[특허]Process for making a wall with a porous element for component cooling

[미국특허] Process for making a wall with a porous element for component cooling 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B21K-025/00
출원번호	US-0050057 (2011-03-17)
등록번호	US-8793871 (2014-08-05)
발명자 / 주소	Morrison, Jay A. Snider, Raymond G. James, Allister W.
출원인 / 주소	Siemens Energy, Inc.
인용정보	피인용 횟수 : 14 인용 특허 : 8

초록 ▼

A structural layer (30) may be bi-cast onto ligaments (62) extending from a porous cooling construction (20). The material of the structural layer may be optimized for high-temperature strength, while the material of the porous construction may be optimized for high thermal conductivity. A fugitive material (56) such as wax may be formed on the ligaments of the porous construction. A second fugitive material (58) such as ceramic may fill the remaining part of the porous construction. An investment casting shell (60) may be disposed around the porous construction and the fugitive materials. The first fugitive material may then be replaced with the material of the structural layer (30), and the second fugitive material may be removed to provide coolant paths (26). A second structural layer (52) may be bi-cast onto further ligaments (62) on a second side of the porous construction.

대표청구항 ▼

1. A manufacturing process, comprising: constituting a first material optimized for structural properties;constituting a second material with a higher thermal conductivity than the first material;forming a porous construction of the second material;bi-casting a first layer of the first material onto a first side of the porous construction, wherein a first portion of the porous construction becomes disposed within the first layer and a second portion of the porous construction remains outside the first layer; andbi-casting a second layer on a second side of the porous construction, wherein ligaments of the porous construction become disposed within the second layer, and the second portion of the porous construction is disposed between the first and second layers. 2. The manufacturing process of claim 1, further comprising constituting the second material to have at least 50% greater thermal conductivity than the first material. 3. The manufacturing process of claim 2, further comprising: constituting the first material to form a Ni-based superalloy;forming a turbine component comprising a wall comprising the first layer; andproviding a coolant flow path through the second portion of the porous construction. 4. The manufacturing process of claim 3, further comprising constituting the second material to have at least twice the thermal conductivity of the first material. 5. The manufacturing process of claim 1, further comprising forming the porous construction as a lattice of intersecting links in a geometry that is engineered and determinate. 6. The manufacturing process of claim 1, further comprising forming film cooling exit holes in the first layer and coolant inlet holes in the second layer. 7. The manufacturing process of claim 1, further comprising forming the second layer of the first material. 8. The manufacturing process of claim 1, further comprising forming the second layer of the second material. 9. A manufacturing process comprising: fabricating a porous construction of a second final material;disposing a first layer of a first fugitive material on ligaments extending from a first side of the porous construction;filling interior voids of the porous construction with a second fugitive material;encasing the porous construction and the fugitive materials in an investment casting shell;removing the first fugitive material, exposing the ligaments of the porous construction;bi-casting a first final material onto the exposed ligaments to form a first structural layer; andremoving the casting shell and the second fugitive material. 10. The manufacturing process of claim 9, further comprising constituting the second final material to have at least 50% greater thermal conductivity than the first final material. 11. The manufacturing process of claim 10, further comprising: disposing a second layer of the first fugitive material on further ligaments extending from a second side of the porous construction;after removing the first fugitive material, bi-casting an additional layer of the second final material onto the further ligaments to form a second structural layer on the second side of the porous construction;forming coolant inlet holes in the second structural layer; andforming film cooling holes in the first structural layer.

이 특허에 인용된 특허 (8) 인용/피인용 타임라인 분석

Appleby,Michael; Fraser,Iain; Atkinson,James E., Devices, methods, and systems involving castings.
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Merrill Gary B. ; Morrison Jay A., High temperature erosion resistant, abradable thermal barrier composite coating.
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Heselhaus, Andreas, High-temperature layered system for dissipating heat and method for producing said system.
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Allister, James, Hybrid single crystal-powder metallurgy turbine component.
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Bolms,Hans Thomas; Heselhaus,Andreas, Layer structure and method for producing such a layer structure.
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Rossmann Axel (Karlsfeld DEX), Method for manufacturing a thermally high-stressed cooled component.
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Hans-Joachim Roesler DE; Alexander Beeck DE; Peter Ernst CH; Reinhard Fried CH, Process for producing a thermally loaded casting.
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Schweitzer Klaus (Niederpoecking DEX), Structural component for use under high thermal load conditions.
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이 특허를 인용한 특허 (14) 인용/피인용 타임라인 분석

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Moricca, Timothy Michael; Rutkowski, Stephen Francis; Moroso, Joseph Leonard; Willett, Jr., Fred Thomas, Method and assembly for forming components having an internal passage defined therein.
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Arnett, Michael Douglas; Moors, Thomas Michael; Peck, Arthur Samuel, Method and assembly for forming components having internal passages using a jacketed core.
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Feldmann, Manfred; Dusel, Karl-Heinz, Sealing arrangement for a turbomachine, a guide vane arrangement, and a turbomachine with such a sealing arrangement.
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[미국특허] Process for making a wall with a porous element for component cooling 원문보기

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[미국특허] Process for making a wall with a porous element for component cooling 원문보기

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