Application of Unconstrained Cobalt and Aluminium Metal Powders in the Alloying of Carbon Steel in Submerged Arc Welding: Thermodynamic Analysis of Gas Reactions

The application of cobalt and aluminium powders in unconstrained format, not as metal powder tubular wire nor pre-alloyed powder, is used this work to simplify weld alloying. objective study demonstrate the Submerged Arc Welding SAW alloy control oxygen content. Aluminium potential at pool-slag interface order prevent oxidation cobalt. results presented here show that with addition 70% yield Cobalt was achieved from metal. carbon steel base-plate material materials combination were alloyed 5.3% Co 4.2% Al, whilst controlling total content 230 ppm. Thermodynamic analysis applied investigate possible chemical interaction reactions between Al compounds, well role on pool. ensures productivity gains overall process because time consuming expensive manufacturing are eliminated.