EP2351623B1 - Verfahren zur herstellung eines verformten querschnitts und formartikel mit vierseitigem querschnitt mit hervorragender punktschweissfähigkeit - Google Patents

Verfahren zur herstellung eines verformten querschnitts und formartikel mit vierseitigem querschnitt mit hervorragender punktschweissfähigkeit Download PDF

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Publication number
EP2351623B1
EP2351623B1 EP09816295.1A EP09816295A EP2351623B1 EP 2351623 B1 EP2351623 B1 EP 2351623B1 EP 09816295 A EP09816295 A EP 09816295A EP 2351623 B1 EP2351623 B1 EP 2351623B1
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Prior art keywords
mpa
tubing material
loaded
internal pressure
girth
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EP09816295.1A
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English (en)
French (fr)
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EP2351623A1 (de
EP2351623A4 (de
Inventor
Toyohisa Shinmiya
Koji Suzuki
Osamu Sonobe
Yuji Hashimoto
Rinsei Ikeda
Akio Sato
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JFE Steel Corp
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JFE Steel Corp
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    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/041—Means for controlling fluid parameters, e.g. pressure or temperature
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/02—Making hollow objects characterised by the structure of the objects
    • B21D51/06—Making hollow objects characterised by the structure of the objects folded objects
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Claims (4)

  1. Verfahren zur Formgebung eines Gegenstandes von komplexer Querschnittsgestalt, wobei ein Rohrmaterial mittels eines Formwerkzeugs von komplexer Querschnittsgestalt, das mindestens eine Fläche mit einem flachen Abschnitt aufweist, in einem Zustand gequetscht wird, in dem kein Innendruck beaufschlagt ist oder ein Innendruck von 50 MPa oder weniger in dem Rohrmaterial durch Flüssigkeit beaufschlagt ist, und durch kontinuierliches Beaufschlagen des Rohrmaterials durch die Flüssigkeit mit einem Innendruck zu einer komplexen Querschnittsgestalt geformt wird; dadurch gekennzeichnet, dass:
    das Rohrmaterial eine Zugfestigkeit von 690 MPa oder mehr aufweist, der maximale Innendruck durch das kontinuierliche Beaufschlagen höher als 50 MPa ist und dass das Rohrmaterial derart geformt wird, dass eine Zuwachsrate an Umfang nach dem Formgeben höher als oder gleich dem folgenden A % und kleiner als oder gleich 11,0 % ist: A = 4 , 167 × 10 − 3 × TS − 590
    Figure imgb0013
     wobei Zuwachsrate an Umfang = Außenumfang des Gegenstandes / Außenumfang des Rohrmaterials vor dem Formgeben − 1 × 100 % ,
    Figure imgb0014
    A: untere Grenze der Zuwachsrate des Umfangs (%),
    TS: Zugfestigkeit des Rohrmaterials (MPa).
  2. Verfahren zur Formgebung eines Gegenstandes von komplexer Querschnittsgestalt nach Anspruch 1, dadurch gekennzeichnet, dass ein Rohrende gegen eine Mitte in eine Rohrachsenrichtung eingedrückt wird, indem zusätzlich zu dem Beaufschlagen mit dem Innendruck nach dem Quetschen eine Kompressionskraft in der Rohrachsenrichtung auf das Rohrende angewandt wird.
  3. Verfahren zur Formgebung eines Gegenstandes von komplexer Querschnittsgestalt nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein Stahlrohr mit einer Zugfestigkeit von 780 MPa oder mehr als das Rohrmaterial benutzt wird und das Rohrmaterial derart geformt wird, dass die Zuwachsrate des Umfangs nach dem Formgeben höher als oder gleich dem folgenden A % und kleiner als oder gleich 10,0 % ist: A = 4 , 167 × 10 − 3 × TS − 590
    Figure imgb0015
     wobei A: untere Grenze der Zuwachsrate des Umfangs (%), TS: Zugfestigkeit des Rohrmaterials (MPa).
  4. Verfahren zur Formgebung eines Gegenstandes von komplexer Querschnittsgestalt nach einem von Anspruch bis 3, dadurch gekennzeichnet, dass ein Stahlrohr, dessen Verhältnis t/D von einer Dicke zu einem Außendurchmesser 0,05 oder weniger beträgt, als das Rohrmaterial benutzt wird.
EP09816295.1A 2008-09-25 2009-09-24 Verfahren zur herstellung eines verformten querschnitts und formartikel mit vierseitigem querschnitt mit hervorragender punktschweissfähigkeit Active EP2351623B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2008246271 2008-09-25
JP2008246268 2008-09-25
PCT/JP2009/067123 WO2010035883A1 (ja) 2008-09-25 2009-09-24 異形断面への成形方法およびスポット溶接性に優れた四辺形断面成形品

Publications (3)

Publication Number Publication Date
EP2351623A1 EP2351623A1 (de) 2011-08-03
EP2351623A4 EP2351623A4 (de) 2012-10-31
EP2351623B1 true EP2351623B1 (de) 2016-08-17

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EP09816295.1A Active EP2351623B1 (de) 2008-09-25 2009-09-24 Verfahren zur herstellung eines verformten querschnitts und formartikel mit vierseitigem querschnitt mit hervorragender punktschweissfähigkeit

Country Status (4)

Country Link
EP (1) EP2351623B1 (de)
KR (2) KR101322229B1 (de)
CN (1) CN102164690A (de)
WO (1) WO2010035883A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102672026B (zh) * 2012-05-28 2014-03-26 哈尔滨工业大学 奥氏体不锈钢管材内高压成形中抑制马氏体相变的方法
US9545657B2 (en) * 2014-06-10 2017-01-17 Ford Global Technologies, Llc Method of hydroforming an extruded aluminum tube with a flat nose corner radius
US20150315666A1 (en) 2014-04-30 2015-11-05 Ford Global Technologies, Llc Induction annealing as a method for expanded hydroformed tube formability
JP6670543B2 (ja) * 2014-12-11 2020-03-25 住友重機械工業株式会社 成形装置及び成形方法
CN106311857B (zh) * 2015-12-21 2017-11-07 青岛世冠装备科技有限公司 一种复杂截面中空构件低压镦胀成形方法
CN105562516B (zh) * 2016-03-15 2018-03-30 哈尔滨工业大学 一种变截面异形管件充液压制成形方法
CN107243538A (zh) * 2017-08-08 2017-10-13 天津天锻航空科技有限公司 一种由小周长圆管成形大周长矩形的方法
CN111957804B (zh) * 2020-07-20 2021-06-29 燕山大学 用于薄壁管材充液弯曲成形的装置及其成形方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5339667A (en) * 1993-04-19 1994-08-23 General Motors Corporation Method for pinch free tube forming
JPH10156429A (ja) * 1996-11-29 1998-06-16 Hitachi Ltd 複雑異形断面管の成形方法及び同装置
JP3206505B2 (ja) * 1997-08-06 2001-09-10 住友金属工業株式会社 金属管の液圧バルジ加工方法および液圧バルジ加工装置
JP4086216B2 (ja) * 1999-03-02 2008-05-14 株式会社エフテック パイプ材のハイドロフォーミング方法
JP2001096316A (ja) * 1999-09-27 2001-04-10 Nkk Corp 鋼管のハイドロフォーミング方法
US6257035B1 (en) * 1999-12-15 2001-07-10 Ti Corporate Services Limited Compressive hydroforming
JP4631130B2 (ja) 2000-05-25 2011-02-16 住友金属工業株式会社 異形管状製品およびその製造方法
IT1320503B1 (it) * 2000-06-16 2003-12-10 Iveco Fiat Procedimento per la produzione di assali per veicoli industriali.
JP2002220069A (ja) * 2001-01-25 2002-08-06 Mitsubishi Motors Corp 車体部材
JP3854812B2 (ja) * 2001-03-27 2006-12-06 新日本製鐵株式会社 自動車用強度部材
JP3972006B2 (ja) * 2003-02-27 2007-09-05 新日本製鐵株式会社 ハイドロフォーム加工方法及びハイドロフォーム加工用金型

Also Published As

Publication number Publication date
EP2351623A1 (de) 2011-08-03
KR20130083492A (ko) 2013-07-22
KR20110046557A (ko) 2011-05-04
WO2010035883A1 (ja) 2010-04-01
KR101322229B1 (ko) 2013-10-28
CN102164690A (zh) 2011-08-24
EP2351623A4 (de) 2012-10-31

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