welding-alloys.com 9 Low alloyed steels This section presents our ROBOFIL range of seamless cored wires, which are hermetically sealed by laser welding to prevent hydrogen absorption and reduce the risk of cold cracking. These cored wires offer a very low amount of diffusible hydrogen (<4ml/100g) for single or multipass welding of general engineering and structural parts. Part of the ROBOFIL range is made up of metal cored wires (M). • Metal cored wires have similar welding characteristics to those of solid wires, and can be used right from the root pass through to the filling passes. Metal cored wires provide more flexibility in terms of the parameter range and offer higher productivity thanks to faster travel speeds and higher deposition rates. Additionally, the ROBOFIL family is made up of flux cored wires producing either a rutile slag (R) or basic slag (B). • Rutile flux cored wires are renowned for their excellent weldability, with low spatter and a soft arc. ROBOFIL R products have a fast freezing slag, making them well-suited for out of position welding. The slag releases from the weld independently. However, rutile slag wires have limitations in terms of mechanical properties performance, such as impact test results. • Basic flux cored wires are ideal when high mechanical properties are required. These wires consist of special minerals, which reduce the weld metal oxygen content and enhance the weld metal performance. However, they have a slow freezing slag, making them suitable only for flat welding positions. In both cases, the slag serves to shield the weld from oxidation and atmospheric contamination, resulting in a superior final weld. Product ROBOFIL M ROBOFIL R ROBOFIL B SPEEDARC / ROBOFIL T Welding process GMAW FCAW-G FCAW-G FCAW-S Wire type Metal cored Flux cored Flux cored Flux cored Slag No slag Fast freezing rutile slag Basic slag Basic slag Shielding gas M21: Ar + 15 - 25% CO2 M21: Ar + 15 - 25% CO2 M21: Ar + 15 - 25% CO2 No gas Welding positions * ** *Out of position welding also possible using short circuit or pulsed arc modes of transfer **SPEEDARC T11 can be also welded in vertical down position under negative polarity DCBack to contents page
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