FR2447761A1 - Expansion of tube in collar or plate to make welded joint - where electric arc evaporates liq. in tube to obtain sudden hydraulic forming pressure - Google Patents

Expansion of tube in collar or plate to make welded joint - where electric arc evaporates liq. in tube to obtain sudden hydraulic forming pressure

Info

Publication number
FR2447761A1
FR2447761A1 FR7902536A FR7902536A FR2447761A1 FR 2447761 A1 FR2447761 A1 FR 2447761A1 FR 7902536 A FR7902536 A FR 7902536A FR 7902536 A FR7902536 A FR 7902536A FR 2447761 A1 FR2447761 A1 FR 2447761A1
Authority
FR
France
Prior art keywords
tube
liq
plate
collar
expansion
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
FR7902536A
Other languages
French (fr)
Other versions
FR2447761B1 (en
Inventor
Jean-Pierre Cartry
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.)
Barras Provence SA
Original Assignee
Barras Provence 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 Barras Provence SA filed Critical Barras Provence SA
Priority to FR7902536A priority Critical patent/FR2447761A1/en
Publication of FR2447761A1 publication Critical patent/FR2447761A1/en
Application granted granted Critical
Publication of FR2447761B1 publication Critical patent/FR2447761B1/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
    • B21D26/06—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 by shock waves
    • B21D26/12—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 by shock waves initiated by spark discharge

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Arc Welding In General (AREA)

Abstract

A tube is placed in a hole in a flange, collar or plate; and a mandrel forming one electrode is placed in the tube, which is then closed by a plug contg. an axial hole for a second electrode. The mandrel and plug contain holes via which a liq. can be fed into the tube; and an electric current is then fed to the two electrodes to create an arc. The arc causes evapn. of the liq. so a violent increase in hydraulic pressure occurs which expands the tube and welds it to the flange or plate. The second electrode is pref. mobile, and may consist of a consumable wire. The appts. can be automated for rapid mass prodn.
FR7902536A 1979-01-31 1979-01-31 Expansion of tube in collar or plate to make welded joint - where electric arc evaporates liq. in tube to obtain sudden hydraulic forming pressure Granted FR2447761A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7902536A FR2447761A1 (en) 1979-01-31 1979-01-31 Expansion of tube in collar or plate to make welded joint - where electric arc evaporates liq. in tube to obtain sudden hydraulic forming pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7902536A FR2447761A1 (en) 1979-01-31 1979-01-31 Expansion of tube in collar or plate to make welded joint - where electric arc evaporates liq. in tube to obtain sudden hydraulic forming pressure

Publications (2)

Publication Number Publication Date
FR2447761A1 true FR2447761A1 (en) 1980-08-29
FR2447761B1 FR2447761B1 (en) 1982-10-29

Family

ID=9221447

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7902536A Granted FR2447761A1 (en) 1979-01-31 1979-01-31 Expansion of tube in collar or plate to make welded joint - where electric arc evaporates liq. in tube to obtain sudden hydraulic forming pressure

Country Status (1)

Country Link
FR (1) FR2447761A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232085A (en) * 1959-08-31 1966-02-01 Inoue Kiyoshi Machining apparatus utilizing electro discharge pressure
FR1441275A (en) * 1965-07-27 1966-06-03 Brown Heavy Duty Forming Machine Tool
US3267710A (en) * 1962-09-24 1966-08-23 Inoue Kiyoshi Impulsive shaping and bonding of metals and other materials
GB1165902A (en) * 1966-05-04 1969-10-01 Nat Res Dev Improvements in Electrohydraulic Forming
FR2011539A1 (en) * 1968-06-24 1970-03-06 Siemens Ag
US3512384A (en) * 1965-11-18 1970-05-19 Inoue K Shaping apparatus using electric-discharge pressure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232085A (en) * 1959-08-31 1966-02-01 Inoue Kiyoshi Machining apparatus utilizing electro discharge pressure
US3267710A (en) * 1962-09-24 1966-08-23 Inoue Kiyoshi Impulsive shaping and bonding of metals and other materials
FR1441275A (en) * 1965-07-27 1966-06-03 Brown Heavy Duty Forming Machine Tool
US3512384A (en) * 1965-11-18 1970-05-19 Inoue K Shaping apparatus using electric-discharge pressure
GB1165902A (en) * 1966-05-04 1969-10-01 Nat Res Dev Improvements in Electrohydraulic Forming
FR2011539A1 (en) * 1968-06-24 1970-03-06 Siemens Ag

Also Published As

Publication number Publication date
FR2447761B1 (en) 1982-10-29

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Legal Events

Date Code Title Description
ST Notification of lapse