Final answer:
Cupolas are mainly used in the metal casting industry for melting and refining various metals, including cast iron, steel, aluminum, and brass. They provide heat and are used to pour melted metal into molds to create desired shapes.
Step-by-step explanation:
Cupolas are mainly used in the metal casting industry. They are used to melt and refine various metals, including cast iron, steel, aluminum, and brass.
Cupolas are typically lined with refractory materials and fueled with coke or coal to provide heat. The metal is melted in the cupola and then poured into molds to create the desired shape.
Each metal has its specific casting requirements, but cupolas are commonly used for all types of metal casting.