EP1046435B1 - Lochwalzwerk und verfahren zum wechseln des einlauffführungsrohres - Google Patents

Lochwalzwerk und verfahren zum wechseln des einlauffführungsrohres Download PDF

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Publication number
EP1046435B1
EP1046435B1 EP98947809A EP98947809A EP1046435B1 EP 1046435 B1 EP1046435 B1 EP 1046435B1 EP 98947809 A EP98947809 A EP 98947809A EP 98947809 A EP98947809 A EP 98947809A EP 1046435 B1 EP1046435 B1 EP 1046435B1
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EP
European Patent Office
Prior art keywords
cannon
holder
pass line
piercing
mill
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
EP98947809A
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English (en)
French (fr)
Other versions
EP1046435A1 (de
EP1046435A4 (de
Inventor
Hisao Sumitomo Metal Industries Ltd. GOTO
Masaomi Sumitomo Metal Industries Ltd. NAKAMURA
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Publication of EP1046435A1 publication Critical patent/EP1046435A1/de
Publication of EP1046435A4 publication Critical patent/EP1046435A4/de
Application granted granted Critical
Publication of EP1046435B1 publication Critical patent/EP1046435B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21B19/02—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
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • B21B39/165—Guides or guide rollers for rods, bars, rounds, tubes ; Aligning guides

Definitions

  • the present invention relates to a piercing mill for manufacturing seamless steel tubes and to a cannon exchange method for use with the piercing mill. More particularly, the present invention relates to a piercing mill and a cannon exchange method for use therewith in which a cannon is automatically exchanged in accordance with a changeover so as to shorten the time required for exchange work, while enabling flexible manufacture of a variety of differently-sized seamless steel tubes in small quantities.
  • This mounting structure can be surely fixed and can be easily interchanged by mounting the cannon to the frame through the swivel arm so as to be able to swing freely, and also, by strongly pushing the cannon into the groove installed in the frame through the wing type engaging part so as to be fixed.
  • FIG. 1 is a schematic representation of the material to be rolled when it is pierced by the piercing mill.
  • Piercing rollers 1, 1 are axisymmetrically arranged at a predetermined cross angle and feed angle with respect to a pass line X-X along which is rolled a round billet 3 serving as a material to be rolled.
  • the round billet 3 fed along the pass line X-X in the direction indicated by an outlined arrow is brought into gap with the piercing rollers 1, 1 and travels over the pass line while in rotation.
  • a hole is pierced through the axial center of the of the billet 3 by a plug 2, thereby forming a hollow shell.
  • the plug 2 is supported by a mandrel supporting apparatus (not shown) so as to be positioned between the piercing rollers 1, 1 along the pass line.
  • a cannon 4 serving as a cylindrical guide is disposed at the entrance of the piercing mill along the pass line X-X, as illustrated in FIG. 1. Even if deflections are caused by a bend in the round billet 3, the round billet 3 is rotated within the cannon 4, thereby ultimately protecting the outer surface of the hollow shell.
  • the cannon 4 of the conventional piercing mill is manually exchanged by use of a crane or a jib crane disposed at the entrance of the piercing mill.
  • the manual exchange of the cannon 4 requires a large number of steps, thereby inevitably resulting in a reduction in the availability of the piercing mill.
  • exchange of a cannon results in a reduction in the overall efficiency of manufacture of seamless steel tubes.
  • the object of the present invention is to provide a piercing mill and to a cannon exchange method for use therewith in which a cannon is automatically exchanged in accordance with a changeover so as to enable flexible manufacture of a variety of differently-sized seamless steel tubes in small quantities.
  • the cannon holder is transported from a cannon holder table to the entrance of the piercing mill, while being supported by a cannon manipulator, to thereby hold a cannon at a predetermined position and perpendicular to the pass line.
  • the piercing mill and the cannon exchange method for use therewith of the present invention it is possible to effectively utilize a space on the entrance side of the piercing mill by exchanging the cannon through combination of pivotal and slidable movements. This makes it possible to automate all the steps involved in exchange, from a step of removal of a current cannon to a step of clamping a new cannon to the piercing mill. Consequently, it is possible to achieve the previously-described reduction in the time required to exchange the cannon, as well as to significantly save labor in the operations themselves.
  • FIG. 2 through 6 An example of a specific structure of the piercing mill of the present invention is shown in FIG. 2 through 6, with reference to which the effects of the present invention will be described in detail.
  • elements common to the drawings are assigned the same reference numerals.
  • FIG. 5 is a side cross-sectional view of the piercing mill for explaining step (b).
  • the pivot frame 11 pivots through 90 degrees about the pivot shaft 13 by actuation of the pivot cylinder 15 mounted on the upper portion of the mill housing 18.
  • the cannon holder 5 is also pivoted so as to come to the entrance of the piercing rollers 1, 1 along the pass line X-X.
  • FIG. 6 is a side cross-sectional view of the piercing mill for explaining step (c).
  • the cannon holder 5 is moved along the pass line X-X by actuating the slide cylinder 16.
  • the slide frames 12 formed into the double-end bracket are pivoted by actuating the slide cylinder 16 that directly connects the pivot frame 11 to the slide frames 12.
  • the other ends of the slide frames 12 opposite to the ends that have supported the slide blocks 7 now push the slide blocks 7, whereby the cannon 4 travels along the pass line X-X in a slidable motion.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Claims (5)

  1. Lochwalzwerk eines Systems zur Herstellung nahtloser Stahlrohre, mit einem Paar von Lochwalzen (1), die einander gegenüberliegend bezüglich einer Durchlauflinie (X-X) angeordnet sind, entlang der sich ein zu walzendes Material (3) schraubenförmig fortbewegt, einem Stopfen (2), der auf solche Weise in der Durchlauflinie (X-X) angeordnet ist, dass er sich zwischen den Lochwalzen (1) befindet, einem Walzwerk-Gehäuse zur Aufnahme der Lochwalzen (1) und des Stopfens (2), und einem Einlaufführungsrohr (4) zum Unterbinden von Biegungen des Materials (3), welches Einlaufführungsrohr (4) am Einlaß der Lochwalzen (1) in der Richtung der Durchlauflinie (X-X) vorgesehen ist, wobei eine Verbesserung dadurch gekennzeichnet ist, dass das Lochwalzwerk Einrichtungen (15) zum Schwenken eines Einlaufführungsrohr-Halters (5) umfaßt, der das Einlaufführungsrohr (4) aufnimmt, sowie Einrichtungen (16) zum Bewegen des Einlaufführungsrohr-Halters (5) in einer gleitenden Bewegung entlang der Durchlauflinie (X-X), in solcher Weise, dass das Einlaufführungsrohr (4) automatisch ausgetauscht wird.
  2. Lochwalzwerk gemäß Anspruch 1, dadurch gekennzeichnet, dass das Walzwerk-Gehäuse einen Zylinder (15) zum Schwenken eines Halterungsrahmens (10) umfaßt, der einen Einlaufführungsrohr-Halter (5) zum Halten eines Einlaufführungsrohrs (4) in der Richtung senkrecht zur Durchlauflinie (X-X) umfaßt, welcher Halterungsrahmen (10) einen Zylinder (16) zum Verschieben des Einlaufführungsrohr-Halters (5) entlang der Durchlauflinie (X-X) umfaßt, und welches Walzwerk-Gehäuse ferner einen Zylinder (17) zur Befestigung des Einlaufführungsrohr-Halters (5) an dem Hauptrahmen des Lochwalzwerks umfaßt, und welche Zylinder (15,16,17) dazu angeordnet sind, den in einer angehobenen Position in der Richtung senkrecht zur Durchlauflinie (X-X) gehaltenen Einlaufführungsrohr-Halter (5) auf solche Weise zu schwenken, dass er mit der Durchlauflinie (X-X) ausgerichtet wird, den Einlaufführungs-Halter (5) über die Durchlauflinie (X-X) in einer Verschiebebewegung zu bewegen, und den Einlaufführungsrohr-Halter (5) in einer vorbestimmten Position durch kombinierte Wirkung der Zylinder ( 15,16,17) festzuklemmen.
  3. Lochwalzwerk gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Einlaufführungsrohr-Halter (5) von einem Einlaufführungsrohrhalter-Tisch (20) zum Einlaß des Lochwalzwerks mittels eines Einlaufführungsrohr-Manipulators (21) bewegt wird.
  4. Verfahren zum Austausch eines Einlaufführungsrohrs in einem Lochwalzwerk für nahtlose Stahlrohre, bei welchem ein zu walzendes Material (3) zur Verhinderung von Biegungen in ein Einlaufführungsrohr (4) eingesetzt wird und das Material (3) mittels eines Paars von Lochwalzen (1), die einander gegenüberliegend in Bezug auf die Durchlauflinie (X-X) angeordnet sind, schraubenförmig entlang einer Durchlauflinie (X-X) bewegt wird, auf solche Weise, dass ein Stopfen (2) in die Mitte des Materials (3) eindringt und in diese einsticht, wobei die Verbesserung dadurch gekennzeichnet ist, dass das Verfahren die Schritte des Schwenkens eines Einlaufführungsrohr-Halters (5) umfaßt, der das Einlaufführungsrohr (4) in einer Richtung senkrecht zu der Durchlauflinie (X-X) hält, sowie des Verschiebens des Einlaufführungsrohr-Halters (5) entlang der Durchlauflinie (X-X), und des Festklemmens des Einlaufführungsrohr-Halters (5) am Hauptrahmen des Lochwalzwerks.
  5. Verfahren zum Austausch eines Einlaufführungsrohrs gemäß Anspruch 4, dadurch gekennzeichnet, dass der Einlaufführungsrohr-Halter (5) von einem Einlaufführungsrohrhalter-Tisch (20) zum Einlaß des Lochwalzwerks transportiert wird, während er durch einen Einlaufführungsrohr-Manipulator (21) getragen wird, auf solche Weise, dass ein Einlaufführungsrohr (4) in einer vorbestimmten Position und senkrecht zu der Durchlauflinie (X-X) gehalten wird.
EP98947809A 1997-10-13 1998-10-09 Lochwalzwerk und verfahren zum wechseln des einlauffführungsrohres Expired - Lifetime EP1046435B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP27890497 1997-10-13
JP27890497A JP3297994B2 (ja) 1997-10-13 1997-10-13 穿孔圧延機およびキャノン取り換え方法
PCT/JP1998/004572 WO1999019090A1 (fr) 1997-10-13 1998-10-09 Laminoir perceur et procede de changement de canon

Publications (3)

Publication Number Publication Date
EP1046435A1 EP1046435A1 (de) 2000-10-25
EP1046435A4 EP1046435A4 (de) 2001-04-18
EP1046435B1 true EP1046435B1 (de) 2004-01-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98947809A Expired - Lifetime EP1046435B1 (de) 1997-10-13 1998-10-09 Lochwalzwerk und verfahren zum wechseln des einlauffführungsrohres

Country Status (4)

Country Link
EP (1) EP1046435B1 (de)
JP (1) JP3297994B2 (de)
DE (1) DE69821138T2 (de)
WO (1) WO1999019090A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102327897A (zh) * 2011-07-26 2012-01-25 太原通泽重工有限公司 一种穿孔机顶头定心装置
RU2523402C1 (ru) * 2012-12-18 2014-07-20 Открытое акционерное общество "Челябинский трубопрокатный завод" Способ прошивки слитков и заготовок массой от 3 до 10 тонн в гильзы в стане поперечно-винтовой прокатки

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6043208B2 (ja) * 1979-07-30 1985-09-27 三菱重工業株式会社 竪型製管機械用入側ガイド筒の取付構造
JPS57109505A (en) * 1980-12-27 1982-07-08 Ishikawajima Harima Heavy Ind Co Ltd Method and device for exchanging cannon guide of mannesmann skew rolling mill

Also Published As

Publication number Publication date
DE69821138D1 (de) 2004-02-19
EP1046435A1 (de) 2000-10-25
EP1046435A4 (de) 2001-04-18
JPH11114609A (ja) 1999-04-27
DE69821138T2 (de) 2004-10-21
JP3297994B2 (ja) 2002-07-02
WO1999019090A1 (fr) 1999-04-22

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