[특허]Dual-alloy disk system

Dual-alloy disk system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B23K-020/02 B23P-015/04 B21K-001/28 B21K-003/00
출원번호	US-0225907 (1988-07-29)
발명자 / 주소	Hyzak John M. (Shrewsbury MA) Howson Timothy E. (Westboro MA) Couts Jr. Wilford H. (Northboro MA) Reichman Steven H. (Worcester MA) Delgado Hugo E. (Arlington MA) Kruger Daniel D. (Cincinnati OH) S
출원인 / 주소	Wyman-Gordon Company (Worcester MA 02)
인용정보	피인용 횟수 : 28 인용 특허 : 0

초록 ▼

Two pieces of metal are bonded together at a surface by placing the two pieces into contact at the surface and forging the two pieces in a die which causes substantial displacement of the metal originally at the surface in a direction parallel to and outwardly from the edges of the surface. In this way, many of the defects which are potentially present at the original surface are displaced with moving metal away from the original contact between the two pieces of metal into sacrificial ribs and the remaining defects are exposed to significant strain. A portion of the displaced metal which contains many of the defects and which forms the sacrificial ribs is removed from the resulting bonded work piece as the sacrificial ribs are removed from the work piece. The result is a bond with superior properties and with a bond surface which can be located very precisely. This system is particularly appropriate for forming dual-alloy high-pressure turbine disks for gas turbines in which an annular peripheral ring of a second super-alloy is bonded to a central core of a first super-alloy. The system is particularly effective if, prior to forging, surfaces to be bonded are closely shape-conforming, are very clean, and are diffusion-bonded using hot isostatic pressing while the surfaces are gas-free. The sacrificial ribs are formed by vents in the impression of the forging dies. The vents are adjacent to the outer edges of the bond surface. The system may be accomplished by using one or more strikes of the same dies, or may include multiple strikes in which only one side of the bond is vented during each strike.

대표청구항 ▼

A method of forming a disk having a disk axis, a first disk face and a second disk face and an annular outer edge which defines the outermost extent of the workpiece, the disk having a central portion formed of a first alloy and an annular peripheral portion formed of a second alloy, and the boundary between the central and peripheral portion being a surface of revolution about the disk axis and being defined by a generatrix having a first end and a second end, a line between the first end and the second end forming a bondline, said surface having a first circular edge at the first face of the disk and generated by the first end of the generatrix, and a second circular edge at the second face of the disk and generated by the second end of the generatrix, and the disk also comprising material initially present at the boundary, comprising the steps of: (a) placing the disk between a first die having a first die face and a second die having a second die face at least one of said dies having an annular vent formed in its die face, said vent having two concentric vent edges at the die face and said vent having a cross-sectional profile in a plane radial to the disk axis and a height line which is a line representing the distance between a base line on the cross-sectional profile and which connects the vent edges, and a point on the cross-sectional profile and on the vent farthest from the base line, (b) causing the dies to approach one another along a forging axis which is parallel to the disk axis so that the vent edges straddle a circular line on a face of the disk, said circular line being the desired location of one of the circular edges of the surface, and thereby to cause some of the first alloy and some of the second alloy, along with a substantial amount of the material that was present at the boundary, to flow into the vent along a line of movement substantially parallel to the forging axis to form a rib in the vent, and (c) removing the rib from the disk.

이 특허를 인용한 특허 (28)

Blumer, Eric; Jan, David K.; Smoke, Jason; Adams, Robbie Joseph; Kington, Harry Lester, Bladed gas turbine engine rotors having deposited transition rings and methods for the manufacture thereof.
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Wessman, Andrew Ezekiel; Mourer, David Paul, Components and processes of producing components with regions having different grain structures.
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Wessman, Andrew Ezekiel; Mourer, David Paul; Wei, Daniel Yeuching, Components and processes of producing components with regions having different grain structures.
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Smoke, Jason; Jan, David K.; Mittendorf, Don; Ludwig, Brent; Miner, Amandine; Chase, Deanna Pinar, Dual alloy bladed rotors suitable for usage in gas turbine engines and methods for the manufacture thereof.
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Day, Christophe Jude; Ehresman, Mark Douglas; Allen, Jr., Clifford Edward; Gleason, Mark Joseph; Gambone, Michael Joseph, Extraction of chordal test specimens from forgings.
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Rabinovich, Albert; Palitsch, John Richard; Rovinski, Vincent Joseph, Forge press, die and tooling design with distributed loading.
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Dierksmeier Douglas D. (Columbus IN) Heffernan Tab M. (Indianapolis IN), High temperature rotor blade attachment.
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Dierksmeier Douglas D. ; Heffernan Tab M., High temperature rotor blade attachment.
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Dierksmeier Douglas D. ; Heffernan Tab M., High temperature rotor blade attachment.
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Katsumi Watanabe JP, Highly gas tight substrate holder and method of manufacturing the same.
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Krotzer, Jr., W. Samuel; Greenberg, Michael D.; Schlichting, Kevin W., Hybrid gas turbine bearing support.
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Chavdar, Bulent, Method for manufacturing a forging.
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Chavdar, Bulent; Killian, Michael; Nshimiye, Eric; Stoltz, Thomas, Method for manufacturing a gear.
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Batzinger, Thomas James; Gigliotti, Jr., Michael Francis Xavier; Bewlay, Bernard Patrick; Srivatsa, Shesh Krishna, Method for positioning defects in metal billets.
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Robertson, John M.; DeMichael, Thomas; Walker, Raymond M., Method of joining material.
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Rice, Derek Anthony, Method of manufacture of a dual alloy impeller.
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Seth,Brij, Method of manufacturing a rotating apparatus disk.
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Clark, Brynley, Method of manufacturing a rotor disc.
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Tohill Henry J. (Chula Vista CA) Gallagher Russell B. (Painesville OH) Kubarych Kenneth G. (Delmar CA) Hallstrom Nils O. (San Diego CA), Method of manufacturing an impeller assembly.
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Wang, Aiguo; Lawrynowicz, Daniel E.; Zeng, Haitong; Murray, Naomi; Prabhu, Balaji, Methods for manufacturing porous orthopaedic implants.
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Singh, Surendra; Vensel, Frederick William; Jauriqui, Leanne, Methods for non-destructively evaluating a joined component.
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Wines, Daniel Edward; Ketterer, Randy Joseph; Link, Barbara Ann; Pezzutti, Mark Dean; Carrier, Charles William; Dyer, Terrence Owen; Menzies, Richard Gordon; Lammas, Andrew John, Rotary machine components and methods of fabricating such components.
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Seth, Brij, Rotating apparatus disk.
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Carrier, Charles W.; Chou, Chen-yu J., System for manufacturing a rotor having an MMC ring component and a unitary airfoil component.
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Carrier, Charles W.; Chou, Chen-yu J., System for manufacturing a rotor having an MMC ring component and a unitary airfoil component.
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Konitzer, Douglas Gerard; Huron, Eric Scott; Mourer, David Paul; Girvin, Brian James; Culbertson, Glenn Charles; Wines, Daniel Edward; Noe, Daniel David, Welding process and component formed thereby.
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Tolbert, Ronald Gene; Huron, Eric Scott; Mourer, David Paul; Konitzer, Douglas Gerard, Welding process and component produced therefrom.
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