Rutile, all positional wires
These give exceptional productivity in positional welding, due to a fast freezing slag that supports the weld metal, while allowing high welding currents. A single current/voltage setting can be applied for all welding positions. The wires are characterized by a smooth spray arc droplet transfer with very low spatter losses. Slag is easily removed and welds have a nice appearance. Root runs are welded economically on ceramic weld metal support.
Suited for single- and multi-pass welds. Diffusible hydrogen class EN H5 and AWS class H4 - typically 2-3 ml/100g weld metal, in mixed gas (1-2 ml/100g weld metal in 100% CO2).
Basic, downhand wires
These give good weldability and productivity in the flat and horizontal-vertical positions. They yield very clean welds with high elongation and impact toughness and good crack resistance, and are therefore often used for constructions with a high restraint and for root passes. Very low spatter losses. Slag release is acceptable and welds have a nice appearance. Use of ceramic weld metal support is an option for more productive welding of root runs.
Suited for single- and multi-pass welds. Diffusible hydrogen class EN H5 and AWS class H4 - typically 1-3 ml/100g weld metal.
Metal-cored, all-positional wires
These have highest weld metal recovery, because they produce hardly any slag. Multi-run welds can be performed without removing the few silicate islands present on the surface of beads. They are therefore often used for mechanized or robotized welding, but also for manual operations when removal of slag is not desirable. They are often applied for root pass welding. Use of ceramic weld metal support is an option.
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