Method for producing monocrystalline structures
First Claim
1. A method for producing monocrystalline structures, parts or workpieces of metallic super-alloys on substrates with a monocrystalline structure or monocrystalline structures characterized in that:
- a surface of the substrate is melted with an energy beam of an energy source,a material which is to be introduced into the monocrystalline structure is supplied to the melted region,the material is completely melted, andan energy input is regulated in such a manner that the rate of solidification and the temperature gradient lie in a dentritic crystalline region in the GV diagram and outside a globulitic region.
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Abstract
In the method for manufacturing monocrystalline structures, parts or workpieces of metallic super-alloys on substrates with a monocrystalline structure or monocrystalline structures, the surface of the substrate is melted with an energy beam of high energy density from an energy source. The material which is to be introduced into the monocrystalline structure is supplied to the melted region of the substrate. The supplied material is completely melted. The energy input with the energy beam is regulated and/or controlled in such a manner that the speed of solidification and the temperature gradient lie in the dendritic crystalline region in the GV diagram, outside the globulitic region.
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Citations
12 Claims
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1. A method for producing monocrystalline structures, parts or workpieces of metallic super-alloys on substrates with a monocrystalline structure or monocrystalline structures characterized in that:
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a surface of the substrate is melted with an energy beam of an energy source, a material which is to be introduced into the monocrystalline structure is supplied to the melted region, the material is completely melted, and an energy input is regulated in such a manner that the rate of solidification and the temperature gradient lie in a dentritic crystalline region in the GV diagram and outside a globulitic region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for producing a microcrystalline structure of a metallic super-alloy on a surface of a substrate comprising the steps of:
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melting a region of the surface of the substrate with an energy beam from an energy source; supplying a material to be introduced into the monocrystalline structure to the surface region where the substrate is melted; completely melting the material; and controlling an energy input by the beam to the material so that a rate of solidification and a temperature gradient lie in a dentritic crystalline region in a GV diagram and outside a globulitic region.
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12. A method for supplementing a monocrystalline structure of a worn portion of a monocrystalline turbine blade, the method comprising the steps of:
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melting a region of a surface of the substrate with an energy beam from an energy source; supplying a material to be introduced into the monocrystalline structure to the surface region where the substrate is melted; completely melting the material; and controlling an energy input by the beam to the material so that a rate of solidification and a temperature gradient lie in a dentritic crystalline region in a GV diagram and outside a globulitic region.
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Specification