EP1155754A2 - Mandrin pour le laminage oblique de corps creux métalliques dans des laminoirs à cylindres obliques - Google Patents

Mandrin pour le laminage oblique de corps creux métalliques dans des laminoirs à cylindres obliques Download PDF

Info

Publication number
EP1155754A2
EP1155754A2 EP01102440A EP01102440A EP1155754A2 EP 1155754 A2 EP1155754 A2 EP 1155754A2 EP 01102440 A EP01102440 A EP 01102440A EP 01102440 A EP01102440 A EP 01102440A EP 1155754 A2 EP1155754 A2 EP 1155754A2
Authority
EP
European Patent Office
Prior art keywords
mandrel
tip section
piercing
tip
section
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
EP01102440A
Other languages
German (de)
English (en)
Other versions
EP1155754B1 (fr
EP1155754A3 (fr
Inventor
Thomas Leisten
Frank Salomon
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.)
SMS Siemag AG
Original Assignee
SMS Demag AG
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 SMS Demag AG filed Critical SMS Demag AG
Publication of EP1155754A2 publication Critical patent/EP1155754A2/fr
Publication of EP1155754A3 publication Critical patent/EP1155754A3/fr
Application granted granted Critical
Publication of EP1155754B1 publication Critical patent/EP1155754B1/fr
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
    • B21B25/00—Mandrels 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
    • 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

Definitions

  • the invention relates to a piercing mandrel for cross-rolling metallic hollow bodies on diagonal rolling mills, with a clamping shank and with one to the tip curved course of the roll bale.
  • Hole mandrels of this type serve as internal tools for cross-rolling metallic Hollow blocks.
  • the piercing mandrels are subject to high thermal and mechanical abrasion Stress. The high stress leads to short ones Downtimes.
  • the invention has for its object the life of the mandrels at Cross-rolling of metallic hollow blocks at low temperatures on cross-rolling mills taking into account a qualitative improvement of the inner surface, as well as reducing tool costs.
  • the object is achieved in that the mandrel bale into two longitudinal sections, a tip section and a rear longitudinal section as a piercing mandrel main body, is divided and that the tip section at full Cross section of a high-melting material or a high-melting Material alloy is made.
  • the high-melting material or the high melting material alloy significantly increase the service life in the full cross-section.
  • the higher strength at the tip of the punch the inner surface of the metallic hollow body is qualitatively improved.
  • the bigger one Tool life also means a reduction in the cost of the forming tools.
  • the division in two now also allows cross-rolling of higher and higher alloys Materials that were previously only possible to a limited extent.
  • the use of a punch with a tip section made of a high-melting material or a high melting material alloy makes the cross rolling of high alloys Materials only economically because the service life of the piercing mandrel increases considerably improved.
  • the tip section is about a third and the rear piercing pin body takes up about two thirds of the length of the roll bale.
  • a particularly suitable material results from the fact that the tip section consists of a titanium-zirconium-molybdenum alloy (TZM).
  • ZTM titanium-zirconium-molybdenum alloy
  • the remaining part of the piercing mandrel can be thermal and abrasively less stressed material, so that the basic mandrel body is made of high temperature resistant tool steel
  • One embodiment provides that the tip section with the basic piercing mandrel body is screwed by means of a thread.
  • the screw connection resilience e.g. by choosing the direction of incline and the direction of rotation of the tool to be influenced.
  • the screw connection can be configured in such a way that Perforated mandrel body is provided with a blind hole with an internal thread and that the tip section has a corresponding threaded pin.
  • the higher stress on the tip section can vary according to other characteristics can also be countered by making the tip section light after wear is interchangeable.
  • the lower tool costs then allow that to be a basic punch body several tip sections are kept in stock.
  • the top sections are already selected as suitable with regard to their thread and the tolerances.
  • the stress in the material of the basic mandrel body can be caused by cooling be influenced, nevertheless it is easier that at least the tip section is uncooled.
  • the piercing mandrel 1 is clamped in the cross rolling mill via a clamping shaft 1a and works rotating.
  • the punch mandrel bale 2 is of the largest diameter shaped starting with a curve arched to the top.
  • the mandrel bale 2 is further divided into two longitudinal sections 3, namely in a front tip section 4 and a rear longitudinal section 5, namely the punch body 6.
  • the Tip section 4 has a full cross section 4a and consists of a high melting material or from a high melting material alloy. in the Embodiment takes the tip section 4 about a third and the rear Perforated mandrel body 6 about two thirds of the length of the perforated mandrel bale.
  • the tip section 4 preferably consists of a titanium-zirconium-molybdenum alloy (TZM).
  • the main body of the mandrel can be made from high heat-resistant tool steel can be formed.
  • the tip section 4 is connected to the basic mandrel body 6 by means of a thread 7 screwed.
  • a blind hole 8 with an internal thread is in the mandrel base body 6 9 and the tip section 4 has a corresponding one Threaded pin 10 on.
  • Resulting parting line 11 has the piercing mandrel 1 from the piercing mandrel main body 6 starting in the tip section 4 a common, steady Course 12 of the roll bale 2.
  • the tip section 4 can easily be replaced by loosening the thread 7 when worn be, whereby for a piercing mandrel base body 6 several tip sections 4 can be kept in stock.
  • the tip section 4 is in itself uncooled.
  • the basic body of piercing arbor 6 be cooled inside or outside in the usual way.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Metal Rolling (AREA)
  • Drilling Tools (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Extrusion Of Metal (AREA)
EP01102440A 2000-05-17 2001-02-03 Mandrin pour le laminage oblique de corps creux métalliques dans des laminoirs à cylindres obliques Expired - Lifetime EP1155754B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10024246 2000-05-17
DE10024246A DE10024246A1 (de) 2000-05-17 2000-05-17 Lochdorn zum Schrägwalzen von metallischen Hohlkörpern auf Schrägwalzwerken

Publications (3)

Publication Number Publication Date
EP1155754A2 true EP1155754A2 (fr) 2001-11-21
EP1155754A3 EP1155754A3 (fr) 2004-02-04
EP1155754B1 EP1155754B1 (fr) 2005-10-05

Family

ID=7642436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01102440A Expired - Lifetime EP1155754B1 (fr) 2000-05-17 2001-02-03 Mandrin pour le laminage oblique de corps creux métalliques dans des laminoirs à cylindres obliques

Country Status (4)

Country Link
EP (1) EP1155754B1 (fr)
AT (1) ATE305827T1 (fr)
DE (2) DE10024246A1 (fr)
ES (1) ES2249331T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100577849C (zh) * 2008-09-17 2010-01-06 西部金属材料股份有限公司 一种深冲钼带的制备方法
CN101439362B (zh) * 2007-08-09 2014-12-10 科克斯技术有限及两合公司 用于制管方法的芯棒或芯棒杆
EP2889090A4 (fr) * 2012-08-24 2016-03-30 Nippon Steel & Sumitomo Metal Corp Bouchon pour fabrication de tube chaud

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA05006286A (es) † 2002-12-12 2006-01-27 Sumitomo Metal Ind Procedimiento de fabricacion de tubos de acero sin costura.
RU2262998C1 (ru) * 2004-02-04 2005-10-27 ОАО "Челябинский трубопрокатный завод" Способ изготовления дорна (оправки) для пилигримовой прокатки труб
RU2268798C2 (ru) * 2004-02-04 2006-01-27 ОАО "Челябинский трубопрокатный завод" Дорн для пилигримовой прокатки горячекатаных труб
RU2322318C2 (ru) * 2006-01-10 2008-04-20 ОАО "Челябинский трубопрокатный завод" Способ изготовления и эксплуатации дорнов пилигримовых станов для производства горячекатаных труб большого и среднего диаметров
RU2328354C2 (ru) * 2006-01-10 2008-07-10 ОАО "Челябинский трубопрокатный завод" Способ изготовления и эксплуатации дорнов пилигримовых станов
DE102013110725B3 (de) * 2013-09-27 2015-02-12 Vallourec Deutschland Gmbh Lochdorn mit verbesserter Standzeit zur Herstellung nahtloser Rohre
DE102021128128A1 (de) 2021-10-28 2023-05-04 Vallourec Deutschland Gmbh Lochdorn mit einer Lochdornnase zur Herstellung nahtloser Rohre

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62207503A (ja) * 1986-03-10 1987-09-11 Nippon Kokan Kk <Nkk> 高合金鋼継目無管製造用プラグ
JPS63203205A (ja) * 1987-02-17 1988-08-23 Sumitomo Metal Ind Ltd 穿孔機用プラグ
JP2581154B2 (ja) * 1988-05-16 1997-02-12 住友金属工業株式会社 鋼管穿孔機用プラグ
JPH02251304A (ja) * 1989-03-24 1990-10-09 Sumitomo Metal Ind Ltd 穿孔機用プラグ
US5778714A (en) * 1995-05-19 1998-07-14 Nkk Corporation Method for manufacturing seamless pipe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101439362B (zh) * 2007-08-09 2014-12-10 科克斯技术有限及两合公司 用于制管方法的芯棒或芯棒杆
CN100577849C (zh) * 2008-09-17 2010-01-06 西部金属材料股份有限公司 一种深冲钼带的制备方法
EP2889090A4 (fr) * 2012-08-24 2016-03-30 Nippon Steel & Sumitomo Metal Corp Bouchon pour fabrication de tube chaud

Also Published As

Publication number Publication date
DE10024246A1 (de) 2001-11-22
ES2249331T3 (es) 2006-04-01
ATE305827T1 (de) 2005-10-15
EP1155754B1 (fr) 2005-10-05
EP1155754A3 (fr) 2004-02-04
DE50107592D1 (de) 2005-11-10

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