FR2117745A1 - Tube bending - by internally heating a small square section of the tube as it is bent - Google Patents

Tube bending - by internally heating a small square section of the tube as it is bent

Info

Publication number
FR2117745A1
FR2117745A1 FR7045088A FR7045088A FR2117745A1 FR 2117745 A1 FR2117745 A1 FR 2117745A1 FR 7045088 A FR7045088 A FR 7045088A FR 7045088 A FR7045088 A FR 7045088A FR 2117745 A1 FR2117745 A1 FR 2117745A1
Authority
FR
France
Prior art keywords
tube
bent
small square
bending
square 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
FR7045088A
Other languages
French (fr)
Other versions
FR2117745B1 (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.)
Alstom SA
Original Assignee
Alstom 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 Alstom SA filed Critical Alstom SA
Priority to FR7045088A priority Critical patent/FR2117745A1/en
Priority to DE19712161355 priority patent/DE2161355A1/en
Publication of FR2117745A1 publication Critical patent/FR2117745A1/en
Application granted granted Critical
Publication of FR2117745B1 publication Critical patent/FR2117745B1/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
    • B21D9/00—Bending tubes using mandrels or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • General Induction Heating (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

A small area of tube is heated at the same moment as the tube is bent and this area is moved according to the displacement of the deformation region. Tubes may be bent to a small radius of curvature without the need for an internal mandrel. Right angle tube sections can be obtd. which are scarecely deformed and which show little thining of the extrados. This bending method can be used in existing bending appts. The heating area is usually a small square, the side of which is 3-5 times the tube thickness. The tube may be heated internally or externally.
FR7045088A 1970-12-14 1970-12-14 Tube bending - by internally heating a small square section of the tube as it is bent Granted FR2117745A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7045088A FR2117745A1 (en) 1970-12-14 1970-12-14 Tube bending - by internally heating a small square section of the tube as it is bent
DE19712161355 DE2161355A1 (en) 1970-12-14 1971-12-10 Heat bending process for metal pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7045088A FR2117745A1 (en) 1970-12-14 1970-12-14 Tube bending - by internally heating a small square section of the tube as it is bent

Publications (2)

Publication Number Publication Date
FR2117745A1 true FR2117745A1 (en) 1972-07-28
FR2117745B1 FR2117745B1 (en) 1973-12-07

Family

ID=9065776

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7045088A Granted FR2117745A1 (en) 1970-12-14 1970-12-14 Tube bending - by internally heating a small square section of the tube as it is bent

Country Status (2)

Country Link
DE (1) DE2161355A1 (en)
FR (1) FR2117745A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2922127A1 (en) * 2007-10-15 2009-04-17 Jaubjaub Consulting Sarl MACHINE FOR BENDING A PROFILE AND BENDING TOOLS FOR SUCH A MACHINE

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3149557A1 (en) * 1981-12-15 1983-07-21 Rigobert Dipl.-Ing. 5000 Köln Schwarze PIPE BENDING MACHINE WITH A SWIVELING BENDING TABLE
DE3240799A1 (en) * 1982-11-04 1984-05-17 Rigobert Dipl.-Ing. 5000 Köln Schwarze PIPE BENDING MACHINE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR845774A (en) * 1938-05-05 1939-09-01 Pont A Mousson Fond Improved method and device for bending pipes, bars, sheets and other parts
DE721900C (en) * 1940-07-11 1942-06-22 Eisenwerke Ag Deutsche Method and device for straightening workpieces made of magnetizable materials
FR1095980A (en) * 1953-02-19 1955-06-08 Babcock & Wilcox France Method and apparatus for bending tubes or pipes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR845774A (en) * 1938-05-05 1939-09-01 Pont A Mousson Fond Improved method and device for bending pipes, bars, sheets and other parts
DE721900C (en) * 1940-07-11 1942-06-22 Eisenwerke Ag Deutsche Method and device for straightening workpieces made of magnetizable materials
FR1095980A (en) * 1953-02-19 1955-06-08 Babcock & Wilcox France Method and apparatus for bending tubes or pipes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2922127A1 (en) * 2007-10-15 2009-04-17 Jaubjaub Consulting Sarl MACHINE FOR BENDING A PROFILE AND BENDING TOOLS FOR SUCH A MACHINE
WO2009087297A1 (en) * 2007-10-15 2009-07-16 Jaubjaub Consulting Machine for bending a profile in two bending directions and bending tool
US8616036B2 (en) 2007-10-15 2013-12-31 Eaton Leonard Europe Machine for bending a profile in two bending directions and bending tool

Also Published As

Publication number Publication date
FR2117745B1 (en) 1973-12-07
DE2161355A1 (en) 1972-06-15

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Legal Events

Date Code Title Description
ST Notification of lapse