This paper deals with the production of ASTM A216 Grade WCB steel having 0.5% Chromium with different chilling rates and to study the effect of chilling on the mechanical properties and wear resistance of the same. One metallic and one non-metallic chills were used for the study. Care is taken to have the same metal flow rate and pouring temperature for all the test castings. The specimens taken from casting blocks were tested for their strength, hardness and wear. It was concluded from the above investigation that both Chromium and chilling rates has an effect on mechanical properties. It was found that addition of Chromium has improved both mechanical properties (strength and hardness) and wear resistance of steel. Out of the two chills used the WCB steel produced using steel chill was found to be good in improving mechanical properties and wear resistance. However, improved mechanical properties are due to volumetric heat capacity of the chill and the composition of the steel especially its Chromium content.
Subzero, strength, hardness, chills, solidification
