EP2285507B1 - Method for producing a large steel tube - Google Patents

Method for producing a large steel tube Download PDF

Info

Publication number
EP2285507B1
EP2285507B1 EP09757221A EP09757221A EP2285507B1 EP 2285507 B1 EP2285507 B1 EP 2285507B1 EP 09757221 A EP09757221 A EP 09757221A EP 09757221 A EP09757221 A EP 09757221A EP 2285507 B1 EP2285507 B1 EP 2285507B1
Authority
EP
European Patent Office
Prior art keywords
straightening
tube
producing
tubular
stress
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.)
Active
Application number
EP09757221A
Other languages
German (de)
French (fr)
Other versions
EP2285507A1 (en
Inventor
Jochem Beissel
Thilo Reichel
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.)
Eisenbau Kramer Mbh
Original Assignee
Eisenbau Kramer Mbh
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
Priority to DE102008027807A priority Critical patent/DE102008027807B4/en
Application filed by Eisenbau Kramer Mbh filed Critical Eisenbau Kramer Mbh
Priority to PCT/EP2009/003816 priority patent/WO2009146838A1/en
Publication of EP2285507A1 publication Critical patent/EP2285507A1/en
Application granted granted Critical
Publication of EP2285507B1 publication Critical patent/EP2285507B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/10Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts between rams and anvils or abutments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08Making tubes with welded or soldered seams
    • B21C37/0807Tube treating or manipulating combined with, or specially adapted for use in connection with tube making machines, e.g. drawing-off devices, cutting-off
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/30Finishing tubes, e.g. sizing, burnishing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/10Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/14Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers

Abstract

The invention relates to a method for producing a steel tube, wherein a steel sheet (4) is formed into tubular body (1.2) having a round cross section in a bending process (a), welded in a subsequent welding process (b) along the longitudinal edges facing each other for producing a continuous longitudinal seam, and then subjected to a stress-relieving treatment. The production quality is improved, with reduced production time, in that the stress-relieving treatment is performed in a process (c) for concentrically truing along the circumference in at least one segment relative to the longitudinal axis thereof, while cold forming by compression (Fig. 1). The mechanical technological properties of the material are also thereby improved.

Description

  • The invention relates to a method for producing steel pipes, in which a sheet metal or coil formed in a bending process to a round tube in cross-section, welded in a subsequent welding along the longitudinal edges facing each other for producing a longitudinal seam and then subjected to a relaxation treatment.
  • A method of this kind is in the DE 10 2006 010 040 B3 specified. In this known method, the tube is compressed by means of a straightening machine from the outer circumference by means of a plurality of circumferentially offset, axially arranged rectilinear straightening for straightening, the straightening wear the straightening tube adapted to the shape of the tube outer cross section. The straightening can be individually or in dependence on each other z. B. are moved hydraulically, the operation can be controlled or regulated can. By means of the control axes, the straightening cylinders with the straightening shells can direct the tube up to its circular contour, the calibration taking place with respect to the diameter and / or the ovality. An upsetting of the material beyond the yield point is also possible by means of this so-called impanding there for the first time.
  • The EP 0 438 205 A2 shows a method and apparatus for straightening the ends of elongated workpieces. When the workpiece is stationary, at least one selected in the end region cross-section of a rising and falling bending bending stress is subjected, with a predetermined maximum deflection one or more times revolves around the workpiece axis. A rising or falling bending stress is chosen so that the selected cross section is deformed into the plastic region. The means for generating a deflection of the workpiece axis in an orbit beyond the elastic limit of the workpiece also have at least three symmetrically arranged about a common axis, movable in the radial direction plunger, which are each connected to a path and time-dependent controllable piston-cylinder unit and the rams out of phase with each other during the straightening process by means of a control connection of the piston-cylinder units to perform a sinusoidal lifting movement. This is done no judging roundness or ovality, but a correction of deviations in the straightness of the bent ends, ie it is about a longitudinal straightening.
  • Also with one in the FR 737 123 A shown straightening machine for pipes they are directed in their longitudinal direction, in a warm state. Here are two opposing straightening elements that receive the pipe between them and can be pressed against each other by means of a lever mechanism with drive, over the entire length of the tube. The straightening elements are z. B. rounded according to the diameter of the tube, wherein the inner part of the straightening elements can be interchangeable. Before the straightening process, the tubes are heated red and evacuated. After the longitudinal straightening thus carried out, the tubes are fed by means of an ejector to a cooling device. In particular, the straightening of large steel pipes is complicated with such measures, and problems and solutions to Rundricht do not go out of this document.
  • In the DE 196 02 920 A1 is a method for producing pipes, in particular large pipes, specified, in which the tubes are calibrated and straightened after the internal and external welding by cold expansion (expanding).
  • The DE 41 24 689 A1 shows a method and apparatus for eliminating molding defects and eliminating noxious residual stresses in longitudinally welded tubing also by expanding the tube using an internal mandrel. The expansion of the tubing takes place in such a measure that existing in the circumferential direction residual stresses should be largely eliminated.
  • When straightening pipes unevenness of the tube shape, such. B. local ovalities on the tubular body, eliminated by local material transformations. In this case, no uniform stress reduction over the pipe jacket, in particular pipe circumference made. Rather, the known local ovality eliminations produce further, undefined stresses in the material. A target diameter can be in this way with the straightening, although with a relatively high Set effort, but in particular over the pipe circumference thereby no compression strength of the material is achieved.
  • During expansion, the tools generate a uniform force on the inner side of the tube, which, when straightening, evenly guides the material into a circular shape. In this process, however, unfavorable stress conditions can be generated in the tubular body, whereby the compression strength and thus collapse resistance of the pipe can decrease. In the case of coated pipes (eg CLAD pipes), the material may also be damaged so that such pipes often can not be calibrated using this process. Such adverse effects can be further increased with increasing degree of expansion.
  • The invention has for its object to provide a method for producing large steel tubes, with which the production of high-quality pipes is achieved with the most accurate rounding and with the shortest possible production time, as well as appropriately trained pipes to provide, including the mechanical technological properties of the material to be improved.
  • This object is achieved with the features of claim 1. In the method with the features of the preamble of claim 1 it is provided that the relaxation treatment is performed in a step to Rundricht along the circumference at least partially with respect to the longitudinal axis of the tube under cold deformation by upsetting.
  • With the measures in the combination mentioned not only the target diameter can be set well, but in the process of Rundrichtens is also a Relaxation treatment performed. In this way, not only the pipe tolerance, in particular the ovality, improved by uniform plastic deformation of the material in a short time, but also the residual stress behavior of the tubular body. Not only are the stresses generated mechanically by the shaping of the sheet metal material in the base material reduced, but also the thermally generated stresses caused by the longitudinal seam welding of the sheet material formed to the tube are reduced. Overall, the mechanical properties of the pipe are improved by the method, namely z. B. the compression strength and the collapse resistance. As calculations in the research and development work prove, the residual stress behavior after impanding, depending on the degree of impact, is reduced to a minimum, whereby a virtually complete reduction in stress is made possible without a complex heat treatment (low-stress annealing at, for example, approx 600 ° C) is required, and disadvantages caused by the heat treatment can be avoided. Due to the uniform upsetting over the outer surface of the tube, the residual stresses generated by the manufacturing process in the longitudinal and circumferential direction in the base material and in the weld build off. As the investigations of the inventors have shown, a reason for the improvements obviously lies in the fact that the residual stress state is reversed, ie after the impanding there is tension on the inside of the tube and compressive stress on the outside of the tube. With raw materials clad on the inside, additional advantages result from the external impanation, since the sensitive inner surface is not damaged or loaded. As a result, the corrosion properties of the inner material are not weakened. For support materials z. For example, made of alloy 625, the corrosion resistance is even improved by internal residual stresses.
  • A measure which is advantageous for the straightening and the relaxation is that during straightening a plastic deformation of the tubular body is made over its entire circumference.
  • Vorteihafte embodiments for an exact Rundrichten consist in the fact that the circular alignment is done on predetermined pipe outside diameter or predetermined pipe inside diameter.
  • In order to improve the inherent stress behavior of the tubular body, the measures further contribute to the fact that circumferential straightening and hydraulic expansion (for example with hydrotester) are combined with each other during straightening for relaxation. In this case, the impanding and hydraulic relaxation can also be carried out alternately and repeatedly.
  • Furthermore, the straightening and the relaxation processes are facilitated by the fact that the straightening and relaxing is carried out by means of at least two straightening dies, which are pressed from outside in the radial direction to the tube axis and offset in the circumferential direction, with straightening cups which are adapted in sections to the peripheral contour of the tube.
  • A tube having advantageous properties is obtained by being produced by one of the above-mentioned methods.
  • The invention will be explained below with reference to embodiments with reference to the drawings. Show it:
  • Fig. 1
    a arranged in a rotary straightening tube in a schematic cross-sectional view and
    Fig. 2
    a schematic representation of manufacturing steps of a pipe.
  • Fig. 1 shows an axial plan view of a tube 1 of a round cross-section with an inner radius r i and an outer radius r a , through whose difference a wall thickness t is fixed. The tube 1 has a longitudinally extending weld seam 2. Mechanical or thermal stress regions 3, 3 'are present in the tube wall on the one hand as a result of the mechanical molding process and on the other as a result of the heat influences during welding.
  • The straightening machine or straightening device 10 has a plurality of circumferentially evenly distributed and arranged in the same direction in the axial direction of the directional stamp with respective straightening shells 11, 12, 13, 14, which are interchangeably mounted on a respective holder 15 and on its side facing the tube 1 with a are provided on the surface contour of the tube 1 adapted surface shape, which extends in the circumferential direction along the pipe surface, so that when concerns all straightening the tube surface is largely encompassed in the circumferential direction. In the axial direction, however, extend the straightening cups 11, 12, 13, 14 only over a short section of the tube 1, wherein a plurality of such units of straightening cups 11, 12, 13, 14 can be arranged in the longitudinal direction of the tube 1 on the outer surface. Due to the interchangeability straightening cups adapted to different tube diameters can be easily used or exchanged. The holder 15 of the straightening shells 11, 12, 13, 14 are along a Guide axis 17 hydraulically adjusted in radial, oriented to the center of the tube 1 direction in the carrier 16 to cause a compression of the tubular body and a hydraulic expansion in the opposite direction under control or regulation by means of a control device 20. In this case, a directing to predetermined inner or outer diameter can take place, wherein an absolute position can be specified via the control device.
  • Fig. 2 shows essential steps in the manufacture of the tube 1, namely a molding process a, in which a metal plate 4 is formed by means of a molding device 30 by means of dies under advancement of the metal plate 4 gradually to a bent part 1.1 and finally the circumferentially bent tubular body 1.2. Subsequently, the tubular body 1.2 is closed in a welding process b at its mutually facing edges, which were previously prepared for welding, by means of a longitudinal weld in a welding device 40. By the Einformvorgänge and welding results in mechanical and thermal stress areas 3, 3 ', as mentioned above. Subsequently, optionally followed by performing further processing and / or control steps a straightening process c under Rundrichten of the tube 1, in which at the same time also takes place a relaxation treatment. The relaxation treatment can additionally be combined in a subsequent step d with a hydrostatic relaxation, for example by means of hydrotester, wherein by means of a pressure medium in the pipe interior an outwardly directed pressure p is generated on the inner tube surface.
  • In the case of large pipes, ie in particular with wall thicknesses t ≥ 9 mm and diameters d ≥ 300 mm, eg up to t = 80 mm and d = 2000 mm, the rounding succeeds with uniform calibration over the circumference with the above-mentioned leveler, as mentioned in the introduction DE 10 2006 010 040 B3 is shown, with a upsetting of the material in the circumferential direction and a circular straightening can be achieved with high tolerance requirements, with a compression beyond the yield point addition is possible. By plastically deforming the circular straightening, a relaxation of both mechanical and thermal stress areas 3, 3 'over the entire circumference can be achieved simultaneously. As a result, the residual stress behavior of the tubular body is significantly improved without additional heat treatment, at the same time negative influences, such as can occur through a heat treatment, for. B. in low-voltage annealing, be avoided. Thus, not only the stresses caused by the molding of the sheet metal material are reduced, but also the thermally generated stresses caused by the longitudinal seam welding, degraded, wherein the plastic deformation of the tubular body 1.2 over the entire pipe circumference. Here, the straightening is achieved with the relaxation treatment by cold deformation.
  • By combining the impanding and hydraulic relaxation under control or regulation via the control device 20, the relaxation process can be specifically influenced. At the same time, pipe outside or inside pipe diameters can be set to specific values. By this method, the mechanical technological properties such as strength and thermal expansion coefficient of the pipe material can be positively influenced. Furthermore, the collapse behavior of the tube and the properties under fatigue stresses are improved. Overall, this makes it possible to produce high quality, virtually stress-free tubes with high tube tolerances in a much shorter time compared to conventional manufacturing processes. As in Research and development work has been demonstrated by calculations, the residual stress behavior can be minimized after impanding, depending on the degree of impact, and also a complete reduction of stress is possible.

Claims (5)

  1. Method for producing a steel tube, in which method a plate or coil is formed into a tubular body (1.2) of round cross section in a bending operation, is welded in a subsequent welding operation (b) along the longitudinal edges facing one another to produce a continuous seam and is then subjected to a stressrelief treatment, characterized in that the stressrelief treatment is carried out during an operation for concentrically straightening (c) along the circumference in at least one section with respect to the longitudinal axis thereof while cold working by upsetting.
  2. Method for producing a steel tube according to Claim 1, characterized in that plastic deformation of the tubular body is carried out over the entire circumference thereof during the concentric straightening.
  3. Method according to Claim 1 or 2, characterized in that a predetermined tube outside diameter (ra) or predetermined tube inside diameter (ri) is set during the concentric straightening.
  4. Method according to one of the preceding claims, characterized in that, for the stress relief, upsetting in the circumferential direction and hydraulic stress relief are combined with one another during the concentric straightening.
  5. Method according to one of the preceding claims, characterized in that the concentric straightening and stress relief are carried out by means of two, in particular at least three straightening punches which press from the outside in the radial direction relative to the tube axis, are offset in the circumferential direction and have straightening shells (11, 12, 13, 14) adapted in sections to the circumferential contour of the tube (1).
EP09757221A 2008-06-06 2009-05-28 Method for producing a large steel tube Active EP2285507B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE102008027807A DE102008027807B4 (en) 2008-06-06 2008-06-06 Method for producing a large steel pipe
PCT/EP2009/003816 WO2009146838A1 (en) 2008-06-06 2009-05-28 Method for producing a large steel tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL09757221T PL2285507T3 (en) 2008-06-06 2009-05-28 Method for producing a large steel tube

Publications (2)

Publication Number Publication Date
EP2285507A1 EP2285507A1 (en) 2011-02-23
EP2285507B1 true EP2285507B1 (en) 2011-09-07

Family

ID=41258801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09757221A Active EP2285507B1 (en) 2008-06-06 2009-05-28 Method for producing a large steel tube

Country Status (16)

Country Link
US (1) US9156074B2 (en)
EP (1) EP2285507B1 (en)
JP (1) JP5361996B2 (en)
KR (1) KR20110022613A (en)
CN (1) CN102056687B (en)
AT (1) AT523271T (en)
AU (1) AU2009254199B2 (en)
BR (1) BRPI0915529B1 (en)
CA (1) CA2726132C (en)
DE (1) DE102008027807B4 (en)
DK (1) DK2285507T3 (en)
PL (1) PL2285507T3 (en)
PT (1) PT2285507E (en)
RU (1) RU2456108C1 (en)
UA (1) UA103024C2 (en)
WO (1) WO2009146838A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102442552B (en) 2010-09-30 2014-12-31 通用电气公司 Feeding tank for pneumatically conveying solid particles and feeding system
KR101220472B1 (en) * 2010-10-28 2013-01-10 한전케이피에스 주식회사 Mechanical Stress Improvement Apparatus
CN103182629A (en) * 2011-12-31 2013-07-03 上海和达汽车配件有限公司 Forming method for high strength steel pipe fittings with unequal wall thickness and irregular pipe fittings
RU2535164C2 (en) * 2013-03-22 2014-12-10 Открытое акционерное общество "Челябинский трубопрокатный завод" Method to produce longitudinal welded pipes of large diameter
DE102013103811B3 (en) 2013-04-16 2014-03-20 EISENBAU KRäMER GMBH Method for producing a multi-layered large pipe
RU2633123C2 (en) * 2013-05-20 2017-10-11 ДжФЕ СТИЛ КОРПОРЕЙШН Control unit of bias offsetting and operation mode of bias offsetting in continuous tack welding device
CN105246608B (en) * 2013-05-29 2018-01-02 杰富意钢铁株式会社 The manufacture method of welded still pipe
WO2015003276A1 (en) 2013-07-08 2015-01-15 Andritz Soutec Ag Method for producing annular parts, and use of said method
US9533343B2 (en) * 2014-06-12 2017-01-03 Ford Global Technologies, Llc Aluminum porthole extruded tubing with locating feature
CN104492878A (en) * 2014-12-18 2015-04-08 中冶京诚工程技术有限公司 Upper moulding bed and chord cold pressing forming device
KR101698338B1 (en) * 2015-06-30 2017-01-23 한국수력원자력 주식회사 Device for alleviating residual stress of pipe
CN106363045A (en) * 2015-07-01 2017-02-01 重庆荆江汽车半轴有限公司 Half-shaft thermal straightening machine for vehicle
KR20190020697A (en) * 2016-06-22 2019-03-04 테오도르 그뢰베너 게엠베하 운트 코. 카게 Apparatus for measuring and calibrating hollow components and method of using such apparatus

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR737123A (en) * 1931-09-11 1932-12-07 Maschb Ag Vormals Ehrhardt & S Straightening machine the tubes
FR2093378A5 (en) * 1970-06-12 1972-01-28 Tubest Sa
JPS5570413A (en) * 1978-11-21 1980-05-27 Sumitomo Metal Ind Ltd Manufacture of large diameter welded pipe
SU1274890A1 (en) * 1984-07-31 1986-12-07 Ордена Ленина И Ордена Трудового Красного Знамени Институт Электросварки Им.Е.О.Патона Method of producing straight-seam pipes
SU1433535A1 (en) * 1987-01-14 1988-10-30 Предприятие П/Я В-8772 Method of straightening continuous articles
JPH01237114A (en) * 1988-03-17 1989-09-21 Sekisui Chem Co Ltd Manufacture of metal composite tube
DE4001901C2 (en) * 1990-01-19 1993-02-04 Mannesmann Ag, 4000 Duesseldorf, De
DE4124689A1 (en) * 1991-07-22 1993-01-28 Mannesmann Ag Removing form errors and relieving adverse internal stresses in longitudinal seam welded pipes - by continuous expansion with internal expander plug and plug mandrel
CN1026867C (en) * 1992-04-21 1994-12-07 陕西省宝鸡石油钢管厂 Multifuncition straight seam welding tube forming technology and forming machine
DE19602920C2 (en) * 1996-01-22 1998-01-29 Mannesmann Ag Method and device for calibrating and straightening pipes manufactured using the UOE method
RU2116150C1 (en) * 1996-06-06 1998-07-27 Иркутский государственный технический университет Method for straightening elongated cylindrical products and machine for performing the same
DE19827798A1 (en) * 1998-06-23 1999-12-30 Thyssenkrupp Stahl Ag Production of longitudinally welded pipes out of plane sheet metal blanks
DE102004041024B4 (en) * 2004-08-25 2006-07-06 Thyssenkrupp Steel Ag Method and device for producing a longitudinally welded hollow profile
JP4180080B2 (en) * 2005-09-30 2008-11-12 ナカジマ鋼管株式会社 Equipment for manufacturing round steel pipes
DE102006010040B3 (en) * 2006-03-04 2007-10-11 Eisenbau Krämer mbH straightener
US7818986B1 (en) * 2007-05-23 2010-10-26 The United States Of America As Represented By The Secretary Of The Army Multiple autofrettage

Also Published As

Publication number Publication date
WO2009146838A1 (en) 2009-12-10
PL2285507T3 (en) 2012-01-31
KR20110022613A (en) 2011-03-07
WO2009146838A8 (en) 2010-02-11
RU2456108C1 (en) 2012-07-20
JP5361996B2 (en) 2013-12-04
CA2726132C (en) 2013-07-02
JP2011521790A (en) 2011-07-28
AU2009254199B2 (en) 2013-01-10
DK2285507T3 (en) 2011-12-05
EP2285507A1 (en) 2011-02-23
AT523271T (en) 2011-09-15
UA103024C2 (en) 2013-09-10
DE102008027807A1 (en) 2009-12-10
US9156074B2 (en) 2015-10-13
BRPI0915529A2 (en) 2016-01-26
US20110174046A1 (en) 2011-07-21
CN102056687A (en) 2011-05-11
CN102056687B (en) 2013-07-10
DE102008027807B4 (en) 2011-05-12
PT2285507E (en) 2011-11-25
CA2726132A1 (en) 2009-12-10
BRPI0915529B1 (en) 2019-10-08
AU2009254199A8 (en) 2012-03-01
AU2009254199A1 (en) 2009-12-10

Similar Documents

Publication Publication Date Title
KR100878647B1 (en) Method of bending processing for metal material, bending processing apparatus, bending processing equipment line, and bending-processed products obtained thereby
CA2682815C (en) Method of manufacturing a bent product and an apparatus and a continuous line for manufacturing the same
JP2017532201A (en) Flow-forming corrosion-resistant alloy tube and tube produced thereby
ES2321121T3 (en) Procedure for the manufacture of an untitled steel tube, produced in hot.
JP4825019B2 (en) Bending method of metal material, bending apparatus and bending equipment row, and bending product using them
KR101188619B1 (en) Method for manufacturing torsion beam and torsion beam
US10016802B2 (en) Method and apparatus for manufacturing a bent product
EP1799374B1 (en) Plug, method of expanding inside diameter of metal pipe or tube using such plug, method of manufacturing metal pipe or tube, and metal pipe or tube
DE10031989B4 (en) Method and device for producing press fittings made of steel, in particular stainless steel
EP2123372B1 (en) Method for bending pipes, rods, profiled sections and similar blanks, and corresponding device
CN100518984C (en) Round pipe steel component arc clod curving forming mould
US10406581B2 (en) Method for manufacturing a worked member using an induction heating coil
RU2505370C1 (en) Method and device for manufacturing of pipes with butt weld made from metal sheets
AU2010271776A1 (en) Method and apparatus for manufacturing a bent member
CN102762319B (en) Method for manufacturing wheel rim for vehicle
JP2012170977A (en) Method of manufacturing steel pipe
RU2468884C2 (en) Method of making rings
EP1829626B1 (en) Straightener
Wong et al. Cold rotary forming of thin-wall component from flat-disc blank
CN103921065A (en) Manufacturing method of vehicle seamless steel tubes
AU732681B2 (en) Linear friction welding process for making wheel rims
ES2560443T3 (en) Bending apparatus
US8141405B2 (en) Method for producing ultra thin wall metallic tube with cold working process
WO2008022715A1 (en) Device and method for producing a hollow body from a workpiece in the form of a round blank
DE10316854A1 (en) Method and device for deforming a workpiece from a material with exponential stress-strain behavior into a thin-walled, hollow shell

Legal Events

Date Code Title Description
17P Request for examination filed

Effective date: 20110107

AX Request for extension of the european patent

Extension state: AL BA RS

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502009001343

Country of ref document: DE

Effective date: 20111110

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20111109

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20110907

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110907

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110907

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

REG Reference to a national code

Ref country code: EE

Ref legal event code: FG4A

Ref document number: E006071

Country of ref document: EE

Effective date: 20111115

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20110907

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110907

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110907

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110907

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20110402935

Country of ref document: GR

Effective date: 20120206

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110907

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120107

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110907

26N No opposition filed

Effective date: 20120611

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502009001343

Country of ref document: DE

Effective date: 20120611

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110907

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110907

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130531

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120528

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090528

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

PGFP Annual fee paid to national office [announced from national office to epo]

Ref country code: EE

Payment date: 20170511

Year of fee payment: 9

Ref country code: DK

Payment date: 20170519

Year of fee payment: 9

PGFP Annual fee paid to national office [announced from national office to epo]

Ref country code: PT

Payment date: 20170524

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

PGFP Annual fee paid to national office [announced from national office to epo]

Ref country code: NO

Payment date: 20180601

Year of fee payment: 10

Ref country code: CZ

Payment date: 20180625

Year of fee payment: 10

Ref country code: FI

Payment date: 20180528

Year of fee payment: 10

PGFP Annual fee paid to national office [announced from national office to epo]

Ref country code: FR

Payment date: 20180530

Year of fee payment: 10

Ref country code: PL

Payment date: 20180525

Year of fee payment: 10

Ref country code: NL

Payment date: 20180530

Year of fee payment: 10

Ref country code: AT

Payment date: 20180601

Year of fee payment: 10

Ref country code: RO

Payment date: 20180529

Year of fee payment: 10

Ref country code: BE

Payment date: 20180530

Year of fee payment: 10

PGFP Annual fee paid to national office [announced from national office to epo]

Ref country code: SE

Payment date: 20180530

Year of fee payment: 10

PGFP Annual fee paid to national office [announced from national office to epo]

Ref country code: GB

Payment date: 20180530

Year of fee payment: 10

REG Reference to a national code

Ref country code: EE

Ref legal event code: MM4A

Ref document number: E006071

Country of ref document: EE

Effective date: 20180531

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20180531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181128

Ref country code: EE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180531

PGFP Annual fee paid to national office [announced from national office to epo]

Ref country code: DE

Payment date: 20190521

Year of fee payment: 11

Ref country code: IT

Payment date: 20190527

Year of fee payment: 11

PGFP Annual fee paid to national office [announced from national office to epo]

Ref country code: GR

Payment date: 20190521

Year of fee payment: 11

Ref country code: TR

Payment date: 20190522

Year of fee payment: 11

REG Reference to a national code

Ref country code: NO

Ref legal event code: MMEP

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20190601

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 523271

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190528

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190528

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190528

Ref country code: CZ

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190528

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190529

Ref country code: NO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190531

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190528

Ref country code: RO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190528

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190528

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190601

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190531