Improving the Quality of Centrifugal Cast Pipes Made of Austenitic Stainless Steel

The problem of improving the quality of centrifugal pipes made of austenitic stainless steel is considered. It is proposed to tap ferro-titanium in a furnace under slag, after its deep deoxidation by REM-containing additive for receiving such pipes with high mechanical and service properties. Before tapping the melt from the furnace, the melt must be processed by nano-dispersed titanium carbonitride in the modifying briquette composition. Implementing the above conditions allows increasing the tensile strength of cast metal by 10-15%, plasticity by 30-45% with increasing resistance to intergranular corrosion (IGC) in the casting section.