Effect of heat input, activated flux & filler rod on Wear Properties and Dilution Percentage in mild Steel hard facing

Abstract

In this research, the effect of heat input, activated flux &filler rod on improving wear properties and dilution percentage was studied. The sample are made of 25 mm thick mild steel and hard faced with GTAW process using two type of flux TIO2, cr2o3 and filler rod HB60, HB65 at different heat input. The flux were used in powder form and applied on the mild steel plates like a paint strips mixed with acetone. The experimental results indicate that HB65 filler rod gives better result in abrasive wear with TIO2 flux at low heat input. The titanium addition refines the grain structure and a finer microstructure increase the wear resistance. TIO2 flux increases the dilution percentage than Cr2o3 to base metal. The electrode HB 65 improve the wear resistance up to 25% than the HB60.