Patent ID: 8136572
Filing Date: 2012-03-20
Classification: B22D,F05B,F05C

Abstract:
1. A method for production of precision castings by centrifugal casting, comprising the following steps: a) providing a centrifugal casting device having a rotor being rotatable around an axis, and at least one crucible being accommodated in the rotor and at least one mold being associated with said crucible and being accommodated in a first radial distance from the axis, b) creating a metal melt within the crucible, the metal melt being a titanium alloy containing Ti and Al as main constituents, c) rotating the rotor and thereby forcing the melt by means of centrifugal forces from the crucible into the mold, d) exerting a pressure on the melt being forced into the mold until the temperature of the solidifying melt has reached a predetermined cooling-temperature in a range of 1300° to 800° C., wherein the pressure corresponds to the centrifugal force acting on the melt as soon as the mold is completely filled times a factor of 1.0 to 5.0, wherein the pressure is increased for a predetermined period after the mold has been completely filled, and e) relieving the pressure when the temperature of the solidifying melt is smaller than said predetermined cooling-temperature.