Home - Material Science - Different Types of Centrifugal Casting and their Working Principle

Different Types of Centrifugal Casting and their Working Principle

Centrifugal casting is of different types suitable for different sizes applications. The casting process is known for producing conical applications include pipes of various kinds. This is why we’ll be discussing the various types of centrifugal casting here today and their working principle.

Read more: Understanding centrifugal casting

What is centrifugal casting?

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.

Read more: Different Types of Die Casting and its applications

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.

Read more: What are the investment casting process, its applications, and its advantages

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 a 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 mold.

Read more: Understanding sand casting process

Centrifuge casting

Centrifuge casting is another type of casting method used in casting unsymmetrical castings in groups. It is carryout 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 feed 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 reduce.

Read more: 4 common types of metal casting processes

Working principle of centrifugal casting

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 to 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.

Read more: Understanding evaporative casting

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!

Leave a Reply

Your email address will not be published. Required fields are marked *