Utilisation of steel slag as welding flux and its chemical and thermal characterisation

Abstract

A novel study on structural analysis of crystalline phases present in steel slag was conducted, which advocates the utilisation of steel slag for developing welding flux. This study plans to characterise chemical and thermal analysis of waste steel slag generated by steel making plant to ensure its compatibility and suitability for manufacturing of flux required for the submerged arc welding process. Based on these studies, five fluxes using steel slag as raw material were developed by the agglomeration process. The required deoxidisers and alloying elements were added during recycling to enhance their performance. The Spectro analysis of weld metal revealed that the carbon content of weld metal has increased from 0.04 to 0.06% with the addition of CaCO₃ from 10 to 12%.

KEYWORDS:

• Characterisation
• recycling
• thermal analysis
• steel slag
• welding flux

Disclosure statement

The Author(s) declare(s) that there is no conflict of interest. No potential conflict of interest was reported by the author(s).