.
Real loading moment M
loadjoin in regulating loop 14 in the upstream of the downstream sum-product intergrator 20 of current transformer 18, and directly affect the actual value n of rotating speed
ist.Fictitious load moment M
load, Simflow to the regulating loop 14 immediately preceding adjusting device 16 downstream, to realize the loading moment M of simulation
load, Simwith real loading moment M
loadthe very little delay compared.Therefore, the loading moment M of simulation
load, Simdirectly affects the torque that produced by current transformer 18 in engine 10 and thus also have impact on carried power.
Real loading moment M is loaded with at drive unit 8
loadtime, this loading moment as shown in Figure 3 at time point T, namely such as rise to when rolled piece 6 rolls in mill stand 4, the current rotating speed n of drive unit 8 and roll 13
istreduce.Fig. 4 shows the actual value n of the rotating speed when time point T
istwith real load moment M
loadthe corresponding decline of size.It does not act on or has acted on and be different from real load moment M
loadloading moment drive unit 8 without undergoing or only through receiving small rotating speed n
istdecline.Therefore, the roll of mill stand 4 no longer synchronously runs, and is not namely run by the ratio of rotating speed predetermined in rolling program to meet.
In order to make the rotating ratio of all drive units 8 keep constant during the whole process of processing rolled piece 6, namely equaling by the predetermined rotating ratio of rolling program, according to Fig. 2, loading real loading moment M for drive unit 8
loadtime, according to real loading moment M
loadadditionally to the loading moment M of the regulating loop 14 of at least one the conveying simulation of drive unit 8
load, Sim, as shown in Figure 5.The loading moment M of simulation
load, Simshow and real loading moment M
loadcorresponding temporal change curve.At this, real loading moment M only can be acted at drive unit 8 place
load, pure simulation loading moment M
load, Sim, or not only have real loading moment M
loadalso has the loading moment M of simulation
load, Sim.Under any circumstance, the loading moment M flowing to the simulation of the regulating loop 14 of drive unit 8 is now selected all as follows
load, Sim, make as each drive unit 8 of each mill stand 4 is according to real loading moment M
loadobtain following loading moment, it causes the rotating speed n of all drive units 8
istwhile and the reduction of synchronous change.Therefore, by the loading moment M of simulation
load, Sim, time point T ensure that rotating speed while all drive unit 8 places decline-as shown in Figure 6-, and thus guarantee the synchronism of the roll 13 of each mill stand 4.
When rolled piece 6 enters into the first mill stand 4, such as, only have a drive unit 8, namely the drive unit of the first mill stand 4 is loaded with real loading moment M
load.Real loading moment M has not been acted at every other drive unit 8 place
load, therefore according to the real load moment M occurred at the first mill stand 4 place
loadregulating loop 14 respectively to them only carries a loading moment M simulated
load, Sim.
If rolled piece 6 appears in the second mill stand 4, so the drive unit 8 of the first mill stand 4 continues to be loaded with real loading moment M
load.Also act on real loading moment M at the second mill stand 4 place now
load, its with act on the real load moment M at the first mill stand 4 place
loaddifferent.Multiple, in the case two drive units 8 be loaded with real load moment M
loadtime, determine larger real load moment M
load, namely the highest real load moment M
load.This such as can be undertaken by MAXIMUM SELECTION function.According to the highest real load moment M
loadregulating loop 14 for drive unit 8 carries the loading moment M of simulation
load, Sim.For this reason, such as define at the highest real load moment M at each mill stand 4 place respectively
loadwith real load moment M
loadbetween difference.This difference moment is as the loading moment M of simulation
load, Simflow to and there is less real load moment M
loadthe corresponding regulating loop 14 of drive unit 8.
In other words: the highest real load moment M acting on drive unit 8 place of mill stand 4
loaddetermine the real load moment M at other mill stands 4 place
loadwith the loading moment M of simulation
load, Simand.
In the present embodiment, at the real load moment M at the first mill stand place
loadbe greater than the real load moment M at the second mill stand place
load.Therefore, at the real load moment M at the first mill stand place
loadthe highest real load moment M
load.When rolled piece 6 appears in the second mill stand 4, determine the real load moment M occurred at the first mill stand 4 place
loadwith the real load moment M occurred at the second mill stand 4 place
loadbetween poor moment, and this difference moment as simulation loading moment M
load, Simload to the regulating loop 14 of the second mill stand 4.In addition, also basis is carried to appear at the real load moment M at the first mill stand 4 place to other drive unit 8
loadthe fictitious load moment M determined
load, Sim.
If such as the 3rd mill stand 4 is loaded with the real load moment M being greater than the first mill stand 4 subsequently when processing rolled piece 6
load, so therefore at the real load moment M at the 3rd mill stand 4 place
loadbe exactly the highest real load moment M
load, which determine the true of all the other mill stands 4 place and simulation loading moment and.Again be formed with poor moment, and flowed to the regulating loop 14 of all the other drive units 8.Therefore, according to the highest new real load moment M
loadimprove fictitious load moment M
load, Sim.
Fictitious load moment M
load, Simsize such as can obtain by rolling program equally.During processing rolled piece 6, can by measure parameter M, such as by real torque or and the load torque that measures of the measurement of the proportional Motor Current of torque, determine fictitious load moment M
load, Sim.There is measurement mechanism 22 for this reason.
According to the present invention, be loaded with real load moment M at least one drive unit 8
loadtime, achieve and will be used for the fictitious load moment M of the rotating speed regulating drive unit 8
load, Simbe transported at least one regulating loop 14 of a drive unit in drive unit 8.Such as when rolled piece 6 rolls or occurs in mill stand 4, achieve drive unit 8 and load real load moment M
load.
Drive unit 8 can be detected and load real load moment M
loadtime point T, namely can obtain according to measurement parameter M.Such as detect roll-force or torque with measuring technique by measurement mechanism 22 for this reason.Obtaining of time point T can also be realized according to value, such as its speed of measuring at rolled piece 6 place with through the motion of mill train 2.Then, fictitious load moment M
load, Simregulating loop 14 is flowed at time point T.
Can also imagining, obtaining time point T with calculating according to such as reflecting the model of rolled piece 6 through the motion of mill train 2.
Although by preferred embodiment elaboration describe the present invention in detail, the present invention is not limited to the disclosed embodiments, and those skilled in the art therefrom can derive other variant, and does not leave protection scope of the present invention.
Claims (10)
1. the method for processing rolled piece (6) in mill train (2), described mill train comprises the mill stand (4) that at least two have at least one roll (13) respectively, wherein, for each mill stand (4) point is used in the independent drive unit (8) with speed adjustment system of roll described at least one (13), wherein, real load moment (M is being loaded for one of them in described drive unit (8)
load) time, in order to regulate the rotating speed of described drive unit (8), additionally according to described real load moment (M
load) be at least one regulating loop (14) conveying fictitious load moment (M of a drive unit in described drive unit (8)
load, Sim).
2. method according to claim 1, wherein, a described drive unit (8) only loads real load moment (M
load), and be described regulating loop (14) the difference only conveying fictitious load moment (M of other described drive unit (8)
load, Sim).
3. method according to claim 1 and 2, wherein, is loading real load moment (M for multiple described drive unit (8)
load) time, described fictitious load moment (M
load, Sim) according to the highest described real load moment (M
load) carry.
4. method according to claim 3, wherein, utilizes MAXIMUM SELECTION function to determine the highest described real load moment (M
load).
5. according to method in any one of the preceding claims wherein, wherein, loading real load moment (M for multiple described drive unit (8)
load) time, at the highest described real load moment (M
load) and described real load moment (M
load) between formed difference moment, and this difference moment as fictitious load moment (M
load, Sim) carry.
6. the rotating ratio of the described roll (13) of described mill stand (4) according to method in any one of the preceding claims wherein, wherein, is obtained according to rolling program.
7. according to method in any one of the preceding claims wherein, wherein, calculate described fictitious load moment (M respectively according to rolling program
load, Sim).
8. according to method in any one of the preceding claims wherein, wherein, obtain described fictitious load moment (M respectively according to measurement parameter (M)
load, Sim).
9. according to method in any one of the preceding claims wherein, wherein, detect as drive unit (8) loads real load moment (M
load) time point (T).
10. according to method in any one of the preceding claims wherein, wherein, obtain as drive unit (8) loads real load moment (M according to model
load) time point (T).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20120175532 EP2684623A1 (en) | 2012-07-09 | 2012-07-09 | Method for processing milled goods in a mill train |
| EP12175532.6 | 2012-07-09 | ||
| PCT/EP2013/062208 WO2014009093A1 (en) | 2012-07-09 | 2013-06-13 | Method for working rolled stock in a rolling train |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104411419A true CN104411419A (en) | 2015-03-11 |
| CN104411419B CN104411419B (en) | 2017-06-13 |
Family
ID=48652050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380036357.9A Active CN104411419B (en) | 2012-07-09 | 2013-06-13 | Method for processing rolled piece in mill train |
Country Status (3)
| Country | Link |
|---|---|
| EP (2) | EP2684623A1 (en) |
| CN (1) | CN104411419B (en) |
| WO (1) | WO2014009093A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108136462A (en) * | 2015-10-15 | 2018-06-08 | Sms集团股份有限公司 | For the method and milling train of rolling in-process stock |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015205691A1 (en) * | 2015-03-30 | 2016-10-06 | Siemens Aktiengesellschaft | Method for reducing the noise of an electric motor |
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| DE102009050710B4 (en) | 2009-10-26 | 2016-08-04 | Sms Group Gmbh | Wire rolling stand with single drive |
-
2012
- 2012-07-09 EP EP20120175532 patent/EP2684623A1/en not_active Withdrawn
-
2013
- 2013-06-13 WO PCT/EP2013/062208 patent/WO2014009093A1/en active Application Filing
- 2013-06-13 CN CN201380036357.9A patent/CN104411419B/en active Active
- 2013-06-13 EP EP13729691.9A patent/EP2849896B1/en active Active
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|---|---|---|---|---|
| US3237071A (en) * | 1963-04-05 | 1966-02-22 | Allis Chalmers Mfg Co | Motor load distributing system for metal rolling mill |
| US3543549A (en) * | 1967-11-21 | 1970-12-01 | Davy & United Eng Co Ltd | Rolling mill control for compensating for the eccentricity of the rolls |
| US4485497A (en) * | 1979-12-27 | 1984-12-04 | Mitsubishi Denki Kabushiki Kaisha | Apparatus for controlling re-distribution of load on continuous rolling mill |
| US4662202A (en) * | 1985-07-23 | 1987-05-05 | Cargill, Incorporated | Low tension cascade mill speed control by current measurement with temperature compensation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108136462A (en) * | 2015-10-15 | 2018-06-08 | Sms集团股份有限公司 | For the method and milling train of rolling in-process stock |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2849896A1 (en) | 2015-03-25 |
| EP2849896B1 (en) | 2016-12-21 |
| EP2684623A1 (en) | 2014-01-15 |
| CN104411419B (en) | 2017-06-13 |
| WO2014009093A1 (en) | 2014-01-16 |
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