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
  • B23K9/14—Arc welding or cutting making use of insulated electrodes
  • B23K9/142—Drag welding, the arc length being determined by an insulated layer between the welding electrode and the welding spot or seam
  • B23K9/145—Drag welding, the arc length being determined by an insulated layer between the welding electrode and the welding spot or seam the insulated welding electrode being laid along the seam
• • 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
  • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
  • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
  • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
  • B23K35/0261—Rods, electrodes, wires

Definitions

• the invention relates to a method in compliance with the introductory section of the claim 1 and to a 5 welding element in compliance with the introductory sec ⁇ tion of the claim 7 for making- a welding seam by a longitudinally to the welding object placed elongated welding electrode.
• The- advantages of the invention include that higher professional skills are not necessarily required for the welder to make successfully a welding seam, that welding is rapid and that by using the welding method and electrode according to the invention time-consuming changes of the welding rod are avoided. Moreover it must be stated, that the welding trace made according to the invention is absolutely smooth and does not in ⁇ clude any slag closures, edge cuts etc. deteriorating the weld.
• the welding electrode according to the invention comprises a core bar 5 coated on its side placed against the welding object by coating 6 and melting as the welding proceeds.
• the coated core bar can be replaced by a so-called core filling bar with the advantage of better bending qualities.
• the conically tapering cross section shown in the figure suits particularly well for welding of so-called U-seams or for example sheets with a bevelled groove at their edges to their place e.g. as cover plates.
• the mentioned conical form is not, however, essential for the purpose of the invention, but also other sectional profiles can be used in the welding electrode depending on the welding adaptation and the desired seam.
• the welding current is conveyed to the welding electrode through a conductive, preferably liquid medium, which is drawn hydraulically regulated along the weldin elect- rode to promote the welding process.
• a conductive, preferably liquid medium which is drawn hydraulically regulated along the weldin elect- rode to promote the welding process.
• a medium liquid ⁇ . mercury can be used with good electrical conductivity, as is generally known.
• Naturally also other conductive electrolytes can be used without negative influences to 5 the action of the invention.
• the welding electrode according to the in ⁇ vention includes in this exemplary case a tubular flow channel element 3, which can be at its both or at least
• the flow channel element 3 is connected to a con-
• the conductive portion is composed of a strip made of metal, preferably cop ⁇ per, and extending as wide as the welding electrode to
• the other portion of the flow channel element 3 is made of a suitable, e.g. plastic-based flexible
• the conductive portion 4 can be made of a thin and
• the welding electrode can be stored f.ex. in rolls and a proper piece of it can be cut for each object of use.
• the welding current is conveyed to the electrode by a liquid electrolyte.
• the electrolyte is connected to the positive pole of the electric source and the welding object to the negative pole.
• a flow limiting member 2 which goes with the medium flow tightly pressed against the walls defining the flow channel 1 before or after the medium depending mostly on the fact, whether the medium is drawn by suction or pumping.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Plasma & Fusion (AREA)
• Arc Welding In General (AREA)
• Butt Welding And Welding Of Specific Article (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8520666

Family Applications (1)

Country Status (6)

• 1985
  • 1985-04-12 FI FI851467A patent/FI72066C/fi not_active IP Right Cessation
• 1986
  • 1986-04-10 EP EP19860902411 patent/EP0217900A1/en not_active Withdrawn
  • 1986-04-10 DE DE19863690185 patent/DE3690185T1/de not_active Withdrawn
  • 1986-04-10 AU AU58138/86A patent/AU5813886A/en not_active Abandoned
  • 1986-04-10 GB GB08629757A patent/GB2185205A/en not_active Withdrawn
  • 1986-04-10 WO PCT/FI1986/000038 patent/WO1986006015A1/en active Application Filing

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events