Question

Difference between true centrifugal and semi centrifugal casting

Answer 1

Centrifugal casting, also known as spin casting is typically used for industrial manufacturing of cast parts.

This metal casting technique uses the forces of centripetal acceleration to distribute the molten material in the mold. Molten metal is typically fed into the mold using a spout. The process is then completed using rollers that rotate the mold about its axis causing the liquid metal to form to the mold and harden as the rotation continues. Rotation speeds and pouring rates are specific to the material being used and the design specifications. The true centrifugal casting technique can be performed using both vertical as well as horizontal rotation. The vertical rotation technique is generally used for the smaller parts whereas the longer parts are formed using the horizontal technique.

Semi-centrifugal casting manufacture is a variation of true centrifugal casting. The main difference being that the mold is completely filled during the process through the use of a central sprue. If a central bore is required in the casting, a dry sand core is best suited.

Answer 2

Answer:

Explanation:

The basic difference is that rotation is a vital feature in centrifugal casting, if not emplyed, the casting won't be produced at all, whereas in SCC, we rotate the mould because -

1. Rotation of mould aids in the directional solidification of molten metal.

2. The centrifugal forces push the molten metal into complex parts of the cavity, and 3. The impurities easily get collected near the central core.

The mould would still be able to cast the molten metal, but rotating it only makes a better casting.

There are some other differences, like,

Core is used in SCC, it may/may not be used in CC.

SCC used for more complex shapes, while CC is used mostly used making hollow objects like pipes, tubes and bushes.

SCC uses a vertical axis, whereas tcc may use a horizontal or vertical or inclined axis.