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 polymerInfo
- 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- Withdrawn
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.
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) |
-
1979
- 1979-01-25 FR FR7901928A patent/FR2447245A1/en not_active Withdrawn
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |