One-piece manufacturing process
AssigneeDresser-Rand Company
InventorsKevin Pickrell, Mark J. Kuzdzal
Life of this patent
Estimating the term…
Abstract
A method of making a turbomachine part, wherein the method can include machining a blank into a base having blades extending therefrom, the blades defining a channel therebetween. The method can also include forming a bridge constructed from refractory material in the channel between the blades, and forming a cover on the tops of the blades and over the channel, such that the base, the blades, and the cover form a single substantially homogenous turbomachine part once the bridge is removed.
Claims20
A method for fabricating a turbomachine part, comprising:
- machining a blank into a base having a first appendage and a second appendage extending therefrom, the first appendage and the second appendage defining a channel therebetween;
- filling the channel with a refractory material to form a bridge between a first top of the first appendage and a second top of the second appendage;
- forming a cover on the first top and the second top and over the channel such that the base, the first appendage, the second appendage, and the cover form a single substantially homogenous structure;
- and
- removing the bridge.
A method for fabricating a turbomachine part, comprising:
- machining a blank into a base having a first vane and a second vane extending from the base, the first vane and the second vane defining a channel therebetween;
- forming a bridge across the channel and between the first vane and the second vane;
- preheating the first vane and the second vane to a temperature substantially near a melting temperature thereof;
- and
- forming a cover on the first vane, the second vane, and the bridge using a molten metal, the cover being formed such that the base, the first vane, the second vane, and the cover form a single substantially homogenous structure.
A method for making a turbomachine part, comprising:
- machining a blank into a base having a first vane and a second vane extending therefrom, the first vane and the second vane defining a channel therebetween;
- filling the channel with a refractory material to form a bridge between a first top of the first vane and a second top of the second vane;
- curing the refractory material;
- preheating the first vane and the second vane to a preheating temperature below a melting temperature thereof;
- and
- forming a cover on the first top and the second top and over the bridge with a molten metal, the cover being formed such that the base, the first vane, the second vane, and the cover form a substantially homogenous structure.
Dependencies are inferred from the claim text.