1-20 of 540 Search Results for

Roll failure

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001535
EISBN: 978-1-62708-232-7
... Abstract Although a precise understanding of roll failure genesis is complex, the microstructure of a broken roll can often unravel intrinsic deficiencies in material quality responsible for its failure. This is especially relevant in circumstances when, even under a similar mill-operating...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001712
EISBN: 978-1-62708-234-1
... Abstract A failure analysis was conducted in late 1996 on two rolls that had been used in the production of iron and steel powder. The rolls had elongated over their length such that the roll trunnions had impacted with the furnace wall refractory. The result was distortion and bowing...
Image
Published: 01 June 2019
Fig. 1 Failures of gray cast iron paper-roll driers. (a) Axial-shell failure. (b) Circumferential-shell failure More
Image
Published: 01 June 2019
Fig. 2 Both sides of a journal-to-head failure in a cast iron paper-roll dryer. (a) Bottom of failed dryer. (b) The failed bolted-on head More
Image
Published: 30 August 2021
Fig. 117 Failures of gray cast iron paper-roll driers. (a) Axial-shell failure. (b) Circumferential-shell failure More
Image
Published: 30 August 2021
Fig. 118 Both sides of a journal-to-head failure in a cast iron paper-roll dryer. (a) Bottom of failed dryer. (b) Failed bolted-on head More
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
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c9001568
EISBN: 978-1-62708-230-3
... oriented along the roll length and primarily at the roll inside surface. Field metallographic examination showed significant grain boundary chromium-carbide precipitation and intergranular corrosion. The roll failures were attributed to chromium depletion along the grain boundaries (sensitization...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001532
EISBN: 978-1-62708-232-7
... Abstract Work rolls made of indefinite chill double-poured (ICDP) iron are commonly used in the finishing trains of hot-strip mills (HSMs). In actual service, spalling, apart from other surface degeneration modes, constitutes a major mechanism of premature roll failures. Although spalling can...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001485
EISBN: 978-1-62708-225-9
... liquids, and stray electric currents. Most common modes of failure include flaking or pitting (fatigue), cracks or fractures, creep, smearing, wear, softening, indentation, fluting, and corrosion. The modes of failure are illustrated with examples from practice. Roller bearings Rolling-bearing...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001131
EISBN: 978-1-62708-214-3
... Abstract Two 25 x 40 mm (1 x 1.5 in.) AISI 4150 hot-rolled steel bars that cracked during heat treatment were examined to determine whether the heat treating procedure had contributed to the failure. Metallographic examination of a cross section taken through the fracture revealed an oxide...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006834
EISBN: 978-1-62708-329-4
... Abstract This article is dedicated to the fields of mechanical engineering and machine design. It also intends to give a nonexhaustive view of the preventive side of the failure analysis of rolling-element bearings (REBs) and of some of the developments in terms of materials and surface...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001513
EISBN: 978-1-62708-232-7
... Abstract While in the stationary mode, capillary action at the contact line between roller and race in a steel rolling mill taper bearing caused a concentration of lubricant and moisture to occur. This lead to lines of corrosion pits at roller intervals. During subsequent operation...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001849
EISBN: 978-1-62708-241-9
... the work rolls of a steel bar straightening machine were received for failure analysis. Visual inspection coupled with optical and scanning electron microscopy were used as the principal analytical techniques for the investigation. Fractographic analysis revealed the presence of a characteristic fatigue...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.9781627082310
EISBN: 978-1-62708-231-0
Image
Published: 01 June 2019
Fig. 1 Failure of a 4140 steel locking collar machined from rolled plate. (a) Collar assembly showing fracture location. (b) Illustration of the failure with respect to the plate orientation. (c) SEM micrograph showing the cleavage-failure mode. (d) Composite micrograph showing microstructural More
Image
Published: 01 January 2002
Fig. 2 Stress risers initiating rolling-contact fatigue failure More
Image
Published: 01 January 2002
Fig. 9 Morphology of cracks leading to rolling-contact fatigue failure of PVD (TiN) coatings. (a) Crack parallel to the interface leading to spalled area for hard substrate (60 HRC) TiN coating. (b) Cracks parallel to the coating-substrate interface for hard substrate (60 HRC) TiN coating. (c More
Image
Published: 01 January 2002
Fig. 10 Rolling-contact fatigue failure modes of thermal spray cermet and ceramic coatings. Source: Ref 84 More
Image
Published: 01 January 2002
Fig. 11 Abrasive failure of the rolling wear track in thermally sprayed WC-Co coating More