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Piston rods

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Published: 01 December 2003
Fig. 12 Examples of oxynitrided piston rods. Center rod: before treatment. Two rods at left: untreated and subjected to salt spray testing. Two rods at right: treated, then subjected to salt spray testing. Material is similar to UNS G41400 and H41400 chromium-molybdenum steels. Courtesy of Plateg More
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Published: 01 October 2011
Fig. 16.24 Fatigue failure surface from a piston rod. The fatigue crack initiated near a forging flake at the center and propagated slowly outward. The outer area is the region of final brittle fracture overload. Source: Ref 16.5 More
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Published: 01 September 2008
Fig. 16 As-received main landing gear linear actuating piston rod cylinder More
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Published: 01 August 2005
Fig. 10 An example of a large piston rod fracture from a forging hammer. The fracture originated at the surface due to severe friction during contact with the interior of the hole in the upper die block. (a) In addition to the main fracture there are many fatigue cracks in the darker areas. (b More
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Published: 01 August 2012
Fig. 13.10 Components of the hydraulic cushion system: 1, ram; 2, ejector; 3, upper die; 4, punch; 5, blank holder; 6, pressure pins in die; 7, pressure pins in drawing cushion; 8, pressure box; 9, lifting piston rod; 10, die cushion guide; 11, displacement piston; 12, overflow tank; 13 More
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Published: 01 September 2008
Fig. 17 Appearance of longitudinal crack in the main landing gear linear actuating piston rod cylinder More
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Published: 01 October 2012
Fig. 9.28 Jet engine applications of titanium-matrix composites. (a) A nozzle actuator piston rod used on the Pratt & Whitney F119 engine for F-22 aircraft. The part is made of a Ti-6Al-2Sn-4Zr-2Mo alloy reinforced with SiC monofilaments that are 129 μm (5.1 mils) in diameter. The inset shows More
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Published: 30 November 2013
Fig. 33 Tensile fatigue fracture starting near the center of an 8-in.-diam piston rod of a forging hammer, made of low-carbon alloy steel hardened to 24 HRC at the surface and 17 HRC at the center. In an axially loaded part such as this, fatigue fracture can start anywhere in the cross section More
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Published: 01 August 2005
Fig. 3.14 Two views of the surface of a fatigue fracture in a 145 mm (5¾ in.) diam threaded piston rod of heat-treated AISI 4340 steel (341 HB hardness). Beyond the zone of fatigue crack growth, failure was by radial fibrous fast fracture. (a) The full-face view [unreadable] clearly shows beach More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
... surface rather than the drawing requirement of electrolytic nickel. The manufacturing sequences for the MLG linear actuating piston rod cylinder were: A 300M steel bar was machined to the required outside diameter and was then bored, honed, and nickel plated. The bar was swaged in an approximate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400203
EISBN: 978-1-62708-316-4
... the motion of the blank holder during the forward stroke. The return motion of the pressure box is controlled by the lifting piston rod (9), which slides inside the lifting cylinder, while the displacement cylinder passively follows the pressure box during the return stroke. The lifting piston rod has...
Image
Published: 01 August 2012
Fig. 7.6 Setup for strip reduction. A, strip; B, hardened steel rod; C, pressing block; D, distance sheet; E, vertical piston; F, horizontal piston with claw; G, tools. Source: Ref 7.12 More
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Published: 01 December 2004
Fig. 3.12 Examples of castings produced by the vacuum riserless casting (VRC) process include rocker arms, compressor pistons, connecting rods, trowel handles, valve components, and other parts More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270005
EISBN: 978-1-62708-301-0
... got pulverized. The connecting rod had worked its way outward, breaking the cylinder liner and the engine block. Figure 2.17 shows the broken piston head. Presence of beach marks on the fracture surface ( Fig. 2.18 ) and striations revealed by electron fractography confirmed that the piston had...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900071
EISBN: 978-1-62708-350-8
.... Fig. 11 Schematic illustration of the oxynitriding process Figure 12 shows a plain carbon-manganese steel piston rod that has been nitrided, followed by the controlled oxynitride procedure. The center rod shows the rod before the start of treatment. The two rods at the right have been...
Book Chapter

By Eren Billur
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400181
EISBN: 978-1-62708-316-4
... ) are common. They are named differential because the functional (pressurized) area of the piston is not equal when the rod is extending and retracting. As a result, the rod can generate more force when extending but moves slower than when it is retracting (see Eq 12.1 and 12.2 ). In some applications...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.9781627083010
EISBN: 978-1-62708-301-0
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550457
EISBN: 978-1-62708-307-2
... actuator piston rods for the Pratt and Whitney F119 engine in the F-22 aircraft. Specific strength and specific stiffness, along with good fatigue response at a maximum operating temperature of 450 °C (850 °F), are the requirements. The hollow TMC rod replaced a solid rod of precipitation-hardened...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980001
EISBN: 978-1-62708-342-3
... forced from a melting vessel A by the piston B through a valve into the cylinder. The liquid material is then pushed by the piston as split metal streams through annularly located openings in the mandrel support so that the metal streams combine and solidify in the annular gap formed by the tube mandrel...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870001
EISBN: 978-1-62708-299-0
.... It can be rolled to any desired thickness down to foil thinner than paper; aluminum sheet can be stamped, drawn, spun or roll-formed. The metal also can be hammered or forged. Aluminum wire, drawn from rolled rod, may be stranded into cable or any desired size and type. There is almost no limit...