WO2009006873A1 - Schmiededorn zum warmschmieden rohrförmiger werkstücke aus metall - Google Patents
Schmiededorn zum warmschmieden rohrförmiger werkstücke aus metall Download PDFInfo
- Publication number
- WO2009006873A1 WO2009006873A1 PCT/DE2008/001067 DE2008001067W WO2009006873A1 WO 2009006873 A1 WO2009006873 A1 WO 2009006873A1 DE 2008001067 W DE2008001067 W DE 2008001067W WO 2009006873 A1 WO2009006873 A1 WO 2009006873A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mandrel
- forging
- layer
- mandrel body
- hot
- Prior art date
Links
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.
- a first forming step by punching a thick-walled hollow block is generated, which then by a radial forging process using a forged mandrel inserted into the hollow block as an internal tool and at least two acting on the lateral 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 0 C.
- 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 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 is provided 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 dome 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)
Abstract
Description
Claims
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08773279A EP2176013B1 (de) | 2007-07-10 | 2008-06-25 | Schmiededorn zum warmschmieden rohrförmiger werkstücke aus metall |
AU2008274744A AU2008274744B2 (en) | 2007-07-10 | 2008-06-25 | Forging mandrel for hot-forging tubular workpieces of metal |
BRPI0812826-0A2A BRPI0812826A2 (pt) | 2007-07-10 | 2008-06-25 | Mandril de forjadura para forjar a quente peças a trabalhar tubulares de metal |
AT08773279T ATE485903T1 (de) | 2007-07-10 | 2008-06-25 | Schmiededorn zum warmschmieden rohrförmiger werkstücke aus metall |
US12/668,282 US20100251794A1 (en) | 2007-07-10 | 2008-06-25 | Forging mandrel for hot-forging tubular workpieces of metal |
CA2693450A CA2693450A1 (en) | 2007-07-10 | 2008-06-25 | Forging mandrel for hot-forging tubular workpieces of metal |
PL08773279T PL2176013T3 (pl) | 2007-07-10 | 2008-06-25 | Przebijak kowalski do kucia na gorąco mających kształt rury przedmiotów obrabianych z metalu |
CN200880023941XA CN101743077B (zh) | 2007-07-10 | 2008-06-25 | 用于热锻管状金属工件的锻造模芯 |
DE502008001670T DE502008001670D1 (de) | 2007-07-10 | 2008-06-25 | Schmiededorn zum warmschmieden rohrförmiger werkstücke aus metall |
JP2010515345A JP2010532715A (ja) | 2007-07-10 | 2008-06-25 | 金属製管状ワークを熱間鍛造するための鍛造芯金 |
EA201000187A EA015221B1 (ru) | 2007-07-10 | 2008-06-25 | Ковочная оправка для горячей ковки трубчатых заготовок из металла |
ZA2009/08608A ZA200908608B (en) | 2007-07-10 | 2009-12-03 | Forging mandrel for hot-forging tubular workpieces of metal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007032804.6 | 2007-07-10 | ||
DE102007032804A DE102007032804B3 (de) | 2007-07-10 | 2007-07-10 | Schmiededorn zum Warmschmieden rohrförmiger Werkstücke aus Metall |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009006873A1 true WO2009006873A1 (de) | 2009-01-15 |
WO2009006873A9 WO2009006873A9 (de) | 2010-01-21 |
Family
ID=39670381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2008/001067 WO2009006873A1 (de) | 2007-07-10 | 2008-06-25 | Schmiededorn zum warmschmieden rohrförmiger werkstücke aus metall |
Country Status (17)
Country | Link |
---|---|
US (1) | US20100251794A1 (de) |
EP (1) | EP2176013B1 (de) |
JP (1) | JP2010532715A (de) |
KR (1) | KR20100030628A (de) |
CN (1) | CN101743077B (de) |
AR (1) | AR067462A1 (de) |
AT (1) | ATE485903T1 (de) |
AU (1) | AU2008274744B2 (de) |
BR (1) | BRPI0812826A2 (de) |
CA (1) | CA2693450A1 (de) |
DE (2) | DE102007032804B3 (de) |
EA (1) | EA015221B1 (de) |
ES (1) | ES2355125T3 (de) |
PL (1) | PL2176013T3 (de) |
UA (1) | UA96053C2 (de) |
WO (1) | WO2009006873A1 (de) |
ZA (1) | ZA200908608B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013219310A1 (de) | 2013-09-25 | 2015-03-26 | Gfm Gmbh | Verfahren zum Warmschmieden eines nahtlosen Hohlkörpers aus schwer umformbarem Werkstoff, insbesondere aus Stahl |
Families Citing this family (7)
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 |
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 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2825940A1 (de) * | 1977-08-30 | 1979-03-15 | Gfm Fertigungstechnik | Schmiededorn |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 (de) * | 1988-03-09 | 1989-09-14 | ||
CA2025302A1 (en) * | 1989-12-26 | 1991-06-27 | John R. Rairden, Iii | 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 (de) * | 2004-03-11 | 2012-08-29 | Sumitomo Metal Industries, Ltd. | Vorrichtung zur herstellung nahtloser rohre und diese verwendendes verfahren zur herstellung nahtloser rohre |
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 |
-
2007
- 2007-07-10 DE DE102007032804A patent/DE102007032804B3/de active Active
-
2008
- 2008-06-25 AU AU2008274744A patent/AU2008274744B2/en not_active Ceased
- 2008-06-25 EP EP08773279A patent/EP2176013B1/de not_active Revoked
- 2008-06-25 US US12/668,282 patent/US20100251794A1/en not_active Abandoned
- 2008-06-25 WO PCT/DE2008/001067 patent/WO2009006873A1/de active Application Filing
- 2008-06-25 AT AT08773279T patent/ATE485903T1/de active
- 2008-06-25 BR BRPI0812826-0A2A patent/BRPI0812826A2/pt not_active IP Right Cessation
- 2008-06-25 ES ES08773279T patent/ES2355125T3/es active Active
- 2008-06-25 JP JP2010515345A patent/JP2010532715A/ja not_active Withdrawn
- 2008-06-25 DE DE502008001670T patent/DE502008001670D1/de active Active
- 2008-06-25 CN CN200880023941XA patent/CN101743077B/zh not_active Expired - Fee Related
- 2008-06-25 UA UAA201001359A patent/UA96053C2/ru unknown
- 2008-06-25 PL PL08773279T patent/PL2176013T3/pl unknown
- 2008-06-25 CA CA2693450A patent/CA2693450A1/en not_active Abandoned
- 2008-06-25 KR KR1020097027175A patent/KR20100030628A/ko not_active IP Right Cessation
- 2008-06-25 EA EA201000187A patent/EA015221B1/ru not_active IP Right Cessation
- 2008-07-07 AR ARP080102919A patent/AR067462A1/es active IP Right Grant
-
2009
- 2009-12-03 ZA ZA2009/08608A patent/ZA200908608B/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2825940A1 (de) * | 1977-08-30 | 1979-03-15 | Gfm Fertigungstechnik | Schmiededorn |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013219310A1 (de) | 2013-09-25 | 2015-03-26 | Gfm Gmbh | Verfahren zum Warmschmieden eines nahtlosen Hohlkörpers aus schwer umformbarem Werkstoff, insbesondere aus Stahl |
Also Published As
Publication number | Publication date |
---|---|
CN101743077B (zh) | 2011-07-13 |
EA201000187A1 (ru) | 2010-06-30 |
DE502008001670D1 (de) | 2010-12-09 |
ES2355125T3 (es) | 2011-03-23 |
UA96053C2 (ru) | 2011-09-26 |
ATE485903T1 (de) | 2010-11-15 |
JP2010532715A (ja) | 2010-10-14 |
CN101743077A (zh) | 2010-06-16 |
KR20100030628A (ko) | 2010-03-18 |
AU2008274744B2 (en) | 2011-07-14 |
PL2176013T3 (pl) | 2011-05-31 |
DE102007032804B3 (de) | 2008-09-04 |
AR067462A1 (es) | 2009-10-14 |
AU2008274744A2 (en) | 2010-04-15 |
WO2009006873A9 (de) | 2010-01-21 |
EA015221B1 (ru) | 2011-06-30 |
ZA200908608B (en) | 2011-02-23 |
AU2008274744A1 (en) | 2009-01-15 |
US20100251794A1 (en) | 2010-10-07 |
BRPI0812826A2 (pt) | 2014-12-09 |
EP2176013B1 (de) | 2010-10-27 |
CA2693450A1 (en) | 2009-01-15 |
EP2176013A1 (de) | 2010-04-21 |
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