| Sand Casting | Centrifugal Casting |
|---|
| 1) The mould is static and does not rotate during the sand moulding process. | 1) Mould is dynamic and rotates around its own axis forcing metal to the circumference of the mould. |
| 2) As mould does not rotate slag, inclusion, oxides and dirt remain in the casting. | 2) As mould rotates around its own axis slag, inclusions, dirt, oxides and foreign particles accumulate at the centre of the casting components. |
| 3) Sand moulds are made from green sand, dry sand and a combination of both sand to produce mould. | 3) Mould is made from a metal material such as tool steel. |
| 4) Molten metal is poured and flows through passages and a gating system through gravitational force. | 4) Mould is rotated and molten metal is cooled while centrifugal force pushes metal towards the circumference of the dies. |
| 5) Sand casting products produced with sand casting process are not dense compared to centrifugal casting process. | 5) Casting products produced from centrifugal casting process are dense compared to sand casting process. |
| 6) Difficult to produce hollow, denser and longer casting products such as pipes and tubes. | 6) Easy to produce continuous castings such as pipes, tubes, bars and small accurate casting with true centrifugal casting. |
| 7) The cost of manufacturing casting products is low as the tooling cost is lower. | 7) The cost of manufacturing casting is high as the mould is made from metal and needs to be rotated about its own axis. |
| 8) Sand cores are required to produce concentric holes and cavities in the casting parts. | 8) No cores are required for casting components as metal rotates in the mould and due to centrifugal force cavity is produced in the mould. |
