EP0110194B1 - Appareil pour la réduction de l'épaisseur de paroi d'un tube par laminage - Google Patents

Appareil pour la réduction de l'épaisseur de paroi d'un tube par laminage Download PDF

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Publication number
EP0110194B1
EP0110194B1 EP83111045A EP83111045A EP0110194B1 EP 0110194 B1 EP0110194 B1 EP 0110194B1 EP 83111045 A EP83111045 A EP 83111045A EP 83111045 A EP83111045 A EP 83111045A EP 0110194 B1 EP0110194 B1 EP 0110194B1
Authority
EP
European Patent Office
Prior art keywords
tube
rollers
wall
reducing
mandrel
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
Application number
EP83111045A
Other languages
German (de)
English (en)
Other versions
EP0110194A3 (en
EP0110194A2 (fr
Inventor
Wladyslaw Dobrucki
Jerzy Mischke
Andrzej Pietrzykowski
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.)
Akademia Gomiczo Hutnicza
Original Assignee
Akademia Gomiczo Hutnicza
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Akademia Gomiczo Hutnicza filed Critical Akademia Gomiczo Hutnicza
Priority to AT83111045T priority Critical patent/ATE35231T1/de
Publication of EP0110194A2 publication Critical patent/EP0110194A2/fr
Publication of EP0110194A3 publication Critical patent/EP0110194A3/de
Application granted granted Critical
Publication of EP0110194B1 publication Critical patent/EP0110194B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B21B19/12—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 parallel to the axis of the work

Definitions

  • the invention relates to a device for reducing the wall thickness of a tube with an expanding mandrel, over which the tube is moved to expand the inner diameter, and with rollers that circulate around the tube and act on the outer circumference thereof.
  • a device for reducing the wall thickness of a tube with an expanding mandrel, over which the tube is moved to expand the inner diameter, and with rollers that circulate around the tube and act on the outer circumference thereof is known from PL-B-83 997.
  • a device for cold rolling pipes in which the pipe placed on a cylindrical mandrel is moved together with the mandrel by a rolling mill.
  • the rolls of the rolling mill have axes that run parallel or at an angle to the pipe axis and are driven by a support ring.
  • the rollers taper towards the inlet side, so that there is a decreasing roll gap in the direction of movement of the tube, which causes a reduction in the outside diameter of the tube during rolling.
  • Another rolling device is known from DE-C-955 407, in which the tube, here in the warm state, is moved over an essentially cylindrical, fixed mandrel and is rolled by two pairs of diagonal rollers. Only the outside diameter of the pipe is changed.
  • a further device for reducing the wall thickness of a pipe in which the rolls are conical and the axes of the rolls are inclined with respect to the pipe axis and possibly still inclined.
  • the fixed mandrel has an extension that expands the inside diameter of the tube, while the outside diameter can remain unchanged.
  • the device known from the aforementioned PL-B-83 997 also has essentially conical rollers, which are also supported by a support ring, and a fixed, conical mandrel which changes the inside diameter of the tube. Both the rollers and the support ring each have their own drive system, so that no torsional moment is exerted on the tube due to the roller circulation.
  • the object on which the invention is based is to design the device of the type mentioned at the outset in such a way that no tangential stresses occur in the reduction zone and a tube with a dimensionally accurate and smooth surface can be obtained.
  • the bearings of the rollers are advantageously arranged in a cage in a radially displaceable manner with a support ring. The pressure forces are then completely transferred to the support ring and the bearings of the rollers are completely free of these forces.
  • the device according to the invention also has the advantage that the reduction in the tube wall thickness is independent of a change in the outside diameter of the tube, so that the outside diameter can be maintained despite the reduction in the wall thickness.
  • the tube wall thickness is thus made independent of changes in the axial position of the mandrel with respect to the rolls, which can result from elastic deformations of the elements of the rolling mill.
  • the load on the individual roller does not depend on the pipe diameter, so the pipe feed speed can increase with increasing diameter.
  • all elements of the rolling mill are in constant motion during rolling, the tube not rotating, which reduces the noise level and energy consumption and extends the life of the rolling mill.
  • the rolling mill has a mandrel 1 on which a tube 2 is placed. One end of the mandrel 1 is attached to a frame 3. On At the other end, the head 4 is arranged, the wall-reducing part 5 of which has a diameter that increases in the direction of movement of the tube 2. Around the head 4 four work rolls 6 are arranged, the axes of which are parallel to the axis of the tube 2. The surface of the bale is parallel to the axis of the tube 2 in the zone of reduction of the wall of the tube 2.
  • the rollers 6 are seated in bearings 7, the housings of which are radially displaceably arranged in a rotating cage 8 and are supported by a support ring 9 connected to a drive system 10.
  • the cage 8 is connected to a separate drive system 11, the drive systems 10 and 11 allowing such control of their drive torque that the torsional moment on the tube 2 is within predetermined limits, for example zero.
  • a pushing device 12 is arranged in front of the rollers 6 and a pull-out device 13 is arranged behind the rollers 6.
  • the method for reducing the tube wall thickness is that the tube 2 with nominal dimensions of 0 75 x 5 mm, made of unalloyed steel and attached to the mandrel 1, is pushed onto the head 4 with an increasing diameter of 65 to 69 mm by the pushing device 12 becomes. By expanding the tube 2 on the head 4, it touches the rollers 6 with a diameter of 50 mm. From this moment on, the reduction in the tube wall thickness begins by widening the inside diameter and maintaining an unchanged outside diameter of the tube 2 between the conical part 5 for reducing the wall thickness and the rollers 6, which roll the tube 2, which moves in the axial direction, by this tube orbit as satellites.
  • the tube When the wall of the tube 2 leaves the zone above the reducing part 5, the tube has the nominal dimensions of 0 75 mm x 3 mm.
  • the tube 2 is smoothed further and calibrated by the remaining part of the working part of the roller 6.
  • the pipe has a surface quality that can be compared with that of grinding processes and an accuracy of the outside diameter within limits of +0.05 mm.
  • the end of the tube 2 is pushed out of the rollers 6 by the pushing device 12 or pulled out by the pulling device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Selective Calling Equipment (AREA)
  • Heat Treatment Of Articles (AREA)
  • Metal Extraction Processes (AREA)

Claims (2)

1. Appareil pour la réduction de l'épaisseur de paroi d'un tube, avec un mandrin (1, 4, 5) dont le diamètre va en s'élargissant, par dessus lequel le tube (2) est déplacé pour en agrandir le diamètre intérieur, et avec des cylindres (6) qui tournent autour du tube (2) et agissent sur sa circonférence, caractérisé en ce que, sur la totalité de la zone de réduction, aussi bien les axes que les surfaces de travail des cylindres (6) sont disposés parallèlement à l'axe du tube (2).
2. Appareil selon la revendication 1, avec un anneau d'appui (9) qui entoure les cylindres (6), caractérisé en ce que les paliers (7) des cylindres (6) sont disposés dans une cage (8) de façon à pouvoir s'y déplacer dans le sens radial.
EP83111045A 1982-11-25 1983-11-04 Appareil pour la réduction de l'épaisseur de paroi d'un tube par laminage Expired EP0110194B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83111045T ATE35231T1 (de) 1982-11-25 1983-11-04 Vorrichtung zur reduzierung der wanddicke eines rohres durch walzen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL1982239249A PL139099B1 (en) 1982-11-25 1982-11-25 Method of reducing thickness of pipe wall and rolling mill therefor
PL239249 1982-11-25

Publications (3)

Publication Number Publication Date
EP0110194A2 EP0110194A2 (fr) 1984-06-13
EP0110194A3 EP0110194A3 (en) 1984-09-05
EP0110194B1 true EP0110194B1 (fr) 1988-06-22

Family

ID=20014823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83111045A Expired EP0110194B1 (fr) 1982-11-25 1983-11-04 Appareil pour la réduction de l'épaisseur de paroi d'un tube par laminage

Country Status (7)

Country Link
US (1) US4602493A (fr)
EP (1) EP0110194B1 (fr)
JP (1) JPS59113908A (fr)
AT (1) ATE35231T1 (fr)
DD (1) DD217442A5 (fr)
DE (1) DE3377114D1 (fr)
PL (1) PL139099B1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0785804B2 (ja) * 1986-07-25 1995-09-20 新日本製鐵株式会社 鋼管の圧延方法
US5351515A (en) * 1993-01-19 1994-10-04 Sandvik Special Metals Corporation Apparatus and method for reducing the diameter of a cylindrical workpiece
US5626050A (en) * 1994-12-08 1997-05-06 Aluminum Company Of America Method of making metal ball bats
US7328599B2 (en) * 2006-02-02 2008-02-12 Thu Van Nguyen Method and apparatus for making metal ball bats
ITMI20081012A1 (it) * 2008-06-03 2009-12-04 Danieli Off Mecc Laminatoio del tipo espansore rotante, per corpi tubolari, con sistema di stabilizzazione della punta
CN102921847B (zh) * 2012-11-20 2015-09-30 武汉理工大学 一种筒形件的精密轧制成形方法及装置
CN103084520B (zh) * 2013-02-06 2015-09-30 武汉理工大学 一种内台阶筒形件的精密轧制成形方法及装置
CN114054506A (zh) * 2020-08-06 2022-02-18 江苏兴荣高新科技股份有限公司 一种行星轧管机连续轧制铜管的方法

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US389585A (en) * 1888-09-18 Seamless tubes
US644919A (en) * 1899-08-08 1900-03-06 John Illingworth Rod straightening and finishing machine.
US954201A (en) * 1908-12-17 1910-04-05 Anthony Joseph Mcginness Rolling mill for tubes.
US1368413A (en) * 1919-03-26 1921-02-15 Ralph C Stiefel Tube-rolling mechanism
US1596751A (en) * 1924-10-24 1926-08-17 Sandusky Foundry & Machine Co Tube-rolling machine
US1874995A (en) * 1930-12-26 1932-08-30 Eaton Mfg Co Rolling machine
BE387391A (fr) * 1931-04-29
DE635015C (de) * 1932-09-10 1936-09-08 Fritz Kocks Dr Ing Verfahren zum Auswalzen von Hohlkoerpern
US2164724A (en) * 1936-07-25 1939-07-04 Severin Jose Rolling mill for enlarging hollow bodies
US2179918A (en) * 1938-07-06 1939-11-14 Richard E Brock Tube rolling mill
DE955407C (de) * 1954-12-28 1957-01-03 Mannesmann Meer Ag Vorrichtung zum Glaetten, Aufweiten und Richten von rohrfoermigem Walzgut im WarmenZustand in Schraegwalzwerken
BE568981A (fr) * 1957-07-13
US3503238A (en) * 1966-05-05 1970-03-31 Rotary Profile Anstalt Manufacture of tubes
DE2009867C3 (de) * 1970-03-03 1978-08-03 Schloemann-Siemag Ag, 4000 Duesseldorf Walzkopf mit gegen die Walzgutachse geneigt fliegend gelagerten Walzen
US3735617A (en) * 1970-10-19 1973-05-29 Siemag Siegener Masch Bau Rolling mill
DE2657839B2 (de) * 1976-12-21 1979-09-06 Schloemann-Siemag Ag, 4000 Duesseldorf Walzwerk zum kontinuierlichen Auswalzen von Rohrluppen zu nahtlosen Rohren
DE2657823C3 (de) * 1976-12-21 1984-04-26 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzwerksanlage zur Herstellung von nahtlosen Rohren
AT366298B (de) * 1976-12-21 1982-03-25 Schloemann Siemag Ag Walzwerksanlage zur herstellung von nahtlosen rohren
FI773910A (fi) * 1977-03-21 1978-09-22 Kabel Metallwerke Ghh Snedvalsverk foer reducerande av laongstraeckt gods
DE2910445A1 (de) * 1979-03-16 1980-09-18 Schloemann Siemag Ag Verwendung eines schraegwalzwerkes mit umlaufenden walzen mit planetenantrieb

Also Published As

Publication number Publication date
US4602493A (en) 1986-07-29
ATE35231T1 (de) 1988-07-15
JPS59113908A (ja) 1984-06-30
PL139099B1 (en) 1986-12-31
DD217442A5 (de) 1985-01-16
EP0110194A3 (en) 1984-09-05
EP0110194A2 (fr) 1984-06-13
PL239249A1 (en) 1984-06-18
JPH0254164B2 (fr) 1990-11-20
DE3377114D1 (en) 1988-07-28

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