EP3000542A1 - Biegepressvorrichtung, biegepressverfahren, vorrichtung zur herstellung eines stahlrohrs und verfahren zur herstellung eines stahlrohrs - Google Patents

Biegepressvorrichtung, biegepressverfahren, vorrichtung zur herstellung eines stahlrohrs und verfahren zur herstellung eines stahlrohrs Download PDF

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Publication number
EP3000542A1
EP3000542A1 EP13885094.6A EP13885094A EP3000542A1 EP 3000542 A1 EP3000542 A1 EP 3000542A1 EP 13885094 A EP13885094 A EP 13885094A EP 3000542 A1 EP3000542 A1 EP 3000542A1
Authority
EP
European Patent Office
Prior art keywords
open seam
punch
pipe
amount
gap
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
EP13885094.6A
Other languages
English (en)
French (fr)
Other versions
EP3000542A4 (de
EP3000542B1 (de
Inventor
Toshihiro Miwa
Masayuki Horie
Kouzi HORIGIWA
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.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
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 JFE Steel Corp filed Critical JFE Steel Corp
Publication of EP3000542A1 publication Critical patent/EP3000542A1/de
Publication of EP3000542A4 publication Critical patent/EP3000542A4/de
Application granted granted Critical
Publication of EP3000542B1 publication Critical patent/EP3000542B1/de
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/004—Bending sheet metal along straight lines, e.g. to form simple curves with program control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/006—Bending sheet metal along straight lines, e.g. to form simple curves combined with measuring of bends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
    • B21D5/015—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments for making tubes
    • 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
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments

Definitions

  • the present invention relates to a bending press device and a bending press method for manufacturing a steel pipe, a steel pipe manufacturing device, and a steel pipe manufacturing method.
  • Bending press is a press method for manufacturing a product having a desired shape by performing a plurality of passes (pressings) (see PTL 1, for example).
  • the bending press would be a steel pipe manufacturing method which involves pressing different portions one after another in a steel plate used as a raw material to form a steel pipe having an approximately circular cross-sectional shape. Due to such a process, the bending press can form a steel pipe having a large wall thickness and a high strength with a smaller force than a UOE method where the whole circumference of a steel pipe is formed all together.
  • Fig. 5 shows a method of forming a steel pipe by bending press.
  • a blank part indicates a steel sheet before pressing where both edges of the steel sheet are bent by edge crimping.
  • a right-side portion of the steel sheet 1 from the center in the sheet width direction is formed by performing pressing, for example, 4 to 8 passes (pressing) using a punch 2 (a).
  • a left-side portion of the steel sheet 1 from the center in the sheet width direction is formed by performing pressing at same times as that in forming the right-side portion (for example, 4 to 8 passes) (b).
  • the center portion of the steel sheet in the sheet width direction is pressed down thus forming the steel sheet into a circular shape in cross section (c).
  • the pressing-down performed as a last pass is referred to as a last press, and the steel sheet formed by the last press is referred to as an open seam pipe 3.
  • Fig. 6 is a schematic view of an open seam pipe.
  • the open seam pipe 3 is a pipe in a state where a sheet material used as a raw material is formed into a cylindrical shape, and where open seam edges 31a, 31b which face each other in an opposed manner are not welded to each other.
  • a gap a between the open seam edges which face each other in an opposed manner is a seam gap.
  • the pipe axis direction L of the open seam pipe 3 is same as the longitudinal direction of a punch.
  • a steel pipe can be manufactured by making the open seam edges of the open seam pipe formed by bending press abut each other and welding the open seam edges to each other.
  • This welding step involves firstly performing a continuous tacking step, after forming a seam gap, in which a continuous tack welder constrains the open seam pipe so as to close the seam gap thereof; next performing a temporary welding in such a state; and thereafter, performing a main welding.
  • the main welding involves firstly performing inside welding and next performing outside welding by submerged arc welding in general.
  • An amount of seam gap of an open seam pipe is adjusted by gradually increasing a punch pressing-down amount of an open seam pipe in the final press.
  • the punch pressing-down amount in the last press is increased, the amount of seam gap is decreased.
  • the punch pressing-down amount in the last press is decreased, the amount of seam gap is increased.
  • the present invention can overcome the drawbacks of the present invention by the following means.
  • bending press can be performed while appropriately controlling an amount of seam gap of an open seam pipe. Accordingly, a manufacturing efficiency of an open seam pipe is enhanced, and a manufacturing efficiency of a steel pipe is also enhanced along with the enhancement of the manufacturing efficiency of the open seam pipe and hence, the present invention is industrially extremely useful.
  • the bending press device includes an open seam edge measurement device capable of monitoring an amount of seam gap of an open seam pipe in a last press, wherein the bending press device can control a punch pressing-down amount based on information measured by the measurement device.
  • Fig. 1 is a schematic view for explaining the constitution of an open seam edge measurement device of a bending press device according to one embodiment of the present invention and a method of measuring an amount of seam gap of an open seam pipe thereby.
  • Fig. 1 is also a cross-sectional view taken in the direction orthogonal to the pipe axis direction.
  • numeral 3 indicates an open seam pipe
  • numeral 4 indicates light projectors
  • numeral 5 indicates light receivers
  • numeral 6 indicates a light beam
  • numeral 22 indicates a punch
  • numeral 21 indicates a punch support portion.
  • Numeral 21a indicates an upper portion of the punch support portion 21
  • numeral 21b indicates a lower portion of the punch support portion 21.
  • the upper portion 21a and the lower portion 21b are respectively positioned outside and inside of the open seam pipe 3 at the time of performing the last punch.
  • "a” indicates an amount of seam gap
  • "a1", “a2” respectively indicate distances between the punch support portion 21 and open seam edges of the open seam pipe, that is, amounts of gaps.
  • the open seam edge measurement device of the bending press device shown in the drawing includes: the light projectors 4 which are mounted on the upper portion 21a of the punch support portion 21 of the punch 22; and the light receivers 5 which are mounted on the lower portion 21b of the punch support portion 21 corresponding to the direction that a light beam is irradiated from the light projectors 4. Due to such a constitution, an optical path which connects the inside and the outside of the open seam pipe 3 is formed between the light projectors 4 and the light receivers 5. When amounts of seam gaps a1, a2 are decreased, a portion of or the whole optical path is blocked by the open seam edges. Accordingly, by detecting a change in intensity of a measurement light which reaches the light receivers 5 through the optical path, the amounts of seam gaps a1, a2 can be measured.
  • the light projectors 4 and the light receivers 5 are preferable to be a laser beam projector and a laser beam receiver respectively.
  • the light projectors 4 it is also possible to use an LED (light-emitting diode) having high brightness.
  • the light receiver 5 corresponding to wavelength of a light irradiated from the light projector 4 may be provided.
  • the light projectors 4 are mounted on left and right sides of the punch support portion 21 respectively such that the light projectors 4 are arranged orthogonal to the longitudinal direction of the punch support portion 21 (pipe axis direction of the open seam pipe).
  • the light receivers 5 are also mounted on left and right sides of the punch support portion 21 such that the light receivers 5 also correspond to the respective laser beam projectors 4.
  • the punch support portion 21 moves together with the punch in the direction that a steel material is pressed down or in the direction that the pressing-down is released.
  • the light projectors 4 and the light receivers 5 on the punch support portion 21 by way of members which are formed of a raw material or a mechanism which blocks vibrations generated at the time of performing a press operation.
  • the light projectors 4 and the light receivers 5 on the punch support portion 21 by way of a resin layer having a vibration absorbing function.
  • a light beam which is irradiated toward the light receivers 5 from the light projectors 4 it is sufficient for a light beam which is irradiated toward the light receivers 5 from the light projectors 4 to have a width which enables the measurement of amounts of gaps a1, a2 between the punch support portion 21 and the open seam edges 31a, 31b of the open seam pipe 3 at the time of starting the last punch pressing-down.
  • An irradiation shape of the beam is not particularly defined. That is, as a light source of the light projector 4, one light source which can irradiate a light beam having a cross section with a width which enables the measurement of the amounts of gaps a1, a2 may be used.
  • a plurality of minute light sources may be arranged within a range with a width which enables the measurement of the amounts of gaps a1, a2.
  • the light projector 4 may preferably be formed such that a plurality of laser beam sources are arranged equidistantly linearly, and the light receivers 5 also can measure a laser beam at positions which respectively correspond to the plurality of laser beam sources.
  • An amount of seam gap a is a sum of a thickness of the punch support portion 21, the gap amount a1 and the gap amount a2.
  • a kind of the laser beam is not particularly limited. However, it is desirable that the laser beam is a visible beam which an operator can observe with his naked eyes.
  • the open seam edge measurement device has a calculation function of calculating a pressing-down amount of the punch 22 using an amount of seam gap a as one of calculation factors, and a control function of outputting the obtained pressing-down amount to a press function of the bending press device.
  • the light receivers 5 may be arranged above the light projectors 4 (outside the open seam pipe). Further, in place of the arrangement where the light projector 4 and the light receiver 5 are arranged to face each other in an opposed manner, for example, an apparatus having both a function of the light projector and a function of the light receiver may be arranged at the position indicated by 4 in the drawing, and a reflector which reflects a light irradiated from the position indicated by 4 to the position indicated by 4 may be arranged at the position indicated by 5.
  • a light irradiated from the light projector reciprocates along an optical path which connects the outside and the inside of the open seam pipe, and reaches the light receiver.
  • the positions of the open seam edges 31a, 31b of the open seam pipe 3 can be obtained based on intensity of a light which reaches the light receiver, and amounts of gaps a1, a2 can be measured.
  • Fig. 2 is a schematic view showing an example of the schematic constitution of the open seam edge measurement device and a control system of a punch pressing-down amount.
  • a light beam 6 irradiated from the light projector 4 reaches the light receiver 5.
  • the open seam edges 31a or 31b of the open seam pipe 3 exist between the light projector 4 and the light receiver 5, only a portion of the light beam 6 irradiated from the light projector 4 reaches the light receiver 5.
  • a detection output of the light receiver 5 is inputted to the detection circuit 40, and amounts of gaps a1, a2 which are distances between the punch support portion 22 and the open seam edges 31a, 31b of the open seam pipe are measured.
  • the punch pressing-down amount control part 421 calculates punch pressing-down amounts which are further necessary for acquiring the amounts of gaps a1, a2 based on a result of a preparatory test performed in advance or the past records, and instructs a punch pressing-down amount to the punch 2.
  • the punch 2 presses with an instructed punch pressing-down amount.
  • the open seam edge measurement device at least at three positions (positions in the vicinity of both ends and the approximately center) in the pipe axis direction of the open seam pipe, that is, in the longitudinal direction of the punch support portion 21. Due to such a constitution, the tendency of a change in amounts of seal gaps can be understood over the whole pipe axis direction of the open seam pipe. By adjusting a punch pressing-down amount in the punch longitudinal direction, for example, based on such understanding, the amounts of seam gaps can be decreased and can be made uniform over the whole length of the open seam pipe in the pipe axis direction.
  • a press operation using the bending press device according to the present invention may preferably be performed as follows.
  • plastic deformation is applied to the open seam pipe by performing pressing-down with a predetermined pressing-down amount.
  • the pressing-down amount is set to a value which falls within a range where the open seam edges of the open seam pipe are not brought into contact with the punch support portion or within a range where the open seam edges are separated from the punch support portion when a pressing-down force is removed even when the open seam edges are brought into contact with the punch support portion, for example.
  • the pressing-down force is removed, and amounts of seam gaps of the open seam pipe in a pressing-down force removed state are measured.
  • Set punch pressing-down amounts are increased based on the amounts of seam gaps so as to press down the open seam pipe again. This operation is repeated until predetermined amounts of seam gaps are obtained.
  • Setting of punch pressing-down amounts based on amounts of seam gaps can be performed by reference to a result of a preliminary test or the past records.
  • the manufacturing device of a steel pipe may preferably include, besides the above-mentioned bending press device, a continuous tack welding device, an inner surface welding device, and an outer surface welding device.
  • the manufacturing device may preferably also include a pipe enlarging device when necessary.
  • an open seam pipe which is manufactured using the bending press device in accordance with the above-mentioned method is transferred from the bending press device.
  • continuous tack welding is applied to open seam edges of the open seam pipe using a continuous tack welding device.
  • main welding may be performed in order of inner surface welding and outer surface welding.
  • a pipe enlarging step is performed while usually setting a pipe enlarging ratio (a ratio of an amount of change in an outer diameter of the pipe after enlarging the pipe with respect to the outer diameter of the pipe before enlarging the pipe) to a value which falls within a range from 0.3% to 1.5%.
  • the pipe enlarging ratio may preferably be set to a value which falls within a range from 0.5% to 1.2%.
  • Steel pipes having outer diameters of 20 inches to 56 inches and pipe thicknesses of 12.7 mm to 50.8 mm are manufactured under two conditions, that is, the condition where the open seam edge measurement device of the bending press device according to the present invention is used, and the condition where such an open seam edge measurement device is not used.
  • the open seam edge measurement device is used in the last press performed using the bending press device.
  • Fig. 3 shows the distribution of amounts of gaps (values measured after the last press) when the last press operation is performed while controlling an amount of seam gap with naked eyes of an operator without using the open seam edge measurement device
  • Fig. 4 shows the distribution of amounts of gaps when the open seam edge measurement device is used.
  • the light projectors and the light receivers are arranged on left and right sides of the punch support portion, even when a gap amount a1 on the right side and a gap amount a2 on the left side cannot be set equal, it is possible to accurately measure an amount of seam gap.
  • the gap amount a1 on the right side and the gap amount a2 on the left side can be set equal, it may be possible to provide the light projector and the light receiver only on either one of the left side and the right side.
  • the light source By allowing the light source to have a cross section of a predetermined width or by arranging a plurality of minute light sources within a range with a predetermined width, it is possible to increase the resolution of the gap amount measurement. However, even when one minute light source is arranged on both left and right sides of the punch support portion or only on one of the left and right sides of the punch support portion, it is possible to detect that an amount of gap becomes below a certain value. Also in this case, it is possible to perform an appropriate control of the gap amount by making a step of increasing a punch pressing-down amount by the last press finer, for example.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Length Measuring Devices By Optical Means (AREA)
EP13885094.6A 2013-05-20 2013-05-20 Biegepressvorrichtung, biegepressverfahren, vorrichtung zur herstellung eines stahlrohrs und verfahren zur herstellung eines stahlrohrs Active EP3000542B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/003204 WO2014188468A1 (ja) 2013-05-20 2013-05-20 ベンディングプレス装置およびベンディングプレス方法ならびに鋼管の製造装置および鋼管の製造方法

Publications (3)

Publication Number Publication Date
EP3000542A1 true EP3000542A1 (de) 2016-03-30
EP3000542A4 EP3000542A4 (de) 2016-05-18
EP3000542B1 EP3000542B1 (de) 2021-02-24

Family

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Family Applications (1)

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EP13885094.6A Active EP3000542B1 (de) 2013-05-20 2013-05-20 Biegepressvorrichtung, biegepressverfahren, vorrichtung zur herstellung eines stahlrohrs und verfahren zur herstellung eines stahlrohrs

Country Status (5)

Country Link
EP (1) EP3000542B1 (de)
JP (1) JP6137307B2 (de)
CN (1) CN105228766B (de)
RU (1) RU2640486C2 (de)
WO (1) WO2014188468A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022117287A1 (de) * 2020-12-01 2022-06-09 Sms Group Gmbh Verfahren zur herstellung von schlitzrohren

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106180295A (zh) * 2016-08-30 2016-12-07 天津滨海精大制桶有限公司 一种钢桶卷圆成型模具
CN110461488B (zh) 2017-03-15 2021-09-10 杰富意钢铁株式会社 冲压模具及钢管的制造方法
DE102018211311B4 (de) * 2018-07-09 2020-03-26 Sms Group Gmbh Erweiterte Regelung JCO-Formpresse
JP6791397B2 (ja) 2018-09-14 2020-11-25 Ｊｆｅスチール株式会社 鋼管の製造方法及びプレス金型

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DE4215807C2 (de) * 1992-05-15 1998-03-19 Mannesmann Ag Rohrbiegepresse
JP3564278B2 (ja) * 1997-10-29 2004-09-08 三菱重工業株式会社 プレス成形金型
JP2001311617A (ja) * 2000-04-28 2001-11-09 Sekisui Chem Co Ltd 寸法測定装置及び寸法測定方法
JP2003136142A (ja) * 2001-10-31 2003-05-14 Terumo Corp 金属製の管状体およびその製造方法
RU2290273C2 (ru) * 2004-08-09 2006-12-27 Евгений Юрьевич Зубкевич Устройство для гибки листов из металла
WO2011118783A1 (ja) * 2010-03-26 2011-09-29 住友金属工業株式会社 Ｕｏｅ鋼管の製造方法および製造装置
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DE102011009660B4 (de) * 2011-01-27 2013-05-29 Sms Meer Gmbh Vorrichtung und Verfahren zum Umformen von Flachprodukten in Schlitzrohre oder Rohrvorprodukte
EP2529849B1 (de) * 2011-05-31 2021-03-10 SMS group GmbH Verfahren und Vorrichtung zum Herstellen von Schlitzrohren aus Blechtafeln
JP2013036947A (ja) * 2011-08-11 2013-02-21 Miraikikai Inc 光学式測定装置、プレス機、部品組合せ方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022117287A1 (de) * 2020-12-01 2022-06-09 Sms Group Gmbh Verfahren zur herstellung von schlitzrohren

Also Published As

Publication number Publication date
RU2015150037A (ru) 2017-05-23
EP3000542A4 (de) 2016-05-18
JP6137307B2 (ja) 2017-05-31
RU2640486C2 (ru) 2018-01-09
WO2014188468A1 (ja) 2014-11-27
JPWO2014188468A1 (ja) 2017-02-23
CN105228766B (zh) 2017-11-28
EP3000542B1 (de) 2021-02-24
CN105228766A (zh) 2016-01-06

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