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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
... to the lower tubeplate on the opposite side. After a mishap, the paint had been burned off the upper half of the shell. Internally, most of the tubes were found to be twisted or bent. The casing of the pump used to circulate the cooling water was also found to be cracked after the mishap. All the evidence...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001087
EISBN: 978-1-62708-214-3
... × 2.5 in.) Galiger pump with a split cast iron case and open rotor (impeller). The case was lined with a two-piece removable natural rubber liner. The ductile iron rotor core was covered by cast natural rubber, forming a one-piece integral unit. The pump used a John Crane packing seal without flush...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047793
EISBN: 978-1-62708-217-4
...Abstract Abstract Failure of a case hardened steel shaft incorporated fuel pump in a turbine-powered aircraft resulted in damage to the aircraft. The disassembled pump was found to be dry and free of any contamination. Damage was exhibited on the pressure side of each spline tooth...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001779
EISBN: 978-1-62708-241-9
... were the dominant failure mechanisms and that the materials and processes used to make the pumps were largely unsuited for the application. pump casing cavitation wear erosion steel shrinkage pits and voids scanning electron microscopy cavitation resistance C30 (low-carbon steel alloy...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001202
EISBN: 978-1-62708-234-1
...Abstract Abstract Two damaged impellers made of austenitic cast iron came from a rotary pump used for pumping brine mixed with drifting sand. On one of the impellers, pieces were broken out of the back wall in four places at the junction to the blades. The fracture edges followed the shape...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001370
EISBN: 978-1-62708-215-0
.... Recommendations included use of a case-hardened En 8 steel with the correct composition and regular maintenance of the pump. Cooling systems Nuclear reactors Shafts (power) Water cooling EN8 Fatigue fracture Corrosion fatigue Background Visual Examination of General Physical Features Testing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001592
EISBN: 978-1-62708-228-0
...Abstract Abstract Sucker-rod pumps are operating in very aggressive environments in oil well production. The combined effect of a corrosive environment and significant mechanical loads contribute to frequent cases of failure of the rod string during operation. Standards and recommendations have...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001189
EISBN: 978-1-62708-218-1
... or case hardening would have been better under these circumstances. Fuel injection pumps Gears Pitting (wear) C45 Rolling-contact wear Two fuel injection pump gears that were nitrided in a cyanide bath were submitted by the engine manufacturer for examination of hardness distribution...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001688
EISBN: 978-1-62708-234-1
...Abstract Abstract Some examples of equipment failures involving high temperature operation are presented. They include some steam generator superheater components and a pump shaft that should not have been at high temperature. Metallographic analysis is used to determine the causes of failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047453
EISBN: 978-1-62708-235-8
...Abstract Abstract The origins of the casting are unknown. It is included here as a classic case of intergranular corrosion. The part (apparently a pump outlet) was named the “rubber casting” because of the severity of the intergranular attack. Every grain boundary has been attacked...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001163
EISBN: 978-1-62708-234-1
... region of bolt in X10 CrNiTi 18 9 that failed by stress corrosion cracking. 8 × Fig. 8 Unetched micro-section of a cracked pump casing of austenitic spheroidal graphite cast iron. 100 × Fig. 9 Scanning electron micrograph of a fracture face from the bolt in Fig. 7 . 400 × Fig...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046414
EISBN: 978-1-62708-234-1
... contained in a cast iron pump casing. Investigation Conclusions Corrective Measures References References 1. Knapp R.T. , Daily J.W. , and Hammitt F.G. , Cavitation , McGraw-Hill , 1970 2. Hammitt F.G. , Cavitation and Multiphase Flow Phenomena , McGraw...
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
... , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 2002 , p 559 – 586 10.31399/asm.hb.v11.a0003537 Part I—Special Cases Part II—Turbines, Pumps, and Compressors Part III—Fans and Motors Case #1: Vibration in Hydroelectric Dam Case #2: Vibration of Steel...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001809
EISBN: 978-1-62708-241-9
... is a split case, double suction, with equal suction on each side. Pump suction rises from the floor, through a suction strainer, and then flows horizontally to each side of the pump. One suction eye contained more damage than the other. The pump casing was cast iron and the impeller was cast nickel–aluminum...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001828
EISBN: 978-1-62708-241-9
... under thermal loads. The pump discharge pipes themselves are provided with a horseshoe clamp with predetermined clearance for thermal expansion of the pump casing under operating temperature. Seismic Restraints Each HT pump motor is provided with three seismic pads on the motor frame and three...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001082
EISBN: 978-1-62708-214-3
.... , Ed., Van Nostrand Reinhold , 1991 . 4. Brown S.J. , Flow Induced Vibrations in Pump Impellers; A Case Study, Structural Mechanics in Reactor Technology (SMIRT) , Conference Proceedings , 1989 . Selected References Selected References • Fatigue Failures, Failure Analysis...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003567
EISBN: 978-1-62708-180-1
... of slurry pipelines. Sacrificial electrodes, such as zinc plugs in water or slurry pumps, have been used to cathodically protect the pump casing. This means of protection may be applicable to other instances where it is economically feasible. Research has shown that computer modeling is becoming...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001819
EISBN: 978-1-62708-241-9
... in the frame of the pump that made necessary a repair work. After this work, the pump started to work, but after less than 3 months the shaft was broken. In the second case, the shaft was installed in the pump and after around 2 months it was broken on the edge where a nut locked the rotor in the shaft...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001575
EISBN: 978-1-62708-217-4
...) into an Al alloy casing. Failure of the scavenge pump causes the main shaft bearings to be overlubricated because the oil is no longer drained from those compartments. Flames and smoke from the engine tailpipe (when oil gets to the hot gas flow) is the latest step of the occurred failure...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003568
EISBN: 978-1-62708-180-1
... of vapor-filled bubbles in a flowing stream of liquid. Damage occurs at the points of bubble collapse. In steam plants, the components most often damaged by cavitation erosion are feed lines, pump casings, and pump impellers. Figure 12 shows the typical appearance of a part extensively damaged...