Problems in Up-Hill Casting Refractories at Durgapur Steel Plant

Investigations have been carried out to trace out the origin of non-metallic inclusions in railway wheel ingots and rolled railway wheels, produced at Durgapur Steel Plant. It has been shown from the X-ray studies that majority of the inclusions originate from refractory ware. A laboratory survey has been made on the properties of casting pit ware used in the plant, from four suppliers. In general, properties are not satisfactory as far as workmanship, coarse grog size in the brick and variation in apparent properties arc concerned.