Method of making a turbine engine component

Details Method of making a turbine engine component Method of making a turbine engine component

1989-11-13

1991-01-29

Seidel, Richard K.

Metal founding

Process

Shaping a forming surface

164 35, 164108, 164112, 2988921, B22C 904, B22C 920

Patent

active

049879448

ABSTRACT:
A turbine engine component having an annular array of airfoils disposed between inner and outer shroud rings is made by a method which includes molding bodies of positioning material around central portions of the airfoils. The bodies of positioning material are placed in an annular array. Inner and outer shroud ring pattern dies cooperate with the bodies of positioning material to form inner and outer shroud ring pattern mold cavities. Pattern material is injected into the inner and outer shroud ring pattern mold cavities. The pattern material engages the airfoils, the positioning material, and the shroud ring pattern dies. The pattern material is solidified to form one piece annular inner and outer shroud ring patterns. The shroud ring patterns are covered with a ceramic mold material to form a mold. The inner and outer shroud ring patterns are then removed from the mold to leave shroud ring mold cavities. Different spatial relationships can be obtained between airfoils in one turbine engine component and the airfoils in another turbine engine component by changing the relationship of the airfoils to the bodies of positioning material.

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