Answer:
The metal casting make use of the different characteristics of liquids and solid because:
In metal casting they focus on the melting point of the metal, for which <u>they apply the amount of fuel and oxygen to increase the temperature of the boiler above the melting point of the metal</u>, after casting they use molds to give it the desired shape and allow the metal to cool, once it falls <u>below the melting point temperature it acquires the rigidity to be handled, polished or cut, because the particles are more agglomerated than in their liquid state</u>.
Explanation:
Suppose you want to make the door for a car, the selected material is <u>steel</u>, in order to give it the shape of the car, in particular, <u>you have a mold with the shape of the door, in the first instance you proceed to heat the steel to more than 1375 ° C</u>, once the temperature exceeds said degrees the steel goes into a liquid state and allows it to be poured onto the mold (due to the malleability it acquires in this state), <u>once it is deposited in the mold it is allowed to cool, with which the steel particles will join providing rigidity to the metal</u>, on which other works such as polishing may be carried out later.