EP1112787A3 - Gas-tight flexible welded pipe, apparatus for making same and manufacturing process - Google Patents

Gas-tight flexible welded pipe, apparatus for making same and manufacturing process Download PDF

Info

Publication number
EP1112787A3
EP1112787A3 EP00125604A EP00125604A EP1112787A3 EP 1112787 A3 EP1112787 A3 EP 1112787A3 EP 00125604 A EP00125604 A EP 00125604A EP 00125604 A EP00125604 A EP 00125604A EP 1112787 A3 EP1112787 A3 EP 1112787A3
Authority
EP
European Patent Office
Prior art keywords
strip
spiral
gas
manufacturing process
making same
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
EP00125604A
Other languages
German (de)
French (fr)
Other versions
EP1112787A2 (en
EP1112787B1 (en
Inventor
Vittorio Travini
Livio Travini
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.)
Olimpia 80 SRL
Original Assignee
Olimpia 80 SRL
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 Olimpia 80 SRL filed Critical Olimpia 80 SRL
Publication of EP1112787A2 publication Critical patent/EP1112787A2/en
Publication of EP1112787A3 publication Critical patent/EP1112787A3/en
Application granted granted Critical
Publication of EP1112787B1 publication Critical patent/EP1112787B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/122—Making tubes or metal hoses with helically arranged seams with welded or soldered seams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Making Paper Articles (AREA)

Abstract

A gas-tight tube is formed starting from a strip of partially corrugated sheet metal (10) with longitudinal corrugations (12), assembled in a spiral with overlapping edges and welded.
The manufacturing process comprises winding the sheet metal strip (10) upon itself in a spiral so that a corrugated portion (11) of a strip length externally overlaps a flat portion (13) of a previously wound strip length, and welding the overlapping portions to each other.
The apparatus (20) comprises a feeding device for feeding the corrugated strip (10), to a rotating mandrel (32) with which pressure rollers (52) collaborate to bend the strip (10) in a spiral; downstream of the mandrel (32) it comprises a welding device (60) that welds the overlapping portions of the spiral of metal strip (10).
EP00125604A 1999-12-30 2000-11-22 Apparatus and manufacturing process for making a gas-tight flexible welded pipe Expired - Lifetime EP1112787B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI992753 1999-12-30
IT1999MI002753A IT1314350B1 (en) 1999-12-30 1999-12-30 SMOKE SEALED FLEXIBLE HOSE, PERREALIZE EQUIPMENT AND PRODUCTION PROCESS

Publications (3)

Publication Number Publication Date
EP1112787A2 EP1112787A2 (en) 2001-07-04
EP1112787A3 true EP1112787A3 (en) 2002-07-31
EP1112787B1 EP1112787B1 (en) 2006-02-01

Family

ID=11384231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00125604A Expired - Lifetime EP1112787B1 (en) 1999-12-30 2000-11-22 Apparatus and manufacturing process for making a gas-tight flexible welded pipe

Country Status (5)

Country Link
EP (1) EP1112787B1 (en)
AT (1) ATE316829T1 (en)
DE (1) DE60025790T2 (en)
ES (1) ES2258436T3 (en)
IT (1) IT1314350B1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB940888A (en) * 1961-01-26 1963-11-06 Rheinmetall Gmbh Method of manufacturing threaded spindles
US3721793A (en) * 1971-07-19 1973-03-20 Inst Elektroswarki Patona Spiral-seam weld pipe and tube mill
US3857159A (en) * 1973-09-27 1974-12-31 Pacific Roller Die Co Inc Pipe forming method
DE2645946A1 (en) * 1976-10-12 1978-04-13 Pforzheim Metallschlauch Metal or plastic corrugated tubing - made by spirally overlapping together lengths of corrugated section tape or tube
NL8702946A (en) * 1987-12-07 1989-07-03 Dec Holding Bv Mfg. thin-walled aluminium tube - which has smooth walls formed by stripp of flexible foil wound up on mandrel, possibly in overlapping parts, helically, or in continuous stri
EP0408538A2 (en) * 1989-07-10 1991-01-16 MOLDRICH METALLWAREN, GESELLSCHAFT M.B.H. & CO. KG Method of producing tubes from a metal strip

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB940888A (en) * 1961-01-26 1963-11-06 Rheinmetall Gmbh Method of manufacturing threaded spindles
US3721793A (en) * 1971-07-19 1973-03-20 Inst Elektroswarki Patona Spiral-seam weld pipe and tube mill
US3857159A (en) * 1973-09-27 1974-12-31 Pacific Roller Die Co Inc Pipe forming method
DE2645946A1 (en) * 1976-10-12 1978-04-13 Pforzheim Metallschlauch Metal or plastic corrugated tubing - made by spirally overlapping together lengths of corrugated section tape or tube
NL8702946A (en) * 1987-12-07 1989-07-03 Dec Holding Bv Mfg. thin-walled aluminium tube - which has smooth walls formed by stripp of flexible foil wound up on mandrel, possibly in overlapping parts, helically, or in continuous stri
EP0408538A2 (en) * 1989-07-10 1991-01-16 MOLDRICH METALLWAREN, GESELLSCHAFT M.B.H. & CO. KG Method of producing tubes from a metal strip

Also Published As

Publication number Publication date
IT1314350B1 (en) 2002-12-09
ITMI992753A0 (en) 1999-12-30
ITMI992753A1 (en) 2001-06-30
ES2258436T3 (en) 2006-09-01
EP1112787A2 (en) 2001-07-04
EP1112787B1 (en) 2006-02-01
DE60025790T2 (en) 2006-11-02
DE60025790D1 (en) 2006-04-13
ATE316829T1 (en) 2006-02-15

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