EP3210681A1 - Dispositif et procédé de laminage de matériau en bande à épaisseur variable - Google Patents

Dispositif et procédé de laminage de matériau en bande à épaisseur variable Download PDF

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Publication number
EP3210681A1
EP3210681A1 EP17155391.0A EP17155391A EP3210681A1 EP 3210681 A1 EP3210681 A1 EP 3210681A1 EP 17155391 A EP17155391 A EP 17155391A EP 3210681 A1 EP3210681 A1 EP 3210681A1
Authority
EP
European Patent Office
Prior art keywords
roll
rollers
strip material
dipping
rolling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17155391.0A
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German (de)
English (en)
Other versions
EP3210681B1 (fr
Inventor
Ingolf Günter Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tilgert Walzwerksmaschinenbau GmbH
Bilstein GmbH and Co KG
Original Assignee
Tilgert Walzwerksmaschinenbau GmbH
Bilstein GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tilgert Walzwerksmaschinenbau GmbH, Bilstein GmbH and Co KG filed Critical Tilgert Walzwerksmaschinenbau GmbH
Publication of EP3210681A1 publication Critical patent/EP3210681A1/fr
Application granted granted Critical
Publication of EP3210681B1 publication Critical patent/EP3210681B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/24—Automatic variation of thickness according to a predetermined programme
    • B21B37/26—Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness
    • 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
    • B21B37/50—Tension control; Compression control by looper control
    • 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
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/04—Thickness, gauge
    • B21B2261/05—Different constant thicknesses in one rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/02—Tension
    • B21B2265/08—Back or outlet tension

Definitions

  • the invention relates to a device for rolling strip material with periodically varying strip thickness, wherein the apparatus comprises a roll stand with a set of rollers and a Anstellsystem for adjusting the roll gap of the set of rolls, which roll gap, the strip material is fed with an output thickness on the input side of a spool and from which from the strip material with the respective desired final thickness on the output side of a reel is supplied.
  • the invention relates to a method for operating a device for rolling strip material with periodically varying strip thickness
  • the apparatus comprises a roll stand with a set of rollers and a Anstellsystem for adjusting the roll gap of the set of rollers, wherein the roll gap, the strip material with an output thickness on the input side of a Uncoiler is supplied from and from which the strip material with the respective desired, by the Walzspalt certain end thickness on the output side of a coiler is supplied.
  • a device of the generic type and a method of the generic type are known in the art.
  • strip materials are processed from steel strip material.
  • EP 1 121 990 B2 a generic device known.
  • a possibility is shown in the prior art, with the wound in an economic manner to coils wound metal strips under train, reduced in thickness and then wound up again under train, wherein on the inlet side, a relatively constant strip thickness is provided and a periodic variable strip thickness to be achieved on the outlet side.
  • the present invention seeks to provide an alternative solution for a corresponding device or a corresponding method available, the or the features of the force control of a balance or dancer role and a speed control of the reels no Use makes and achieves a faster automatic adjustment of the roll gap and thus a high quality of a periodically variable band material in adaptation to the high belt speeds, taking into account the different belt speeds at the inlet and outlet of the roll gap.
  • the invention proposes that both between the reel and the rolling stand and between the rolling stand and the coiler, a roller assembly is arranged with a dipping roll around which the strip material is guided, and that the dipping rolls at a constant roll speed of the nip determining rollers of the roll stand in dependence on the employment of Rolls are position controlled to compensate for the changes in speed of the rolling stock at the inlet and at the outlet of the rolling stand, and that the uncoiler and the coiler are operated zuggeregelt.
  • the dipping rollers are position-controlled directly by the adjustment of the nip, which results in a result in a significantly faster correct setting with changing nips and to an exact rolling result.
  • both the uncoiler and the coiler operated zuggeregelt which is particularly advantageous for the use of the device.
  • each support roll for the strip material is arranged, over which the strip material is guided, and that each support roll has a strip length detection device and / or a belt speed monitoring device.
  • the uncoiler and the coiler are provided with a tension measuring device, by means of which the power supply to the drive motors of the reels can be regulated.
  • a machine control which detects the employment of the rollers for a predeterminable nip and by means of which the dipping rollers are position-controllable in dependence thereon.
  • the rolls of the rolling stand which determine the roll gap circulate at a constant roll speed.
  • a method according to the invention is characterized in that both between the uncoiler and the rolling stand and between the rolling stand and the coiler a roller arrangement is arranged with a transverse adjustable to the direction of the strip material dipping roller around which the strip material is guided, wherein the dipping rollers in dependence the position of the rolls of the rolling stand are position-controlled, so that are compensated by the change in position speed changes of the rolling stock at the inlet and at the outlet of the rolling stand, and that the uncoiler and the coiler are operated zugeregelt.
  • the strip length and the speed of the continuous strip material are detected in front of and behind each dipping roller and fed to a controller for the rolling mill Position detection and / or correction of the position of the dipping rollers are generated.
  • the tensile forces of the reels detected and the data collected are fed to a control device by means of which the power supply to the drive systems of the reels is controlled such that the reel train adapted in each case to the requirements of the operating parameters becomes.
  • the setting of the rollers for a predetermined roll gap detected and these are supplied as signals of a control device by means of which the dipping rollers are placed in a roll gap associated in the control as a data pattern stored target movement.
  • the rolls of the roll stand determining the roll gap are operated at a constant roll speed.
  • FIG. 1 In general, a device according to the invention for rolling strip material 1 with periodically variable strip thickness is shown.
  • the device is shown schematically in side view.
  • the direction of passage of the strip material is indicated at 2.
  • the apparatus comprises a roll stand 3, of which the essential components, namely a roll set with two rolls 4 and 5 is shown.
  • a positioning system 6 is shown schematically, which is designed to adjust the roll gap of the set of rollers 4, 5.
  • the nip in particular in FIG. 2 and 3 is clearly visible, is set according to the desired band thickness to be generated.
  • the strip gap 1 the strip material is fed with an initial thickness on the input side of a take-off reel 7 and from the nip of the strip material 1 with the respective desired final thickness on the output side of a reel 8 is supplied.
  • a roller assembly with at least one dipping roller 9 and 10 is arranged.
  • tape guide rollers 13, 14, 15, 16 are arranged, wherein between the guide roller 13 and the take-off reel 7 another guide and guide roller 17 and also between the guide roller 16 and the coiler 8 another guide and guide roller 18th arranged.
  • the continuous strip material 1 is guided around the rollers 17, 13, 9, 14 and 15, 10, 16, 18, respectively.
  • the dipping rollers are seen by means of an actuator 19 and 20 in the direction of the movement arrows 11 and 12 up or down in the plane of the drawing adjustable and are at constant roller speed of the roll gap determining rollers 4, 5 of the roll stand 3 in dependence on the Positioning of the rollers 4, 5 controlled to compensate for the changes in speed of the rolling stock, ie the strip material 1, at the inlet and at the outlet of the roll stand 3.
  • the uncoiler 7 and the reel 8 are operated zuggeregelt.
  • each dipping roller 9 and behind each dipping roll 10 arranged support rollers 13, 14 and 15, 16, over which the strip material 1 is guided each have a tape length detection device and a belt speed monitoring device 21, 22 and 23, 24.
  • the uncoiler 7 and the coiler 8 are each provided with a tension measuring device ZM, by means of which the power supply, which is indicated at 25, 26, to the drive motors MA of the reels 7, 8 is adjustable to the reel train adapted to the requirements of the operating parameters to keep.
  • a machine control 27 which detect and process or store the setting values for the setting of the rolls 4, 5 for a predeterminable roll gap and by means of of which the dipping rollers 9, 10 are position-controllable depending thereon.
  • the machine control communicates 27 with the Anstellsystem 6, with the tape length detection devices and belt speed monitoring devices 21, 22, 23, 24 with the adjusting devices 19, 20 for the dipping rollers 9, 10, so that by means of the machine control 27, the employment of the rollers 4, 5 for the detected predetermined roll gap and the dipping rollers 9, 10 are position-controlled in dependence thereon.
  • roller gap determining rollers 4, 5 of the roll stand 3 are operated at a constant roller speed.
  • the entire area from the uncoiler 7 to the rolling mill 3 is referred to as the lead-in area and the area from the rolling stand 3 to the reel 8 as the lead-out area.
  • the speed changes of the rolling stock (strip material 1) resulting from the rolling of periodically variable strip thicknesses at a constant roll speed in the inlet and outlet of the roll stand 3 are compensated by the movement of the two dipping rolls 9 and 10.
  • the dipping rollers 9, 10 are position-controlled. The control takes place directly from the employment of the rollers 4, 5 in Connection with signals to the rolled strip length.
  • the operation of the two reels 7 and 8 is zuggeregelt.
  • the aim is to derive the movement of the dipping rollers 9, 10 directly from the operating parameters of the rolling process.
  • the direction of movement and the type of movement (constant speed, acceleration or deceleration) of the dipping rollers 9, 10 should be determined by the profile of the rolled material.
  • the movement of the dipping rollers 9, 10 takes place periodically.
  • Each period of the dipping rollers 9, 10 in the inlet and outlet is assigned to exactly one rolling period.
  • the profile of the rolled material of a rolling period L is subdivided into segments.
  • the individual segments each comprise areas with constant strip thickness (a with s 1 and b with s 2 ) and with variable strip thickness (Y and Z).
  • a cross-sectional By determining the individual cross-sections can always be a segment in the outlet a cross-sectional equal and thus masse Swes segment in the roll inlet are assigned (a E and b E and y E and z E with the input tape thickness s).
  • the result for a rolling period L is the mass of the same length in the inlet L E.
  • an average band thickness s M in the outlet can be calculated.
  • This average strip thickness is equivalent to the average speed in the roll outlet (V AM ) and thus also determines the average speed in the inlet (V EM ).
  • the reel speeds in the inlet and outlet then each correspond to these average speeds, as if under constant conditions the incoming strip of thickness s would be rolled down to the thickness s M.
  • the movements of the roller adjustment and thus the rolling profile are also decisive for the current speed.
  • the infeed speed is higher with a low pass decrease than with a large pass decrease.
  • the segments in the outlet can always be cross-sectionally equal segments in the roll inlet assign. From the segments of a complete period, it is then possible to determine both an average speed in the inlet and to determine the movement of the dipping rollers 9, 10 according to segments.
  • the segment b is thicker than the average thickness s M with the thickness s 2 .
  • a constant upward movement of the dipping roller is required.
  • the segment Z is divided into two sections (Z 1 and Z 2 ) by crossing the thickness of the medium-thickness rolled profile. In the area Z 1 , the thickness is reduced to the average thickness. This means that the speed of the outgoing band is accelerated, up to the average speed v AM . At the crossing point, the average speed and the speed of the outgoing band are identical. For the dipping roll this results in that the upward movement of the dipping roll is braked and in the crossing point the roll reaches its top dead center. In the area Z 2 , the thickness continues reduced to the thickness s 1 . The speed of the outgoing belt is accelerated up to the speed v A1 . The dipping roller is accelerated downwards in this area.
  • the segment a is thinner than the average thickness s M with the thickness s 1 .
  • the speed of the outgoing band v A1 is thus greater than the average speed v AM .
  • the dive roller compensates for this by a constant downward movement.
  • the speed of the outgoing band is reduced to the speed v A2 .
  • the downward movement is slowed down to the bottom dead center and in the area Y 2 the dipping roller is accelerated upward again.
  • the control of the dipping roller movement in the inlet follows the dipping roller control of the outlet.
  • the dipping roller movement compensates for this and goes upwards in the segment b E at constant speed and also downwards in the segment a E.
  • the segments Z E and Y E are also characterized by braking, dead center and acceleration. The dead points are each controlled simultaneously with the outlet-side dead centers.
  • the rollers in each case before the inlet and after the exit of a dipping roller are provided with pulse detectors for the detection of the belt lengths and the speed.
  • the signals for the dipping roller movement can therefore be matched exactly to the roller adjustment and thus to the rolled section.
  • Corrections may be necessary, for example, if during very rapid movements of the roll adjustment, the influence of the roll diameter is so large that the additional in the inlet displaced or released material shares affect the Tauchrollenzi or if thickness deviations of the strip influence the rolling process.
EP17155391.0A 2016-02-23 2017-02-09 Dispositif et procédé de laminage de matériau en bande à épaisseur variable Active EP3210681B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016103088 2016-02-23

Publications (2)

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EP3210681A1 true EP3210681A1 (fr) 2017-08-30
EP3210681B1 EP3210681B1 (fr) 2020-01-15

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US (1) US10413949B2 (fr)
EP (1) EP3210681B1 (fr)
ES (1) ES2769264T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020114976A1 (fr) * 2018-12-06 2020-06-11 Sms Group Gmbh Procédé servant à faire fonctionner une cage de laminoir de laminage à gradins
CN112605124A (zh) * 2020-11-27 2021-04-06 广州普德机电设备有限公司 一种连续变截面薄钢板的轧制设备及成型方法
WO2021175636A1 (fr) * 2020-03-06 2021-09-10 Sms Group Gmbh Cage de laminage

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HUE063023T2 (hu) * 2016-12-30 2023-12-28 Outokumpu Oy Eljárás és berendezés fémszalagok rugalmas hengerlésére
CN107716550B (zh) * 2017-09-09 2019-03-29 首钢集团有限公司 一种低合金纵向变厚度钢板的生产方法
JP7135991B2 (ja) * 2019-04-25 2022-09-13 トヨタ自動車株式会社 校正判断装置、及び校正判断方法
BR112022021572A2 (pt) 2020-05-14 2022-12-06 Nippon Steel Corp Método para produzir ferro reduzido

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1034204A (ja) * 1996-07-29 1998-02-10 Kawasaki Steel Corp 可逆圧延機における張力制御装置
EP1454681A2 (fr) * 2003-03-07 2004-09-08 Sundwig GmbH Dispositif et procédé pour le laminage de bandes métalliques
EP1908534A1 (fr) * 2006-10-07 2008-04-09 ACHENBACH BUSCHHÜTTEN GmbH Laminoir et procédé de laminage flexible à froid ou à chaud à voie unique ou inverse d'une bande de métal
EP1121990B2 (fr) 2000-02-02 2012-02-29 Josef Fröhling GmbH & Co. KG Dispositif pour le laminage de bandes d'épaisseur variable périodiquement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1034204A (ja) * 1996-07-29 1998-02-10 Kawasaki Steel Corp 可逆圧延機における張力制御装置
EP1121990B2 (fr) 2000-02-02 2012-02-29 Josef Fröhling GmbH & Co. KG Dispositif pour le laminage de bandes d'épaisseur variable périodiquement
EP1454681A2 (fr) * 2003-03-07 2004-09-08 Sundwig GmbH Dispositif et procédé pour le laminage de bandes métalliques
EP1908534A1 (fr) * 2006-10-07 2008-04-09 ACHENBACH BUSCHHÜTTEN GmbH Laminoir et procédé de laminage flexible à froid ou à chaud à voie unique ou inverse d'une bande de métal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020114976A1 (fr) * 2018-12-06 2020-06-11 Sms Group Gmbh Procédé servant à faire fonctionner une cage de laminoir de laminage à gradins
WO2021175636A1 (fr) * 2020-03-06 2021-09-10 Sms Group Gmbh Cage de laminage
CN112605124A (zh) * 2020-11-27 2021-04-06 广州普德机电设备有限公司 一种连续变截面薄钢板的轧制设备及成型方法
CN112605124B (zh) * 2020-11-27 2022-07-05 苏州吉润汽车零部件有限公司 一种连续变截面薄钢板的轧制设备及成型方法

Also Published As

Publication number Publication date
US20170239700A1 (en) 2017-08-24
ES2769264T3 (es) 2020-06-25
US10413949B2 (en) 2019-09-17
EP3210681B1 (fr) 2020-01-15

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