EP2176013B1 - Schmiededorn zum warmschmieden rohrförmiger werkstücke aus metall - Google Patents

Schmiededorn zum warmschmieden rohrförmiger werkstücke aus metall Download PDF

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Publication number
EP2176013B1
EP2176013B1 EP08773279A EP08773279A EP2176013B1 EP 2176013 B1 EP2176013 B1 EP 2176013B1 EP 08773279 A EP08773279 A EP 08773279A EP 08773279 A EP08773279 A EP 08773279A EP 2176013 B1 EP2176013 B1 EP 2176013B1
Authority
EP
European Patent Office
Prior art keywords
mandrel
forging
layer
mandrel body
hot
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.)
Revoked
Application number
EP08773279A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2176013A1 (de
Inventor
Stefan Wiedenmaier
Rolf Kümmerling
Gerd Homberg
Pierre Lefebvre
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.)
Vallourec Deutschland GmbH
Original Assignee
V&M Deutschland GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39670381&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2176013(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by V&M Deutschland GmbH filed Critical V&M Deutschland GmbH
Priority to PL08773279T priority Critical patent/PL2176013T3/pl
Publication of EP2176013A1 publication Critical patent/EP2176013A1/de
Application granted granted Critical
Publication of EP2176013B1 publication Critical patent/EP2176013B1/de
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D9/00—Bending tubes using mandrels or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group

Definitions

  • the invention relates to a forging mandrel for hot forging tubular workpieces made of metal according to the preamble of claim 1.
  • the hot forging of tubular workpieces is from the DE 10 2005 052 178 A1 known.
  • a first forming step by punching a thick-walled hollow block is generated, which then by a radial forging process using a forged indenter inserted into the hollow block as an internal tool and at least two acting on the outer surface of the hollow block forging jaws of a forging machine forged to a seamless pipe.
  • the hollow block is clocked rotated in the phase of the idle stroke of the forging jaws and moved axially.
  • the forging mandrel is subjected to considerable thermal and mechanical stresses during the forging process, resulting in wear on the tool surface and reducing the life of the forging mandrel.
  • the forging temperatures can be up to over 1300 ° C.
  • This forge is subject to several disadvantages. On the one hand, this forging is very complex and expensive to manufacture, on the other hand, the heat input is not reduced in the mandrel material, which reduces the dimensional stability of the forging mandrel at high temperature stress and thus leads to premature failure.
  • the object of the invention is to provide a forging mandrel for hot forging tubular workpieces made of metal, which is inexpensive to produce and has a high wear resistance at the same time great dimensional stability even at high forging temperatures.
  • the mandrel material is made of a heat-resistant alloy, wherein the mandrel body is provided at least in the work area with a heat dissipation during forging in the mandrel body reducing and firmly adhering to the mandrel body layer and the layer has at least a thickness of 50 microns.
  • the essential innovation of this invention is that the layer surrounding the mandrel body has a lower thermal conductivity than the mandrel body, whereby the heat input is significantly reduced in the mandrel body and thus a significantly improved dimensional stability is achieved even at high forging temperatures.
  • the layer has a thermal conductivity which is significantly lower than that of the mandrel body material, advantageously at least 50%.
  • the layer on the mandrel body can be produced according to the invention advantageously very inexpensively by scaling or by applying a corresponding layer z. B. by thermal processes.
  • a scaling of the dome is advantageous to apply in carbon steels, while in highly alloyed Dorntechnikstoffen the layer advantageous by thermal spraying method, such. B. flame or plasma spraying can be applied.
  • the thermally applied layers may contain, for example, zirconium oxide, aluminum oxide or iron oxide.
  • this layer can exert a recognizable effect with regard to a significantly reduced heat input into the mandrel body, it is advantageous to carry out the layer with a minimum thickness of about 50 ⁇ m.
  • the forging mandrel according to the invention has not only advantages in terms of improved dimensional stability even at high forging temperatures, but also with regard to a reduction of abrasive wear. Research has shown that there is some lubricity of the coating material during forging, which reduces abrasive wear.
  • Essential for the selection of a suitable material for the mandrel body is to match this to the particular material to be forged so that welding of forging mandrel and forging workpiece is avoided.
  • the forging mandrel according to the invention has the advantageous effect that the layer acts on the mandrel body as a release layer, which counteracts welding under forging pressure and temperature.
  • the forging mandrel shown in the single figure has a provided with chamfers 3, 4 mandrel body 1 which is fixed to a support rod 2.
  • the support rod 2 is required to axially and rotatably move the forging mandrel in a tubular workpiece, not shown here.
  • the mandrel body 1 consists of a heat-resistant steel which according to the invention is provided with a layer 5 which reduces the heat input into the mandrel body 1 in the working area.
  • the layer 5 in this case has a significantly lower thermal conductivity than the material of the mandrel body 1 in order to reduce the heat input and thus to ensure the dimensional stability of the mandrel body 1, even at high forging temperatures.
  • the mandrel body 1 is formed in the present case as a solid body, but it is also possible to provide this with an internal cooling to dissipate the unavoidable heat input into the mandrel body 1 during the forging as quickly as possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Coating By Spraying Or Casting (AREA)
EP08773279A 2007-07-10 2008-06-25 Schmiededorn zum warmschmieden rohrförmiger werkstücke aus metall Revoked EP2176013B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08773279T PL2176013T3 (pl) 2007-07-10 2008-06-25 Przebijak kowalski do kucia na gorąco mających kształt rury przedmiotów obrabianych z metalu

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007032804A DE102007032804B3 (de) 2007-07-10 2007-07-10 Schmiededorn zum Warmschmieden rohrförmiger Werkstücke aus Metall
PCT/DE2008/001067 WO2009006873A1 (de) 2007-07-10 2008-06-25 Schmiededorn zum warmschmieden rohrförmiger werkstücke aus metall

Publications (2)

Publication Number Publication Date
EP2176013A1 EP2176013A1 (de) 2010-04-21
EP2176013B1 true EP2176013B1 (de) 2010-10-27

Family

ID=39670381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08773279A Revoked EP2176013B1 (de) 2007-07-10 2008-06-25 Schmiededorn zum warmschmieden rohrförmiger werkstücke aus metall

Country Status (17)

Country Link
US (1) US20100251794A1 (pl)
EP (1) EP2176013B1 (pl)
JP (1) JP2010532715A (pl)
KR (1) KR20100030628A (pl)
CN (1) CN101743077B (pl)
AR (1) AR067462A1 (pl)
AT (1) ATE485903T1 (pl)
AU (1) AU2008274744B2 (pl)
BR (1) BRPI0812826A2 (pl)
CA (1) CA2693450A1 (pl)
DE (2) DE102007032804B3 (pl)
EA (1) EA015221B1 (pl)
ES (1) ES2355125T3 (pl)
PL (1) PL2176013T3 (pl)
UA (1) UA96053C2 (pl)
WO (1) WO2009006873A1 (pl)
ZA (1) ZA200908608B (pl)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2241386A1 (de) * 2009-04-16 2010-10-20 Felss GmbH Umformwerkzeug zur Herstellung eines Innenprofils, insbesondere einer Innenverzahnung, eines Werkstücks
DE102009053166B4 (de) 2009-11-02 2015-02-19 V & M Deutschland Gmbh Verfahren und Einrichtung zum optimierten Stangenumlauf bei der Herstellung eines nahtlos warmgefertigten Stahlrohres nach dem Rohrkontiverfahren
AT511745B1 (de) * 2011-08-12 2014-09-15 Gfm Gmbh Vorrichtung zum schmieden eines hohlkörpers
AT511748B1 (de) * 2011-08-12 2014-04-15 Gfm Gmbh Vorrichtung zum schmieden eines hohlkörpers
DE102013219310A1 (de) 2013-09-25 2015-03-26 Gfm Gmbh Verfahren zum Warmschmieden eines nahtlosen Hohlkörpers aus schwer umformbarem Werkstoff, insbesondere aus Stahl
CN104275363A (zh) * 2013-11-30 2015-01-14 阜新华通管道有限公司 高温高压管件用无缝钢管随形胎锻造方法
JP6521369B2 (ja) * 2015-05-11 2019-05-29 日立金属株式会社 熱間鍛造用金型
US11122741B2 (en) * 2018-01-30 2021-09-21 Cnh Industrial America Llc Stalk roller assembly for an agricultural system
CN117920927B (zh) * 2024-01-31 2026-05-08 西安稀有金属材料研究院有限公司 一种锆合金燃料组件导向管的高精度制备装置和方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT350356B (de) * 1977-08-30 1979-05-25 Gfm Fertigungstechnik Schmiededorn
JPS5913924B2 (ja) * 1979-12-25 1984-04-02 日本鋼管株式会社 穿孔圧延機用芯金
JPS61110770A (ja) * 1984-11-01 1986-05-29 Sumitomo Electric Ind Ltd 熱間加工用超硬合金工具
JPH01135143U (pl) * 1988-03-09 1989-09-14
CA2025302A1 (en) * 1989-12-26 1991-06-27 General Electric Company Reinforced microlaminted metal-matrix-composite structure
JP3191008B2 (ja) * 1991-04-04 2001-07-23 日立金属株式会社 熱間工具鋼
JP3124442B2 (ja) * 1994-06-21 2001-01-15 新日本製鐵株式会社 傾斜機能を有する鍛造用工具及びその製造方法
CN2458107Y (zh) * 2000-12-27 2001-11-07 中国科学院广州能源研究所 一种锻模的电辐射预热装置
DE10124866A1 (de) * 2001-05-22 2002-12-05 Peter Schuele Werkzeug für Biegemaschine
JP2004066246A (ja) * 2002-08-01 2004-03-04 Osg Corp 球面バニッシュ転造丸ダイス、及び、その製造方法
JP2004255429A (ja) * 2003-02-26 2004-09-16 Honda Motor Co Ltd 高ヤング率高疲労強度鋼の加工方法
CN2657903Y (zh) * 2003-12-11 2004-11-24 株洲时代新材料科技股份有限公司 中大型橡胶模具加热器
EP1728566B1 (en) * 2004-03-11 2012-08-29 Sumitomo Metal Industries, Ltd. Seamless pipe producing device and seamless pipe producing method using them
DE102005052178B4 (de) * 2004-10-25 2008-06-19 V&M Deutschland Gmbh Verfahren zum Herstellen eines nahtlos warmgefertigten Stahlrohres
CN100358652C (zh) * 2005-12-06 2008-01-02 武汉理工大学 一种热锻模及其制备方法
US7587923B1 (en) * 2006-07-12 2009-09-15 Raul Garza Method of making a tubular
JP4910693B2 (ja) * 2006-12-28 2012-04-04 住友金属工業株式会社 マンドレルバーへの潤滑剤の塗布方法、マンドレルバーへの潤滑剤の膜厚管理方法および継目無鋼管の製造方法。
JP5169982B2 (ja) * 2009-03-03 2013-03-27 新日鐵住金株式会社 プラグ、穿孔圧延機、およびそれを用いた継目無管の製造方法

Also Published As

Publication number Publication date
CN101743077B (zh) 2011-07-13
DE502008001670D1 (de) 2010-12-09
KR20100030628A (ko) 2010-03-18
EA201000187A1 (ru) 2010-06-30
DE102007032804B3 (de) 2008-09-04
EA015221B1 (ru) 2011-06-30
WO2009006873A9 (de) 2010-01-21
BRPI0812826A2 (pt) 2014-12-09
WO2009006873A1 (de) 2009-01-15
AU2008274744A1 (en) 2009-01-15
ATE485903T1 (de) 2010-11-15
AR067462A1 (es) 2009-10-14
AU2008274744A2 (en) 2010-04-15
AU2008274744B2 (en) 2011-07-14
ES2355125T3 (es) 2011-03-23
CA2693450A1 (en) 2009-01-15
UA96053C2 (ru) 2011-09-26
PL2176013T3 (pl) 2011-05-31
JP2010532715A (ja) 2010-10-14
ZA200908608B (en) 2011-02-23
US20100251794A1 (en) 2010-10-07
EP2176013A1 (de) 2010-04-21
CN101743077A (zh) 2010-06-16

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