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A continuous casting machine is used to cast molten metal in a continuous stream, commonly with steel and copper. Metal is placed in a ladle, then poured into a tundish, cooled, and shaped by rollers. The machine can only produce simple shapes, and other machines are often used to further shape the metal.
A continuous casting machine is a device used to cast molten metal in a continuous stream; it is commonly used with steel and copper. This process begins in a small bowl, called a ladle, which heats and melts the metal, which is then poured into a larger bowl, called a tundish. After the metal has cooled slightly, it travels into a mold and passes through rollers which shape it further. As the metal travels, it is cooled to ensure it holds its shape. The metal moves during the entire process, so complex shapes are typically difficult to make with a continuous casting machine.
To initiate casting with a continuous casting machine, metal is placed in a ladle. The metal may have previously been smelted in a large furnace, or the ladle may be heated to melt the metal. A small tap allows the metal to travel into the tundish, which is a larger bowl in the casting machine. Tap is used to keep the metal from flowing too fast, and the tap can be turned off if the tundish is full.
The molten metal will be cooled slightly in the tundish to make it easier to melt. A larger tap in the tundish allows metal to travel over a die. This is the part of the continuous casting machine that shapes the metal into its final shape, although the metal is technically still molten at this stage. The pressure from the machine causes the metal to flow steadily from the tundish to the die, which makes the process continuous.
The rollers are used immediately after the mold to shape and further push the molten metal. These usually keep the metal straight, and as the rollers are cooled with water, it will begin to cool and solidify the metal. The continuous casting machine finishes the metal at this point and pulls it out of the machine.
Setting up a continuous casting machine means that the castings must be very simple. This machine normally only produces strands, wires and straight shapes because they are easy to shape and make continuously. Complex shapes, such as faucets or machine parts, would be difficult to cast continuously, because the machine would have to stop to finish casting. Other forming machines are often coupled with this one to work the strand or wire, making it flatter or longer so it can be used for other purposes.
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