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Piston rods

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001408
EISBN: 978-1-62708-220-4
... Abstract Initially, two vertical double-acting two-stage compressors delivering chlorine gas at a pressure of 100 psi appeared to be running satisfactorily. About six months later the LP piston-rod of the No. 2 compressor failed due to burning, the compressor being worked double-acting at the...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001154
EISBN: 978-1-62708-223-5
... Abstract The cause of fracture of two piston rods of hammers of a drop forge was determined. The first rod of 180 mm diam consisted of an unalloyed steel with 0.37% C and 0.67% Mn and had a strength of 56 kp/sq mm at 26% elongation. Fatigue fractures propagated from several points which could...
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
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001556
EISBN: 978-1-62708-218-1
... Abstract A few Cr-Mo steel piston rods from different production batches were found identically cracked in the eye end near the radius after chrome plating and baking treatment. Two of them cracked in the plating stage itself instantly broke on slight tapping. Cracking initiated from the outer...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001156
EISBN: 978-1-62708-218-1
... Abstract The piston rod of a steering damper on a single decker bus fractured after 100,000 miles of service in the fully-extended left full-lock position. The steering damper, which is similar in shape and operation to a telescopic shock absorber, was secured by ball joints locked with slotted...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
... Abstract This article discusses failures in shafts such as connecting rods, which translate rotary motion to linear motion, and in piston rods, which translate the action of fluid power to linear motion. It describes the process of examining a failed shaft to guide the direction of failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001582
EISBN: 978-1-62708-233-4
... the rod broke by overload. Changing the tolerance on the threads virtually eliminated the fatigue problem. Threaded fasteners Tolerance 4140 UNS G41400 Fatigue fracture Cylinder clamping rods, Fig. 1 , are used or clamping the cylinder block to the piston assembly in a...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0089657
EISBN: 978-1-62708-233-4
... Abstract The gun mount used in two types of self-propelled artillery consists of an oil-filled recoil cylinder and a sand-cast (MIL-I-11466, grade D7003) ductile-iron piston that connects to the gun tube through a threaded rod. The piston contains several orifices through which oil is forced as...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047835
EISBN: 978-1-62708-217-4
... piston-pin-bushing bore. The fracture was nucleated at an electroetched numeral 5 on one of the flange surfaces. A notch, caused by arc erosion during electroetching, was revealed by metallographic examination of a polished-and-etched section through the fracture origin. A remelted zone and a layer of...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001434
EISBN: 978-1-62708-236-5
..., necessitated replacement of the complete upper portion of the crankcase and cylinder block, together with the liner and piston of the affected cylinder. The top end of the fractured rod is shown in Figure 1 , from which it will be seen that failure took place in line with the lower edge of a deposit of weld...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001138
EISBN: 978-1-62708-231-0
... within the cylinder, the wheel/ axle set was in a down position, and the vehicle was able to move on the rails, Fig. 3 . When on rail wheels the inside truck tire on the rear axle would be sitting on the rail and would be the driving force for the vehicle, Fig. 2 . Fig. 3 Piston Cylinder...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001232
EISBN: 978-1-62708-233-4
... valve spring, origin of fracture marked by arrow. 10× Fig. 6 Broken cabin bolt from an elevator. 1× Fig. 7 Broken cam of a rolling mill clutch with many vibrational fractures originating from a key-groove, Approx 1 2 × Fig. 8 a). Broken piston rod of a steam...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001476
EISBN: 978-1-62708-229-7
... piston rings and valves carefully examined. All were found to be in a good condition and no evidence of excessive oil-pumping was apparent. The oil used was of the normal grade for air compressor service, having a closed flash point of 448°F. Subsequent enquiries brought to light information that...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001597
EISBN: 978-1-62708-236-5
... region near the neutral bending axis of pin #2 and produced a woody fracture plane perpendicular to the direction of imposed piston loading. This woody fracture existed prior to machining and induction hardening. The woody fracture location, orientation, and size is similar in both crankshafts. The...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006794
EISBN: 978-1-62708-295-2
... solid surface caused by fracture arising from material fatigue in a corrosive environment. This wear mode is also termed tribocorrosion fatigue ( Ref 8 , 9 ). Components in machinery, such as cylinder piston rods and slide bearings, and facilities used in an offshore corrosive environment can suffer...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
... also be built around the conveyor. A machine that cut chamfer on wrist pin holes on piston rods for automotive engines produced a loud, high-pitch sound during the backside chamfer operation. Examination of the rods showed that the surface that was machined was very rough and completely unacceptable...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001459
EISBN: 978-1-62708-234-1
... consistent with the heavy loading conditions. Percussion loading sometimes gives rise to a system of fatigue cracks that are often indistinguishable from those due to tensile loading or bending. Fig. 12 depicts the fracture surface of the piston rod of a pneumatic hammer, the third to fail similarly in...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003560
EISBN: 978-1-62708-180-1
.... The terms scuffing and scoring are also used to describe similar surface damage under lubricated conditions. Scuffing is the preferred term when the damage occurs at lubricated surfaces, such as the piston ring-cylinder wall contact. Scoring typically describes damage that takes the form of...
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
... surfaces, such as the piston ring virgule cylinder wall contact. Scoring typically describes damage that takes the form of relatively long grooves. Severe galling can result in seizure of the metal surfaces. Materials that have limited ductility are less prone to galling, because under high loads...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003510
EISBN: 978-1-62708-180-1
... scanning of several pistons together on a single bar ( Ref 29 ). For heat treating problems related to furnace design and operation, it is usually suggested that ( Ref 28 ): The vestibules of atmosphere-hardening furnaces should be loaded and unloaded with purging. Load transfer for belt and...