CN104428075A - Method for processing rolling stock in a rolling mill - Google Patents
Method for processing rolling stock in a rolling mill Download PDFInfo
- Publication number
- CN104428075A CN104428075A CN201380036366.8A CN201380036366A CN104428075A CN 104428075 A CN104428075 A CN 104428075A CN 201380036366 A CN201380036366 A CN 201380036366A CN 104428075 A CN104428075 A CN 104428075A
- Authority
- CN
- China
- Prior art keywords
- drive unit
- rolling
- pilot control
- loading moment
- mill housing
- 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
- 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
- B21B2275/00—Mill drive parameters
- B21B2275/02—Speed
- B21B2275/04—Roll speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2275/00—Mill drive parameters
- B21B2275/10—Motor power; motor current
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2275/00—Mill drive parameters
- B21B2275/10—Motor power; motor current
- B21B2275/12—Roll torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B35/02—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B35/02—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills
- B21B35/04—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills each stand having its own motor or motors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention relates to a method for processing rolling stock (6) in a rolling mill (2) having at least one rolling stand (4) which has a drive (8), in which method, in order to reduce a rotational speed dip of the drive (8) caused by a predictable load torque (ML) which acts on the drive (8), a rolling torque pilot control of the drive (8) is carried out by the torque-forming current (I) which is fed to the drive (8).
Description
Technical field
The present invention relates to the method for the rolled piece of a kind of process in milling train, this milling train has at least one rolling-mill housing with drive unit.
Background technology
When processing rolled piece, such as steel or the different metal with so-called slab or steel billet form, rolled piece is through the mill train with one or more rolling-mill housing.Each rolling-mill housing has one respectively and utilizes roll for the drive unit of roll, rolled piece be rolled into there is expection geometry, as the sheet material of predetermined thickness or cross section or wire rod.
In order to realize this object, roll must be adjusted to the rotating speed determined under the help of the drive unit of each rolling-mill housing.It is important in this that, during the whole service of mill train, the predetermined ratio of the rotating speed of the roll of each mill train also will keep constant, this is because otherwise tension load and pressure load will be occurred on rolled piece, this can cause undesirable rolling result again, or even can cause the fracture of rolled piece or form knotting.
In order to especially guarantee this object in mechanical aspects when high mill speed, more such as be in the transfer gear connection coupled to each other rigidly by machinery in the wire frame of multi-frame of the roll in elongated products mill train, and utilize common motor to drive.But, be that equipment component can not be matched with other product owing to fixing for rotating ratio this one larger shortcoming, and such as when some roll wears, whole roll stacks all need to ponder again, otherwise just there will be above-described effect.
These shortcomings can overcome thus, and namely each rolling-mill housing has the independent drive unit for roll.At this each drive unit, there is independent speed setting unit respectively, thus can individually adjust it.
But the huge requirement of of such drive unit solution regulates the roll of each rolling-mill housing or the revolution of drive unit during process rolled piece.Especially true when different loading moments has an impact to each rolling-mill housing, this is such as the situation when open rolling, namely when rolled piece appears on roll.When loading moment has such impact on drive unit, roll is braked, and therefore this cause the rotating speed of the roll in relevant rolling-mill housing or drive unit to decline.On the contrary, not have when open rolling time point or the roll of devious, such as less loading moment to its those other rolling-mill housing influential has unaltered or only change less rotating speed.This causes the rotating speed of each drive unit or roll asynchronous, namely no longer carries out work with the rotating ratio preset each other.This causes the mistake of material thickness and causes when unallowed stretching or pressure load the fracture of the wire rod between each rolling-mill housing or rolled piece to form knotting.
For this reason, utilize up to now, the speed setting unit of the correction engaging means with partial stack, each drive unit of the characteristic of whole system, namely rolling-mill housing or the characteristic of roll and its be all no longer foreseeable on the impact of rolling result, thus make the quality of rolled piece no longer can with require to adapt.
Summary of the invention
Therefore, the object of the invention is to propose a kind of method for the treatment of the rolled piece in milling train, wherein can avoid above-mentioned shortcoming.
This object is realized by the method for the treatment of the rolled piece in milling train with feature according to claim 1.At this, this milling train has at least one rolling-mill housing with drive unit, wherein, in order to be decreased through generation effect on the drive means, the rotating speed of drive unit that foreseeable loading moment causes declines, by flow to drive unit, the electric current that forms moment realizes the roll torque pilot control of drive unit.
In the method according to the invention, when such as when there is foreseeable loading moment in open rolling, the rotating speed determined thus descends through and reduces the roll torque pilot control of the electric current of the formation moment being supplied to drive unit.Suitable parameter is applied for the predictable of loading moment, the spacing of the position of such as roll seam geometric profile, material sensors and feature, each rolling-mill housing or mill speed and material velocity, when can determine accordingly, loading moment or with which type of degree affects relevant drive unit.The analog value comprising the height of foreseeable loading moment can such as be determined by the model of milling train.Then, according to this predictable can in this wise to being supplied to the volume electric current of drive unit to carry out autotelic pilot control, that is, reduce and occur that the rotational speed of driving unit be associated reduces with loading moment.Therefore the roll of drive unit or each rolling-mill housing and then the controlled operation of whole equipment is guaranteed.Thus, no longer due to the roll of each drive unit or different rolling-mill housing the strong fluctuation of speed and cause various stretching or pressure load.Thus reduce the deviation on thickness and avoid the fracture of rolled piece as much as possible or form knotting.Milling train there is multiple rolling-mill housing with independent drive unit and each drive unit by individually pilot control time, particularly relate to this situation.
Foreseeable loading moment is by correcting the actual value of e.g. particularly torque value, tachometer value and the acceleration actual value derived thus.Thus, dynamic calibration is realized when the position of band head.Can the degree of additionally dynamic calibration loading moment by observing and nursing.In the repetitive process of same material, realize repeatedly optimizing the correction of unused time point and repeatedly correcting the degree of foreseeable loading moment by the assessment between the pilot control value of foreseeable loading moment and current loading moment.
In a preferred embodiment of the invention, pilot control is based on material.This means, this first also consider material parameter, such as hardness or its impact factor, as temperature and material type, foreseeable loading moment has much impacts to relevant drive unit, thus carries out corresponding pilot control and and then the electric current of change supply based on this to drive unit.
In order to drive unit is carried out pilot control make current jump formula when there is loading moment raise time, system temporarily to occur loading moment make a response.But its shortcoming is, supply, form the such great-jump-forward change of the electric current of moment time, except mechanical features, the characteristic of current transformer also has impact at the response characteristic of corresponding operating point on whole system.
In order to be avoided, electric current does not increase jumping characteristic, but rise ground, increase continuously, especially in time window, for carrying out pilot control to drive unit ramp type.Thus, the corresponding torque of drive unit also just changes only relatively lentamente, namely ramp type.Differently, this slope also can be preset as stepped.
At this, measure the slope on slope being used for torque like this, namely drivetrain remain on definition and at any time in all reproducible state.Therefore, whole system is better controlled, and each drive unit and especially whole system all present the time response significantly improved.Thus ensure that the recyclability of the performance of whole system.The corresponding ramp type of the restricted passage current rating that electric current rises raises and realizes, and can indirectly by direct torque also or rotating speed pilot control realize.
The slope on slope depends on the power of rectifier.At this, the layout of rectifier type, operating point and rectifier, the size of electric current especially to be implanted, rotating speed and voltage reserve are key factors.When high reproducibility, slope corresponds to the mean value that can realize at regulation operating point.For reproducibility completely, the slope of slope or ladder must be less than possible greatest gradient at this, and this greatest gradient can be supplied to rectifier at all regulation operating points.The rising of rated value does not make the attainable power transition of rectifier rise to voltage limit when Rated motor voltage and peak power.Which eliminate the deviation of the rectifier characteristic in different operating point.Point-device and foreseeable pilot control can be realized thus when high speed.By interpolation method, except dynamically illustrating that the loading moment of appearance is for dynamically to correct except positions of materials and the load of machinery systems, reproducible operation also allows to carry out point-device analysis to durability.
In order to carry out pilot control without rotating speed deviation before turn and afterwards, such design slope, namely the drive unit torque realized by elevated currents is risen and be result in the deviation of symmetrical effect, therefore eliminate until occur the speed of load rise and after there is load until set up the delay of torque completely.When load and the constant slope of great-jump-forward, the connection of torque has half to realize before there is load torque, and second half realizes after there is load torque.
When there is load until when fully the rise time of connecting between torque does not exceed the value of frame spacing divided by material velocity, terminated pilot control before material enters into follow-up frame.When there being the deviation of symmetrical impact, it corresponds to material through necessary DT Doubling Time two frames.
In conjunction with the following description to the embodiment that connection with figures elaborates, above-mentioned characteristic of the present invention, feature and advantage and the type realized thereof and mode are more clear and apparent clearly.
Accompanying drawing explanation
For the further embodiment described in reference diagram of the present invention.There is shown schematic schematic diagram:
Fig. 1 is the view with the rolling-mill housing that is disposed in order and the mill train for the independent drive unit of each rolling-mill housing,
Fig. 2 is a chart, illustrated therein is the load torque acted on respectively on the drive unit of rolling-mill housing and the electric current being supplied to this drive unit change curve in time,
Fig. 3 is a chart, when illustrated therein is that value works shown in figure 2, and the corresponding rotating speed change curve in time of drive unit.
Detailed description of the invention
Fig. 1 shows the sectional view of the mill train 2 with the rolling-mill housing 4 of arranging successively each other, and wherein this rolling-mill housing is used for processing rolled piece 6.Schematically show eight rolling-mill housing of arranging successively each other 4 in FIG, rolled piece 6 is through these rolling-mill housing, and such as, bar as rolled piece is rolled into wire rod.
Each rolling-mill housing 4, to there being an independent drive unit 8 comprising motor 10 and transmission device 12, wherein illustrate only drive unit 8 in the accompanying drawings for clarity.By the rectifier 14 with control unit 16, it is the electric current I that drive unit supply is wished.Each rolling-mill housing 4 also comprises at least one roll 13, and it is driven with the rotating speed n preset by corresponding drive unit 8, and this rotating speed such as obtains from passage table.
If rolled piece 6 appears on the roll 4 of rolling-mill housing 13, so on the drive unit 8 of corresponding rolling-mill housing 13, be applied with loading moment M
l.This loading moment M
lcause now the decline of the rotating speed n of the drive unit 8 of being correlated with.According in the milling train 2 of prior art, correspondingly rotating speed n is upwards revised, thus after the time delay determined, the drive unit 8 of relevant rolling-mill housing 4 has the rotating speed n of expection again.But especially there is loading moment M in the characteristic of drive unit 8
lalways can not regenerate afterwards.Based on consequent rotating speed deviation with fluctuate with the stretching be associated, the quality of rolled products always can not meet the demands.In other words, the dynamic property of drive unit depends on the loading moment M of appearance
lwith the performance of adjuster.But these performances are always enough accurately not foreseeable, and only can regenerate conditionally based on the correlation with operating point.
According to the present invention, reduce the loading moment M by generation effect on drive unit 8
lthe rotating speed caused declines, and this realizes thus, and the electric current I that namely drive unit 8 is supplied in view of it by control unit 16 and rectifier 14 carrys out pilot control.
First need to know or to estimate loading moment M to realize this target
l, that is loading moment is foreseeable value.Such as according to the model of milling train 2 and the known value of rolled piece 6 to be rolled, the loading moment M of effect on the drive unit 8 of rolling-mill housing 4 can be determined
lcorresponding predicted value.At this, measure this predicted value in time, thus predict the loading moment M of the drive unit 8 for the determination of rolling-mill housing 4 in the mode of time changing curve
l.Depend on this foreseeable loading moment M
l, then by supply to drive unit, form the electric current I of moment and achieve roll torque pilot control to drive unit 8 like this, namely the rotating speed of drive unit 8 is declined and compensates.The drive unit of more than one rolling-mill housing 4, the loading moment M relevant to motor measured in time is differently driven for preferred version before
lshow the summation of each roll torque relevant to motor.
Only illustratively be two rolling-mill housing 4 with each corresponding with it drive unit 8 in fig. 2 and show the loading moment M occurred thereon
land being supplied to the time changing curve of electric current I of this drive unit 8, this electric current I has corresponding controlling value, the current rating namely in time changing curve.Curve 18 shows at time t
2time loading moment M on the drive unit 8 of the first rolling-mill housing 4
lgreat-jump-forward change, and curve 20 represents the loading moment M when time point t7 on the drive unit 8 of the second rolling-mill housing 4
ljump.
In order to be decreased through the loading moment M of effect on drive unit 8
lthe rotating speed of the drive unit 8 caused declines, and passes through supply to the targetedly pilot control of the electric current I of drive unit realization to drive unit 8 by means of control unit 16 and rectifier 14.For this reason, at time point t
0, namely there is loading moment M
lincrease the rated value of electric current I with regard to ramp type, this is as shown in curve 22 before.Then, electric current I from but be also in and occur loading moment M
ltime point t
2between time point t
1start to follow with less time delay, this is as shown in curve 24.The slope of current rating and electric current I measures in this wise at this; namely drive unit 8 remains in stable state, and this state is also renewable, that is; the rising of current rating and electric current I so slowly realizes, and makes drive unit 8 have the operation characteristic defined.Especially the slope of electric current I is designed in this wise, is namely occurring loading moment M by the torque rising half of the drive unit 8 of electric current rising realization
lsecond half realizes after this before.This means, from t
1to t
2the time interval with from t
3to t
4the time interval equal.Reaching time point t
4time, loading moment M
lvalue equal the value of the torque M of drive unit 8.
After a certain time period, such as, when inserting rolled piece 6, this situation appears in the second rolling-mill housing 4, and causes loading moment M there
ljump in various degree, it is as shown in curve 20.This corresponding loading moment M
lcan be predicted by known parameter again.At this, in order to be decreased through loading moment M
lthe rotating speed of the drive unit 8 caused declines, also by time point t
5and t
8between the current rating that increases of ramp type ground, it, as shown in curve 26, realizes the pilot control to drive unit 8.At this, after corresponding time delay, also at t
6and t
9between interval in increase electric current I according to curve 28 ramp type like this, namely drive unit 8 remains in stable state, and is occurring loading moment M by the electric current torque rising half of drive unit 8 realized that rises
lsecond half realizes after this before.
Now, figure 3 illustrates the rotation speed change curve of two drive units 8 in corresponding rolling-mill housing 4.Curve 30 below shows the time changing curve of the rotating speed n of the drive unit 8 of the first rolling-mill housing 4.By to supplying to the pilot control of the electric current I of drive unit 8, first from time point t
1start increase torque M as described above and therefore also improve rotating speed n.This straight hair is raw until time point t
2, at this time point loading moment M
lto drive unit 8 generation effect, it causes rotating speed to drop under the rotating speed n of expection now.By at time point t
2and t
4between further improve electric current I and torque M, rotating speed n is brought to the value of expection.
Corresponding change curve illustrates for the curve 32 of the drive unit 8 of the second rolling-mill housing 4.
Curve trend according to rotating speed n can identify, and the rotating speed of drive unit 8 descends through corresponding pilot control to compensate.The overlapping torque ripple disappeared gradually is not shown for the object simplified.By the pilot control to the pilot control of electric current I and the predefined rising be associated with it of electric current I, at this with the form on slope, during the dynamic operation of drive unit, guarantee that it is defining and running in reproducible state all the time, make the fracture avoiding the formation of knotting or rolled piece in the operation of rolling.Therefore, also pilot control influential system characteristic better can be passed through, with the loading moment M to appearance
lcompensate.
Although the present invention is illustrated further by preferred embodiment in detail and describes; but the present invention not to limit by disclosed enforcement and other variant can be derived by those skilled in the art, and can not to impact protection scope of the present invention.
Claims (8)
1. the method for the treatment of the rolled piece (6) in milling train (2), described milling train has the rolling-mill housing (4) of drive unit (8) with at least one, wherein, in order to be decreased through loading moment (M that go up generation effect at described drive unit (8), that can predict
l) rotating speed of described drive unit (8) that causes declines, by flow to described drive unit (8), the electric current (I) that forms moment realizes the roll torque pilot control of described drive unit (8).
2. method according to claim 1, wherein, described milling train (2) is elongated products milling train and has multiple rolling-mill housing (4), described rolling-mill housing with each independent drive unit (8) for high mill speed, and when each described drive unit (8) the individually described loading moment (M that limited by the operation of rolling of pilot control
l).
3. method according to claim 1 and 2, wherein, realizes described pilot control based on material.
4., according to method in any one of the preceding claims wherein, wherein, in order to carry out pilot control to described drive unit (8), great-jump-forward ground raises described electric current (I).
5. according to the method in any one of claims 1 to 3, wherein, in order to carry out pilot control to described drive unit (8), ramp type ground or stepwise raise described electric current (I).
6. method according to claim 5, wherein, the slope in the trend on slope depends on the power of rectifier characteristic by reduction and measures as follows, and namely described drive unit (8) provides performance that is high or that can regenerate completely.
7. the method according to claim 5 or 6, wherein, designs this slope as follows in order to eliminate remaining speed discrepancy in time, namely after there is load until described loading moment (M
l) set up completely, at loading moment (M
l) and realized by described pilot control, the torque of described drive unit (8) rise between deviation to until there is described loading moment (M
l) time described revolution difference compensate.
8. the method according to claim 6 or 7, wherein, by assessment with the rotary speed actual value of described pilot control form acquisition or torque actual value, to the described loading moment (M that can predict
l) correct.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12178196.7 | 2012-07-27 | ||
| EP12178196.7A EP2689864A1 (en) | 2012-07-27 | 2012-07-27 | Method for processing milled goods in a rolling mill |
| PCT/EP2013/062141 WO2014016043A1 (en) | 2012-07-27 | 2013-06-12 | Method for processing rolling stock in a rolling mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104428075A true CN104428075A (en) | 2015-03-18 |
| CN104428075B CN104428075B (en) | 2016-07-27 |
Family
ID=46845596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380036366.8A Expired - Fee Related CN104428075B (en) | 2012-07-27 | 2013-06-12 | The method of process rolled piece in milling train |
Country Status (3)
| Country | Link |
|---|---|
| EP (2) | EP2689864A1 (en) |
| CN (1) | CN104428075B (en) |
| WO (1) | WO2014016043A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107716564A (en) * | 2017-10-27 | 2018-02-23 | 宝钢特钢韶关有限公司 | Wire and rod continuous rolling rolled piece detection method and detection means |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1026936C (en) * | 1990-10-02 | 1994-12-07 | 东芝株式会社 | Method and apparatus for controlling speed of motor |
| DE19624717A1 (en) * | 1995-07-31 | 1997-02-06 | Gfm Gmbh | Process for regulating the rolling stock through a continuous rolling mill |
| CN1174447A (en) * | 1996-08-17 | 1998-02-25 | Sms舒路曼-斯玛公司 | Regulating method |
| CN1239909A (en) * | 1996-12-20 | 1999-12-29 | 西门子公司 | Roll stand drive arrangement |
| US6311532B1 (en) * | 1997-06-23 | 2001-11-06 | Siemens Aktiengesellschaft | Method and device for reducing or compensating rotational speed losses during insertion or rolling stock in a roll stand |
| CN1803326A (en) * | 2006-01-25 | 2006-07-19 | 冶金自动化研究设计院 | Control system for suppressing impact speed drop and torsional oscillation of rolling mill transmission system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE757704C (en) | 1937-10-10 | 1953-03-23 | Siemens Schuckertwerke A G | Device for speed control of the drive motors of a continuous roller line |
| JPS6099416A (en) | 1983-11-04 | 1985-06-03 | Mitsubishi Electric Corp | Speed control device of rolling mill |
| JPH04361813A (en) | 1991-06-07 | 1992-12-15 | Kobe Steel Ltd | Method for controlling biting speed of rolled stock in rolling line |
| JPH06218416A (en) | 1993-01-22 | 1994-08-09 | Kawasaki Steel Corp | Method and device for controlling speed of rolling mill |
| JP2005046898A (en) | 2003-07-31 | 2005-02-24 | Jfe Steel Kk | Rolling mill speed control method |
| JP2005254289A (en) | 2004-03-12 | 2005-09-22 | Jfe Steel Kk | Method for controlling speed of rolling mill |
| DE102009050710B4 (en) | 2009-10-26 | 2016-08-04 | Sms Group Gmbh | Wire rolling stand with single drive |
-
2012
- 2012-07-27 EP EP12178196.7A patent/EP2689864A1/en not_active Withdrawn
-
2013
- 2013-06-12 EP EP13729682.8A patent/EP2861360B1/en not_active Revoked
- 2013-06-12 CN CN201380036366.8A patent/CN104428075B/en not_active Expired - Fee Related
- 2013-06-12 WO PCT/EP2013/062141 patent/WO2014016043A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1026936C (en) * | 1990-10-02 | 1994-12-07 | 东芝株式会社 | Method and apparatus for controlling speed of motor |
| DE19624717A1 (en) * | 1995-07-31 | 1997-02-06 | Gfm Gmbh | Process for regulating the rolling stock through a continuous rolling mill |
| CN1174447A (en) * | 1996-08-17 | 1998-02-25 | Sms舒路曼-斯玛公司 | Regulating method |
| CN1239909A (en) * | 1996-12-20 | 1999-12-29 | 西门子公司 | Roll stand drive arrangement |
| US6311532B1 (en) * | 1997-06-23 | 2001-11-06 | Siemens Aktiengesellschaft | Method and device for reducing or compensating rotational speed losses during insertion or rolling stock in a roll stand |
| CN1803326A (en) * | 2006-01-25 | 2006-07-19 | 冶金自动化研究设计院 | Control system for suppressing impact speed drop and torsional oscillation of rolling mill transmission system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107716564A (en) * | 2017-10-27 | 2018-02-23 | 宝钢特钢韶关有限公司 | Wire and rod continuous rolling rolled piece detection method and detection means |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2861360A1 (en) | 2015-04-22 |
| CN104428075B (en) | 2016-07-27 |
| EP2689864A1 (en) | 2014-01-29 |
| WO2014016043A1 (en) | 2014-01-30 |
| EP2861360B1 (en) | 2016-11-02 |
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Effective date of registration: 20160729 Address after: Germany Erlangen Patentee after: PRIMETALS TECHNOLOGIES GERMANY GMBH Address before: Munich, Germany Patentee before: Siemens AG |
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