BEAD GEOMETRY WITH CRUSHED SLAG IN SUBMERGED ARC WELDING
Keywords:
Reuse, Slag, Flux, Submerged Arc Welding, Bead GeometryAbstract
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 not only solve these problems but also be economical. An attempt has been made to reuse slag as a flux in submerged arc welding. Slag was crushed and sieved to grain size of original flux. This crushed slag was used as a flux in submerged arc welding. Beads on plates were deposited. A specimen about 20 mm wide was removed from the centre of plate, polished and etched with Nital. Bead profile i.e. penetration, bead width and reinforcement was measured. Mathematical models were developed from the data generated which are useful for prediction of bead geometry. The adequacy of developed models and significance of the coefficients was tested by the ‘F’ test and Student’s ‘t’ test respectively. Acceptable bead geometry was achieved using crushed slag.
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References
Visvanath P S (1982), “Submerged Arc Welding Fluxes”, Indian Welding Journal, Vol. 15 (1), 1-11.
Honavar D S (2006), “Cost Effective Productivity in Welded Fabrication”, Technology. Trends, Vol. 9, 13-16.
Beck H P, and Jackson A R (1996), “Recycling of SAW Slag Proves Reliable and Repeatable”, Welding Journal, Vol. 75(6), 51-54.
Livshit L G and Shiryaev A I (1960), “A New Ceramic Flux for Hard Facing”, Welding Production, Vol. 1 (2), 25-29.
Pal P K, Bandyopadbyay A and Moi S C (2001), “Submerged Arc Welding with a Mixture of Fresh Flux and Fused Slag”, Proceedings of National Seminar on Advances in Materials & Processing, IIT., Roorkee, India, 98-102.
Singh K and Pandey S (2009), “Recycling of Slag to Act as a Flux in Submerged Arc Welding”, Resources, Conservation and Recycling, Vol. 53(2009), 552-558.
Adler Y P, Markova V and Granovskoy V (1975), “The Design of Experiments to Find Optimal Conditions”, Mir Publications, Moscow.
