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galling wear

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046371
EISBN: 978-1-62708-234-1
.... The bearing had not seized, and there was no evidence of heat discoloration in the galled areas. The inner cone, made of modified 4720 steel and carburized for wear resistance, rode on an AISI type 630 (17-4 PH) stainless steel spacer. Consequently, it was desirable to determine whether the galled spots...
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
.... Source: Ref 15 , 48 Fig. 8 Example of seizure on a piston due to insufficient cooling. Source: Ref 49 Fig. 9 Initial galling failure on powder metallurgy tool steels. Reprinted from Ref 57 with permission from Elsevier Fig. 10 Surface damage typical of galling wear...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0046388
EISBN: 978-1-62708-224-2
.... A maintenance lubrication program was not suggested, but galling could be reduced by periodic application of a solid lubricant. Bolts Galling Molybdenum disulfide Solid lubricants Wear resistance 4140 UNS G41400 Abrasive wear Heat treating-related failures Figure 1 shows a bolt...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001226
EISBN: 978-1-62708-234-1
... Gray iron (Other, miscellaneous, or unspecified) wear A slide and the two guideways of a pump had to be disassembled already during run-in time after approximately 20h because they had galled completely, before the rated speed of 800 rpm was reached. Figure 1 shows a section of the worn...
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
... effects, failure of the thread structure of the clevis occurred. The failure occurred where the cylinder rod screws into the clevis. The rod was manufactured from 1045 steel. Cylinder rods Fretting fatigue Galling Railroad wheels 1045 UNS G10450 Fatigue fracture Fretting wear A. Design...
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
..., Or Grinding, Abrasion Low-Stress, Or Scratching, Abrasion Sliding Abrasion Galling Fretting Contact Pressure Abrasive Characteristics Contact Conditions Properties of the Wear Material Example 1: Jaw-Type Rock Crusher Wear Example 2: Electronic Circuit Board Drill Wear Example...
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
...) and can cause loss of material at the surface (wear) or surface damage without a loss of material at the surface (e.g., galling or scuffing). Adhesive wear typically occurs from the sliding contact of two surfaces, where local adhesion causes separation and transfer of material from the surface...
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
... to the failure examination. durability fatigue gear failures gear strength gears gear-tooth impact stress rupture wear GEARS can fail in many different ways, and except for an increase in noise level and vibration, there is often no indication of difficulty until total failure occurs...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003558
EISBN: 978-1-62708-180-1
... and modeling the wear process; obtaining and evaluating wear data; and evaluating and verifying the solution. References References 1. Budinski K. , Incipient Galling of Metals , Proc. Intl. Conf. On Wear of Materials , ASME , 1981 , p 171 – 185 2. Lutynski C. , Simansky G...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0046222
EISBN: 978-1-62708-217-4
...Abstract Abstract The spindle of a helicopter-rotor blade fractured after 7383 h of flight service. At every overhaul (the spindle that failed was overhauled six times and reworked twice), any spindle that showed wear was reworked by grinding the shank to 0.1 mm (0.004 in.) under the finished...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0092148
EISBN: 978-1-62708-235-8
....a0003510 Low-magnification visual examination of the spool and cylinder from a failed valve revealed some burnishing, apparently the result of contact between the spool and the inside cylinder wall. Measurement of the surface profile of the spool showed no evidence of wear or galling. When...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001809
EISBN: 978-1-62708-180-1
... arrows) of overlay in a trimetal bearing Fig. 1 Schematic of the transition from inadequate (boundary) lubrication at start-up to hydrodynamic lubrication at full speed. (a) Steady load at start-up. (b) Steady load at full speed Fig. 5 Electrical wear on the surface of a thrust...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001805
EISBN: 978-1-62708-241-9
... accommodate plastic deformation. In the case of scissors, the intended use requires high hardness to enhance cutting edge retention and reduce wear. However, these inherent strength requirements may result in susceptibility to failure modes like stress corrosion cracking, depending on the use conditions...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1
... instrumentation Improper coupling Improper bearing Improper seal Insufficient shutdown devices Material of construction Corrosion and/or erosion Rapid wear Fatigue Strength exceeded Galling Wrong hardening method Design for installation Unsatisfactory piping support Improper piping flexibility Undersized...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... plating on an A286 superalloy fastener subjected to service temperatures above 315 °C (600 °F) (the melting temperature of cadmium is 320 °C, or 610 °F). Two metals specified for use in a wear application could sustain galling if the metals are similar (atomic number) and mutually soluble, such as sliding...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001536
EISBN: 978-1-62708-229-7
... in adapter tube assemblies in the control rod drive head of a pressurized water reactor, (3) thermal fatigue of a recirculation pump shaft in a boiling water reactor, and (4) failure of pump seal wear rings by nickel leaching in a boiling water reactor. Corrosion Decontamination Intergranular stress...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001813
EISBN: 978-1-62708-180-1
... and improved designs of a 17-7 PH stainless steel valve-seat retainer spring. As originally designed, the inner tabs on the spring broke off as a result of fatigue, and the outer tab exhibited wear. Abstract Abstract This article discusses the common causes of failures of springs, with illustrations...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003521
EISBN: 978-1-62708-180-1
...Damage mode identification chart Table 1 Damage mode identification chart Method Instantaneous failure mode (a) Progressive failure mode (b) Ductile overload Brittle overload Fatigue Corrosion Wear Creep Visual, 1 to 50× (fracture surface) Necking or distortion...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... the specified dimensions and tolerances for the as-manufactured part? How was the part installed? To what service environment(s) was the part exposed? Typical environments to examine include operating temperatures, stresses (steady state, cyclic), oxidizing/corrosive environments, and wear environments...
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
.... There was no sign of burn marks due to heat generation on the bearing surface. There were signs of light rubbing at the top of the bearing surface. There was minor wear on the impeller but the wear was considered as insignificant by the pump supplier. All other components on the pump internal assembly were...