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EP2559497A2 - Procédé et dispositif de fabrication de tuyaux pélerinés à froid - Google Patents

Procédé et dispositif de fabrication de tuyaux pélerinés à froid Download PDF

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Publication number
EP2559497A2
EP2559497A2 EP12004944A EP12004944A EP2559497A2 EP 2559497 A2 EP2559497 A2 EP 2559497A2 EP 12004944 A EP12004944 A EP 12004944A EP 12004944 A EP12004944 A EP 12004944A EP 2559497 A2 EP2559497 A2 EP 2559497A2
Authority
EP
European Patent Office
Prior art keywords
tube
rolling
measuring device
adjusting
mandrel
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.)
Withdrawn
Application number
EP12004944A
Other languages
German (de)
English (en)
Inventor
Michael Dr. Baensch
Verena Dr. Thome
Wolfgang Krebs
Georg Schieren
Oliver Strehlau
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.)
SMS Group GmbH
Original Assignee
SMS Meer GmbH
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 SMS Meer GmbH filed Critical SMS Meer GmbH
Publication of EP2559497A2 publication Critical patent/EP2559497A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
    • 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
    • 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
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product

Definitions

  • the invention relates to an apparatus and a method for producing cold pilgered pipes by means of a rolling mill, comprising a mandrel mounted on at least one mandrel abutment and at least two externally applied to the tube forming tools, preferably at least one outer roller, and a measuring device for determining the outer diameter of the tube during the forming process.
  • the cold pilgering of pipes is a process for the further processing of seamless pipes from an original format into a final format.
  • the goal of the civilage is to reduce the outside diameter and wall thickness of seamless tubes.
  • the starting material the so-called tube blanket
  • the tube blanket usually passed through a pair of rollers, which has a conical calibration and performs a rotational and feed motion intermittently on the tube blank.
  • a rolling mandrel is placed in the interior of the billet.
  • tubes are thereby produced while maintaining particularly close dimensional tolerances.
  • dimensional changes may occur in the product. If the pipe diameter threatened to leave the tolerance range or had already left, the rolling mill was previously shut down and the roll gap is corrected. Quickly occurring dimensional changes may remain unrecognized during the random checks. Also, confirmation of a successful dimensional correction was only possible if at least one whole further tube had been reshaped or the rolling mill for the dimensional control had been stopped again. After all, production time was lost in every dimensional correction because the mill had to be stopped.
  • optical methods such as laser light curtains are suitable.
  • the object of the invention was therefore to provide an automatable production method and a device suitable for this purpose, which are capable of enabling the positional adjustment of at least one forming tool during cold pilgering on the basis of measured data obtained during the forming operation.
  • the at least one position adjustment device is operatively connected to at least one forming tool acting externally on the pipe, and the position adjustment device in turn is connected to the measuring device.
  • This is preferably done by interposing a control unit between the position adjustment device and the measuring device, wherein this control unit is particularly preferably connected to a data memory for setting and / or operating parameters.
  • an on-line apparatus for producing cold pilgered pipes which is capable of detecting the deformation result and possibly occurring defects preferably almost instantaneously and preferably also to take suitable correction countermeasures during the ongoing shaping process.
  • the position adjustment device is connected to the at least one forming tool acting on the outside of the pipe, preferably at least one outer roll, and can thereby effect and adjust the roll gap setting in the desired manner and preferably online with the measuring device.
  • a deviation of the pipe outside diameter of a predetermined Value or determined by a tolerance range takes place particularly advantageously by balancing the measured data with specifications and comparative data stored in a control unit and in particular in its memory.
  • a device is provided which automatically monitors compliance with the required tolerance over the entire circumferential process and preferably also ensures the initiation of suitable measures.
  • the measuring device is preferably an optical measuring system, such as a laser measuring device, by means of which a non-destructive and secure online measurement of the outer diameter of the cold-piled pipe with particularly easy-to-control means and to achieve very accurate measurement results is possible.
  • optical measuring system such as a laser measuring device
  • the outer diameter is not determined only at a fixed position of the pipe. Rather, the cold pilgering process causes a regular twisting of the tube about its longitudinal axis. Thus, only by the preferred fixed arrangement of a measuring device and thereby taking place relative movement of the tube to this measuring device, a sweep of the measurement over the entire circumference of the formed tube. Moreover, when not only one measurement is made at a particular location of the pipe, it is preferable to make a plurality of measurements, for example, while maintaining a predetermined frequency throughout the forming process. Thus, the determination of the acquired measurement data also minimizes the influence of any measurement errors by simple means.
  • the deforming tool acting from the outside on the tube is mounted on at least one adjusting device, via which the rolling gap can be set and preferably also fixed in this position.
  • the adjusting device may comprise an electrically adjustable adjusting wedge, via which the rolling gap can be adjusted in any suitable shape and thickness, preferably continuously using the well controllable and to be provided.
  • the adjusting device has a hydraulically adjustable adjusting wedge, wherein a pump for the fluid is preferably arranged on the rolling stand itself for providing the hydraulic fluid.
  • a continuous adjustment of the roll gap with simple and easy-to-control means is also provided.
  • the preferred arrangement of the pump on the rolling stand itself also promotes the compactness of the design and reduces the length of the hydraulic fluid lines to the necessary minimum.
  • the adjustment and definition of the roll gap takes place by means of one or more hydraulic cylinders. Also in this preferred embodiment of the invention, a continuous adjustment of the roll gap can be ensured with simple and easy-to-control means.
  • the adjustment of the roll gap takes place via the employment of at least one support roll for the forming tool engaging from outside the pipe.
  • the transmission of the measured data and possibly control data to the adjusting device (s) takes place via cables.
  • the transmission is telemetrically possible in order to minimize the amount of cable and the space required for this purpose.
  • telemetric transmission of the measured data and possibly also control data it is no longer necessary to encapsulate cables and protect the cables from the effects of the forming process itself.
  • the rolling mandrel is arranged adjustable in the rolling mill.
  • the rolling mandrel is preferably also connected to the measuring device and possibly the control device. This ensures that all tools involved in the forming process can be suitably adjusted to one another in their position in order to be able to achieve the best possible forming result.
  • the flexibility of the device to respond to deviations of the wall thickness and / or the outer diameter of the tube of the predetermined size is advantageously increased by this preferred embodiment of the invention.
  • a method for producing cold pilgered tubes by means of a rolling mill comprising a rolling mandrel mounted on at least one mandrel abutment and at least two forming tools acting externally on the tube, preferably outer rolls, and a measuring device for determining the wall thickness of the tube during the forming process.
  • a position adjustment device for the externally acting on the pipe forming tool the position adjustment always when the associated with her measuring device detects a deviation of the outer diameter of the formed tube of a predetermined value or a tolerance range.
  • the position adjustment device is not only connected to the measuring device but also to a control device in order to carry out the method according to the invention.
  • the inventive method allows a preferably fully automatic detection of the outer diameter of the formed tube and corrects any detected deviations in a suitable manner by readjustment of the roll gap between the outer rollers.
  • the outer diameter is determined over the entire circumference of the tube and over its entire length, for which purpose at least one measuring device, preferably exactly one stationary measuring device, is provided within the device. Due to the fact that during the forming process with each feed a partial rotation of the tube takes place about its longitudinal axis within the rolling mill, a sweeping of the entire circumference of the formed tube is made possible by the fixed measuring device. This is also done with very simple means and still gives a reliable measurement over the outer diameter of the entire tube.
  • FIG. 1 shows a schematic view of a rolling stand 4 for cold pilgering of pipes according to a first embodiment of the invention.
  • an upper outer roller 4a and a lower outer roller 4b are disposed so as to sandwich therebetween the nip S for passing a mandrel (not shown) and stretching-reducing one (not shown).
  • the upper outer roller 4a is set to move up and down via the clamping wedge 7a so as to be able to adjust the dimension of the roll gap S appropriately.
  • the adjustment of the clamping wedge 7a takes place via the rotational movement of a spindle 14 which is operatively connected to the clamping wedge 7a and runs through the entire scaffolding frame 4 and the clamping wedge 7a.
  • the rotation of the spindle 14 causes a movement of the clamping wedge 7a to the left or right and slipping of the inclined surface of the clamping wedge 7a relative to the complementary inclined surface of the clamping wedge 7b, which is connected directly to the chock for the outer rollers 4a.
  • FIG. 2 shows the roll stand 4 according to the in FIG. 1 illustrated embodiment with between the upper work roll 4a and the lower work roll 4b passing through tube 8.
  • the rolling mandrel also used in the applied cold pilger method is not shown for ease of illustration.
  • the tube 8 extends in the drawing from left to right through the nip S between the upper roller 4a and the lower roller 4b and occurs after the conversion in the measuring device 5, in which the outer diameter of the tube 8 is determined.
  • the measurement data from the measuring device 5 enter into the control device 6, which, if necessary after accessing suitable operating data, effects a control command for setting the roll gap S via the movement of the upper work roll 4a in the direction of the arrow 15.
  • FIG. 3 shows a schematic side view of a rolling stand 4 according to a second embodiment of the invention, wherein the adjusting wedge 7a for the upper roller 4a by means of electric or hydraulic motors 16, 17 can be moved, to finally effect the adjustment of the roll gap S in a desired manner.
  • FIG. 4 shows a schematic side view of a rolling stand 4 in a third embodiment of the invention, in which, unlike the first and second embodiments according to the FIGS. 1 to 3 the lateral movement of the adjusting wedge 7a via hydraulic cylinders 18, 19 takes place. Also in this case, the lateral movement of the Verklemmkeils 7a in the horizontal direction causes a vertical movement of the upper work roll 4a and thus finally an adjustment of the roll gap S in the desired manner.
  • FIG. 5 shows a variant of the embodiment of the roll stand 4 according to FIG. 4 in which a pump 20, which in turn is driven by a pump motor 21, controls the flow of oil to the hydraulic cylinders 18, 19.
  • a pump 20 which in turn is driven by a pump motor 21, controls the flow of oil to the hydraulic cylinders 18, 19.
  • both the pump 20 and the motor 21 are fixedly connected to the rolling stand 4, so as to restrict the space of the roll stand 4 with all ancillary equipment to the required minimum.
  • FIG. 6 shows a schematic side view of a rolling mill 4 according to a fourth embodiment of the invention.
  • a hydraulic cylinder 22 serves directly and without the use of clamping wedges or the like as an organ for supporting the upper work roll 4 and for adjusting the roll gap S in the desired manner.
  • the height adjustment of the piston within the hydraulic cylinder 22 is effected by supplying the hydraulic fluid under a pressure P from an external source.
  • FIG. 7 shows a schematic side view of a rolling mill 4 in a fifth embodiment of the invention.
  • the adjustment of the roll gap S via the height adjustment of the upper work roll 4a takes place here via a spindle 23, which serves as an organ for supporting the upper work roll 4a.
  • the spindle 23 in turn is driven by a motor 24 and thus not only causes the stepless adjustment of the roll gap S on the height of the work roll 4a, but otherwise as well as the fixation of the upper work roll 4a in the desired position.
  • FIG. 8 shows a schematic side view of a rolling mill 4 in a sixth embodiment of the invention, in which case the energy supply to the actuator itself is turned off. It is thus understood that this embodiment also suitably with the embodiments of the FIGS. 1 to 7 can be combined. Power is supplied to the mill 4 via an external source 25 to a terminal 26 fixedly connected to the mill stand 4. From this terminal 26, power is supplied to the upper outer drum actuator 4a (not shown).
  • FIG. 9 shows a schematic side view of a rolling mill 4 in a seventh embodiment of the invention, here as in FIG. 8 is turned off on the type of electrical power supply to the rolling stand 4 and its (not shown) actuator for the top roller 4a.
  • this seventh embodiment of the invention is also suitably with those in the FIGS. 1 to 7 combined embodiments shown.
  • the electrical power is supplied inductively in the case shown here, wherein an electrical conductor 27 and a pickup 28, which is connected to the rolling stand 4, so are in operative connection with each other, that in the pickup 28 without contact with the conductor 27, a voltage is induced, which is sufficient to supply the (not shown) actuator for the upper outer roller 4a for a suitable adjustment of the roll gap.
  • FIG. 10 is a schematic side view of a rolling stand 4 according to an eighth embodiment of the invention shown.
  • the power supply to the rolling stand 4 and in particular its (not shown) actuator for the upper outer roller 4a is turned off.
  • this eighth embodiment is suitably with the in the FIGS. 1 to 7 combined embodiments shown.
  • the energy supply to the roll stand 4 takes place hydraulically in this eighth embodiment via a dip tube 29, which is supplied from the outside with hydraulic fluid under the pressure P.
  • the dip tube 29 has on its upper side two holes through which the hydraulic fluid can enter into a slidably mounted on the dip tube 29 fluid reservoir 30.
  • This fluid reservoir is fixedly connected to the rolling stand 4 and has on its underside an opening 30a, via which the hydraulic fluid under the pressure P for (not darg Congressen) actuator for the upper outer roller 4a can be conveyed.
  • FIG. 11 shows a schematic side view of a rolling mill 4 according to a ninth embodiment of the invention.
  • the energy supply to the (not shown) actuator of the rolling mill in particular of its upper outer roller 4a, turned off.
  • this ninth embodiment if necessary, with in the FIGS. 1 to 7 illustrated embodiments of the invention can be combined.
  • the energy is supplied in the manner shown here schematically electrically and / or hydraulically, wherein for the electrical and hydraulic power supply, an energy source 31 and / or a pressure accumulator 32 are fixedly connected to the rolling stand 4.
  • FIG. 12 shows a schematic side view of a rolling mill 4 according to a tenth embodiment of the invention.
  • This tenth embodiment focuses on the transmission of the control and measurement data from the (not shown) measuring device and / or the control device (not shown) to the (not shown) actuator of the roll stand 4, in particular to the actuator of the upper outer roller 4a. It is thus obvious that this tenth embodiment suitably with the in the FIGS. 1 to 11 illustrated embodiments of the invention can be combined.
  • FIG. 13 is a schematic side view of a rolling stand according to an eleventh embodiment of the invention shown.
  • the rolling stand 4 has a pair of respective outer rollers 4a, 4b displaceably arranged, which are respectively supported by support rollers 35a, 35b within the rolling stand 4.
  • These support rollers in turn run on height and / or inclination adjustable within the roll stand 4 arranged support beams 36a, 36b, which by adjusting the height and / or inclination of the support beams 36a, 36b and the setting of the roll gap S between the upper and lower outer rollers 4a, 4b can be done.
  • FIG. 14 is a schematic side view of a rolling mill 4 according to a twelfth embodiment of the invention shown.
  • a gear or gear pair 37 moved along with the roll stand 4 slides on a stationary shaft 38. Changes in the roll gap S can thereby be transmitted from a fixed motor 39 to the adjusting wedge 7a, wherein the adjusting wedge 7a is connected to the pair of gear wheels via a spindle 40 37 is actively connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Length Measuring Devices By Optical Means (AREA)
EP12004944A 2011-08-17 2012-07-04 Procédé et dispositif de fabrication de tuyaux pélerinés à froid Withdrawn EP2559497A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011110938A DE102011110938A1 (de) 2011-08-17 2011-08-17 Verfahren und Vorrichtung zum Herstellen kalt gepilgerter Rohre

Publications (1)

Publication Number Publication Date
EP2559497A2 true EP2559497A2 (fr) 2013-02-20

Family

ID=46465006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12004944A Withdrawn EP2559497A2 (fr) 2011-08-17 2012-07-04 Procédé et dispositif de fabrication de tuyaux pélerinés à froid

Country Status (7)

Country Link
US (1) US20130042660A1 (fr)
EP (1) EP2559497A2 (fr)
JP (1) JP2013039620A (fr)
CN (1) CN102950151A (fr)
CA (1) CA2783441A1 (fr)
DE (1) DE102011110938A1 (fr)
RU (1) RU2507015C1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013109218A1 (de) * 2013-08-26 2015-02-26 Sandvik Materials Technology Deutschland Gmbh Kaltpilgerwalzanlage und Verfahren zum Umformen einer Luppe zu einem Rohr
KR101640221B1 (ko) * 2014-04-21 2016-07-29 칼텍(주) 링 압연 장치용 공작물 외경 측정 장치
KR101552514B1 (ko) 2014-04-25 2015-09-14 한전원자력연료 주식회사 냉간 필거 압연기의 필거 다이 조립체의 갭 조절장치
US11136660B2 (en) 2015-10-29 2021-10-05 Electric Power Research Institute, Inc. Methods for creating a zinc-metal oxide layer in metal components for corrosion resistance
CN111889520A (zh) * 2020-07-29 2020-11-06 浙江中星钢管机械有限公司 一种新型多重配重冷轧机

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JPS591015A (ja) * 1982-06-28 1984-01-06 Toshiba Corp 圧延制御装置
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Also Published As

Publication number Publication date
RU2507015C1 (ru) 2014-02-20
US20130042660A1 (en) 2013-02-21
CA2783441A1 (fr) 2013-02-17
DE102011110938A1 (de) 2013-02-21
JP2013039620A (ja) 2013-02-28
CN102950151A (zh) 2013-03-06

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