[특허]Sprayed weld strip for improved weldability

Sprayed weld strip for improved weldability 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B23K-010/02
출원번호	US-0649574 (2007-01-04)
등록번호	US-8618440 (2013-12-31)
발명자 / 주소	Allen, David B. James, Allister W. Hunt, David W.
출원인 / 주소	Siemens Energy, Inc.
인용정보	피인용 횟수 : 0 인용 특허 : 43

초록 ▼

A method for welding to a superalloy material without causing cracking of the material. The method includes the steps of depositing a weld strip (18) of a weldable material onto a superalloy substrate material (12) using a spray deposition process (20) and then forming a weldment (26) to the weld strip. None or a controlled amount of the substrate material (12) is melted during the weld in order to maintain the concentration of strengthening elements in the local melt within a zone of weldability. The spray deposition process may be a thermal process such as HVOF or a cold spray process. A groove (16) may be formed in a surface (10) of the superalloy substrate material to receive the weld strip. A diffusion heat treatment step may be used to improve adhesion between the weld strip and the superalloy material.

대표청구항 ▼

1. A method for joining to a nickel-based superalloy substrate material having a composition outside of a zone of weldability defined as a concentration of strengthening elements wherein a sum of a concentration of aluminum plus one-half a concentration of titanium in the material is less than 3 w/o, the method comprising: applying to the superalloy substrate material a weld strip of a material having a composition within the zone of weldability using a spray deposition process; andforming a fusion weld to the weld strip. 2. The method of claim 1, wherein none of the superalloy substrate material melts during the step of forming a fusion weld. 3. The method of claim 1, further comprising melting a portion of the superalloy substrate material during the step of forming a fusion weld while maintaining local melt conditions within the zone of weldability. 4. The method of claim 1, further comprising performing a diffusion heat treatment to enhance adhesion between the weld strip and the superalloy substrate material prior to the step of forming the fusion weld. 5. The method of claim 1, further comprising applying the weld strip using a thermal spray process. 6. The method of claim 5, further comprising applying the weld strip using a high velocity oxy-fuel spray process. 7. The method of claim 1, further comprising applying the weld strip using a cold spray process. 8. The method of claim 1, further comprising: depositing the weld strip to a thickness in the range of 500-2,000 microns; andforming the fusion weld with a gas tungsten arc welding process. 9. The method of claim 1, further comprising: creating a groove in the superalloy substrate material; anddirecting the spray deposition process to apply the weld strip into the groove. 10. The method of claim 9, further comprising machining the as-deposited weld strip to be flat with a surface of the superalloy material prior to the step of forming the fusion weld. 11. An apparatus comprising: a substrate comprising a superalloy substrate material having a composition outside of a zone of weldability defined as a concentration of strengthening elements wherein a sum of a concentration of aluminum plus one-half a concentration of titanium in the material is less than 3 w/o;a weld strip of a material having a composition within the zone of weldability spray deposited onto the superalloy substrate material; anda fusion weldment formed onto the weld strip. 12. The apparatus of claim 11, wherein the weldment includes none of the superalloy substrate material. 13. The apparatus of claim 11, wherein the weldment includes some of the superalloy substrate material, and a composition of the weldment remains within the zone of weldability. 14. The apparatus of claim 11, further comprising a groove formed in the superalloy substrate material and the weld strip deposited within the groove. 15. The apparatus of claim 11, wherein the superalloy substrate material comprises a gas turbine vane shroud formed of one of Alloy CM247LC and IN939 material, the weld strip comprises IN625 alloy material, and the fusion weldment joins an IN625 impingement plate to the weld strip. 16. The apparatus of claim 11, wherein the weld strip comprises a thickness in the range of 500-2,000 microns.

이 특허에 인용된 특허 (43)

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Lim Leong-Chew (Singapore SGX), Cyclic overageing heat treatment for ductility and weldability improvement of nickel-based superalloys.
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Smashey, Russell W.; Snyder, John H.; Borne, Bruce L., Directionally solidified article with weld repair.
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Flowers Gilbert E. ; Kelly ; Jr. Earl L. ; Grossklaus ; Jr. Warren D. ; Barber James D. ; Grubbs Gray W. ; Williams Levi, Elevated-temperature, plasma-transferred arc welding of nickel-base superalloy articles.
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Brian Harlow Farrell ; Aaron Todd Frost ; James A. Morin ; Thaddeus Jan Strusinski, Gas turbine component refurbishment apparatus and repair method.
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Smolinski John J. (Southington CT) Draghi Peter J. (Simsbury CT) Danielsen John R. (East Hartford CT), Gas turbine engine component repair.
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Alkhimov Anatoly P. (ulitsa Vyazemskogo 2 ; kv. 72 Novosibirsk SUX) Papyrin Anatoly N. (ulitsa Vyazemskogo 2 ; kv. 72 Novosibirsk SUX) Kosarev Vladimir F. (Novosibirsk SUX) Nesterovich Nikolai I. (No, Gas-dynamic spraying method for applying a coating.
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Gibson Robert C. (Ringwood NJ) Korenko Michael K. (Richland WA), High weldability nickel-base superalloy.
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Yasuda Takeshi (Ibaraki JPX) Okayama Akira (Ibaraki JPX) Kobayashi Mitsuru (Ibaraki JPX) Kodama Hideyo (Ibaraki JPX) Suwa Masateru (Ibaraki JPX), Insert material for solid phase diffusion welding for nickel base superalloy and method therefor.
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Goodwater Frank (Reno NV) Huynh Lang D. (Carson City NV) Kang David S. (Carson City NV) Li Hon (Carson City NV) Lizotte James M. (Reno NV) Doyle Brian G. (Gardnerville NV), Interactive laser welding at elevated temperatures of superalloy articles.
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Sudhir Kumar Tewari, Laser repair method for nickel base superalloys with high gamma prime content.
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Foster Michael F. ; Updegrove Kevin J. ; Thurston Christopher A. ; Lovelace Dan L., Laser welding superalloy articles.
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Peterson, Jr., Artie Gene; Gandy, David Wayne; Frederick, Gregory J.; Stover, Jan T.; Viswanathan, Ramaswamy, Method and apparatus for repairing superalloy components.
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Shamblen, Clifford Earl; Woodfield, Andrew Philip; Ott, Eric Allen; Gigliotti, Michael Francis Xavier, Method for preparing metallic superalloy articles having thermophysically melt incompatible alloying elements, without melting.
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Baldi, Alfonso L., Method for refurbishing used jet engine hot section airfoils.
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Arnold James E., Methods for repairing and reclassifying gas turbine engine airfoil parts.
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Hu, Yiping; Hehmann, William F., Multi-laser beam welding high strength superalloys.
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Haydon John S. (Mayfield NY) Beltran Adrian M. (Ballston Spa NY) Wood John H. (Ballston Spa NY), Novel cobalt-base superalloy and cast and welded industrial gas turbine components thereof and method.
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Subramanian,Pazhayannur Ramanathan; Ruud,James Anthony; Cretegny,Laurent, Process for repairing turbine components.
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Everett Mark A. (North Brunswick NJ), Process for welding nickel-based superalloys.
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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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Sprayed weld strip for improved weldability 원문보기

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Sprayed weld strip for improved weldability 원문보기

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