Details of cooling operation during lost wax casting
The range of use for Lost wax casting is increasing, and more and more processing techniques are used. The cooling process is an essential process. Some of them need to experience the solid phase transition of the alloy. Carbon steel changes in volume from the δ phase to the γ phase, and the volume increases when the eutectic changes to the γ phase. However, if the temperature of each part of the casting is common, minute stress does not occur during the solid phase transition, and only minute stress may occur. If the phase transition temperature is higher than the critical temperature of plastic elastic change, the alloy will be in a plastic state during the phase transition. Even if there is temperature in each part of the casting, the phase transition stress is not large and gradually decreases or disappears. If the phase transition temperature of the casting is lower than the critical temperature, the temperature difference of each part of the casting is large,...
