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FR2477918B1 - - Google Patents

Info

Publication number
FR2477918B1
FR2477918B1 FR8005656A FR8005656A FR2477918B1 FR 2477918 B1 FR2477918 B1 FR 2477918B1 FR 8005656 A FR8005656 A FR 8005656A FR 8005656 A FR8005656 A FR 8005656A FR 2477918 B1 FR2477918 B1 FR 2477918B1
Authority
FR
France
Prior art keywords
blank
corresponding value
internal pressure
deformation
compression
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
Application number
FR8005656A
Other languages
French (fr)
Other versions
FR2477918A1 (en
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 SA
Original Assignee
Vallourec SA
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 Vallourec SA filed Critical Vallourec SA
Priority to FR8005656A priority Critical patent/FR2477918A1/en
Priority to AT81400387T priority patent/ATE9283T1/en
Priority to DE8181400387T priority patent/DE3165914D1/en
Priority to EP81400387A priority patent/EP0036365B1/en
Publication of FR2477918A1 publication Critical patent/FR2477918A1/en
Application granted granted Critical
Publication of FR2477918B1 publication Critical patent/FR2477918B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/29—Making branched pieces, e.g. T-pieces
    • B21C37/294—Forming collars by compressing a fluid or a yieldable or resilient mass in the tube

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Forging (AREA)

Abstract

1. A method for obtaining by the hydraulic bending process, pieces of such shapes as T, or bulb sections from blanks having the shape of a tubular cross section or a similar shape, wherein one applies mechanical compression in the longitudinal direction of the blank and then hydraulic pressure within the latter so as to obtain a deformation of the blank in the transverse direction, the method being characterized in that it comprises at least one stage consisting in measuring, when the longitudinal compression attains a predetermined value, the corresponding value, the corresponding value of the internal pressure and/or of the transverse deformation of the blank, and in determining, depending on the said corresponding value, the subsequent relationship between the internal pressure and the longitudinal compression.
FR8005656A 1980-03-13 1980-03-13 IMPROVED PROCESS FOR MANUFACTURING PARTS BY HYDROFLAMBING AND DEVICE FOR CARRYING OUT SAID METHOD Granted FR2477918A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR8005656A FR2477918A1 (en) 1980-03-13 1980-03-13 IMPROVED PROCESS FOR MANUFACTURING PARTS BY HYDROFLAMBING AND DEVICE FOR CARRYING OUT SAID METHOD
AT81400387T ATE9283T1 (en) 1980-03-13 1981-03-13 METHOD FOR COMPRESSION FORMING OF WORKPIECES AND DEVICE FOR PERFORMING THIS METHOD.
DE8181400387T DE3165914D1 (en) 1980-03-13 1981-03-13 Process for manufacturing workpieces by hydraulic-pressure shaping, and apparatus for carrying out this process
EP81400387A EP0036365B1 (en) 1980-03-13 1981-03-13 Process for manufacturing workpieces by hydraulic-pressure shaping, and apparatus for carrying out this process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8005656A FR2477918A1 (en) 1980-03-13 1980-03-13 IMPROVED PROCESS FOR MANUFACTURING PARTS BY HYDROFLAMBING AND DEVICE FOR CARRYING OUT SAID METHOD

Publications (2)

Publication Number Publication Date
FR2477918A1 FR2477918A1 (en) 1981-09-18
FR2477918B1 true FR2477918B1 (en) 1984-03-02

Family

ID=9239640

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8005656A Granted FR2477918A1 (en) 1980-03-13 1980-03-13 IMPROVED PROCESS FOR MANUFACTURING PARTS BY HYDROFLAMBING AND DEVICE FOR CARRYING OUT SAID METHOD

Country Status (4)

Country Link
EP (1) EP0036365B1 (en)
AT (1) ATE9283T1 (en)
DE (1) DE3165914D1 (en)
FR (1) FR2477918A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2535987B1 (en) * 1982-11-16 1988-06-03 Vallourec PROCESS FOR FORMING ONE OR MORE BULBS BY EXPANDING PLASTIC DEFORMATION OF THE WALL OF A TUBE SECTION
FR2536680B1 (en) * 1982-11-25 1986-11-28 Sdecc METHOD FOR MANUFACTURING A TEE TUBULAR CONNECTION
FR2654957B1 (en) * 1989-11-30 1992-03-13 Cuq Georges METHOD AND DEVICE FOR CALIBRATING A PART MADE BY A HYDROFLAMBING INSTALLATION.
DE4322424C1 (en) * 1993-07-06 1994-09-15 Schaefer Maschbau Wilhelm Method and device for producing a metal hollow item according to the internal high-pressure forming process
ATA134693A (en) * 1993-07-08 1999-10-15 Elb Form Gmbh METHOD FOR INNER PRESSURE-BASED FORMING OF METAL HOLLOW PROFILES AND DEVICE FOR IMPLEMENTING THIS METHOD
FR2744380B1 (en) * 1996-02-06 1998-08-28 Bas En Basset Soc Ind De INSTALLATION FOR THE MANUFACTURE OF PARTS BY HYDROFLAMBING
US5992197A (en) * 1997-03-28 1999-11-30 The Budd Company Forming technique using discrete heating zones
ES2154105B1 (en) * 1997-07-07 2001-12-01 Bas En Basset Soc Ind De INSTALLATION FOR THE MANUFACTURE OF PARTS BY SIDE HYDRODEFORMATION.
US6006568A (en) * 1998-03-20 1999-12-28 The Budd Company Multi-piece hydroforming tool
US6128936A (en) * 1998-09-09 2000-10-10 Kabushiki Kaisha Opton Bulging device and bulging method
CN107052127B (en) * 2017-06-12 2019-03-01 东营布鲁特新材料有限公司 A kind of high temperature gas expansion forming line production system and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1048482A (en) * 1950-09-18 1953-12-22 Ici Ltd Manufacture of branch pipe fittings
US3350905A (en) * 1963-12-21 1967-11-07 Agency Ind Science Techn Liquid pressure bulge forming apparatus
NL157225B (en) * 1969-12-17 1978-07-17 Tno DEVICE FOR MANUFACTURING AT LEAST ONE SPROUT ON A PIPE.

Also Published As

Publication number Publication date
EP0036365A1 (en) 1981-09-23
FR2477918A1 (en) 1981-09-18
EP0036365B1 (en) 1984-09-12
ATE9283T1 (en) 1984-09-15
DE3165914D1 (en) 1984-10-18

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Legal Events

Date Code Title Description
ST Notification of lapse