Mechanical Engineering - Workshop Technology - Discussion

The correct answer is a symmetrical shape with a vertical axis.

Centrifugal casting is a method that uses centrifugal force to cast symmetrical articles about a vertical axis. This process involves pouring molten metal into a rotating mould, which is typically spinning around a vertical axis. The centrifugal force pushes the metal against the mould walls, creating a dense and uniform casting.

Here's why the other options are incorrect:

- Symmetrical shape about a horizontal axis: While centrifugal casting can be used for horizontal axis symmetry, it's not the most common or ideal orientation.
- Irregular shape: Centrifugal casting is not suitable for casting irregular shapes, as the centrifugal force requires symmetry to work effectively.
- Non-ferrous metal only: Centrifugal casting can be used for both ferrous and non-ferrous metals, including alloys.

Centrifugal casting is commonly used for producing:

- Pipe fittings
- Cylinder liners
- Bearing sleeves
- Gear blanks
- Other symmetrical parts

The benefits of centrifugal casting include:

- High density and uniformity
- Good surface finish
- Reduced porosity
- Improved mechanical properties

When we talk about centrifugal casting, it can be rotated about any central axis, but in case semi centrifugal casting axis should be vertical.

Casting machines may be either horizontal or vertical axis. Horizontal axis machines are preferred for long, thin cylinders, vertical machines for rings.

Vertical centrifugal casting requires 1500 times gravitational force. It's not affordable so we can't use.

Centrifugal casting is 3 types.

True centrifugal.
Semi centrifugal.
Centrifuged casting.

It is used for symmetrical shape about both vertical as well as the horizontal axis.

To be accomodate gravity force we have use horizontal axis in centrifugal casting.

@Pandey ji, Gravity force will be equal in vertical axis shapes not in horizontal.

Horizontal axis is used for long, thin cylinders and vertical axis for rings.

Because gravity force is applied in same to in the direction of horizontal.

Axis, so the material is distributed are equal in all direction. So option [B] is right.