Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?
A. Silicon
B. Sulphur
C. Manganese
D. Phosphorus
Answer: Option A
Solution(By Examveda Team)
Silicon is the impurity in cast iron which promotes graphite nodule formation and increases the fluidity of the molten metal.This Question Belongs to Mechanical Engineering >> Engineering Materials
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Silicon make free graphite formation and phosphorus increases fluidity of the molten metal
So what is correct ans of these questions?
sulphur makes it hard and brittle and is of good casting cgaracteristics
phosporus increase fusibility and fluidity