FR2447245A1 - Welding of metal parts possessing internal lining - esp. where polymer pipe is sepd. from outer steel pipe by air gap, so heat created in welding the steel does not damage polymer - Google Patents

Welding of metal parts possessing internal lining - esp. where polymer pipe is sepd. from outer steel pipe by air gap, so heat created in welding the steel does not damage polymer

Info

Publication number
FR2447245A1
FR2447245A1 FR7901928A FR7901928A FR2447245A1 FR 2447245 A1 FR2447245 A1 FR 2447245A1 FR 7901928 A FR7901928 A FR 7901928A FR 7901928 A FR7901928 A FR 7901928A FR 2447245 A1 FR2447245 A1 FR 2447245A1
Authority
FR
France
Prior art keywords
welding
pipe
polymer
air gap
steel
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.)
Withdrawn
Application number
FR7901928A
Other languages
French (fr)
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.)
Plastic Omnium SE
Original Assignee
Plastic Omnium SE
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 Plastic Omnium SE filed Critical Plastic Omnium SE
Priority to FR7901928A priority Critical patent/FR2447245A1/en
Publication of FR2447245A1 publication Critical patent/FR2447245A1/en
Withdrawn legal-status Critical Current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
    • B23K9/0026—Arc welding or cutting specially adapted for particular articles or work

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The parts to be welded together are assembled so an air gap is formed between the weld and the internal lining; and a spacer, made esp. of steel, is pref. located between the air gap and the lining, which is pref. PTFE. The air gap is pref. 1-15 mm wide; and the invention is used esp. to provide a monolithic T-pipe junction made of PTFE with an outer, tubular steel jacket. The jacket is made of two half shells welded round the T-pipe, but both an air gap and a steel spacer separate the jacket from the PTFE T-pipe. PTFE linings are not damaged when outer metal casings or pipes are welded together.
FR7901928A 1979-01-25 1979-01-25 Welding of metal parts possessing internal lining - esp. where polymer pipe is sepd. from outer steel pipe by air gap, so heat created in welding the steel does not damage polymer Withdrawn FR2447245A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7901928A FR2447245A1 (en) 1979-01-25 1979-01-25 Welding of metal parts possessing internal lining - esp. where polymer pipe is sepd. from outer steel pipe by air gap, so heat created in welding the steel does not damage polymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7901928A FR2447245A1 (en) 1979-01-25 1979-01-25 Welding of metal parts possessing internal lining - esp. where polymer pipe is sepd. from outer steel pipe by air gap, so heat created in welding the steel does not damage polymer

Publications (1)

Publication Number Publication Date
FR2447245A1 true FR2447245A1 (en) 1980-08-22

Family

ID=9221204

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7901928A Withdrawn FR2447245A1 (en) 1979-01-25 1979-01-25 Welding of metal parts possessing internal lining - esp. where polymer pipe is sepd. from outer steel pipe by air gap, so heat created in welding the steel does not damage polymer

Country Status (1)

Country Link
FR (1) FR2447245A1 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse