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friction heating

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0065827
EISBN: 978-1-62708-221-1
... with superior properties was initiated. The nominal composition of Fe-0.50C-0.30Mn-0.40Si-5.00Cr-2.00Mo was developed which achieved the goals of edge retention, resistance to softening under frictional heating, wear resistance, ease of heat treatment, dimensional stability in heat treatment, grindability...
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
... discoloration (particularly on the driven gear) were also observed. The gears were made from 32Cr-Mo-V13 steel, hardened and nitrided to 750 to 950 HV. Micrographic inspection of the gear teeth revealed microstructural changes that, in context, appear to be the result of friction heating. The spacers consist...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001754
EISBN: 978-1-62708-241-9
... temperature operation or localized frictional heating except at the corner between the raceway and shoulder where a slight lip curling effect was noted. Though notable, when compared with typical high RPM bearing failures, it was not considered to be significantly damaged. Fig. 4 Close-up view...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0047813
EISBN: 978-1-62708-229-7
... beginning at the periphery of the shaft. Thus, friction welding was confined to a small part of the 17.8-cm (7-in.) diam cross section. The center region of the fracture surface of the shaft ( Fig. 1 , right side) contained swirls of metal softened by frictional heat as a result of rotation of the lower...
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
..., deformation, and a white hardened layer were observed at the journal surface indicating frictional heating ( Fig. 16 ). Fig. 16 Cracking, deformation, and a white hardened layer at the journal surface of Crank #1 Other areas exhibited similar signs of friction damage, although not as pronounced...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
... bearings are designed on the principle of rolling contact rather than sliding contact; frictional effects, although low, are not negligible, and lubrication is essential. The article lists the typical characteristics and causes of several types of failures. It describes failure by wear, failure by fretting...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001305
EISBN: 978-1-62708-215-0
... heating and cooling of the wheel rim and flange due to brake locking or misapplication of the hand brake. Either of these events can cause severe frictional heating of the rim and flange zones, resulting in hoop compressive stresses high enough to exceed the yield strength of the wheel material...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001815
EISBN: 978-1-62708-180-1
..., because the heat generated varies with rate of sliding as well as with pressure. If both pressure and sliding speeds are excessive, the frictional heat developed can cause destruction of tooth surfaces. This pressure-velocity factor, therefore, has a critical influence on the probability of galling...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048787
EISBN: 978-1-62708-235-8
... temperature of the case plus frictional heat generated during spinning resulted in extreme overheating and some localized melting. The temperature of the metal must be more closely controlled so that the spinning operation is done at a lower temperature, thus avoiding incipient melting and formation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001689
EISBN: 978-1-62708-233-4
... caused property deterioration resulting in embrittlement and fracture, it was concluded that the shaft must have fractured (most probably by fatigue cracking originating at the change of section) and that heating had then taken place from friction between the rotating input shaft and the remaining part...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
... properties of the transferred film. Reprinted with permission from Ref 1 A distinction within the interfacial wear process may be made based on whether or not the frictional heat dissipation is isothermal or quasi-adiabatic. Isothermal heat dissipation can change the mechanical property...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001487
EISBN: 978-1-62708-234-1
... of the strip conductor due to centrifugal force. This leads to a high frictional binding force between turns and prevents axial expansion under normal heating in service. Rotor trouble which proved to be due to copper shortening was found in a set rated at 27.5 MW. It was manufactured in 1934 at which time...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0047321
EISBN: 978-1-62708-224-2
... drum drove the brake drum, and resistance was provided by brake bands applied to the outside surface of the brake drum. Friction during heavy service was sufficient to heat the brake drum, clutch mount, and disk to a red color. Examination of the assembly indicated that the brake drum would cool faster...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001846
EISBN: 978-1-62708-241-9
... of journal surface worn (journal C) indicates that overheating has taken place due to the intense friction wear between the journal and sleeve. Over-heating of the journal surface assembled with sleeve decreased the fatigue strength of the journal surface. In addition, the root fillet region by which stress...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001817
EISBN: 978-1-62708-241-9
... on wire surface as a thin layer, are due to the condition of the frictional heat between wires and sheave. The thin martensite layer may crack when the wire is bent, initiating fatigue crack on the wire surface. Raoof and Kraincanic [ 7 ] used a model to analyze the large-diameter steel ropes...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001822
EISBN: 978-1-62708-180-1
...: The bearing surface was heated by friction because of loss of lubrication The babbitt metal lining melts between about 240 and 315 °C (465 and 600 °F) and wets the surface, but penetration does not occur The babbitt metal is displaced, possibly by mechanical action or volatization The bronze backing...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
... ,” Madsen’s Shop & Supply Inc. , http://www.tmadsens1.com/saw_piston_fail.htm , accessed Jan 10, 2019 50. Heide van der E. and Schipper D.J. , Galling Initiation due to Frictional Heating , Wear , Vol 254 , 2003 , p 1127 – 1133 10.1016/S0043-1648(03)00324-7 51. Podgornik...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001646
EISBN: 978-1-62708-219-8
... and is usually a hard martensitic region that develops as a consequence of frictional heating and rapid cooling. At regions significantly away from the fracture end, the longitudinal sections of the Z-profile wires displayed normal cold-drawn pearlitic structures ( Fig. 3 ), showing that these regions were...
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
... surface. As fine slivers or pieces come off, additional hard particles may be formed by reaction between the steel and the oil or gas present if the resultant friction and heat are sufficient. Scabs or solid chunks of laminated or compacted slivers and other deposits are sometimes formed ( Fig. 9b...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1
... with obtaining specifications and drawings and should encompass all the design aspects of the failed part as well as all manufacturing and fabrication details—machining, welding, heat treating, coating, quality-control records, and pertinent purchase specifications. Additional information on upfront planning...