Risers, also known as " feeders ", are the most common way of providing directional solidification.
12.
This may be used to encourage directional solidification of the casting, and thus give useful metallurgical properties to it.
13.
This force distributes the molten metal, promotes directional solidification, and improves casting integrity by forcing impurities to the inside surface.
14.
In order to induce directional solidification risers, insulating sleeves, control of pouring rate, and pouring temperature can be utilized.
15.
Finally, the casting must be designed to produce directional solidification, which sweeps from the extremities of the mold cavity toward the riser ( s ).
16.
An application of dendritic growth in directional solidification is gas turbine engine blades which are used at high temperatures and must handle high stresses along the major axes.
17.
Also, there were some equipment problems with the Automated Directional Solidification Furnace, an experiment to investigate the melting and solidification of various materials in zero-gravity.
18.
It is a critical parameter for purification using zone melting, and determines how effectively an impurity can be removed using directional solidification, described by the Scheil equation.
19.
The suitability of directional solidification in removing a specific impurity from a certain metal depends on the partition coefficient of the impurity in the metal in question, as described by the Scheil equation.
20.
The Advanced Automated Directional Solidification Furnace ( AADSF ) continued to operate smoothly, growing a single cylinder-shaped crystal of mercury cadmium telluride, an exotic material used as an infrared radiation detector.
