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hydraulic pumps

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270175
EISBN: 978-1-62708-301-0
...Abstract Abstract Several hydraulic pumps that failed in service on a particular type of aircraft were received for analysis. Hydraulic testing was not an option, so the pumps were disassembled and their plungers and cylinders were cleaned and examined. Based on their observations...
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
...Abstract Abstract This chapter discusses the design and operation of hydraulic presses. It begins by describing the role of each major component in a hydraulic system. It then explains the difference between pump-driven and accumulator-driven presses and the types of applications for which...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460227
EISBN: 978-1-62708-285-3
..., the surface of the mounting pad for a hydraulic pump on an externally mounted auxiliary transmission housing is subject to fretting, which occurs when two metal surfaces repeatedly contact each other and degrade through oxidation and mechanical wear ( Ref 9.12 , 9.20 ). The damage creates rough surfaces...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400161
EISBN: 978-1-62708-316-4
...-point die cushions where each individual cushion can be controlled separately to optimize metal flow in the flange, between the die and the blank holder. Fig. 11.29 Schematic of a simple point servo-drive die cushion. Source: Ref 11.5 With the servo motors driving the hydraulic pumps...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250139
EISBN: 978-1-62708-345-4
...; hardened by heat treating FC-0208 or FN-0106 6.4–6.8 Medium high pressure 6.9–8.6 MPa (1000–1250 psi) for short intervals; hardened by heat treating FC-0208 type 6.2–6.5 General-purpose hydraulic pumps up to 10.3 MPa (1500 psi) continuous service FN-0106 type; heat treated 6.8–7.1 General...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030200
EISBN: 978-1-62708-282-2
... use multistage centrifugal pumps placed near the bottom of the well; and hydraulically pumped wells, which use positive-displacement pumps driven hydraulically by oil or water from a surface motor and pump. Most gas wells flow naturally. These include dry gas wells, which produce mainly gaseous...
Series: ASM Technical Books
Publisher: ASM International
Published: 15 June 2021
DOI: 10.31399/asm.tb.mpktmse.t56010001
EISBN: 978-1-62708-384-3
... machines. Another factor that must be considered is that hydraulic machines consist of the frame, controller, and a hydraulic pump, while electromechanical frames consists of only the frame and controller. Fig. 2 Electromechanical universal testing frame Fig. 3 Typical hydraulic 90-kN...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980323
EISBN: 978-1-62708-342-3
... 700 L useful volume Pump power 1920 L/mm Operating cycle of the period 30 s Extrusion time 4 s Return time 6 s Fig. 6.18 Water hydraulic pump system Fig. 6.16 Schematic arrangement of a water hydraulic accumulator drive system for an extrusion press Fig...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870085
EISBN: 978-1-62708-299-0
... of cavitation commonly occurs in hydrofoils, pipelines, hydraulic pumps, and valves. The pressures produced by the collapse can cause localized deformation and/or removal of material (erosion) from the surface of any solid in the vicinity of the cavities. Similarly, when a stationary liquid is subjected...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040115
EISBN: 978-1-62708-300-3
...) Direct drive. [ Riemenschneider et al., 1959 ] Direct-Driven Presses Accumulator-Driven Presses In direct-driven hydraulic presses, the maximum press load is established by the pressure capability of the pumping system and is available throughout the entire press stroke. Thus, hydraulic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.9781627083423
EISBN: 978-1-62708-342-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400203
EISBN: 978-1-62708-316-4
... cylinder is generated by either an accumulator or a pump-driven system. The compensation cylinders are connected to the hydraulic line from the corresponding cushion cylinder, and the pressure required to apply the necessary force is initially generated by additional fluid from the accumulator through...
Series: ASM Technical Books
Publisher: ASM International
Published: 15 June 2021
DOI: 10.31399/asm.tb.mpktmse.9781627083843
EISBN: 978-1-62708-384-3
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720117
EISBN: 978-1-62708-305-8
... or difference. State-of-the-art systems use precision optical encoders mounted directly on preloaded twin ball screws. These types of systems are capable of measuring crosshead displacement to an accuracy of 0.125% or better with a resolution of 0.6 μm. Servohydraulic machines use a hydraulic pump...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500019
EISBN: 978-1-62708-317-1
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030247
EISBN: 978-1-62708-282-2
... oxygen contamination through leaking pump seals, casing and process vents, open hatches, open handling (as in mud pits during drilling, trucking, and so on), and in seawater-injection systems highly likely. Also, failure of oxygen-removal processes (gas stripping and chemical scavenging) is a relatively...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060149
EISBN: 978-1-62708-261-7
... of hydraulic machines is limited to the capacity of the hydraulic pump used to deliver a steady pressure on the piston of the actuator or crosshead. The cross section of a typical gear-driven system is shown in Fig. 7.11 . The screws are rotated by a variable-control motor and drive the moveable crosshead...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630189
EISBN: 978-1-62708-270-9
... of contact stress fatigue. Cavitation pitting fatigue can be a serious problem in marine propellers, diesel-engine cylinder liners, pump impellers, hydraulic pumps and equipment, turbines, torque converters, piping components, and miscellaneous other parts that contact liquids in environments...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410029
EISBN: 978-1-62708-280-8
... casting process include: Simpler designs, such as intake manifolds and other general-purpose castings Farm equipment and bed frames for pump sets and motor housings (with cores for the cooling fins) 4.2 Air Set or No-Bake Molding Process A variety of medium- to large-sized castings...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.9781627083010
EISBN: 978-1-62708-301-0