US3851376A - Method for producing helical seam welded steel pipe - Google Patents

Method for producing helical seam welded steel pipe Download PDF

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Publication number
US3851376A
US3851376A US00355663A US35566373A US3851376A US 3851376 A US3851376 A US 3851376A US 00355663 A US00355663 A US 00355663A US 35566373 A US35566373 A US 35566373A US 3851376 A US3851376 A US 3851376A
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United States
Prior art keywords
strip material
bending
strip
helical
deformation resistance
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Expired - Lifetime
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US00355663A
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English (en)
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H Wade
J Witts
H Gross
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Individual
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Individual
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Priority to US494279A priority Critical patent/US3882706A/en
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    • 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
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture 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
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/126—Supply, or operations combined with supply, of strip material
    • 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
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture 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
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/128—Control or regulating devices

Definitions

  • ABSTRACT In the format1on of helical seam welded steel pipe p 355,663 from strip material, variations in the strip material are recorded and compared with nominal values and, [30] Foreign Application Priority Data based on the differences between the actnal and nomi- M 4 972 0 man 2221776 nal values, the hellcal bendlng of the strip material 1s ay y controlled to maintain the spring back force of the 52 us.
  • the present invention is directed to the formation of helical seam welded steel pipes and, more particularly, it involves checking the deformation resistance of the strip material used in forming the pipe and adjusting the helical bending of the pipe in accordance with the variations in deformation resistance.
  • Helical seam welded steel pipe is produced, as is known, from hot wide strip material, available in coil form or in flat form. Initially, if it is necessary to do so after uncoiling the strip material, it is straightened, and then the edges are cut in the proper form for the welding process. In place of relatively thin wide strip material, it is also possible to use long heavy plates which have not been coiled,.for forming the pipe.
  • the preheated wide strip material or heavy plate material which for simplicitys sake will be called plate strip, is fed by means of a driving unit over guide systems and an edge bending machine to a pipe shaping machine which continuously deforms the plate strip into a cylindrical helical seam pipe body.
  • the edge bending machine through which the plate strip is conducted takes into account the roofing-over, frequently called the "bamboo effect" in the industry, in the range of the welded seams, which effect usually appears during the manufacture of helical seam pipes.
  • Such edge bending machines are known.
  • the helical seam pipe body is supported either by rollers acting on its outer circumference, a socalled roller cage, or by rollers acting on its inner circumference, a so-called roller star.
  • the pipe shaping machine consists, for. example, of a three-roll bending machine, which consists of a threepoint bending system or of athree roll bending device and an additional bending roll, which willbe more fully described below.
  • the deformation of the plate strip in the pipe shaping machine is effected primarily in the plastic state, and, unavoidably, also in the elastic state.
  • a helical seam pipe body split in the longitudinal direction has a resilience which is characterized as spring back" in the industry. Further, a distinction is made between positive spring back and negative spring back. Due to variations in the plate strip thickness caused by rolling and also by variations in other material properties, adequate pipe diameter tolerances, but different spring back forces are obtained with constant geometric adjustment of the bending rolls of the pipe shaping machine and of the roller cage.
  • the present invention is directed to the problem of forming helical seam welded pipe by taking into account the fluctuations in the properties of the platestrip used for the pipe body so that the undesired effects of such fluctuations can be avoided.
  • the deformation resistance of the plate strip material is measured before it enters the strip bending machine and the measured value is compared with a nominal value for providing a control on the operation of the strip bending machine so that an adjustment can be provided whereby the curvature of the strip material is retained within permissible limits with regard to spring back, despite fluctuations of the properties of the strip material.
  • the control of the strip bending machine requires a knowledge of the extent to which variations in the deformation resistance of the strip material affect the pipe to be produced. Such information can be obtained, however, by making certain tests before commencing production of the pipe. In such tests, samples in the form of a ring are cut from welded test pipes, and the rings are cut up lengthwise and the positive or negative spring back is measured.
  • the present invention utilizes a strip bending machine in the form of a three-roll bending machine with an additional roll connected to it so that the roll moves transversely of the direction of the movement of the strip as it passes into the machine and the roll controls the entrance angle of the strip in the vertical plane as it enters the machine.
  • the operation of the roll is determined by checking the deformation resistance of the strip upstream from the position at which it enters the bending machine.
  • the pressures developed in the above-mentioned edge bending device are used, as mentioned above, as the actual values, because all quantitative fluctuations in the plate strip material properties, which influence the deformation resistance, result in a variation of the pressures which are developed in the edge bending device.
  • FIG. 1 is a schematic showing, in elevation, of a plant for the production of helical seam welded pipes
  • FIG. 2 is a cross sectional view taken along the line Il-II in FIG. 1;
  • FIG. 3 is an enlarged detail of a portion of FIG. 2.
  • plate strip material 1 to be used in forming helical seam welded pipe is straightened in a straightening machine 2 and then passes through an edge trimmer 3 which forms its edges in the proper configuration for the welding operation. Downstream from the edge trimmer, the strip material passes through a main driver stand 4 which effects the feed of the plate strip material through the plant for producing the helical seam welded pipe, and the edges of the strip material are bent, based on the so-called bamboo effeet, to compensate for this undesired effect which appears in the finished helical seam pipe.
  • the plate strip material 1 passes through a bending roll stand 5 and is directed into a pipe bending or shaping machine consisting of the bending rolls 6, 7 and 8. Within this shaping machine the plate strip material is bent to a radius which ensures that its outer surface bears against the rollers of a roller cage 9.
  • the bearing of the curved plate strip on the rollers is achieved only to a minor extent by elastic deformation of the plate strip developed in the shaping machine and almost exclusively by permanent deformation which exceeds the elastic limit.
  • the bending rolls 6 located below the. strip material and the bending rolls 7 positioned above the strip material are set or fixed so they do not change position during operation, however, the bending roll 8 is displaceable transversely of the direction in which the strip enters the bending machine.
  • the bending stand 5 consists of the bending rollers 51, 52, 53 and 54 represented schematically in FIG. 2. Each pair of the bending rollers 51, 52 and 53, 54 is provided in its support with an inductive pressure cell 12 which transforms pressure increases and decreases developed between the bending rollers which are proportional to the variations in the properties of the plate strip material, into electrical impulses. The electrical impulses are transmitted over an amplifier 13 to a difference-former 14. The results plotted in the testing series, representing nominal values, are stored in the setting means 15. The setting means is inter-connected with the difference-former 14.
  • any instantaneous deviation in the properties of the plate strip material I is compared in the difference-former 14 with the nominal values from the setting means 15 and, as a result, any deviation tarding element 16 stores the received electrical impulse until the section of the plate strip material which generated the impulse reaches the bending roll 8 at which moment the stored signal is released.
  • the electrical impulse is amplified within amplifier l7 and is fed to an electromotor drive 18 which adjusts the bending roll in the vertical direction over a lever gear represented schematically in FIG. 1.
  • the vertical adjustment of the bending roll that is in the direction transverse to the movement of the strip material into the bending machine, has a prebending effect on the plate strip material before it passes through the radially fixed bending rolls 6 and 7.
  • the spring back which is a function of the residual stresses in the pipe cross section, can be kept within permissible limits.
  • Method of producinghelical seam welded pipe from strip material comprising the steps of bending the strip material into a helical form by plastic deformation and welding the oppositely disposed juxtaposed edges of the strip material togethenwherein the improvement comprises, prior to bending the strip into helical form, continuously measuring the deformation resistance of the strip, and adjusting the bending operation in accordance with the measured deformation resistance so that the spring back of the strip material remains within permissible limits regardless of the variations in the strip material properties along its length.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US00355663A 1972-05-04 1973-04-30 Method for producing helical seam welded steel pipe Expired - Lifetime US3851376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US494279A US3882706A (en) 1972-05-04 1974-08-02 Method and apparatus for producing helical seam welded steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2221776A DE2221776C3 (de) 1972-05-04 1972-05-04 Steuereinrichtung zum Verstellen der Bandbiegevorrichtung eines Schraubennah trohrwerkes

Publications (1)

Publication Number Publication Date
US3851376A true US3851376A (en) 1974-12-03

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ID=5844003

Family Applications (1)

Application Number Title Priority Date Filing Date
US00355663A Expired - Lifetime US3851376A (en) 1972-05-04 1973-04-30 Method for producing helical seam welded steel pipe

Country Status (12)

Country Link
US (1) US3851376A (xx)
JP (1) JPS5412422B2 (xx)
AT (1) AT322333B (xx)
BE (1) BE797327A (xx)
CA (1) CA1020378A (xx)
DD (1) DD103159A5 (xx)
DE (1) DE2221776C3 (xx)
ES (1) ES412446A1 (xx)
FR (1) FR2187441B1 (xx)
GB (1) GB1381683A (xx)
PH (2) PH10956A (xx)
SU (1) SU496705A3 (xx)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983004196A1 (en) * 1982-05-27 1983-12-08 Rib Loc Hong Kong Limited Helically-formed pipe winding machine
US4483166A (en) * 1980-12-24 1984-11-20 Khismatulin Enver R Device for helically coiling pressure vessel shells
US4640453A (en) * 1984-10-13 1987-02-03 Mitsubishi Jukogyo Kabushiki Kaisha Apparatus for fabricating multi-layer spiral tubes
US20090165518A1 (en) * 2005-12-23 2009-07-02 John Peter Booth Apparatus for and Method of Manufacturing Helically Wound Structures
US20090272164A1 (en) * 2008-01-18 2009-11-05 William James Kephart Tube making machine with diameter control and method
US8627694B2 (en) 2007-05-30 2014-01-14 Soudronic Ag Method and device for bending sheet metal sections
WO2015127923A1 (de) * 2014-02-25 2015-09-03 Bender-Ferndorf Rohr Gmbh HERSTELLUNG EINES SPIRALNAHTGESCHWEIßTEN ROHRES
US10919106B2 (en) * 2017-06-09 2021-02-16 General Electric Company Ultrasonic welding of annular components

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504417B1 (fr) * 1981-04-22 1986-05-02 Nippon Steel Corp Procede et appareil pour la fabrication d'un tube soude en spirale
DE3116060C2 (de) * 1981-04-22 1986-07-17 Nippon Steel Corp., Tokio/Tokyo Verfahren und Vorrichtung zum Herstellen von Schraubennahtrohren
DE3137858C1 (de) * 1981-09-18 1983-07-07 Mannesmann AG, 4000 Düsseldorf Verfahren und Vorrichtung zur Regelung der Bandkantenanbiegung bei der Herstellung von Schraubennahtrohren
EP1142984A4 (en) 1998-12-28 2004-04-14 Kao Corp METHOD FOR PRODUCING GRANULES AS A SURFACTANT CARRIER
DE102009049297B3 (de) * 2009-10-13 2011-04-14 Ostseestaal Gmbh Verfahren und Vorrichtung zur komplexen Umformung eines Bleches mit Hilfe von Rotationskörpern
JP5751534B2 (ja) * 2012-12-14 2015-07-22 株式会社デンソー 回転電機の固定子鉄心の製造方法
CN103691778B (zh) * 2013-12-18 2016-01-20 北方工业大学 一种可旋转的辊弯成形装置
CN112792173B (zh) * 2020-12-22 2022-10-04 江苏博林机械制造有限公司 一种铝合金高强度板材曲面成形工艺

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1884658A (en) * 1930-07-19 1932-10-25 California Corrugated Culvert Spiral pipe machine
US3775835A (en) * 1971-09-07 1973-12-04 F Cauffiel Tapered pole construction and manufacture of same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1884658A (en) * 1930-07-19 1932-10-25 California Corrugated Culvert Spiral pipe machine
US3775835A (en) * 1971-09-07 1973-12-04 F Cauffiel Tapered pole construction and manufacture of same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4483166A (en) * 1980-12-24 1984-11-20 Khismatulin Enver R Device for helically coiling pressure vessel shells
WO1983004196A1 (en) * 1982-05-27 1983-12-08 Rib Loc Hong Kong Limited Helically-formed pipe winding machine
US4640453A (en) * 1984-10-13 1987-02-03 Mitsubishi Jukogyo Kabushiki Kaisha Apparatus for fabricating multi-layer spiral tubes
US20090165518A1 (en) * 2005-12-23 2009-07-02 John Peter Booth Apparatus for and Method of Manufacturing Helically Wound Structures
US8955362B2 (en) 2005-12-23 2015-02-17 Iti Scotland Limited Apparatus for and method of manufacturing helically wound structures
US8627694B2 (en) 2007-05-30 2014-01-14 Soudronic Ag Method and device for bending sheet metal sections
US20090272164A1 (en) * 2008-01-18 2009-11-05 William James Kephart Tube making machine with diameter control and method
WO2015127923A1 (de) * 2014-02-25 2015-09-03 Bender-Ferndorf Rohr Gmbh HERSTELLUNG EINES SPIRALNAHTGESCHWEIßTEN ROHRES
US10919106B2 (en) * 2017-06-09 2021-02-16 General Electric Company Ultrasonic welding of annular components

Also Published As

Publication number Publication date
DE2221776C3 (de) 1980-01-24
GB1381683A (en) 1975-01-22
ES412446A1 (es) 1976-01-01
FR2187441B1 (xx) 1976-06-25
SU496705A3 (ru) 1975-12-25
AT322333B (de) 1975-05-12
JPS5412422B2 (xx) 1979-05-23
DD103159A5 (xx) 1974-01-12
BE797327A (fr) 1973-07-16
FR2187441A1 (xx) 1974-01-18
CA1020378A (en) 1977-11-08
PH12470A (en) 1979-03-12
DE2221776A1 (de) 1973-11-15
DE2221776B2 (de) 1979-05-17
PH10956A (en) 1977-10-13
JPS4924872A (xx) 1974-03-05

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