Bead Geometry with Crushed Slag in Submerged Arc

摘要

Slag generated during submerged arc welding is generally thrown away as a waste and poses storage and disposal problem, needs landfill space and environment pollution apart from exhaust of non-renewable resources. Reuse of fused slag will address all these problems. In this work an attempt has been made to use slag waste as a flux in the same sub arc process. Bead geometry obtained using crushed slag was evaluated. Operating characteristics of crushed slag during welding was observed. Favourable bead geometry was obtained using pure crushed slag as a flux. It was further observed that slag detachability, arc stability and bead appearance was satisfactory. Weld beads were free from surface defects.