[특허]Method and apparatus for surface strengthening of blisk blades

Method and apparatus for surface strengthening of blisk blades 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C21D-007/06
출원번호	US-0007143 (2011-01-14)
등록번호	US-8739589 (2014-06-03)
우선권정보	DE-10 2010 001 287 (2010-01-27)
발명자 / 주소	Hennig, Wolfgang Feldmann, Goetz G.
출원인 / 주소	Rolls-Royce Deutschland Ltd & Co KG
대리인 / 주소	Klima, Timothy J.
인용정보	피인용 횟수 : 0 인용 특허 : 35

초록 ▼

For surface strengthening of blisk blades, a blade area of the blisk is completely inserted into a water bath (13), and a multitude of high-pressure water jets are injected into the water bath which are directed bilaterally and essentially vertically—and opposite to each other—to both blade sides. Cavitation bubbles imploding near the blade surface that are generated in the water bath on the periphery of the high-pressure water jets to produce micro jets upon imploding, exerting an effect on the blade surface, creating plastically formed depressions without sharp edges. An apparatus for performing the method includes a container (3), a jetting unit (6) having parallel spaced apart water-jet tubes (4) with nozzle openings connected to a high-pressure water conduit (5) to produce the high-pressure water jets.

대표청구항 ▼

1. A method for surface strengthening of blisk blades, comprising: providing a container at least partially filled with a liquid to provide a liquid bath for receiving a blisk blade;inserting at least a portion of a blisk blade to be surface strengthened into the liquid bath;providing a jetting unit having a pair of parallel spaced apart liquid jet tubes for positioning on opposite sides of the blisk blade, each connected to a supply of high-pressure liquid, each liquid jet tube having a plurality of nozzle openings equidistantly disposed along a longitudinal direction of the liquid jet tube to produce high-pressure liquid jets penetrating the liquid bath in a direction toward a surface of the blisk blade, the nozzle openings of each of the pair of liquid jet tubes being aligned with and directed toward counterpart nozzle openings on an other of the pair of liquid jet tubes;inserting the jetting unit into the liquid bath with the each of the pair of liquid jet tubes positioned on opposite sides of the surface of the blisk blade and simultaneously injecting the high-pressure liquid jets from the liquid jet tubes into the liquid bath toward the opposite sides of the surface of the blisk blade to generate cavitation bubbles in the liquid bath on a periphery of the high-pressure fluid jets;causing the cavitation bubbles to implode near the surface of the blisk blade to produce micro jets that create plastically formed depressions having rounded edges on the surface of the blisk blade; andproviding a manipulator connected to the jetting unit for positioning each of the liquid jet tubes at an equal spacing from the opposite sides of the surface of the blisk blade, the manipulator controllable to traverse the jetting unit in X, Y and Z-directions and swivel about a vertical axis and a horizontal axis with respect to the blisk blade to cause the high-pressure liquid jets to traverse a curvature of the surface of the blisk blade while maintaining the equal spacing. 2. The method of claim 1, and further comprising positioning and simultaneously directing the high-pressure liquid jets on the opposite sides of the blisk blade toward the blisk blade at an angle essentially normal to an adjacent portion of the surface of the blisk blade. 3. The method of claim 2, wherein the liquid is water. 4. The method of claim 1, and further comprising positioning and simultaneously directing the high-pressure liquid jets on the opposite sides of the blisk blade toward the blisk blade at an oblique angle to an adjacent portion of the surface of the blisk blade. 5. The method of claim 4, wherein the liquid is water. 6. The method of claim 1, wherein the liquid is water. 7. The method of claim 6, and further comprising providing each of the liquid jet tubes has a rectangular cross-section and includes at least one row of nozzle openings. 8. The method of claim 6, and further comprising providing that a length of the plurality of nozzle openings corresponds to a length of a portion of the blisk blade to be strengthened. 9. The method of claim 1, and further comprising providing each of the liquid jet tubes has a rectangular cross-section and includes at least one row of nozzle openings. 10. The method of claim 1, and further comprising providing that a length of the plurality of nozzle openings corresponds to a length of a portion of the blisk blade to be strengthened. 11. The method of claim 2, and further comprising providing each of the liquid jet tubes has a rectangular cross-section and includes at least one row of nozzle openings. 12. The method of claim 2, and further comprising providing that a length of the plurality of nozzle openings corresponds to a length of a portion of the blisk blade to be strengthened. 13. The method of claim 4, and further comprising providing each of the liquid jet tubes has a rectangular cross-section and includes at least one row of nozzle openings. 14. The method of claim 4, and further comprising providing that a length of the plurality of nozzle openings corresponds to a length of a portion of the blisk blade to be strengthened.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Method and apparatus for surface strengthening of blisk blades 원문보기

초록 ▼

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Method and apparatus for surface strengthening of blisk blades 원문보기

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연구과제 타임라인

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이 특허에 인용된 특허 (35)

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