FR2446139A1 - Bending of metal tube to small radius - has radial tapered cuts formed in intrados before tube is bent and cut edges welded together - Google Patents

Bending of metal tube to small radius - has radial tapered cuts formed in intrados before tube is bent and cut edges welded together

Info

Publication number
FR2446139A1
FR2446139A1 FR7832890A FR7832890A FR2446139A1 FR 2446139 A1 FR2446139 A1 FR 2446139A1 FR 7832890 A FR7832890 A FR 7832890A FR 7832890 A FR7832890 A FR 7832890A FR 2446139 A1 FR2446139 A1 FR 2446139A1
Authority
FR
France
Prior art keywords
intrados
bending
tube
small radius
cut edges
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
FR7832890A
Other languages
French (fr)
Other versions
FR2446139B1 (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.)
MAZELLIER SERGE
Original Assignee
MAZELLIER SERGE
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 MAZELLIER SERGE filed Critical MAZELLIER SERGE
Priority to FR7832890A priority Critical patent/FR2446139A1/en
Publication of FR2446139A1 publication Critical patent/FR2446139A1/en
Application granted granted Critical
Publication of FR2446139B1 publication Critical patent/FR2446139B1/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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/08—Bending by altering the thickness of part of the cross-section of the work
    • 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
    • B21D7/00—Bending rods, profiles, or tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

The process is used to bend e.g. steel tubes to a relatively small radius and entails the cutting of tapered incisions (1) in the pipe barrel (F). The incisions (1) which lie normal to the longitudinal tube axis, take the form of acutely angled 'V' notches. These extend through the major proportion of the tubes lateral dimension, and are provided at close centres, and open out on the intrados of the proposed bend. The process does not stress the tube metal, and the cut member being completed by bending, argon-welding of the abutting cut edges (e), and polishing.
FR7832890A 1978-11-22 1978-11-22 Bending of metal tube to small radius - has radial tapered cuts formed in intrados before tube is bent and cut edges welded together Granted FR2446139A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7832890A FR2446139A1 (en) 1978-11-22 1978-11-22 Bending of metal tube to small radius - has radial tapered cuts formed in intrados before tube is bent and cut edges welded together

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7832890A FR2446139A1 (en) 1978-11-22 1978-11-22 Bending of metal tube to small radius - has radial tapered cuts formed in intrados before tube is bent and cut edges welded together

Publications (2)

Publication Number Publication Date
FR2446139A1 true FR2446139A1 (en) 1980-08-08
FR2446139B1 FR2446139B1 (en) 1981-07-17

Family

ID=9215168

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7832890A Granted FR2446139A1 (en) 1978-11-22 1978-11-22 Bending of metal tube to small radius - has radial tapered cuts formed in intrados before tube is bent and cut edges welded together

Country Status (1)

Country Link
FR (1) FR2446139A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2541937A1 (en) * 1983-03-03 1984-09-07 Vallourec COMPOSITE PRODUCT WITH AGGREGATED TUBULAR METAL ENVELOPE AND PULVERULENT WAVE FOR WINDING
US4564826A (en) * 1984-04-06 1986-01-14 Andrew Corporation Multiple mitered circular waveguide bend
EP0644003A2 (en) * 1993-09-08 1995-03-22 Emilio Cruz Barbosa Procedures for the elaboration, handling and industrial use of flexible metallic profiles
FR2982181A1 (en) * 2011-11-07 2013-05-10 Emmanuel Guilloux METHOD FOR BENDING PARTICULARLY TUBULAR PROFILES
DE102022132224A1 (en) 2022-12-05 2024-06-06 Knorr-Bremse Gesellschaft Mit Beschränkter Haftung DOOR LEAF FOR A RAIL VEHICLE AND METHOD FOR PRODUCING A DOOR LEAF

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1552435A (en) * 1968-01-18 1969-01-03
US3753366A (en) * 1971-02-08 1973-08-21 J White Process of bending structural members and tool therefor
FR2310814A1 (en) * 1975-05-12 1976-12-10 Leroux Sa Ets PROCESS FOR BENDING THICK PROFILES, OBTAINED PROFILE AND ITS APPLICATION TO GLASS FRAMES AND THE LIKE
DE2614023A1 (en) * 1976-04-01 1977-10-06 Festo Maschf Stoll G Tubular metal frame with easily formed curved corners - has incisions at curvature point forming smooth exterior when bent

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1552435A (en) * 1968-01-18 1969-01-03
US3753366A (en) * 1971-02-08 1973-08-21 J White Process of bending structural members and tool therefor
FR2310814A1 (en) * 1975-05-12 1976-12-10 Leroux Sa Ets PROCESS FOR BENDING THICK PROFILES, OBTAINED PROFILE AND ITS APPLICATION TO GLASS FRAMES AND THE LIKE
DE2614023A1 (en) * 1976-04-01 1977-10-06 Festo Maschf Stoll G Tubular metal frame with easily formed curved corners - has incisions at curvature point forming smooth exterior when bent

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2541937A1 (en) * 1983-03-03 1984-09-07 Vallourec COMPOSITE PRODUCT WITH AGGREGATED TUBULAR METAL ENVELOPE AND PULVERULENT WAVE FOR WINDING
EP0118378A2 (en) * 1983-03-03 1984-09-12 Vallourec Longitudinally folded metal tube containing a flux and reelable powder wire
EP0118378A3 (en) * 1983-03-03 1984-11-14 Vallourec Longitudinally folded metal tube containing a flux and reelable powder wire
US4564826A (en) * 1984-04-06 1986-01-14 Andrew Corporation Multiple mitered circular waveguide bend
EP0644003A2 (en) * 1993-09-08 1995-03-22 Emilio Cruz Barbosa Procedures for the elaboration, handling and industrial use of flexible metallic profiles
EP0644003A3 (en) * 1993-09-08 1995-05-10 Barbosa Emilio Cruz Procedures for the elaboration, handling and industrial use of flexible metallic profiles.
FR2982181A1 (en) * 2011-11-07 2013-05-10 Emmanuel Guilloux METHOD FOR BENDING PARTICULARLY TUBULAR PROFILES
DE102022132224A1 (en) 2022-12-05 2024-06-06 Knorr-Bremse Gesellschaft Mit Beschränkter Haftung DOOR LEAF FOR A RAIL VEHICLE AND METHOD FOR PRODUCING A DOOR LEAF
EP4406807A1 (en) * 2022-12-05 2024-07-31 Knorr-Bremse Gesellschaft mit beschränkter Haftung Door leaf for a rail vehicle and method for producing a door leaf

Also Published As

Publication number Publication date
FR2446139B1 (en) 1981-07-17

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Legal Events

Date Code Title Description
GC Lien (pledge) constituted
GC Lien (pledge) constituted
ST Notification of lapse
AR Application made for restoration
DE Withdrawal due to an action of restoration