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hydraulic presses

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001416
EISBN: 978-1-62708-235-8
... Abstract Hydraulic cylinders on three identical presses failed in a similar manner after approximately ten years' service life. The cylinder was a steel casting having a carbon content of the order of 0.3 to 0.4%. During machining of the internal surfaces, a sharp corner had been left...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001413
EISBN: 978-1-62708-223-5
... Abstract The fractured end of a piston rod of a hydraulic press failed in line with the leading face of the piston retaining nut. Although the nut apparently had been seated uniformly, the face was polished, indicating that relative movement between it and the piston had taken place. Failure...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001288
EISBN: 978-1-62708-215-0
... Abstract The side supporting flange of the bottom platen of an 800 ton hydraulic press fractured after 9 x 10's cycles under a maximum load of 530 tons. The platen material specified in the design was cast steel 52. Metallographic examination of the fracture surface indicated that the platen...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0045903
EISBN: 978-1-62708-223-5
... Abstract A 230 mm (9 in.) thick casing, fabricated from ASTM 235-55 low-carbon steel, of a 450 Mg (500 ton) extrusion press failed after 27 years of service. Initial visual examination revealed an area that exhibited multiple origins and classic beach marks radiating out approximately 75 mm (3...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001451
EISBN: 978-1-62708-224-2
... times the specimen thickness at the centre, the wearing surface being on the tension side. The load was applied by means of a hydraulic press. The first strip was tested in the “ as received ” condition and it snapped without any significant prior deformation as soon as an appreciable load was applied...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001724
EISBN: 978-1-62708-234-1
... residual stresses than forging under a hydraulic press while on a mandrel. Rolling is a preferred method — always provided the rolls are capable of exerting a load sufficient for the cold work to penetrate through the full thickness of the end bell, since otherwise the inner and outer surfaces would...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
..., result in erosion of solid surfaces. Affected Systems and Materials Cavity formation and collapse in liquids have been studied extensively over the years ( Ref 5 , 6 ). Machines and components that suffer cavitation damage include hydraulic pumps, valves, hydroturbine runners and guide vanes...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001793
EISBN: 978-1-62708-241-9
... Abstract A controllable pitch propeller (CPP) on a dynamic positioning ship failed after eight months of operation. The CPP design consists of a hollow propeller shaft and a concentrically located pipe that operates inside. The pitch of the propeller blades is controlled hydraulically through...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001477
EISBN: 978-1-62708-229-7
... Abstract During the routine hydraulic pressure test of a boiler following modification, failure by leakage from the drum took place and was traced to a region where extensive multiple cracking had occurred. Catastrophic rupture or fragmentation of the vessel fortunately did not take place...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003569
EISBN: 978-1-62708-180-1
... with a discussion on correlations between laboratory results and service. bearings brittle materials cavitation erosion cavitation resistance cavitation test centrifugal pumps ductile materials gearbox CAVITATION EROSION is a type of wear in hydraulic turbines, on pump impellers, on ship...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006801
EISBN: 978-1-62708-329-4
... be achieved with equipment such as a programmable hydraulic binder, where binder force can be increased near the end of the stroke. Stake beads engage near bottom dead center of the press stroke, with the goal of imparting at least an additional 2% stretch into the sidewall. Springback is reduced...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006837
EISBN: 978-1-62708-329-4
... The bearings were pressed off both journals using a hydraulic bearing puller. The axle identification stampings indicated that the axle was manufactured in August 1992. In addition, the markings indicated that the axle had been normalized and tempered in accordance with AAR grade F axles. The fracture...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006935
EISBN: 978-1-62708-395-9
... Cold press … 40 … + to − 11.0 1.5 High Low (a) SMC, sheet molding compound; HMC, high-strength sheet molding compound; BMC, bulk molding compound; ZMC, Z molding compound Process Effects on Molecular Orientation Polymer molecules in the melt form flow in a non-Newtonian manner...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006814
EISBN: 978-1-62708-329-4
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006834
EISBN: 978-1-62708-329-4
... clearance > group normal For temperature applications where thermal dilatations or differential thermal dilatation may occur, or to be used with strong interference press fits Group 4 Radial clearance > group 3 Group 5 Radial clearance > group 4 Note that the nominal tolerance...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006864
EISBN: 978-1-62708-395-9
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001789
EISBN: 978-1-62708-241-9
... by calculations that indicate that other possible cyclic loads (caused by vibration, resonance, or acoustic waves transmitted through air or hydraulic fluid) would be high enough to cause failure in both ASB and NAB because of their low threshold for fatigue [ 6 ]. Fleet experience shows these failures are absent...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003573
EISBN: 978-1-62708-180-1
... rapid cooling or quenching, excessive warping can usually be reduced by changing the quenching conditions. In many instances, the orientation of a part as it enters the quenchant will influence the amount of distortion that occurs. Quenching in special fixtures (quench presses) is widely used in certain...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
... in special fixtures (quench presses) is widely used in certain industries to minimize distortion by providing different, controlled cooling rates at different locations in a given part. Martempering has also been used to minimize distortion, because transformation rates upon cooling to the M s temperature...