EP0110194A2 - 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

Info

Publication number
EP0110194A2
EP0110194A2 EP83111045A EP83111045A EP0110194A2 EP 0110194 A2 EP0110194 A2 EP 0110194A2 EP 83111045 A EP83111045 A EP 83111045A EP 83111045 A EP83111045 A EP 83111045A EP 0110194 A2 EP0110194 A2 EP 0110194A2
Authority
EP
European Patent Office
Prior art keywords
tube
head
reducing
wall thickness
wall
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
EP83111045A
Other languages
German (de)
English (en)
Other versions
EP0110194B1 (fr
EP0110194A3 (en
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 method for reducing the tube wall thickness and a rolling mill for reducing the tube wall thickness.
  • a rolling mill known from German Patent No. 635 015 has a support ring that wraps around the rollers, these rollers, driven by the frictional force on the support ring and the tube, orbiting this tube as satellites.
  • the pipe placed on a mandrel bar is pushed or pulled through the rolling mill.
  • the rolls have such a shape and arrangement with respect to the pipe axis, so that the outside diameter of the pipe is reduced during rolling.
  • a disadvantage of the rolling mill described is that the tube is loaded with the total rolling moment, which results from the lack of a rotating and separately driven head in which the roller bearings could be placed.
  • the rollers are stressed by the axial pressure force of the metal.
  • a method known from Polish Patent Specification No. 83 997 for enlarging the outside diameter of a pipe consists in enlarging the pipe diameter in two phases. In the first phase, the pipe is pulled or pushed through a fixed extension head. In the second phase, the tube walls on the extension head are rolled across by a unit consisting of three or more rollers orbiting the tube as satellites. The ratio of the angular velocity of the rotating head and the support ring is chosen so that the torsional moment of the tube is close to zero.
  • the device known from Polish patent specification No. 83 997 has a mandrel which is attached to the frame at one end while a cone extension head is seated at the other end.
  • the rollers are fixed or pendulum-like in the rotating head and supported by the support ring connected to the drive system.
  • the support ring drives the work rolls and reduces their deflection by supporting them.
  • the head is connected to a separate drive, the two drives allowing the ratio between their angular velocities to be controlled in such a way that the torsional moment of the tube fluctuates near zero.
  • the axes of the work rolls lie on the surface of the cone, the tip of which lies in the axis of the tube and is directed opposite to its direction of movement.
  • the tube is surrounded by a set of squeezing rollers, the axes of which are perpendicular to the axis of the tube.
  • a set of pull-out rollers is arranged behind the head, the axes of which are perpendicular to the axis of the tube.
  • a disadvantage of the described method and the described device is the substantial limitation of the manufacturing possibilities of tubes with small diameter and thin walls, which results from the limitation of the expansion value and the connection of the reduction in the wall thickness with the enlargement of the diameter.
  • the wall thickness of the rolled pipe depends on the position of the extension head in relation to the rolls. Due to the insufficient rigidity of the rolling mill in its axial direction, difficulties arise in achieving a high accuracy of the tube wall thickness. In addition, the axial bearings of this rolling mill are stressed by considerable metal pressure forces, which has an adverse effect on their durability.
  • the object of the invention is to provide a method and the development of a rolling mill to reduce the tube wall thickness of a tube of any size and to increase the accuracy of the dimensions and shape of the tube.
  • the object of the invention is achieved in that in coupled processes of circulating rolling and pushing or pulling-through the tube in the zone-the wall thickness reduction, a pressure is exerted on the inner surface of the tube by the mandrel head, which causes an enlargement of the inside diameter, and a pressure is exerted on the outer surface, which ensures the invariability of the outer diameter of the tube.
  • the rolling mill according to the invention has a mandrel fastened at one end to a frame, on the other end of which an extension head is arranged, around which the work rolls mounted in a rotating driven head are arranged, which are supported by a support ring connected to the drive system.
  • a push-through device is arranged on one side of the rotating head and a pull-out device is arranged on the other side.
  • the axes of the work rolls are parallel to the axis of the tube.
  • the surface of the roll barrel is also parallel to the pipe axis in the reduction zone of the pipe wall.
  • the bearings of the work rolls are inserted radially in the rotating head.
  • An advantage of the method according to the invention is that the degree of reduction of the wall thickness is made independent of the change in the outside diameter of the tube in the rolling zone.
  • the use of rollers with parallel axes and with the bale surface parallel to the tube axis without incision or board in the tube wall reduction zone eliminates the axial component of the metal pressure, reduces the stress on the bearings and enables the radial rigidity of the rolling mill to be increased by estimating the Rolling through a strong support ring.
  • the tube wall thickness is made independent of the changes in the axial position of the head relative to the rolls, which are caused by elastic entangling of the elements of the rolling mill in the axial direction.
  • the load on the individual roller does not depend on the pipe diameter, so it is possible for the pipe feed speed to increase with the increase in its diameter.
  • all elements of the rolling mill are in constant motion during rolling, the tube not rotating, which makes it possible to reduce the noise level and the energy consumption and to extend the life of the rolling mill.
  • the rolling mill according to the invention has a mandrel 1, on which a tube 2 is placed.
  • One end of the mandrel 1 is attached to a frame 3.
  • a head 4 At its other end there is a head 4, the wall-reducing part 5 of which has a diameter that increases in the direction of movement of the tube 2 having.
  • Four work rolls 6 are arranged around the head 4, 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 arranged radially displaceably in a rotating head 8 and are supported by a support ring 9 connected to a drive system 10.
  • the head 8 is connected to a separate drive system 11, the drive systems 10 and 11 permitting such regulation of their drive moment that the twisting moment on the pipe 2 is within the predetermined limits, for example zero.
  • An ejection device 12 is arranged in front of the rollers 6 and an extraction device 13 is arranged behind the rollers 6.
  • the method according to the invention for reducing the tube wall thickness consists in that the tube 2 with nominal dimensions of ⁇ 75 x 5 mm, made of unalloyed steel and pushed onto the mandrel 1 is pressed onto the head 4 with a growing diameter of 65 to 69 mm by the ejection device 12 becomes. By expanding the tube 2 on the head 4, it touches the rollers 6 with a diameter of 50 mm.
  • the reduction in the tube thickness begins by widening the inside diameter and maintaining an unchanged outside diameter of the tube 2 between the bell-shaped part 5 to reduce the wall thickness and the rollers 6 which roll the tube 2 which moves in the axial direction by orbiting this tube as its satellites.
  • the tube has the nominal dimensions of ⁇ 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 achieved with grinding processes and an accuracy of the outside diameter within the limits of ⁇ 0.05 mm.
  • the end of the tube 2 is pressed out of the rollers 6 by the squeezing 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)
  • Heat Treatment Of Articles (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Selective Calling Equipment (AREA)
  • Metal Extraction Processes (AREA)
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 true EP0110194A2 (fr) 1984-06-13
EP0110194A3 EP0110194A3 (en) 1984-09-05
EP0110194B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102921847A (zh) * 2012-11-20 2013-02-13 武汉理工大学 一种筒形件的精密轧制成形方法及装置

Families Citing this family (7)

* 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
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
GB1188374A (en) * 1966-05-05 1970-04-15 Rotary Profile Anstalt Improvements in or relating to apparatus for Manufacturing Tubular Articles
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
DE2657823C3 (de) * 1976-12-21 1984-04-26 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzwerksanlage zur Herstellung von nahtlosen Rohren
DE2657839B2 (de) * 1976-12-21 1979-09-06 Schloemann-Siemag Ag, 4000 Duesseldorf Walzwerk zum kontinuierlichen Auswalzen von Rohrluppen zu nahtlosen Rohren
AT366298B (de) * 1976-12-21 1982-03-25 Schloemann Siemag Ag Walzwerksanlage zur herstellung von nahtlosen rohren
FI773910A7 (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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102921847A (zh) * 2012-11-20 2013-02-13 武汉理工大学 一种筒形件的精密轧制成形方法及装置
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

Also Published As

Publication number Publication date
JPH0254164B2 (fr) 1990-11-20
EP0110194B1 (fr) 1988-06-22
JPS59113908A (ja) 1984-06-30
DD217442A5 (de) 1985-01-16
DE3377114D1 (en) 1988-07-28
PL239249A1 (en) 1984-06-18
US4602493A (en) 1986-07-29
EP0110194A3 (en) 1984-09-05
ATE35231T1 (de) 1988-07-15
PL139099B1 (en) 1986-12-31

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