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turbine disk cooling passages

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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
... quantities. Fig. 3 Cores and corresponding castings produced by the cold box process. (a) Large transmission case and resulting gray iron casting for an agricultural equipment manufacturer. (b) Disk brake rotor and turbine cores and castings. Courtesy of Ashland Chemical Company Both cold- and...
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...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003060
EISBN: 978-1-62708-200-6
... the use of materials such as silicon nitride and silicon carbide for blades and vanes. Cold starts, accelerations, decelerations, 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...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003120
EISBN: 978-1-62708-199-3
... Powder techniques are being used extensively in superalloy production. Principally, high-strength gas turbine disk alloy compositions such as IN 100 or René 95, which are difficult or impractical to forge by conventional methods, have been powder processed. Inert atmospheres are used in the production of...
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
...-1960s when 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...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001303
EISBN: 978-1-62708-170-2
... solidification, a portion of this carbon separates from the melt as either iron carbide or graphite. The form that the excess carbon takes is determined by the rate of cooling. If the cooling is rapid, the carbon will solidify as iron carbide. If the cooling is slow, the carbon will solidify as graphite. The...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... resists oxidation. For very high production runs, tool steels or low-carbon steel tools may be used. The molds often contain internal cooling passages through which water flows to remove heat from the die, and the dies are usually coated with a ceramic slurry between pours. Because metal molds extract...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003091
EISBN: 978-1-62708-199-3
... COREX (or KR) process for smelting reduction conducts the blast furnace functions of preheating and gaseous reduction and smelting in two separate reactors ( Fig. 3 ). Essentially, the process comprises a two-stage operation in which DRI from a shaft furnace is charged without cooling into a connected...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003104
EISBN: 978-1-62708-199-3
... either directly or indirectly to a surface. Wear can result in alteration of critical dimensions, increased vibration, fatigue damage, clogging of critical passages and contacts by debris, generation of abrasive particles, leaking fluid from enclosures, inefficient operation, and system failure...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001304
EISBN: 978-1-62708-170-2
... ferrite structure on cooling Pearlite-reduced steels , strengthened by very fine-grain ferrite and precipitation hardening but with low carbon content and therefore little or no pearlite in the microstructure Microalloyed steels , with very small additions (generally <0.10% each) of such...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005186
EISBN: 978-1-62708-187-0
... infrastructure and structural components, water distribution systems (pipes, pumps, and valves), automotive components (engine blocks, brakes, steering and suspension components, etc.), prosthetics, jewelry, and gas turbine engine hardware. In one study ( Ref 1 ), castings were estimated to be used in 90% or...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003005
EISBN: 978-1-62708-200-6
... developed to economically produce more sound and accurate components. Ashby ( Ref 2 ) has classified the different manufacturing processes into the nine categories shown in Fig. 1 : Casting involves pouring a liquid into a mold where it solidifies by cooling (metals) or by reaction (thermosetting...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... mitigating options and to specify appropriate corrective actions. Consider the example of a butterfly valve that fails in service in a cooling water system at a manufacturing facility ( Table 1 ). Recognizing the indicators, causes, mechanisms, and consequences helps to focus investigative actions...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006470
EISBN: 978-1-62708-190-0
... ultrasonically inspected for the presence of flaws are: Mill components: Rolls, shafts, drives, and press columns Power equipment: Turbine forgings, generator rotors, pressure piping, weldments, pressure vessels, nuclear fuel elements, and other reactor components Jet engine parts: Turbine and...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001264
EISBN: 978-1-62708-170-2
..., where the solution must be pumped through internal passages or holes in a part. The drive mechanism should allow the barrel to rotate, both in the processing tanks and in transfer stages, to ensure free rinsing and minimize dragout. To allow adequate solution transfer in and out of the barrel, the hole...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... the consequence of such defects. Specimens for mechanical testing were obtained by slicing a 580 mm (23 in.) diameter shaft forging into 75 mm (3 in.) thick disks. Tensile specimens and Charpy impact specimens were located at various radial distances from the center of the shaft cross section...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006456
EISBN: 978-1-62708-190-0
... small, complex precision castings and forgings, especially turbine blades and vanes used in aircraft engines and liquid propellant rocket motor pumps. The ability to localize material flaws and passage dimensions has also permitted the reworking of complex castings and fabrications. In the aircraft...