Explanation

The process of progressive solidification of molten metal or alloy along a fixed direction through proper mold design and foundry process control. The condition is to ensure that the heat flow only propagates in the opposite direction of the solidification interface. Single crystal, double crystal or multi crystal with obvious texture can be produced by directional solidification. For alloy prone to segregation, castings without segregation can also be obtained. Because the columnar structure produced by directional solidification is dense and anisotropic, the castings can have high mechanical properties along the crystallization direction. Directional condensation is often used to make high-performance blades.

Classification