EP0748875A1 - Procédé de fabrication de tubes selon le principe U-O-E - Google Patents

Procédé de fabrication de tubes selon le principe U-O-E Download PDF

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Publication number
EP0748875A1
EP0748875A1 EP96250126A EP96250126A EP0748875A1 EP 0748875 A1 EP0748875 A1 EP 0748875A1 EP 96250126 A EP96250126 A EP 96250126A EP 96250126 A EP96250126 A EP 96250126A EP 0748875 A1 EP0748875 A1 EP 0748875A1
Authority
EP
European Patent Office
Prior art keywords
pipes
expansion
pipe
reduction
cold
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
EP96250126A
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German (de)
English (en)
Other versions
EP0748875B1 (fr
Inventor
Gerold Hohl
Gerd Vogt
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0748875A1 publication Critical patent/EP0748875A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/10—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars
    • C21D7/12—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars by expanding tubular bodies
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material

Definitions

  • the invention relates to a process for the production of pipes, in particular large pipes, according to the UOE process according to the preamble of the main claim.
  • UOE The process referred to in the technical field as UOE is the most frequently used process for producing longitudinally welded large pipes (Stradtmann, Stahlrohr-Handbuch, 10th edition, Vulkan-Verlag, Essen 1996, pages 164-167).
  • U press open dies
  • O -press closing dies
  • Pipes produced according to the UOE process show changes in the strength and deformation properties compared to the starting sheet due to the cold expansion, characterized by inhomogeneities on the pipe circumference and pronounced deformation anisotropies.
  • the object of the invention is to provide a process for the production of pipes, in particular large pipes, by the UOE process to be specified in which the strength and deformation properties are largely homogenized in the pipe circumferential direction and certain properties can be set in a targeted manner.
  • FIG. 1 shows a graphic representation of the uniform expansion in the pipe circumferential direction as a function of the degree of reduction and expansion.
  • the uniform expansion is plotted in percent on the ordinate and the degree of deformation resulting from reduction and expansion in percent on the abscissa.
  • the fine-dotted straight line 1 is the uniform expansion for the starting material sheet metal, for example for the steel X70-TM, ie thermomechanically rolled. It is above 13% here.
  • the curve 2 below shows the scatter range of the test values. With a degree of deformation of 0%, the values of the uniform expansion are already below those of the sheet due to the pipe production. If the pipe is now greatly expanded in the course of pipe production, the uniform expansion decreases sharply, as the picture clearly shows. On the other hand, if the pipe is reduced, then the uniform expansion increases and, depending on the degree of reduction, can reach the initial value of the sheet as a single value or even as an average.
  • FIG. 2 shows a graphical representation of the yield point ratio in the pipe circumferential direction as a function of the degree of reduction and expansion.
  • the yield strength ratio R t 0.5 / R m is plotted on the ordinate and the degree of deformation in percent on the abscissa.
  • the fine-dotted straight line 3 is the yield point ratio for the starting material sheet metal. For example, this ratio should be 0.8.
  • the solid line 4 shows the increase in the yield ratio as the degree of expansion increases.
  • the continuation of this curve in the left half of the graph shows the decrease in the yield ratio when the previous reduction is increasingly overlaid by an expansion. If, on the other hand, a reduction is immediately given to the pipe, the dash-dotted line 5 results. This course makes it clear that even with a small reduction, the yield ratio drops sharply compared to the starting value for sheet metal.
  • FIG. 3 shows in graphical form the R t 0.5 yield point across the circumference of the pipe as a function of the internal or external pressure.
  • the yield point values with an external pressure load are considerably lower than with an internal pressure load. This means that the pipe has a low resistance to collapse.
  • the course over the pipe circumference shows that the values are distributed unevenly. This means that influences from the pipe production are still clearly visible and determine the behavior of the component under internal or external pressure.
  • the new method according to the invention (right part b) the values are evened over the pipe circumference.
  • the yield point under external pressure load is significantly increased, so that the pipe manufactured in this way has a higher resistance to collapse.
  • FIGS. 4 to 5 stress-strain diagrams are shown in graphic form, the stress in megapascals being plotted on the ordinate and the deformation in percent on the abscissa.
  • Figure 4 shows the course of the voltage in the manufacture of conduits according to the conventional method.
  • the solid line starting in Coordinate origin zero over point A to point B shows the change in tension during manufacture.
  • There is a certain reduction in the O-press here marked by curve section 6.1.
  • After welding there is a vigorous expansion by means of a mechanical expander, here characterized by curve 6.2, which extends to point A.
  • the voltage drops to the value up to point B. If a sample is taken for the tensile test in a pipe produced in this way, the tension / elongation follows the curve section 7 shown in broken lines, the yield point being reached at point F and a further yield point being reached at point C.
  • Figure 5 shows the situation in the manufacture of onshore pipes.
  • a high reduction is first applied, corresponding to the extended curve 11, starting from the zero coordinate origin. This is followed by an expansion in accordance with curve 12 to point A. After the relief, the tension drops to the value in point B.
  • the tensile test yields an ordinate value F13 for the yield point, which is comparatively as large as that in FIG conventional processes.
  • the decisive difference lies in the ordinate value F'14 in the reversal of the deformation. This value F 'is approximately the same as the value F, perhaps even a little larger.
  • FIG. 6 shows the situation in the manufacture of offshore pipes.
  • the tube is first homogenized by widening and then adjusted to the diameter and compression limit by reduction.
  • the increase in the voltage is shown by the thick curve 15 starting at the zero coordinate origin.
  • the drop when the reduction is given is shown by curve 16 up to point A.
  • the tension drops to the value in point B.
  • the tension increases according to the dashed line 17 to the ordinate value 18 in point F. This lies somewhat below the comparable values F according to FIGS. 4 and 5.
  • the reversal, ie the compression test results in an ordinate value 19 at point F ', which is considerably larger than the value determined in the tensile test.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)
EP96250126A 1995-06-14 1996-06-11 Procédé de fabrication de tubes selon le principe U-O-E Expired - Lifetime EP0748875B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19522790A DE19522790C2 (de) 1995-06-14 1995-06-14 Verfahren zur Herstellung von Rohren nach dem UOE-Verfahren
DE19522790 1995-06-14

Publications (2)

Publication Number Publication Date
EP0748875A1 true EP0748875A1 (fr) 1996-12-18
EP0748875B1 EP0748875B1 (fr) 2005-01-26

Family

ID=7765055

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96250126A Expired - Lifetime EP0748875B1 (fr) 1995-06-14 1996-06-11 Procédé de fabrication de tubes selon le principe U-O-E

Country Status (5)

Country Link
US (1) US5794840A (fr)
EP (1) EP0748875B1 (fr)
JP (1) JPH091233A (fr)
CA (1) CA2177643C (fr)
DE (2) DE19522790C2 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19602920C2 (de) * 1996-01-22 1998-01-29 Mannesmann Ag Verfahren und Vorrichtung zum Kalibrieren und Richten von nach dem UOE-Verfahren hergestellten Rohren
EP1204772B1 (fr) 1999-05-10 2007-07-25 EUROPIPE GmbH Procede pour produire des tubes d'acier soudes presentant une resistance mecanique, une tenacite et une aptitude a la deformation elevees
DE10023488B4 (de) * 1999-05-10 2008-11-20 Europipe Gmbh Verfahren zur Herstellung von geschweißten Stahlrohren hoher Festigkeit, Zähigkeits- und Verformungseigenschaften
US7793721B2 (en) 2003-03-11 2010-09-14 Eventure Global Technology, Llc Apparatus for radially expanding and plastically deforming a tubular member
JP3846246B2 (ja) * 2001-09-21 2006-11-15 住友金属工業株式会社 鋼管の製造方法
WO2003099482A1 (fr) 2002-05-24 2003-12-04 Nippon Steel Corporation Tuyau en acier uoe presentant une excellente resistance aux impacts, et procede de fabrication du tuyau en acier uoe
EP1552271A1 (fr) * 2002-09-20 2005-07-13 Enventure Global Technology Evaluation de formabilite de conduite pour des elements tubulaires extensibles
US7886831B2 (en) 2003-01-22 2011-02-15 Enventure Global Technology, L.L.C. Apparatus for radially expanding and plastically deforming a tubular member
CA2420345A1 (fr) * 2003-03-07 2004-09-07 Georges Bouchard Abri telescopique
CN102000983B (zh) * 2009-09-02 2013-02-06 东明机械株式会社 钢板卷绕装置
JP5966441B2 (ja) * 2012-03-01 2016-08-10 Ｊｆｅスチール株式会社 耐圧潰性能および耐内圧破壊性能に優れた溶接鋼管およびその製造方法
CN111842673A (zh) * 2020-07-22 2020-10-30 中国石油天然气集团有限公司 一种提高直缝焊管管体和管端几何尺寸精度的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE589465C (de) * 1924-05-28 1933-12-07 Otto Leissner Dr Verfahren zur Herstellung von Hohlkoerpern mit Schweissnaht fuer hohe Druecke
DE1758389B2 (de) * 1967-05-26 1978-12-14 American Cast Iron Pipe Co., Birmingham, Ala. (V.St.A.) Verfahren zur Verbesserung der physikalischen Eigenschaften von durch elektrische WiderstandsschweiBung erzeugten und kaltkalibrierten Stahlrohren
DE2657269B2 (de) * 1975-12-22 1979-08-23 Grotnes Machine Works, Inc., Chicago, Ill. (V.St.A.) Verfahren zur Herstellung von Stahlrohren
JPS632517A (ja) * 1986-06-20 1988-01-07 Sumitomo Metal Ind Ltd Ｕｏｅ管の矯正方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2235243A (en) * 1939-03-27 1941-03-18 Republic Steel Corp Ferrous metal article and method of producing same
JPH05279738A (ja) * 1992-04-02 1993-10-26 Nippon Steel Corp 耐摩耗鋼管の製造法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE589465C (de) * 1924-05-28 1933-12-07 Otto Leissner Dr Verfahren zur Herstellung von Hohlkoerpern mit Schweissnaht fuer hohe Druecke
DE1758389B2 (de) * 1967-05-26 1978-12-14 American Cast Iron Pipe Co., Birmingham, Ala. (V.St.A.) Verfahren zur Verbesserung der physikalischen Eigenschaften von durch elektrische WiderstandsschweiBung erzeugten und kaltkalibrierten Stahlrohren
DE2657269B2 (de) * 1975-12-22 1979-08-23 Grotnes Machine Works, Inc., Chicago, Ill. (V.St.A.) Verfahren zur Herstellung von Stahlrohren
JPS632517A (ja) * 1986-06-20 1988-01-07 Sumitomo Metal Ind Ltd Ｕｏｅ管の矯正方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 195 (M - 705) 7 June 1988 (1988-06-07) *
STRADTMANN: "STAHLROHR-HANDBUCH", 1986, 10. AUFLAGE, VULKAN-VERLAG, ESSEN, DE, XP002012116 *

Also Published As

Publication number Publication date
EP0748875B1 (fr) 2005-01-26
JPH091233A (ja) 1997-01-07
DE59611185D1 (de) 2005-03-03
US5794840A (en) 1998-08-18
CA2177643C (fr) 2004-07-20
DE19522790A1 (de) 1996-12-19
CA2177643A1 (fr) 1996-12-15
DE19522790C2 (de) 1998-10-15

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