Failure analysis of Rocker liner used as a charging system of blast furnace

(in lingua inglese)

In order to improve the carbide morphology, apart from heat treatment chemistry modification is integrated. The
chemistry of the sample #1 is more prone to formation of primary eutectic carbide. These carbides are quite deleterious to
impact toughness and should be avoided during casting. Higher carbon resulting more consumption of chromium, forming
addition carbide. Thus, carbon content has been lower by maintaining proper ratio with chromium content; so that the cast
structure is avoided form primary eutectic carbide formation. But the alloy elements (molybdenum, manganese, nickel and
copper) remain constant to avoid pearlite formation upon cooling during heat treatment.