High thermal gradient casting with tight packing of...

Details High thermal gradient casting with tight packing of... High thermal gradient casting with tight packing of...

B - Operations, Transporting

22

D

B22D 27/04 (2006.01) B22C 9/04 (2006.01) C30B 11/00 (2006.01) C30B 29/52 (2006.01)

Patent

CA 2724387

Method for forming directionally solidified articles in tightly packed mold cavities withdrawn into liquid metal cooling bath. The withdrawal rate and the spacing between adjacent mold cavities cooperate to provide a high thermal gradient. The cast articles exhibit primary dendrite arm spacing of between about 6 to about 12 mils (about 150 -300 microns).

L'invention porte sur un procédé de formation d'articles à solidification directionnelle dans des empreintes de moule à tassement serré, envoyés après démoulage dans un bain de refroidissement du métal liquide. La vitesse de démoulage et l'espacement entre des empreintes de moule voisines coopèrent pour donner un gradient thermique élevé. Les articles coulés présentent un espacement des bras dendritiques primaires compris entre environ 6 et environ 12 mils (environ 150 à 300 micromètres).

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