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turbine disk cooling passages

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Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002164
EISBN: 978-1-62708-188-7
..., including turbine blade cooling holes, turbine vane cooling holes, turbine disk cooling passages, oil passages, and fuel nozzles. It describes the limitations and advantages of the STEM process. The article discusses the various tool parts of the STEM system, including the holding fixture, guide...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002157
EISBN: 978-1-62708-188-7
... (0.060 in.) in diameter or orifices as small as 0.15 mm (0.006 in.) to splined die passages 50 mm (2 in.) across or turbine disks nearly 1.2 m (4 ft) in diameter. Abrasive flow machining was initially developed for the critical deburring of aircraft valve bodies and spools ( Fig. 11 ). The method...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003060
EISBN: 978-1-62708-200-6
..., and shutdowns result in transient thermal gradients that can produce severe stresses in the disk of an axial turbine rotor and the back surface of a radial inflow turbine rotor. Present state-of-the-art ceramics have not demonstrated sufficient as-fired surface strength characteristics. Thus, the highly...
Book Chapter

By Samuel M. Purdy
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003750
EISBN: 978-1-62708-177-1
... in macros only and are almost impossible to relate to microstructure. Fig. 15 Transverse section of a turbine disk, stage 3, manufactured from Inconel 718 alloy. Note faint stress chevrons. Etched in 1:1 HCl in water with H 2 O 2 ( Table 2 , etchant 1b). Courtesy of F. Warmuth, Warmuth-Gordon. ∼1...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003120
EISBN: 978-1-62708-199-3
... in cast, rolled, extruded, forged, and powder-processed forms. Sheet, bar, plate, tubing, shafts, airfoils, disks, and pressure vessels (cases) are some of the shapes that have been produced. These metals have been used in aircraft, industrial, and marine gas turbines; nuclear reactors; aircraft skins...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005244
EISBN: 978-1-62708-187-0
... equipment manufacturer. (b) Disk brake rotor and turbine cores and castings. Courtesy of Ashland Chemical Company Both cold- and heat-activated cores are cured in the core box, thus maintaining excellent dimensional accuracy. Cold processes use gases that are forced through the compacted sand mixture...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003430
EISBN: 978-1-62708-195-5
..., to a large degree. For example, Fig. 5 shows two large disk brake assemblies, one using CMC bolts to join CMC disks, the other using bolts and ribs for the same purpose—to provide internal cooling passages in a CMC brake disk. These two components were produced by assembly and joining of a fairly large...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004131
EISBN: 978-1-62708-184-9
... damage penetrating the leading edge (B) right through to the internal cooling passage (A) Turbine blades also often suffer tip oxidation, as protective coatings wear off rapidly due to tip rub. In the case of directionally solidified (DS) blades, tip oxidation may produce thermal fatigue cracking...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003283
EISBN: 978-1-62708-176-4
... Normal load, N Unit load, N/cm 2 Speed, m/s Abrasive area, m 2 Total available path length, m Pin rotation, rpm Robin (13) Pin-on-disk Circular 15 12.4 9.8 1.14 N/A N/A No Khruschov (14) Pin-on-disk Spiral 2 2.9 94 0.5 0.05 45 No Richardson (15) Pin-on-disk Spiral...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005824
EISBN: 978-1-62708-165-8
... characterization using hardening-power and cooling-power tests. The article discusses the fundamentals involved in heat-transfer coefficient and heat flux of quenching processes. This discussion is followed by various actual examples of applications of these methods using simplified equations. Quenchant evaluation...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005293
EISBN: 978-1-62708-187-0
... it was tested on aluminum alloys ( Ref 9 , 10 ), but the first commercial success came about as HIP began to be used to improve the service life of fatigue-critical parts, such as jet engine compressor disks and turbine blades. The levels of improvement were such that, between 1970 and 1975, the HIP...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002160
EISBN: 978-1-62708-188-7
... in the face and out through the center. Fig. 5 Eight applications of electrochemical machining. (a) Bottom contour of a deep hole. (b) Airfoils machined directly on a compressor disk. (c) Finishing a conical hole in a nozzle. (d) Machining a thin-wall casing with embossments. (e) Contouring a turbine...
Series: ASM Handbook
Volume: 4F
Publisher: ASM International
Published: 01 February 2024
DOI: 10.31399/asm.hb.v04F.a0007006
EISBN: 978-1-62708-450-5
... furnaces that must be considered is the residence time of parts within the quench chute. The parts must be cool and below the martensitic transformation temperature when they impact the bottom of the conveyor. If parts still are hot, then other hot parts also can fall on top of these parts, resulting...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006407
EISBN: 978-1-62708-192-4
... or cooling coils with an oil bath system can greatly extend the application temperature of the fluid. Shaft motion can be used to drive a viscous pump for fluid supply, reducing the sensitivity of the system to the fluid level. A disk drags oil from the sump up a housing groove to a scraper blade...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.9781627081719
EISBN: 978-1-62708-171-9
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002457
EISBN: 978-1-62708-194-8
... resist the cooling chemicals and withstand temperatures from 1 to 315 °C (33 to 600 °F). The base threads will be molded in. A major concern with the hygroscopicity of nylon was turned into an advantage as a result of the team's focus on required functions and the materials engineer's previous knowledge...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006429
EISBN: 978-1-62708-192-4
... of fluids, but both are quite different in terms of usage and mechanism. Although fluid machinery also includes blowers, fans, water-turbines, and wind-turbines, these types of machine are not addressed here. This article addresses the friction, lubrication, and wear of components in several types...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002481
EISBN: 978-1-62708-194-8
..., the mold can be in one piece, eliminating parting lines. Draft is reduced to that required for releasing the pattern from its mold. Preheating of ceramic molds allows thin walls and small cores, as in superalloy turbine blades with internal cooling passages. By assembling several pattern pieces, shape...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006392
EISBN: 978-1-62708-192-4
..., clogging of critical passages and contacts by debris, generation of abrasive particles, leaking fluid from enclosures, inefficient operation, and system failure. Classification of Wear One of the simplest classifications of wear is based on the presence or absence of effective lubricants—namely...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0009211
EISBN: 978-1-62708-194-8
...; hybrid additive/subtractive system Powder feed Optomec (LENS 850-R) ( f ) LENS 900 × 1500 × 900 (35 × 60 × 35) 1 or 2 kW IPG fiber laser POM Group DMD (66R) ( f ) DMD 3200° × 3°, 670° × 360° 1–5 kW fiber diode or disk laser Accufusion laser consolidation ( g ) LC 1000 × 1000 × 1000...