Kjellberg Finsterwalde offers a new multi-wire welding plant for more efficient submerged-arc welding. In contrast to traditional SAW welding, two or more wire electrodes are arranged one after another, form a collective cavern and, thereby, create a considerably higher melt volume. The melting deposition rate increases with every further wire electrode used. The welding speed may be as high as 120 cm/min which is considerably higher compared to the single-wire technology.

The first welding wire fed by the DC power source GTH 1000 produces the optimum penetration by way of high welding current. The following wire electrodes fill the joint with their welding heads being fed each by one AC power source TTH 1000. The multi-wire equipment can be adapted to portals and columns and booms as well as rotating devices. The equipment will be arranged and adapted for each welding task.

Further details:

• Powder feeding is possible via pressure tank and combined with different pneumatic extraction systems
• Seam tracing visual (laser) or mechanical (tactile)
• Manual fine adjustment of the welding heads via motor-driven linear support
• Central control unit
• Optional welding data recording and parameter filing

The submerged-arc welding is a high-performance welding method which guarantees excellent quality. The cavern is covered with a powder layer and, thus, atmospheric influences are excluded and the undesirable open arc can be avoided. These features allow a mechanisation of the entire process.