Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
  • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
  • B21C37/0822—Guiding or aligning the edges of the bent sheet
• • 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
• • 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
• • 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
  • B23K13/00—Welding by high-frequency current heating
  • B23K13/04—Welding by high-frequency current heating by conduction heating
  • B23K13/043—Seam welding
  • B23K13/046—Seam welding for tubes

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Pressure Welding/Diffusion-Bonding (AREA)
• Butt Welding And Welding Of Specific Article (AREA)
• Arc Welding In General (AREA)
• General Induction Heating (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=23216613

Family Applications (1)

Country Status (13)

Families Citing this family (3)

Family Cites Families (7)

• 1972
  • 1972-12-11 US US05/313,664 patent/US3944775A/en not_active Expired - Lifetime
• 1973
  • 1973-09-26 CA CA181,983A patent/CA995766A/en not_active Expired
  • 1973-10-26 IE IE1938/73A patent/IE38429B1/xx unknown
  • 1973-11-07 DE DE2355522A patent/DE2355522C3/de not_active Expired
  • 1973-11-07 GB GB5172873A patent/GB1448104A/en not_active Expired
  • 1973-11-16 IT IT31408/73A patent/IT1001794B/it active
  • 1973-12-04 NL NL7316600A patent/NL7316600A/xx unknown
  • 1973-12-10 BR BR9653/73A patent/BR7309653D0/pt unknown
  • 1973-12-10 BE BE138728A patent/BE808469A/xx unknown
  • 1973-12-10 JP JP48136923A patent/JPS4989664A/ja active Pending
  • 1973-12-10 LU LU68966A patent/LU68966A1/xx unknown
  • 1973-12-11 ES ES421363A patent/ES421363A1/es not_active Expired
  • 1973-12-11 FR FR7344136A patent/FR2209620B1/fr not_active Expired

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