FR2241353A1 - Rolling tube from sandwiched metal sheet - metal insert strip is rolled into joint, followed by resistance welding - Google Patents

Rolling tube from sandwiched metal sheet - metal insert strip is rolled into joint, followed by resistance welding

Info

Publication number
FR2241353A1
FR2241353A1 FR7424248A FR7424248A FR2241353A1 FR 2241353 A1 FR2241353 A1 FR 2241353A1 FR 7424248 A FR7424248 A FR 7424248A FR 7424248 A FR7424248 A FR 7424248A FR 2241353 A1 FR2241353 A1 FR 2241353A1
Authority
FR
France
Prior art keywords
rolled
followed
joint
resistance welding
sandwiched
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
FR7424248A
Other languages
French (fr)
Other versions
FR2241353B3 (en
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.)
FISCHETTI PASQUALE IT
Original Assignee
FISCHETTI PASQUALE IT
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 FISCHETTI PASQUALE IT filed Critical FISCHETTI PASQUALE IT
Publication of FR2241353A1 publication Critical patent/FR2241353A1/en
Application granted granted Critical
Publication of FR2241353B3 publication Critical patent/FR2241353B3/fr
Granted 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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/16—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
    • B23K11/163—Welding of coated materials
    • 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/09—Making tubes with welded or soldered seams of coated strip material ; Making multi-wall tubes
    • 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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/08—Seam welding not restricted to one of the preceding subgroups
    • B23K11/087—Seam welding not restricted to one of the preceding subgroups for rectilinear seams
    • B23K11/0873—Seam welding not restricted to one of the preceding subgroups for rectilinear seams of the longitudinal seam of tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Package Frames And Binding Bands (AREA)
  • Arc Welding In General (AREA)

Abstract

The metal sheet is covered, at least on one side, with a metallic corrosion-resistant layer, and is bent by rolling, bringing the edges together to form a join prior to welding. A continuous metallic corrosion resistant strip is inserted in the join during the rolling operation, such that, on welding, the corrosion resistant layer of the sheet and the insert are made to form a continuous connection. To this end the strip preferably has a rectangular cross-section whose height equals the thickness of the sandwiched sheet material.
FR7424248A 1973-07-06 1974-07-05 Rolling tube from sandwiched metal sheet - metal insert strip is rolled into joint, followed by resistance welding Granted FR2241353A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT26310/73A IT991034B (en) 1973-07-06 1973-07-06 PROCESS FOR THE FORMING OF PIPES WITH A TREATED SURFACE AND PIPES OBTAINED

Publications (2)

Publication Number Publication Date
FR2241353A1 true FR2241353A1 (en) 1975-03-21
FR2241353B3 FR2241353B3 (en) 1977-05-06

Family

ID=11219196

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7424248A Granted FR2241353A1 (en) 1973-07-06 1974-07-05 Rolling tube from sandwiched metal sheet - metal insert strip is rolled into joint, followed by resistance welding

Country Status (6)

Country Link
DE (1) DE2432336A1 (en)
ES (1) ES428281A1 (en)
FR (1) FR2241353A1 (en)
IT (1) IT991034B (en)
NL (1) NL7409115A (en)
NO (1) NO742459L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3630625A1 (en) * 1986-09-09 1988-03-17 Benteler Werke Ag Method for the production of an internally galvanised pipe (tube)
DE4001825A1 (en) * 1990-01-23 1991-07-25 Mannstaedt Werke Gmbh & Co Anticorrosion coated steel pipe welding
DE19915574A1 (en) * 1999-03-30 2000-10-12 Sms Demag Ag Process for the production of the internally and / or externally tinned hollow profile and internally tinned copper tube

Also Published As

Publication number Publication date
NO742459L (en) 1975-02-03
DE2432336A1 (en) 1975-01-30
NL7409115A (en) 1975-01-08
IT991034B (en) 1975-07-30
ES428281A1 (en) 1976-07-16
FR2241353B3 (en) 1977-05-06

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Legal Events

Date Code Title Description
ST Notification of lapse