Since all the above attributes are important factors in any process of production the solidification phenomenon takes a vital role in any field. Let us discuss in detail about the factor freezing range, which takes a vital role in the casting solidification process.
Generally the melting point associated with alloys to be caste is not fixed. The process of solidification of these alloys takes place at different ranges in temperature. The two important terms used in this aspect are liquidus and solidus.
The liquidius refers to the temperature higher than which the ally to be cast remains in full liquid state. The solidus refers to the temperature below which the alloy to be cast remains in full solid state. The difference between these two temperatures is coined as freezing range. For instance if Tl is used to refer the liquidius and Ts refer to the solidus then the difference between these two namely referred as freezing range denoted by FR is given as
FR = Tl - Ts
The zones that could be referred in general during the above solidification process are there in number. They are :
Fully Solid
Fully Liquid