The Development of the Alloy for an Oil Pyrolysis Furnace Coil Hanger

The chromium-nickel alloy doped with niobium, titanium, aluminum and modified by titanium complex – titanium carbonitride is developed for the manufacture of the oil pyrolysis furnace cast coil hanger. The application of a modifier has led to the improvement of the cast grain structure, morphology and topography of hardening phases. These changes have provided the heat resistance increasing and the structural stability of the cast alloy in use.