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ring-rolling machines

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001831
EISBN: 978-1-62708-241-9
...Abstract Abstract An air blower in an electric power plant failed unexpectedly when a roller bearing in the drive motor fractured along its outer ring. Both rings, as well as the 18 rolling elements, were made from GCr15 bearing steel. The bearing also included a machined brass (MA/C3) cage...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003564
EISBN: 978-1-62708-180-1
... was tested in contact with an En31 steel lower ball, and this increased the time of failure to 70 s. Wear properties of silicon nitride in dry rolling-sliding contact were studied using a ring-on-roller test machine ( Ref 52 ). Under no lubrication and a maximum Hertzian pressure of 1.1 GPa (0.16 × 10 6...
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
... lubricant or with lubricant that has hardened Wear at points of contact with cage Inertia forces acting on cage and insufficient lubricant Wear of ball cage Inner or outer rings out of square; abrasive matter in bearing Internal looseness from wear of raceway surfaces and rolling elements...
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
... for a radial rolling-element bearing is the calculated constant radial load that 90% of a group of apparently identical bearings with stationary outer rings can theoretically endure for one million revolutions of the inner ring. The basic load rating is a reference value only because, as a load, it usually...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001842
EISBN: 978-1-62708-241-9
... concentration carbon steel heat affected zone metallurgical notch ring test cyclic bending stress fatigue limit ASTM A106 (seamless carbon steel pipe) UNS K02501 Introduction Description of the Fractured Roll Roll Balance Condition and Critical Speed Analysis of the As-Manufactured Condition...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0059924
EISBN: 978-1-62708-235-8
...Abstract Abstract The large steel ring produced for a nuclear application from a billet of 8822 steel was inspected. The large billet was first forged into a doughnut preform in a large press, and then formed into the ring by ring rolling. A straight-beam ultrasonic inspection was instituted...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001243
EISBN: 978-1-62708-225-9
...Abstract Abstract A needle bearing from a filling and seating machine for milk cartons became unusable due to corrosion and fracture of a ring after only four weeks of operation of the machine in a Finnish milk packing plant. These bearings were subject to corrosion by water condensates...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001796
EISBN: 978-1-62708-241-9
... are shown in Table 1 . An overall view of the actual roller bearing that had accumulated over 15,000 h of engine operation is presented in Fig. 2a . The bearing outer ring component is machined to a slightly elliptical shape to allow for the necessary preloading condition. A schematic drawing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001724
EISBN: 978-1-62708-234-1
... by flattening and edging. Hot expanding is carried out on a mandrel in two stages. The forgings are cooled and then rough machined. Expanding (by forging under the press on a mandrel) is carried out after heating the ring to 1925° F., then allowing to cool to 900° F. when expanding commences. Stress...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
.... , Tsushima N. , and Muro H. , Observations of the Peeling Mode of Failure and Surface-Originated Flaking from a Ring-to-Ring Rolling Contact Fatigue Test , Rolling Contact Fatigue Testing of Bearing Steels , Hoo J.J.C. , Ed., American Society for Testing and Materials , West Conshohocken...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006806
EISBN: 978-1-62708-329-4
...), a drip-feed device (a wick that carries lubricant from a reservoir to the shaft surface), ring lubrication, and grease lubrication may be sufficient. However, it is noteworthy that wear can be aggravated by a lack of lubrication. To reduce wear and fulfill the bearing functions, it is important to design...
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
... furnace rolls were received for analysis in Q4 1996. The rings had been taken from the rolls according to the sketch shown in Figure 1 . The rolls were reported to be MO-RE 1, a nickel-chromium-iron alloy with a long history and good record in table roll applications. The customer indicated...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001730
EISBN: 978-1-62708-229-7
....a0003544 The pulverizer, which is of the ball and race type ( Fig. 1 ), has one revolving and one stationary ring, between which are a set of grinding balls rolling in a horizontal plane. Force is applied through the stationary top ring (supported from the housing but free to move up and down...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001259
EISBN: 978-1-62708-233-4
... sections of equally as many rings of two “bad” shipments were examinated. In the following these are designated as S1 and S2. Twenty-seven sections of a “good shipment are designated as G. Four rings of each shipment were analyzed as to their chemical composition. The analyses showed in the average...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001691
EISBN: 978-1-62708-234-1
... in Figure 2 . Fig. 1 The APS storage ring vacuum chamber. Three small round cooling holes are seen here. Fig. 2 Transition assemblies made from 3003 aluminum roll-bonded to stainless steel (top). SEM and x-ray EDS was used to survey the corrosion regions ( Figs. 3 and 4 ). Fig...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006818
EISBN: 978-1-62708-329-4
...) component that cracked during quenching due to the presence of soft spots (arrows) on the surface. These soft spots were revealed by cold etching the surface with 10% aqueous nitric acid. Original magnification: 0.4× Fig. 16 (a) AISI O1 tool steel ring forging that cracked during quenching...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001814
EISBN: 978-1-62708-180-1
... martensite and unstable retained austenite, often fail by quench cracking. Figure 16(a) shows a 44-cm (17 1 2 -in.) OD × 33-cm (13-in.) ID × 5-cm (2-in.) thick ring forging made of AISI O1 tool steel that cracked during quenching. Temper color was present on the crack surface. The interior...
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
... readings taken at several axial locations on the drive shaft showed a reasonably uniform hardness of approximately 570 HV. The impeller and the retaining ring each had a hardness of approximately 780 HV, and the parts surrounding the impeller (including the vanes) exhibited a hardness of approximately 630...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0089338
EISBN: 978-1-62708-224-2
...Abstract Abstract A steel lifting eye, manufactured from grade 1144 steel, failed during service. The eye ring fractured in two places, adjacent to the threaded shank and diametrically opposite to this region. Woody overload features, typical for resulfurized steels were revealed by SEM...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001424
EISBN: 978-1-62708-233-4
...Abstract Abstract Two examples concerning fabricated mild steel rotor spiders which failed due to lack of torsional rigidity, probably supplemented by the presence of high internal stress, are described. The machine concerned in the first case was a 3,000 hp three-phase slip-ring motor...