US3465563A - Tube rolling mill for producing thin walled tubes - Google Patents

Tube rolling mill for producing thin walled tubes Download PDF

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Publication number
US3465563A
US3465563A US566803A US3465563DA US3465563A US 3465563 A US3465563 A US 3465563A US 566803 A US566803 A US 566803A US 3465563D A US3465563D A US 3465563DA US 3465563 A US3465563 A US 3465563A
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United States
Prior art keywords
tube
rolling mill
rolling
rolls
thickness
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.)
Expired - Lifetime
Application number
US566803A
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English (en)
Inventor
Jacques Joseph Verdickt
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.)
Vallourec SA
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Vallourec SA
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Filing date
Publication date
Application filed by Vallourec SA filed Critical Vallourec SA
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Publication of US3465563A publication Critical patent/US3465563A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/06—Rolling hollow basic material, e.g. Assel mills
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12229—Intermediate article [e.g., blank, etc.]
    • Y10T428/12271—Intermediate article [e.g., blank, etc.] having discrete fastener, marginal fastening, taper, or end structure
    • Y10T428/12278—Same structure at both ends of plural taper
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12292—Workpiece with longitudinal passageway or stopweld material [e.g., for tubular stock, etc.]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12389—All metal or with adjacent metals having variation in thickness
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]

Definitions

  • the starting material is generally a billet which is pierced at its centre to form a blank, into which a mandrel is introduced, and which is engaged between the rolls of the rolling mill, which are usually three in number and which give rise to a forced reduction of the thickness of the tubular blank.
  • the rolls are bodies of revolution which are driven rotationally by a suitable device and which, viewed in the direction of rolling, have in succession a conical portion efiecting the engagement of the blank, and then a portion having a fairly abrupt increase in diameter which effects the actual rolling, and finally a substantially cylindrical portion which effects the smoothing of the outer surface of the tube.
  • the method according to the invention ensures that the rolling mill automatically presents a diiierent adjustment depending on whether it is working on the body of the hollow blank which it is rolling and the thickness of Which it is considerably reducing, or whether it is working on the end of the blank, in which case it gives rise only to a smaller reduction of the thickness of the blank, while imparting to the latter only a reduced speed of advance.
  • the present invention has an object a new method of rolling thin tubes, said method being essentially charac- "Ice terised by the fact that the tubular blank is rolled in a rolling mill in order to give it the required thickness over the greater part of its length, whereupon the reduction of thickness of the tube obtained by rolling is reduced near the end of the blank.
  • a short portion for which the ratio of the diameter to the thickness of the tube is lower than about 11, is left at the end of the blank.
  • a reduction of the spacing of the rolls is also effected during the rolling of the end of the tube.
  • the present invention has as object the new industrial product constituted by a rolling mill for thin tubes, which is essentially characterised by the fact that each roll is mounted by two bearings comprising swivel-joints or similar devices, on the one hand on a plate which is fixed in relation to the frame of the rolling mill and on the other hand on a movable plate the angular position of which in relation to the fixed plate can be varied with the aid of any means, in order to bring to a smaller value the reduction of thickness during the rolling of the end of the tube.
  • each swivel-joint bearing supporting a roll is mounted by its plate in such a manner as to be able to move radially in relation to the latter, each roll being held in the working position by means of counter-pressure acting on a piston solid to the bearing, in such a manner that the roll cylinders can move automtically apart from one another when they are subjected to abnormal stresses.
  • the present invention likewise has as object a particular form of execution of the method indicated hereinabove, with is characterised by the fact that the reduction of thickness of the tube at the end of the latter is limited by pivoting the two plates of the rolling mill which has just been described in relation to one another.
  • the present invention has as object thin tubes rolled by the above-described method, said tubes being particularly characterised by the fact that they have a zone of greater thickness at one of their ends.
  • FIGURE 1 is a diagrammatical view in perspective showing how in accordance with the invention the distances separating the rolls of the rolling mill can be varied
  • FIGURE 2 illustrates diagrammatically in section a rolled tube according to the invention
  • FIGURES 3 and 4 illustrate diagrammatically the positions of the rolls of the rolling mill which correspond to the sections IIIIII and IV-IV in FIGURE 2,
  • FIGURE 5 is a front view, partly cut away, of a form of construction of a rolling mill according to the invention.
  • FIGURE 6 is a view in section on the line VI-VI in FIGURE 5.
  • FIGURE 1 a roll 1 is diagrammatically illustrated which turns on two swivel-joint bearings 2 and 3, which are situaed respectively on a fixed plate 4 and a movable plate 5.
  • the movable plate 5 is mounted to be pivotable about axis 6 which corresponds to the rolling axis of the hollow blank.
  • the movable plate 5 is provided with two movable stops 7 and 8 which limit its pivoting movement by bearing against the fixed stops 9 and 10, which may be adjustable.
  • the hydraulic or pneumatic device 11 has been shown diagrammatically, which enables the plate to be rotated in relation to the plate 4.
  • any pivoting of the plate 5 in relation to the plate 4 has the effect of varying the warping of the quadrilateral constituted by the axis 6, the line 2-3, and the radii of the plates 4 and 5 which pass respectively through the bearings 2 and 3 and through the axis 6.
  • any increase in the warping of the quadrilateral previously defined has two effects, namely of firstly reducing the distances between the roll 1 and the axis 6 and secondly increasing the inclination of the axis of the roll 1 in relation to the axis 6 and consequently of increasing the rolling pitch, that is to say the speed at which the blank is driven by the rolls.
  • FIGURE 2 a tube rolled in the manner just described is illustrated, the greater part of the tube having a diameter D which corresponds to a relatively slight Wall thickness in relation to the diameter of the tube.
  • FIGURE 5 It can be seen in FIGURE 5 how the bearing blocks 14, 14', and 14" can slide radially in relation to the fixed plate 4. The same is true of the bearing blocks situated on the movable plate 5.
  • each bearing block constitutes a cylinder inside which a piston 16 is movable, so that by delivering a fluid under pressure to the chamber 17 thus formed it is possible to hold the roll in their working position (the bottom of the piston 16 striking against a corresponding shoulder on the cylinder 15) while permitting the rolls to yield in the event of their being subjected to excessive stressing, which would correspond in the chamber 17 to a pressure higher than the pressure to which the fluid in question is adjusted.
  • This device can be operated for example by utilising an adjusted valve which allows the fluid to escape to the outside when the pressure exceeds a given value in the chamber 17.
  • the position of the rolls is adjusted by effecting the axial displacement of the piston 16 of each of the bearings with the aid of a wheel 18 driven rotatably by a worm 19 and keyed on the threaded body of the piston 16 which engages in a fixed nut 20.
  • FIGURE 6 is can be seen how the blank contains in its centre a mandrel 24 against Which the rolling is effected.
  • FIGURE 5 shows how the pivoting of the movable plate 5 is effected with the aid of the cylinder 25 which is articulated at 26 on the body of the rolling mill and in which the piston 27 is movable, the rod of said piston being articulated at 28 at a point on the movable plate 5.
  • the pivoting is effected by delivering a fluid under pressure on one or the other side of the piston 27.
  • the movable stop 7 bears against a fixed stop 9 which is adjustable through the fact that it is mounted by a threaded body 9 in a nut 9 solid to the frame of the rolling mill.
  • a lock-nut 29 enable the fixed stop 9 to be locked in the desired position.
  • the other movable stop 8 bears against a fixed stop 10 which in turn is supported against the rod 10 of the piston 10" which moves in the cylinder 30.
  • a device of this type enables the stop 10 to be initially placed in the position which corresponds to the position in which the piston 10" is pushed upwards, and then progressively to vary the position of the stop 10, for example by delivering through a calibrated aperture the fluid contained in the bottom portion of the cylinder 30, while a fluid under pressure is introduced into the top portion of said same cylinder 30 so as to move the piston 10" progressively downwards.
  • This feature makes it possible in particular to roll tubes of relatively slight thickness in relation to their diameter, the rolling thickness being abruptly brought to a normal value on the rear portion of the bank.
  • the pivoting of the movable plate may for example be effected automatically in this case with the aid of a photoelectric cell which detects the passage of the rear end of the blank.
  • this feature of the invention enables the tube to be given desired additional thicknesses at certain points or even to produce tubes having a thickness which is continuously variable over a considerable length.
  • bearing blocks 14, 14, and 14" are each likewise made solid to two pistons 31 which move under the action of a compressed fluid.
  • This device in particular makes it possible to bring the rolls abruptly backwards as soon as the pressure ceases to prevail in the chamber 17.
  • Method of rolling a thin metallic tube from a pierced billet by means of a rolling mill equipped with a plurality of rolls which cooperate with a central mandrel for carrying the pierced billet, and with means for varying the angular position of said rolls with respect to the axis of said mandrel and for varying the thickness of the tube being produced said method comprising the steps of rolling the pierced billet to a Wall thickness less than 1/11 of the outer diameter of said billet for the greater part of its length and then changing the setting of said rolls to reduce the angle between the axes of said rolls and that of said mandrel and produce a greater wall thickness as the trailing edge of said billet passes through said mill.
  • Tube rolling mill comprising a central mandrel positioned to be encircled by a tube being advanced axially therealong, a pair of housings axially spaced along said mandrel and a plurality of rolls positioned around said mandrel between said housings, each roll being pivotally and rotatably mounted at one end in one of said housings and at the other end in the other of said housings, at least one of said housings being mounted to turn about said mandrel and thereby alter the angular position of the axes of said rolls relative to that of said mandrel.
  • Tube rolling mill as claimed in claim 3 comprising means for automatically turning said last mentioned housing when the trailing end of a tube being rolled approaches said rolls.
  • Tube rolling mill as claimed in claim 3 comprising three rolls symmetrically distributed about said mandrel.
  • Tube rolling mill as claimed in claim 3 in which said roll ends are mounted in bearings which are supported in said housing for radial movement relative to the axis of said mandrel.
  • Tube rolling mill as claimed in claim 3 in which said roll ends are mounted in bearings supported in said housings by fluid pressure actuated means which are movable radially of said mandrel.
  • Tube rolling mill as claimed in claim 3 in which the means for turning the movable housing comprises a photo electric cell positioned to be controlled by the passage of said pierced billet beyond a predetermined point as it travels through the machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US566803A 1965-07-23 1966-07-21 Tube rolling mill for producing thin walled tubes Expired - Lifetime US3465563A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR25740A FR1475645A (fr) 1965-07-23 1965-07-23 Nouveau laminoir à tubes et procédé utilisé pour la mise en oeuvre de ce laminoir
FR106854 1967-05-18

Publications (1)

Publication Number Publication Date
US3465563A true US3465563A (en) 1969-09-09

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ID=26164969

Family Applications (2)

Application Number Title Priority Date Filing Date
US566803A Expired - Lifetime US3465563A (en) 1965-07-23 1966-07-21 Tube rolling mill for producing thin walled tubes
US729790A Expired - Lifetime US3561246A (en) 1965-07-23 1968-05-16 Method of manufacturing thin-walled tubes

Family Applications After (1)

Application Number Title Priority Date Filing Date
US729790A Expired - Lifetime US3561246A (en) 1965-07-23 1968-05-16 Method of manufacturing thin-walled tubes

Country Status (6)

Country Link
US (2) US3465563A (fr)
JP (1) JPS4947146B1 (fr)
DE (2) DE1527750B2 (fr)
ES (1) ES353988A1 (fr)
FR (2) FR1475645A (fr)
GB (2) GB1150582A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4480455A (en) * 1979-04-24 1984-11-06 M and M Technics AG Method and device for rolling tube to a smaller diameter
US4649728A (en) * 1985-04-23 1987-03-17 The Babcock & Wilcox Company Integral joint forming of work-hardenable high alloy tubing
US4763490A (en) * 1986-08-22 1988-08-16 Bruner Mates A Openable ring with safety locking means
US5136858A (en) * 1991-05-03 1992-08-11 Bruner Mates A Openable ring with interleaving member
CN103316917A (zh) * 2013-06-18 2013-09-25 太原科技大学 一种生产管材或棒材的三辊斜连轧机
CN115090739A (zh) * 2022-06-10 2022-09-23 西安交通大学 一种内向旋压制备薄壁无缝管的装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864951A (en) * 1973-12-19 1975-02-11 Gennady Ivanovich Gulyaev Device for producing semi-product tubes of constant inner diameter with thinned ends
DE3309797A1 (de) * 1983-03-18 1984-09-20 Kocks Technik Gmbh & Co, 4010 Hilden Verfahren und anlage zum herstellen nahtloser rohre
FR2561950B1 (fr) * 1984-03-28 1987-11-13 Vallourec Procede de reglage d'un laminoir a cylindres obliques et laminoir pour la mise en oeuvre de ce procede
DE3573540D1 (en) * 1985-02-18 1989-11-16 Mannesmann Ag Cross-rolling mill
US5002835A (en) * 1990-02-15 1991-03-26 Vernay Laboratories, Inc. Armature insert
DE4428530C5 (de) * 1994-08-12 2005-11-10 Kocks Technik Gmbh & Co. Kg Verfahren und Walzgerüst zum Schrägwalzen von Rohren
US8356506B2 (en) * 2011-02-25 2013-01-22 Szuba Consulting, Inc. Method of forming industrial housings

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1713678A (en) * 1926-05-04 1929-05-21 Jones & Laughlin Steel Corp Stock guiding and feeding mechanism
US1773748A (en) * 1929-03-13 1930-08-26 Tom H Nelson Method and apparatus for manufacture of seamless metallic tubes
US2336397A (en) * 1941-08-16 1943-12-07 Reed Roller Bit Co Method of forming tubes
US2774263A (en) * 1945-02-05 1956-12-18 Skf Svenska Kullagerfab Ab Rolling mill
US2868047A (en) * 1955-02-14 1959-01-13 Zublin Julius Rolling mill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1713678A (en) * 1926-05-04 1929-05-21 Jones & Laughlin Steel Corp Stock guiding and feeding mechanism
US1773748A (en) * 1929-03-13 1930-08-26 Tom H Nelson Method and apparatus for manufacture of seamless metallic tubes
US2336397A (en) * 1941-08-16 1943-12-07 Reed Roller Bit Co Method of forming tubes
US2774263A (en) * 1945-02-05 1956-12-18 Skf Svenska Kullagerfab Ab Rolling mill
US2868047A (en) * 1955-02-14 1959-01-13 Zublin Julius Rolling mill

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4480455A (en) * 1979-04-24 1984-11-06 M and M Technics AG Method and device for rolling tube to a smaller diameter
US4649728A (en) * 1985-04-23 1987-03-17 The Babcock & Wilcox Company Integral joint forming of work-hardenable high alloy tubing
US4763490A (en) * 1986-08-22 1988-08-16 Bruner Mates A Openable ring with safety locking means
US5136858A (en) * 1991-05-03 1992-08-11 Bruner Mates A Openable ring with interleaving member
CN103316917A (zh) * 2013-06-18 2013-09-25 太原科技大学 一种生产管材或棒材的三辊斜连轧机
CN103316917B (zh) * 2013-06-18 2015-06-17 太原科技大学 一种生产管材或棒材的三辊斜连轧机
CN115090739A (zh) * 2022-06-10 2022-09-23 西安交通大学 一种内向旋压制备薄壁无缝管的装置

Also Published As

Publication number Publication date
DE1752349B2 (de) 1975-11-27
FR1551865A (fr) 1969-01-03
DE1527750B2 (de) 1973-09-27
DE1752349A1 (de) 1971-05-19
ES353988A1 (es) 1970-02-01
FR1475645A (fr) 1967-04-07
US3561246A (en) 1971-02-09
GB1150582A (en) 1969-04-30
GB1202105A (en) 1970-08-12
DE1527750A1 (de) 1970-05-27
JPS4947146B1 (fr) 1974-12-13

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