RU2008102944A - ROLLING MACHINE FOR PRODUCING SEAMLESS PIPES AND METHOD OF OPERATING A ROLLING MILL - Google Patents

ROLLING MACHINE FOR PRODUCING SEAMLESS PIPES AND METHOD OF OPERATING A ROLLING MILL Download PDF

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Publication number
RU2008102944A
RU2008102944A RU2008102944/02A RU2008102944A RU2008102944A RU 2008102944 A RU2008102944 A RU 2008102944A RU 2008102944/02 A RU2008102944/02 A RU 2008102944/02A RU 2008102944 A RU2008102944 A RU 2008102944A RU 2008102944 A RU2008102944 A RU 2008102944A
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RU
Russia
Prior art keywords
rolling mill
mandrel bar
rolling
mill according
longitudinal axis
Prior art date
Application number
RU2008102944/02A
Other languages
Russian (ru)
Other versions
RU2379141C2 (en
Inventor
Петер ТИВЕН (DE)
Петер ТИВЕН
Original Assignee
Смс Меер Гмбх (De)
Смс Меер Гмбх
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Application filed by Смс Меер Гмбх (De), Смс Меер Гмбх filed Critical Смс Меер Гмбх (De)
Publication of RU2008102944A publication Critical patent/RU2008102944A/en
Application granted granted Critical
Publication of RU2379141C2 publication Critical patent/RU2379141C2/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B17/00Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/02Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B17/00Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/02Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
    • B21B17/04Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a continuous process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B17/00Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/02Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
    • B21B17/06Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a discontinuous process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B25/00Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B25/00Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B21B25/02Guides, supports, or abutments for mandrels, e.g. carriages or steadiers; Adjusting devices for mandrels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/78Control of tube rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B38/00Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)

Abstract

The rolling mill has a rolling stand provided with two rolls, which cooperatively roll two tube blanks. A mandrel rod (5) is arranged inside the tube blanks during rolling process. The rolls are in an operating position. The mandrel rod defines a wall thickness of a tube to be rolled. The mandrel rod has a shape e.g. oval shape, which deviates from a circular shape in a cross-section perpendicular to its longitudinal axis. A rotational unit is integrated in the mandrel rod and is arranged in movable manner.

Claims (15)

1. Прокатный стан для изготовления бесшовных труб, в особенности стальных, содержащий, как минимум, одну прокатную клеть с, по меньшей мере, двумя прокатными валками (1, 2), которые совместно прокатывают поверхность (3) трубной заготовки (4); при этом в процессе прокатки внутрь трубной заготовки (4) помещен стержень оправки (5), причем прокатные валки (1, 2) при их положении в рабочей позиции и стержень оправки (5) формируют толщину стенок прокатываемой трубы, отличающийся тем, что стержень оправки (5) в вертикальном по отношении к своей продольной оси (L) сечении имеет форму, отличную от идеальной окружности.1. Rolling mill for the manufacture of seamless pipes, especially steel, containing at least one rolling stand with at least two rolling rolls (1, 2), which together roll the surface (3) of the tube stock (4); during the rolling process, the mandrel bar (5) is placed inside the tube billet (4), and the rolls (1, 2) when they are in the working position and the mandrel bar (5) form the wall thickness of the rolled pipe, characterized in that the mandrel bar (5) in a vertical section with respect to its longitudinal axis (L), has a shape different from the ideal circle. 2. Прокатный стан по п.1, отличающийся тем, что стержень оправки (5) в вертикальном по отношении к своей продольной оси (L) сечении имеет овальную форму.2. The rolling mill according to claim 1 , characterized in that the mandrel bar (5) is vertical in relation to its longitudinal axis (L) and has an oval shape. 3. Прокатный стан по п.1, отличающийся тем, что стержень оправки (5) в вертикальном по отношении к своей продольной оси (L) сечении имеет форму, образованную, как минимум, двумя дугами (6, 7) одного радиуса (R), при этом радиусы (R) дуг имеют величину, составляющую больше половины наименьшего диаметра стержня оправки (D).3. The rolling mill according to claim 1 , characterized in that the mandrel bar (5) in a vertical section with respect to its longitudinal axis (L) has a shape formed by at least two arcs (6, 7) of the same radius (R) while the radii (R) of the arcs have a value of more than half the smallest diameter of the mandrel bar (D). 4. Прокатный стан по п.3, отличающийся тем, что стержень оправки (5), в вертикальном по отношении к своей продольной оси (L) сечении, имеет форму, образованную двумя круговыми дугами (6, 7) одного радиуса (R).4. A rolling mill according to claim 3 , characterized in that the mandrel bar (5), in a vertical section with respect to its longitudinal axis (L), has a shape formed by two circular arcs (6, 7) of the same radius (R). 5. Прокатный стан по п.3, отличающийся тем, что стержень оправки (5), в вертикальном по отношении к своей продольной оси (L) сечении, имеет форму, состоящую из четырех или более сегментов дуг (6, 7); при этом число сегментов дуг (6, 7) является четным.5. A rolling mill according to claim 3 , characterized in that the mandrel bar (5), in a vertical section with respect to its longitudinal axis (L), has a shape consisting of four or more arc segments (6, 7); the number of arc segments (6, 7) is even. 6. Прокатный стан по п.5, отличающийся тем, что по направлению движения прокатываемых изделий предусматривается последовательное применение не менее двух пар валков (1, 2) в одной или нескольких прокатных клетях; при этом пары валков (1, 2) повернуты относительно продольной оси (L) стержня оправки (5).6. The rolling mill according to claim 5 , characterized in that in the direction of movement of the rolled products provides for the consistent use of at least two pairs of rolls (1, 2) in one or more rolling stands; however, the pairs of rolls (1, 2) are rotated relative to the longitudinal axis (L) of the mandrel bar (5). 7. Прокатный стан по п.3, отличающийся тем, что промежуточный сегмент между двумя дугами (6, 7), образующими профиль стержня оправки (5), имеет скругление (8).7. The rolling mill according to claim 3, characterized in that the intermediate segment between the two arcs (6, 7) forming the profile of the mandrel bar (5) has a rounding (8). 8. Прокатный стан по одному из пп.1-7, отличающийся тем, что высшие радиальные точки (9, 10) поперечного профиля стержня оправки (5) расположены на его окружности симметрично.8. A rolling mill according to one of claims 1 to 7 , characterized in that the highest radial points (9, 10) of the transverse profile of the mandrel bar (5) are located symmetrically on its circumference. 9. Прокатный стан по одному из пп.1-7, отличающийся тем, что форма поперечного сечения стержня оправки (5) симметрична, по меньшей мере, по отношению к одной линии симметрии (11).9. A rolling mill according to one of claims 1 to 7 , characterized in that the cross-sectional shape of the mandrel bar (5) is symmetric with at least one symmetry line (11). 10. Прокатный стан по одному из пп.1-7, отличающийся тем, что прокатные валки (1, 2) в радиальном сечении имеют прокатывающую поверхность в форме сегмента дуги.10. A rolling mill according to one of claims 1 to 7, characterized in that the rolling rolls (1, 2) in radial section have a rolling surface in the form of an arc segment. 11. Прокатный стан по одному из пп.1-7, отличающийся тем, что оснащен поворотными устройствами (12) для поворота стержня оправки (5) в определенную позицию вокруг продольной оси (L) и удержания в ней.11. The rolling mill according to one of claims 1 to 7, characterized in that it is equipped with rotary devices (12) for rotating the mandrel bar (5) in a certain position around the longitudinal axis (L) and holding it. 12. Прокатный стан по одному из пп.1-7, отличающийся тем, что стержень оправки (5) имеет функциональные поверхности для регулировки поворота.12. A rolling mill according to one of claims 1 to 7, characterized in that the mandrel bar (5) has functional surfaces for adjusting the rotation. 13. Прокатный стан по п.11, отличающийся тем, что поворотные устройства (12) включены в выполненный подвижным опорный узел стержня оправки.13. A rolling mill according to claim 11 , characterized in that the rotary devices (12) are included in the movable support assembly of the mandrel bar. 14. Прокатный стан по одному из пп.1-7, отличающийся тем, что прокатные клети могут быть оснащены двумя, тремя или четырьмя прокатными валками (1, 2).14. A rolling mill according to one of claims 1 to 7 , characterized in that the rolling stands can be equipped with two, three or four rolling rolls (1, 2). 15. Способ эксплуатации прокатного стана для изготовления бесшовных труб, в особенности стальных, по одному из пп.1-14, отличающийся тем, что в направлении движения прокатываемых труб осуществляют замер фактической толщины стенок труб (d) после их обработки хотя бы в одной из прокатных клетей и сравнение этих данных с заданными параметрами; при этом измеренные фактические параметры толщины стенок сближают с заданными посредством регулировочного устройства, задающего нужный угол поворота вокруг своей продольной оси (L) стержня оправки (5), имеющего отличающийся от идеальной окружности поперечный профиль. 15. The method of operation of the rolling mill for the manufacture of seamless pipes, in particular steel, according to one of claims 1 to 14, characterized in that in the direction of movement of the rolled pipes, the actual pipe wall thickness (d) is measured after they are processed in at least one of rolling stands and comparison of these data with the given parameters; while the measured actual parameters of the wall thickness are brought closer to those set by means of an adjustment device that sets the desired angle of rotation around its longitudinal axis (L) of the mandrel bar (5), which has a transverse profile different from the ideal circle.
RU2008102944/02A 2007-01-27 2008-01-25 Rolling mill for manufacturing of seamless pipes and operation method of rolling mill RU2379141C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007004214.2 2007-01-27
DE102007004214A DE102007004214A1 (en) 2007-01-27 2007-01-27 Rolling mill for the production of seamless tubes and method for operating a rolling mill

Publications (2)

Publication Number Publication Date
RU2008102944A true RU2008102944A (en) 2009-07-27
RU2379141C2 RU2379141C2 (en) 2010-01-20

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ID=39125272

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2008102944/02A RU2379141C2 (en) 2007-01-27 2008-01-25 Rolling mill for manufacturing of seamless pipes and operation method of rolling mill

Country Status (4)

Country Link
EP (1) EP1949979B1 (en)
AT (1) ATE516092T1 (en)
DE (1) DE102007004214A1 (en)
RU (1) RU2379141C2 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB111295A (en) * 1916-11-14 1918-05-09 John George Inshaw Improvements in Devices for Connecting the Mandrels of Tube-rollingt Mills to their Holders.
DE445482C (en) * 1925-02-18 1927-06-13 Guenther Lobkowitz Finishing rolling of pre-perforated round billets into tubes
DE634384C (en) * 1933-03-29 1936-11-06 Guenther Lobkowitz Continuous rolling mill
DE2641555A1 (en) 1976-09-15 1978-03-16 Schevtschenko METHOD OF CONTINUOUS TUBE ROLLING AND CONTINUOUS TUBE ROLLING MILL
JPS58163507A (en) 1982-03-25 1983-09-28 Nippon Kokan Kk <Nkk> Inlet table of bar restraining type mandrel rolling mill
JP2897652B2 (en) 1994-09-05 1999-05-31 住友金属工業株式会社 Mandrel mill and tube rolling method using the same

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Publication number Publication date
DE102007004214A1 (en) 2008-07-31
RU2379141C2 (en) 2010-01-20
EP1949979B1 (en) 2011-07-13
EP1949979A1 (en) 2008-07-30
ATE516092T1 (en) 2011-07-15

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MM4A The patent is invalid due to non-payment of fees

Effective date: 20200126