Chapter 12, Problem 1RQ

Why are steels more difficult to cast than cast irons?

To determine

Why are steels more difficult to cast than cast irons?

Explanation of Solution

The steels melt at high temperatures (1650C). It also helps in the reactions of steels with oxygen in high intensity during melting and pouring of metal.

At times, the fluidity of molten steel is not good enough to be casted. Because there is increased amount of Silicon present in Cast Iron, its fluidity is more than that of Steel. But in some of the steels, increased amount of silicon is present.

The defect “MISRUN” comes into scene due to low fluidity. This is actually the drawback of a material to completely fill the Sand Casting Mold.

Hence, steel is difficult to cast than cast iron.