US20020046588A1 - Apparatus for reducing tension variations in a metal strip - Google Patents

Apparatus for reducing tension variations in a metal strip Download PDF

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Publication number
US20020046588A1
US20020046588A1 US09/930,896 US93089601A US2002046588A1 US 20020046588 A1 US20020046588 A1 US 20020046588A1 US 93089601 A US93089601 A US 93089601A US 2002046588 A1 US2002046588 A1 US 2002046588A1
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Prior art keywords
coiler
roll
strip
eccentricity
amplitude
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Abandoned
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US09/930,896
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English (en)
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Michael Clark
Anthony Marples
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Publication of US20020046588A1 publication Critical patent/US20020046588A1/en
Priority to US10/619,166 priority Critical patent/US6810706B2/en
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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
    • B21B37/48—Tension control; Compression control
    • B21B37/52—Tension control; Compression control by drive motor control
    • B21B37/54—Tension control; Compression control by drive motor control including coiler drive control, e.g. reversing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/003—Regulation of tension or speed; Braking
    • 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
    • B21B1/32—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 in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/34—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 in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
    • 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
    • B21B37/48—Tension control; Compression control
    • 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
    • B21B39/006—Pinch roll sets
    • 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

Definitions

  • the present invention relates to apparatus for reducing tension variations in a metal strip being coiled and/or uncoiled.
  • it relates to the coiling and/or uncoiling of metal strips in the furnace coiling/uncoiling drums of a Steckel type rolling mill in which the metal strip passes from the uncoiling drum to the coiling drum via a reduction stand. It is also applicable to other mill types, both reversing and non-reversing, for steel and other metals.
  • U.S. Pat. No. 4,905,491 discloses a method for reducing the cyclic tension changes caused by coil eccentricity. This method relies on a tension measuring device and the analysis of the variations in this tension to generate control signals to either the coiler motor torque or the roll gap.
  • the inertia of the coiler motor plus the coiler drum in a conventional Steckel mill is so large that it is not possible to accelerate and decelerate the coiler fast enough to compensate for eccentricity of the coil at conventional Steckel rolling speeds. Therefore the practical application of this patent on a Steckel mill would require that the roll gap is used to control the tension.
  • GB2074138 discloses another method of reducing the tension variations due to eccentricity of the coil. This method uses a sensor to measure the diameter of the coil as it rotates and it applies the signal from this sensor to the motor speed control. It is simple to show by calculation that the inertia of a conventional Steckel mill coiler motor and drum is so large that it would not be possible to accelerate and decelerate the coiler/uncoiler fast enough to follow the signal from the coil diameter sensor.
  • the apparatus includes a first coiler and second coiler and a moveable roll, a strip path being defined between a first location and a second location, movement of the movable roll changing the length of the strip path, the apparatus further including a measurer of the angular position of at least one of the coilers and an actuator for the moveable roll, the actuator being provided with signals from the measurer, the position of the moveable roll being defined, at least in part, as a function of the angular position of at least one of the coilers.
  • both the first coiler and the second coiler are provided with a measurer of the angular position of the coiler.
  • one or both of the coilers are fitted with angular position transducers to measure the angular position of the coiler or coilers during coiling or uncoiling.
  • the first and/or second coilers are preferably coiler drums.
  • the first and/or second coilers are provided with a slot for receiving an end of the metal strip in use.
  • the slot is defined as a part of a chord to the circular cross section of the coiler.
  • the angular position of a slot in the first and/or second coilers is measured.
  • the invention may provide that one or more of the rolls are moveable pinch rolls.
  • the rolls may be fitted with position transducers and/or roll position controllers, such as hydraulic actuators.
  • a control system which controls the position of the rolls in response to the signals is also provided.
  • the control system may control the position of the rolls in response to information from the measurer or measurers alone. It is preferred, however, that the control system controls the position of the rolls in response to that information in combination with further information.
  • a database may be provided to store the further information.
  • the information and further information are combined to give an overall control signal to the roll position controllers.
  • a moveable roll is provided between a coiler and a rolling mill stand or other processing stage.
  • a roll is provided between each coiler and a rolling mill stand or other process stage.
  • the movement of the roll changes the length of the strip path between a coiler and the rolling mill stand or other processing stage.
  • the first location may be a rolling stand or other process stage.
  • the second location may be the coiler, or more particularly the part of the coiler at which the metal strip comes into contact with the coiler, or alternatively the location at which the metal strip comes into contact with a part of the metal strip coiled on the coiler. It is preferred that the second location is a further roll, particularly a deflector roll.
  • the first and second locations are at fixed positions and/or in a fixed configuration relative to one another.
  • at least one further roll is provided between a coiler and a roll.
  • a further roll is provided between each coiler and its respective rolls.
  • the further roll is a deflector roll.
  • the movement of the roll may change the length of the strip path between the further roll and the rolling mill stand or other process stage.
  • the apparatus may include a rotational speed measurer for one or more of the coilers.
  • signals from the rotational speed measurer are provided to the control system.
  • the rotational speed measurer may be the same as the angular position measurer.
  • the apparatus may be provided with a tension measurer for the strip.
  • the apparatus may be provided with a load measurer for the moveable roll. Preferably signals from the tension measurer and/or load measurer are provided to the control system.
  • the apparatus may include a strip coil diameter measurer, preferably one for each coiler. Preferably signals from the strip coil diameter measurer are provided to the control system.
  • two moveable roll and their associated controllers are provided on a reversing mill, one reducing the tension variations of the uncoiling product and one reducing the tension variations of the coiling product.
  • a method of handling a metal strip comprising providing a first coiler and a second coiler in a metal strip, passing the metal strip from a first coiler to a second coiler, a strip path for the metal strip being defined between a first location and a second location, a moveable roll contacting the metal strip between the first location and second location, the method including measuring the angular position of at least one of the coilers and moving the moveable roll so as to change the length of the strip path, the moveable roll being moved as a function of the angular position of at least one of the coilers.
  • the method measures the angular position using one or more angular position transducers.
  • the metal strip is coiled and/or uncoiled on coiler drums.
  • the method measures the angular position of the location at which the lead end of the metal strip engages the coiler.
  • the method measures the position of the moveable roll or rolls using position transducers.
  • the moveable rolls are moved using roll position controllers, particularly hydraulic actuators.
  • the roll position controllers are controlled by a control system.
  • the control system preferably receives information from the measurer or measurers.
  • the control system receives further information. It is preferred that the control system controls the position of the rolls in response to the information in combination with the further information.
  • the information and further information are combined to provide an overall control signal to the roll position controller or controllers.
  • the further information may be information about one or more of the thickness of the strip, the material forming the strip, the temperature of the strip, the number of passes of the strip through the rolling mill stand or other process stage, the number of laps of the strip on the coiler, the geometry of the strip length, the geometry of the moveable roll to the rolling mill stand or other process stage, the geometry of the moveable roll to the further roll, the response time of the moveable roll and the speed of rotation of the coiler.
  • the movement of the roll changes the length of the strip path between a coiler and the rolling mill stand or other process stage. It is particularly preferred that the movement of the roll changes the length of the strip path between a rolling mill stand or other process stage and a further roll.
  • the movement of the roll is preferably effected to adjust for the profile of the eccentricity in the coil.
  • the profile may include an account of the predicted amplitude of the eccentricity in the coil and/or of the predicted duration of eccentricity in the coil.
  • the invention may also provide a method which calculates the predicted amplitude of the eccentricity in the coil.
  • the predicted amplitude of the eccentricity in the coil may be calculated as a function of the thickness of the strip and/or of the material forming the strip and/or of the temperature of the strip and/or of the number of passes of the strip through the rolling mill stand or other process stage and/or the number of laps of the strip on the coiler.
  • the method provides for a pattern of roll movement over time.
  • the pattern of roll movement is calculated.
  • the pattern is cyclic.
  • the system may calculate the pattern of roll movement which is required to compensate for the difference in speed between the mill and the circumferential speed of the coiler.
  • the pattern of roll movements is preferably applied by the roll position controllers.
  • the invention may provide a method of operation which causes the roll to follow a predetermined pattern of movements according to the angular position of the coiler. In this way the tension variations due to the coil eccentricity can be significantly reduced provided that the anticipated amplitude of the coil eccentricity is correct.
  • the invention may further provide for the storage of tables of values of the predicted eccentricity amplitude according to the grade, thickness and temperature of the material being rolled.
  • the invention may further provides one or more methods by which the system the corrects the calculated eccentricity amplitude to give a corrected eccentricity amplitude.
  • the method may correct the calculated eccentricity amplitude by measuring the rotational speed of the coiler. A decrease in speed of the coiler corresponding to the strip being applied over the location of eccentricity preferably results in a corrected eccentricity amplitude which is greater than the calculated eccentricity amplitude. Preferably an increase in the rotational speed of the coiler at an angular position where the strip is applied over the location of the eccentricity results in a corrected eccentricity amplitude which is lower than the calculated eccentricity amplitude.
  • the calculated eccentricity amplitude may be corrected by measuring the tension in the strip and/or by measuring the load on the moveable roll.
  • the method provides that if the tension in the strip increases and/or the load on the roll increases as the strip is applied over the position of the eccentricity then the corrected eccentricity amplitude is greater than the calculated eccentricity amplitude.
  • the method provides that if the tension is reduced and/or the load on the roll is reduced as the strip is applied over the location of the eccentricity then the corrected eccentricity amplitude is less than the calculated eccentricity amplitude.
  • the calculated eccentricity amplitude may be corrected by measuring the coil diameter and particularly the coil diameter for the eccentricity.
  • the invention may further provide for the signal to the roll position controllers to be phase advanced, preferably in order to compensate for the response time of the roll.
  • the phase advance may also compensate for the speed of rotation of the coiler. Preferably the speed of rotation of the coiler is calculated from measurements made by the measurer.
  • the phase advance may also be compensated to account for the geometry of the system, particularly the strip length between the coiler and moveable roll.
  • the operation of the pinch roll units in position control overcomes the inertia problems associated with operating these units in force or pressure control or with a spring because the force required to overcome the inertia of the roll and move it to a new position is provided by the hydraulic actuator and not by the strip.
  • the method of moving the pinch roll purely as a function of the angular position of the coiler drum also avoids any problems associated with tension measurement.
  • the method of moving the pinch roll as a function of the angular position of the coiler drum also allows the signal to be phase advanced to compensate for the response time to the pinch roll system.
  • an apparatus for the coiling/uncoiling of metal strip which includes a moveable roll in the strip path such that movement of this roll changes the length of the strip path to the coiler/uncoiler and which further includes a transducer measuring the angular position of the coiler/uncoiler and which further includes the position of the moveable roll being automatically controlled as a function of the coiler/un coiler angular position.
  • the pattern of movement of the moveable roll as a function of the coiler/un coiler angle may be chosen to reduce the tension variations caused by eccentricity of the coil diameter.
  • the pattern of movement of the pinch roll as a function of the angular position of the coiler/uncoiled may be calculated in advance of the coiling operation function of the anticipated eccentricity amplitude of the coil and the geometry of the moveable roll.
  • the anticipated amplitude of the eccentricity may be based on the material type and/or the material thickness and/or the material temperature and/or the number of laps on the coil.
  • An offset may be added to the measured coiler/uncoiler angular position in order to phase advance the signal to compensate for the response time of the moveable roll.
  • the offset may be a function of the coiler drum speed.
  • the moveable roll may be moved by a hydraulic cylinder.
  • a position transducer may be used to measure the position of the roll.
  • An electronic controller and a servo valve may be used to control the position of the pinch roll according to a reference position.
  • the measurements of the coiler/un coiler speed may be used to increase or decrease the predicted coil eccentricity amplitude and thus to modify the amplitude of the movements of the moveable roll.
  • Measurements of strip tension may be used to increase or decrease the predicted coil eccentricity amplitude and thus to modify the amplitude of the movements of the moveable roll.
  • FIG. 1 is a diagram showing a side view of the head of a strip entering the slot in the coiler drum
  • FIG. 2 is a diagram showing a side view of the bending of the head end of a strip around the corner of the coiler drum slot after an initial rotation of the coiler drum following threading;
  • FIG. 3 is a diagram showing a side view of the coiler drum after one complete lap has been threaded showing the eccentricity in the coil diameter caused by the bump where the strip bends around the corner of the slot in the coiler drum;
  • FIG. 4 is a diagram showing the side view of a Steckel rolling mill
  • FIG. 5 is a diagram showing a schematic representation of the coiler drum, the pinch roll unit, the transducers and the control system;
  • FIG. 6 is a graph showing the results of a calculation to illustrate how the strip tension varies if the pinch roll position is kept constant during coiling with an eccentric coil
  • FIG. 7 is a graph showing the results of a calculation to illustrate how the strip tension varies if the pinch roll position is moved as a function of the coiler angle as provided for in this invention
  • Steckel mills and other mill types are often employed in processing of metal strips.
  • the metal strip is passed from one coiling drum to another via a processing stage, such as a thickness reduction stage. Reduction stands are often used for this task.
  • the coiling drums often provide re-heating of the metal strip to maintain its workability. During each pass the lead end of the strip has to be introduced to the coiling drum in a manner which facilitates subsequent coiling of the strip on to the coiling drum.
  • FIGS. 1 through 3 The process of threading a conventional steckel coiling drum is illustrated in FIGS. 1 through 3.
  • the head end of the metal strip 6 is diverted by the deflector gate 7 into the slot 9 in the coiling drum 8 .
  • the drum 8 starts to rotate about its axis 10 so that the metal strip is bent around the corner of the slot and under the deflector roll 2 b .
  • Further rotation of the drum is illustrated in FIG. 3 with one complete lap is shown on the drum together with the start of the next lap.
  • the deflector gate 7 is normally moved out of the way once the strip has threaded the drum, The eccentricity in the coil can be clearly seen at the point 11 .
  • the bump is caused by the bending of the strip around the corner of the slot.
  • the corner of the slot is normally manufactured with a radius in order to reduce the magnitude of this bump.
  • the bend radius of the metal strip is effected by many factors including its thickness, material grade and temperature. Consequently the radius on the corner of the slot can only match certain conditions and a bump will still be formed for other thicknesses, grades or temperatures.
  • the coiler drums are usually driven by electric motors and it is normal practise when coiling to control the torque applied by these electric motors in such a way that in steady state the correct tension is applied to the strip and the torque due to the strip tension balances the torque due to the motor.
  • FIG. 1 shows one embodiment of an apparatus which comprises a pinch roll unit ( 3 a or 3 b ) employed in removing tension variations in the Steckel mill ( 4 ) rolling process.
  • the pinch roll unit ( 3 a ) mounted on the entry side of the mill has a similar counterpart on the opposite side of the mill ( 3 b ).
  • the steel strip passes from the entry coiling furnace (la) to the exit coiling furnace ( 1 b ) via the entry deflector roll ( 2 a ), the entry pinch roll unit ( 3 a ) through the mill stand ( 4 ), the exit pinch roll unit ( 3 b ), exit deflector roll ( 2 b ) and into the exit coiling furnace (lb).
  • the mill ( 4 ) reverses and the process is repeated in the opposite direction.
  • the sequence of forward and reverse passes finishes when the strip is reduced in thickness to the required final thickness.
  • the principal of operation is that the tension of the strip between the reduction stand ( 4 ) and the coiling or uncoiling drums (la) and (lb) can be controlled by allowing the upper roll in the pinch roll units ( 3 a ) and ( 3 b ) to exert a controlled force on the strip. This can be done by controlling the pressure in a hydraulic or pneumatic cylinder attached to the upper pinch roll assembly in the pinch roll units. Alternatively an electric motor or a spring could be used. Unfortunately a practical pinch roll unit has to be able to withstand very high forces on thick and wide strips and consequently has a high inertia.
  • FIG. 5 is a diagrammatic representation of a specific embodiment of the invention showing one of the coiler drums and pinch rolls.
  • the angular position of the drum ( 8 ) is measured by a suitable transducer ( 12 ) such as an encoder or resolver.
  • the electronic unit ( 13 ) adds an amount on to the measured angle to phase advance the signal in order to compensate for various factors.
  • the amount of phase advance required depends on both the response time of the pinch roll unit and the speed of rotation of the coiler drum, which can be calculated from the angular position measurement.
  • the electronic unit ( 14 ) calculates the position of the pinch roll which will compensate for a predetermined amplitude of eccentricity of the coil. This calculation is based on the geometry of the pinch roll ( 18 ) relative to the mill ( 4 ), the deflector roll ( 2 b ) the expected amplitude of the eccentric bump in the coil diameter and the angular position of the slot in the coiler drum ( 9 ). The required pinch roll position for any given time is then passed to the pinch roll position controller ( 15 ). This electronic unit takes the measured pinch roll position from the position transducer ( 16 ) and produces a signal to the servo valve ( 17 ) to move the pinch roll actuator cylinder ( 19 ) and hence move the pinch roll ( 18 ). This position changes with time as necessary.
  • FIG. 6 is a graph to illustrate the results of a calculation to show the strip tension variation when the pinch roll is not moved.
  • the lower graph shows the pinch roll position and the upper graph illustrates the very large tension variations which are caused by the eccentricity in the coil diameter.
  • the pattern of tension variations repeats once for each complete revolution of the coiler drum.
  • FIG. 7 is a graph to illustrate the results of a calculation to show the strip tension variations when the pinch roll is operated in a manner according to this invention.
  • the lower graph shows the pinch roll position. This pattern repeats once for each revolution of the coiler drum.
  • the top graph shows the pattern of tension variations in the strip. It is clear that the amplitude of the tension variations when the pinch roll is operated according to the invention are very much reduced compared with those in FIG. 6.
  • the required pattern of pinch roll movement as a function of the coiler drum angle is predetermined according to the geometry of the apparatus and the anticipated coil eccentricity amplitude.
  • the operation of the invention can be improved by making the anticipated amplitude of the eccentricity of the coil a function of the strip material type, strip thickness, strip temperature, the number of passes of the strip through the process and the number of laps on the coil, since these factors have an effect on the bend radius of the strip around the corner of the coiler drum slot and the amplitude of the bump in the coil diameter as a result.
  • provision in the invention is made for automatically adjusting the movement pattern for the pinch roll as a function of these variables.
  • the invention can be extended to include feed back to the calculation process of measured variables for the operation. It is possible to use a coiler speed signal and/or a tension measurement signal and/or a coil diameter measurement signal to automatically modify the coil eccentricity amplitude which is used in the calculation of the required pinch roll movement pattern.
  • One possible method of obtaining a tension measurement signal would be to install load cells above the detector rolls 2 a and 2 b . If the true coil eccentricity amplitude is larger than the predicted amplitude then the tension will tend to increase as the strip passes over the coiler drum slot whereas if the predicted amplitude of the coil eccentricity is greater than the actual amplitude then the movement of the pinch roll will be too large and the tension will tend to decrease as the strip passes over the coiler drum slot. Consequently a positive correlation between the tension signal and the pinch roll movement would indicate that the amplitude of the eccentricity is greater than that originally predicted whereas a negative correlation would indicate that it is smaller than originally predicted. In either case the predicted amplitude can be adjusted accordingly.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Physical Vapour Deposition (AREA)
US09/930,896 2000-08-17 2001-08-15 Apparatus for reducing tension variations in a metal strip Abandoned US20020046588A1 (en)

Priority Applications (1)

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US10/619,166 US6810706B2 (en) 2000-08-17 2003-07-10 Apparatus for reducing tension variations in a metal strip

Applications Claiming Priority (2)

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GB0020160.8 2000-08-17
GBGB0020160.8A GB0020160D0 (en) 2000-08-17 2000-08-17 Steckel furnace coiler and apparatus therefor

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US10/619,166 Expired - Fee Related US6810706B2 (en) 2000-08-17 2003-07-10 Apparatus for reducing tension variations in a metal strip

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EP (1) EP1180402B1 (de)
AT (1) ATE410247T1 (de)
DE (1) DE60136039D1 (de)
GB (1) GB0020160D0 (de)

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US20100101293A1 (en) * 2006-08-12 2010-04-29 Karl Hoen Coiling furnace
CN1984729B (zh) * 2004-07-07 2010-06-16 奥地利钢铁联合企业阿尔卑斯工业设备制造有限公司 用于减少斯特克尔式轧机内的振动的方法及装置
CN105728494A (zh) * 2016-03-11 2016-07-06 安徽鑫旭新材料股份有限公司 一种铜材挤压成型自动卷绕调压调速系统
CN105750353A (zh) * 2016-03-09 2016-07-13 安徽鑫旭新材料股份有限公司 一种铜材连续挤压成型抽送装置
CN105775862A (zh) * 2016-03-16 2016-07-20 安徽鑫旭新材料股份有限公司 一种铜材挤压成型卷绕速度自适应系统
US9938114B2 (en) * 2012-12-21 2018-04-10 Sms Group Gmbh Method and device for winding a metal strip
CN112191703A (zh) * 2020-10-22 2021-01-08 贵溪市正鑫铜业有限公司 一种防裂纹及表面起皮的铜材连续挤压成型抽送装置
CN113020316A (zh) * 2021-03-31 2021-06-25 上海五星铜业股份有限公司 一种套筒起卷装置

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DE102007005378A1 (de) * 2007-02-02 2008-08-07 Siemens Ag Betriebsverfahren für eine Haspeleinrichtung zum Auf- oder Abhaspeln eines Bandes sowie Steuereinrichtung und Haspeleinrichtung hierzu
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US20040007035A1 (en) 2004-01-15
US6810706B2 (en) 2004-11-02
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EP1180402A3 (de) 2005-01-19
EP1180402A2 (de) 2002-02-20

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