摘要：
This disclosure relates to a component formed using an additive manufacturing process. Further disclosed is a method for providing a component for use with a combustion device. In the method, a component formed using an additive manufacturing process is provided. The component is left with a plurality of powder particles only partially fused to an internal passage thereof as a result of the additive manufacturing process. The method further includes removing the partially fused powder particles from the internal passage with a thermal energy process.
权利要求：
CLAIMS
What is claimed is:
1. A method for providing a component for a combustion device, the method comprising:
providing a component formed using an additive manufacturing process, the additive manufacturing process leaving the component with a plurality of powder particles only partially fused to an internal passage thereof; and
removing the partially fused powder particles from the internal passage using a thermal energy process.
2. The method as recited in claim 1 , wherein the partially fused powder particles are at least one of burrs and flash within the internal passage.
3. The method as recited in claim 1, wherein the internal passage is arranged to convey a propellant.
4. The method as recited in claim 3, wherein the component is an injector.
5. The method as recited in claim 4, wherein the propellant includes liquid oxygen.
6. The method as recited in claim 1 , wherein the combustion device is selected from the group consisting of a rocket engine and a coal gasifier.
7. The method as recited in claim 1, wherein the powder particles are alloy particles.
8. The method as recited in claim 1, wherein the removing step includes providing the component in a chamber, pressurizing the chamber with a mixture or oxidizer and fuel, and igniting the contents of the chamber.
9. The method as recited in claim 1, wherein the additive manufacturing process leaves the internal passage with an organic contaminant, and wherein the removing step includes removing the contaminant with the thermal energy process.
10. The method as recited in claim 9, wherein the removed partially fused particles have a height to width ratio of about 2: 1, and wherein the contaminant is reduced to a level of about 1 milligram of nonvolatile residue per square foot of surface area of the internal passage.
11. A method for operating a combustion device, the method comprising: providing a component formed using an additive manufacturing process, the additive manufacturing process leaving the component with asperities on an internal passage thereof, the internal passage having been treated with a thermal energy process to remove the asperities; and
establishing a flow of a propellant through the internal passage that has been treated with the thermal energy process.
12. The method as recited in claim 11, wherein the asperities include at least one of burrs and flash, the asperities including a plurality of powder particles only partially fused to the internal passage.
13. The method as recited in claim 11, wherein the combustion device is selected from the group consisting of a rocket engine and a coal gasifier.
14. The method as recited in claim 13, wherein the propellant includes liquid oxygen.
15. The method as recited in claim 14, wherein the component is an injector.
16. The method as recited in claim 15, wherein the internal passage is configured to direct liquid oxygen throughout the combustion device.
17. A combustion device comprising:
an electron beam formed component having an internal passage, the internal passage configured to route a propellant within the interior of the component, the component treated with a thermal energy process to remove asperities on the internal passage remaining from the electron beam process such that the internal passage is substantially free of the asperities.
18. The combustion device as recited in claim 17, wherein the asperities include at least one of burrs and flash.
19. The combustion device as recited in claim 17, wherein the propellant includes liquid oxygen.
20. The combustion device as recited in claim 17, wherein the component is selected from the group consisting of an injector, a pump, a conduit, and a valve.