Removing ceramic mould shells from precision cast components.
At one small foundry, ceramic mould shells used to be removed by hand using a lump hammer. This was very time consuming and not particularly effective at removing all of the mould material. Hand hammering operations like this expose workers to high magnitudes of shock vibration.
The company bought a knockout cabinet. This consists of a chipping hammer mounted in a steel frame inside an acoustically treated enclosure. The casting is placed in the cabinet and the chipper will only operate when the door is closed.
Casting inside cabinet before operation begins
Casting inside cabinet after mould removal
Automatic knockout cabinet and operator