Microwave-hardened moulding sands with inorganic binders for ablation casting

摘要

The technology of casting into sand moulds intensively cooled with water during casting solidification and destroyed when the casting solidification is over is called ablation casting. This is a relatively new technology, not used in Poland so far. Ablation casting is mainly applicable to aluminum alloys cast in disposable moulds. The process uses sand moulds with water-based binders. The liquid alloy is poured into the casting mould, and while it is still in a liquid state, the mould is washed from a certain distance with the jet of a cooling medium (e.g. water). The casting mould is successively subject to destruction, allowing direct contact of water with the casting surface, and thus eliminating the air gap, occurring in practically all other traditional casting methods and hampering the heat flow to the outside [1 -3].