In continuous casting, molten steel transforms into solid steel ingots. In this process, first, the molten metal is poured from the ladle into the continuous casting machine and passes through the cooled water mold. Water passing through the jacket water, after cooling the mold enters a heat exchanger and transfers heat to the cooling water. In the next step, the cooled molten material solidifies and quenches after leaving mold, by means of spraying water. The water heated in contact with the molten steel, enters a heat exchanger and is cooled by heat transfer to the water of cooling tower until it reaches the appropriate temperature for quenching and is sprayed again onto the cooled molten material; Finally, the steel comes out in the form of hot and red slabs and cut to the desired size.