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scuffing

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Image
Published: 01 January 1996
Fig. 3 An example of gear tooth scuffing. Note radial scratch lines More
Image
Published: 01 January 2000
Fig. 2 Specimen gear with scoring (scuffing) failure More
Image
Published: 30 August 2021
Fig. 23 Scuffing that occurred on startup of a case-hardened (59 HRC) gear More
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
... modes of adhesive wear including scoring, scuffing, seizure, and galling, and describes the processes involved in classic laboratory-type and standardized tests for the evaluation of adhesive wear. It includes information on standardized galling tests, twist compression, slider-on-flat-surface, load...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006354
EISBN: 978-1-62708-192-4
..., and electrical discharge), scuffing, and Hertzian fatigue (including macropitting and micropitting). Details for obtaining high lubricant specific film thickness are presented. The article describes the selection criteria for lubricants, such as oil, grease, adhesive open gear lubricant, and solid lubricants...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003285
EISBN: 978-1-62708-176-4
...Abstract Abstract Surface damage from sliding contact is related to the adhesion of mating surfaces in contact. This article describes the methods for evaluation of surface damage caused by sliding contact. It defines adhesive wear in terms of asperity, cold welding, galling, scuffing, seizure...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006820
EISBN: 978-1-62708-329-4
... lubrication, the measurement of the backlash, and the necessary factors for starting the failure analysis. Next, the article explains various gear failure causes, including wear, scuffing, Hertzian fatigue, cracking, fracture, and bending fatigue, and finally presents examples of gear and reducer failure...
Image
Published: 01 January 2002
Fig. 28 52100 steel jet-engine ball bearing that failed because of overheating resulting from misalignment. (a) Photograph of bearing components showing fractured cage. (b) Enlarged view of cage showing damage caused by scoring, scuffing, and plastic deformation around ball pockets More
Image
Published: 30 August 2021
Fig. 67 An AISI 52100 (100Cr6 or WN 1.3505) steel jet-engine ball bearing failed due to overheating that resulted from misalignment. (a) Bearing components showing fractured cage. (b) Enlarged view of the cage showing damage (scoring, scuffing, plastic deformation of the ball pockets More
Book Chapter

By Charles V. White
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001002
EISBN: 978-1-62708-161-0
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005776
EISBN: 978-1-62708-165-8
... of the Compound Zone Produced in Salt Baths The resistance to scuffing after salt bath nitrocarburizing treatments has been frequently tested with a Falex lubricant testing machine ( Fig 17 , 18 , 19 ). A 32 by 6.4 mm (1.25 by 0.25 in.) test piece is attached to the main drive shaft by means of a shear pin...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005740
EISBN: 978-1-62708-171-9
... such as synchronizer rings and torque converters. automotive coatings cast iron cold spray connecting rod bearings cylinder liners exhaust system oxygen sensors piston rings scuffing resistance synchronizer rings thermal spray coating torque converters turbochargers wear resistance SINCE...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003279
EISBN: 978-1-62708-176-4
... the same friction coefficients but greatly different wear rates. In this Section, tests designed specifically to evaluate the adhesion, friction, and wear behavior of various material systems are described. Included within the wear category are other forms of surface damage, like galling and scuffing...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006308
EISBN: 978-1-62708-179-5
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006427
EISBN: 978-1-62708-192-4
... Piston Rings As traditionally indicated ( Ref 7 ), an ideal piston ring material must meet the following requirements: low friction and wear losses, superior scuffing resistance, tolerances for marginal lubrication and rapidly varying environments, good running-in wear behavior, long term...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006435
EISBN: 978-1-62708-192-4
... connotations are sometimes erroneously substituted for one another. For example, in certain instances the surface of a plain bearing may be described alternately as being polished, burnished, or scuffed. Strictly speaking, these three terms are not equivalent. The use of tribology terminology also varies...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003327
EISBN: 978-1-62708-176-4
... a more severe effect on the surface durability of the material. Fig. 1 Kinematics of a gear mesh Failure modes on tooth flanks are caused by this combination of rolling and sliding. The more common failure modes are scoring (or scuffing ), wear , and pitting . These modes are discussed...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002375
EISBN: 978-1-62708-193-1
... constant). Heat generation cannot be controlled above a certain maximum viscosity (for a given oil). Breakdown of the oil film will occur when the gear tooth surface-equilibrium temperature has reached a specific value. The scuffing load limit of mating tooth surfaces is speed dependent...
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
..., breakdown of the oil film will occur when the gear-tooth surface-equilibrium temperature has reached a specific value. Fifth, the scuffing load limit of mating tooth surfaces is speed dependent. With increasing speed, the load required to be supported by the reaction film decreases while the load that can...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006401
EISBN: 978-1-62708-192-4
... an effective micro-EHL film for protection against scuffing ( Ref 35 , 36 ). The EHL mechanism can also be used to generate traction, enabling power transmission by using frictional forces. It can generate a high tractive force with minimal wear, reduced noise, and infinitely variable output speed...