FR2387096A1 - Elongated flexible welding tool for internal welding of pipes - incorporates heated probe at one end of nylon or PTFE shaft - Google Patents

Elongated flexible welding tool for internal welding of pipes - incorporates heated probe at one end of nylon or PTFE shaft

Info

Publication number
FR2387096A1
FR2387096A1 FR7712111A FR7712111A FR2387096A1 FR 2387096 A1 FR2387096 A1 FR 2387096A1 FR 7712111 A FR7712111 A FR 7712111A FR 7712111 A FR7712111 A FR 7712111A FR 2387096 A1 FR2387096 A1 FR 2387096A1
Authority
FR
France
Prior art keywords
shaft
ptfe
nylon
bearing
welding
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.)
Pending
Application number
FR7712111A
Other languages
French (fr)
Inventor
William George Hill
Charles Michael Lawrence
Robert Allen Charles Bromwich
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.)
Foster Wheeler (London) Ltd
Original Assignee
Foster Wheeler (London) Ltd
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 Foster Wheeler (London) Ltd filed Critical Foster Wheeler (London) Ltd
Priority to FR7712111A priority Critical patent/FR2387096A1/en
Publication of FR2387096A1 publication Critical patent/FR2387096A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
    • B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
    • B23K9/0284—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections with an electrode working inside the tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/24—Features related to electrodes
    • B23K9/28—Supporting devices for electrodes
    • B23K9/29—Supporting devices adapted for making use of shielding means
    • B23K9/291—Supporting devices adapted for making use of shielding means the shielding means being a gas
    • B23K9/296—Supporting devices adapted for making use of shielding means the shielding means being a gas using non-consumable electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A welding tool incorporates an electrically heated probe at one end of a hollow shaft which can both flex longitudinally and rotate. The probe is mounted in a head of conductive metal supported by a flexible tubular shaft which is driven from an in-line bearing block at the other end of the shaft. The shaft, bearing and head incorporate passages for circulating coolant and for discharging inert gases in the vicinity of the probe tip and weld zone. The shaft is pref. made of nylon or PTFE, and usually has >=1 sleeve bearing of PTFE for low friction support when turning within a metal tube being welded internally. The drive end bearing block has a body made partly or wholly of e.g. Tufnol (RTM - paper filled phenolic moulging material). Adaptors of PTFE may be incorporated between the shaft and the welding or bearing heads.
FR7712111A 1977-04-14 1977-04-14 Elongated flexible welding tool for internal welding of pipes - incorporates heated probe at one end of nylon or PTFE shaft Pending FR2387096A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7712111A FR2387096A1 (en) 1977-04-14 1977-04-14 Elongated flexible welding tool for internal welding of pipes - incorporates heated probe at one end of nylon or PTFE shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7712111A FR2387096A1 (en) 1977-04-14 1977-04-14 Elongated flexible welding tool for internal welding of pipes - incorporates heated probe at one end of nylon or PTFE shaft

Publications (1)

Publication Number Publication Date
FR2387096A1 true FR2387096A1 (en) 1978-11-10

Family

ID=9189758

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7712111A Pending FR2387096A1 (en) 1977-04-14 1977-04-14 Elongated flexible welding tool for internal welding of pipes - incorporates heated probe at one end of nylon or PTFE shaft

Country Status (1)

Country Link
FR (1) FR2387096A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1097614A (en) * 1965-06-18 1968-01-03 Foster Wheeler Ltd Improvements in arc welding torches
FR2157200A5 (en) * 1971-10-21 1973-06-01 Citroen Sa

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1097614A (en) * 1965-06-18 1968-01-03 Foster Wheeler Ltd Improvements in arc welding torches
FR2157200A5 (en) * 1971-10-21 1973-06-01 Citroen Sa

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