Study on Submerged Arc Welding Slag Recycling for Stainless Steel Welding: A Review

Abstract

The submerged arc welding process is the type of fusion welding process that uses a continuously moving electrode towards the workpiece. The granular flux is used in submerged arc welding, which is kept in the hopper and flows through the nozzle ahead of the weld pool. When the arc is generated between electrode and workpiece, the flux melts and form molten slag Submerged arc welding uses a granular flux that is converted to slag during welding. The generated slag is treated as waste that contains residues of minerals and is non- biodegradable. Due to its non-biodegradable nature, it creates an environmental problem, hence needs safe disposal. A huge amount of land and cost is incurred for its safe disposal. The study was undertaken to reduce these problems with submerged arc welding slag. For recycling SAW slag, Agglomerated fluxes were prepared by mixing different amounts of alloying element and deoxidizer (by hit and trial) to the milled slag and using potassium silicate as a binder. It was found that the addition of SiO2 (8%), Cr2O3 (4%), TiO2(3%), MnO (2%) gave the desired weld chemistry, according to ASTM A 240 for SS 304. 

Cite as

Atul Tiwari, & Aditya Narayan Bhatt. (2023). Study on Submerged Arc Welding Slag Recycling for Stainless Steel Welding: A Review. Recent Trends in Production Engineering, 6(2), 43–50. https://doi.org/10.5281/zenodo.8285096