Centrifugal casting is of different types suitable for different sizes of applications. The casting process is known for producing conical applications including pipes of various kinds. This is why we’ll be discussing the various types of centrifugal casting here today and their working principle.
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Contents
Types of centrifugal casting
Types used in manufacturing industries are the following:
True centrifugal casting
True centrifugal casting is a casting technique employed when producing a part with an axis symmetrical, with a uniform diameter. It contains a cylindrical mold that rotates about its axis at a specific speed.
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Molten metal is poured through the center, which is thrown to the wall of the mold. Due to the centrifugal force applied to it. It solidifies and the casting is taken out of the mold. Thickness in this type of casting is determined by the amount of poured liquid metal. This type of centrifugal casting has a directional solidification as its cooling starts from outside to inside.
The central core is not required just as semi-centrifugal casting. It also has a fast production rate, because casting can easily be removed when solidified. This type of casting offers very high quality, sometimes 100%. However, true centrifugal casting required a very investment, and skilled labor must be employed. True centrifugal casting is used in the manufacturing of bearings for machines, pipes, liners for IC engines, rings, and other annular castings.
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Semi-centrifugal casting
Semi-centrifugal casting is similar to true centrifugal casting, but they have a slight difference. It is used in casting items like wheels, sheaves, blanks, etc. Semi-centrifugal casting is carryout on a vertically mounted machine. Rotating in a vertical or concentric axis, at a low spinning speed. Speed range between 180 to 200 rpm. Gateway is needed to have directional solidification. In this type of centrifugal casting, more than one item can be produced at a time. Due to the stacking of multiple numbers of molds.
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Centrifuge casting
Centrifuge casting is another type of casting method used in casting unsymmetrical castings in groups. It is carried out in a group in order to produce an equal part in the whole casting. The rotation axis of the mold doesn’t coincide with each other in centrifuge casting. It helps to induce pressure in the mold as casting rotates at the center. Molten metal is fed to mold cavities by centrifugal forces. Centrifuge casting offers better quality, produces a large rate in less time, economical as the cost of cleaning and fettling is reduced.
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Working principle of centrifugal casting
The working principle of centrifugal casting is carryout by pouring molten metal into a spinning mold, pre-heated to some certain temperature. Mold type can either be vertical or horizontal depending on the type of item to be produced. The mold rotates at a certain speed. Controlled by an electric motor, causing the molten metal to rotate about its central axis. At this point, the poured molten metal is thrown into the mold walls. Molten metal spread uniformly to the walls creating cylindrical shapes. Nothing like a defect in pouring in centrifugal casting. More molten metal is poured till the required size and shape are obtained.
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Watch the video below to learn the working of centrifugal casting:
That is all for this article, where the various types of centrifugal casting and their working principle are being discussed. I hope you get a lot from the reading, if so, kindly share with other students. Thanks for reading, see you next time!
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