Moulds For Other Casting Processes:
Centrifugal Casting
Expandable and permanent moulds both are utilized for centrifugal casting.
Expandable Moulds Materials
Expandable moulds might be of green sand, dry sand, CO2 etc. Expandable moulds are suggested while chilling tendency is to be taken care of.
Generally Green sand is utilized in expandable moulds. It needs special bonding material to impart strength. Generally Special cause resins and phenolic binders are utilized as binders.
Dry sand moulds hardened along CO2 are also utilized sometimes. Mould washes are utilized with expandable moulds to prevent erosion of the mould through molten metal.