Mitsubishi Heavy Industries Limited

Tatsuya Ohira

Ikuo Okada

Yukihiko Inoue

Sachio Shimohata

Yuichi Ohtani

Provided is a directional solidification casting apparatus capable of heightening a cooling effect when molten material poured in a mold is directionally solidified. A mold () disposed around a predetermined area is drawn out from a heating chamber () heated above a melting temperature of metals for producing a casting (), and molten metals () held in a cavity () of the mold () are directionally solidified. The directional solidification casting apparatus () comprises a driving rod () by which the mold () is drawn out from the heating chamber (), a gas nozzle () through which a cooling gas is jetted from inside a predetermined area where the mold () is disposed so as to rapidly cool the mold (), and a gas nozzle () through which a cooling gas is jetted from outside the predetermined area where the mold () is disposed so as to rapidly cool the mold (). A baffle () that does not move even when the driving rod () moves up and down is additionally provided. The baffle () blocks radiant heat emitted from the heating chamber ().

Method and apparatus for directionally solidified casting

A computer assisted system predicting adhesion energy at an interface between dissimilar materials, and an associated adhesiveness includes units for inputting given compositions and crystal structure of the dissimilar materials; like-atom and two unlike-atom interatomic interaction energy parameters on the dissimilar materials; and material interface atomic structure model information into a computer. The computer calculates a material interface total energy relative to a distance between surfaces of the dissimilar materials on the basis of the sum of the two like-atom and two unlike-atom interatomic interaction energies and evaluates the adhesion energy from the distribution of the calculated material interface total energy.

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Yokohama, Japan

Tatsuya Ohira