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periphery cutting

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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.c9001765
EISBN: 978-1-62708-241-9
... of the annular and bottom plate and mainly concentrated over and/or near the weld junction of two sections of bottom plates. A gap between backfill and the bottom plates was also visualized around the same area along the periphery of the tank. Fig. 1 (a) Topside of the bottom plate sample, cut from...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001091
EISBN: 978-1-62708-214-3
... Abstract An ASTM A193-83a grade B7 (AISI 4140) steel turbine impeller shaft fractured after 2 months of service. Failure had initiated at three separate points around the periphery of the shaft, each associated with one of three keyways. SEM fractography, metallography, and chemical analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001415
EISBN: 978-1-62708-236-5
... were removed from all the pins and journals in order that the preparation carried out prior to building-up could be examined. In two of the pins a helical groove approximately 1 32 in. wide × 1 32 in. deep and having a pitch of 10 t.p.i., had been cut in the surfaces...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001794
EISBN: 978-1-62708-241-9
... spectroscopy on a roughly polished specimen cut at the part’s surface. The obtained results, which are presented in Table 1 , indicate that the shaft is made of grade AISI 4340, as per the design requirements. Chemical analysis Table 1 Chemical analysis C Si Mn P S Ni Cr Mo Grade AISI...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001461
EISBN: 978-1-62708-224-2
... Abstract A hook, which was marked for a safe working load of 2 tons, failed while lifting a load of approximately 35 cwts. Fracture took place at the junction of the shank with the hook portion, at which no fillet radius existed. Except for an annular region round the periphery, which...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001460
EISBN: 978-1-62708-221-1
... in. rectangular section steel bar to which eye-pieces, to facilitate anchorage, were attached by butt-welds. Failure of one weld, in each bar, after approximately .7 years' service, allowed the boom to fall and it was extensively damaged. Samples cut on each side of the fractures were received for examination...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001403
EISBN: 978-1-62708-220-4
... and had developed just below the horizontal level. One half of the sample was subjected to crack detection, using a penetrant dye technique, but cracks were not revealed; however, when the sample was cut longitudinally and opened out flat a large number of fine cracks revealed themselves, these being...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0091853
EISBN: 978-1-62708-223-5
... mineral grinding. Radiating outward from the center are six cutting flutes that are used to shear and fracture the quartz particles. The 32 mm (1.25 in.) wear ring on the outside of the plate grinds the broken rock fragments to their final size. The procedure used to grind quartz in the disk attrition...
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
... offcenter. Then he cut into the surface for about 1 4 in. and saw that the crack did not diminish appreciably. Attempting to open the crack further, the machinist struck the small end of the shaft. The shaft broke in two — but not at the crack! The break was 1 2 in. away, as shown...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001474
EISBN: 978-1-62708-224-2
... capacity. The fracture surface, as illustrated in Figure 2 , was essentially crystalline, but showed evidence of shear lips in places at the periphery, e.g. at the lower edge. A highly significant feature was the presence of a crescent-shaped area at the intrados measuring 1 2 in. × 3...
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
... cm, or 7 in., in diameter) was found to be slightly eccentric with the remainder of the shaft. The crack did not disappear after a 6.3-mm (0.25-in.) deep cut, and the crack was opened by striking the small end of the shaft. The shaft broke about 1.3 cm (0.5 in.) from the crack. Examination...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001172
EISBN: 978-1-62708-220-4
... hydrogen attack and oxygen decarburization. A ring specimen was cut off from a high pressure line of unalloyed steel St 55.25 and was tested for hydrogen attack. The high pressure line was used for a gas mixture leaving the pressure vessel of an ammonia synthesis installation. The pressure...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001361
EISBN: 978-1-62708-215-0
... the fatigue marks on the fracture surfaces (top right) and the circumferential cracks in the swaged material (top and bottom). Race The lined race displayed circumferential cracks along the outside periphery at its centerline. The race was then cut to remove the liner. Further examination disclosed...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001085
EISBN: 978-1-62708-214-3
... Hardness Three hardness specimens were removed from areas where previous grinding had been performed. The specimens were cut approximately 120° from one another on the outer periphery of the impeller. Average hardness values of 80.33, 81.83, and 85.25 HRB (∼148, 152, and 164 HB, respectively). All...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003566
EISBN: 978-1-62708-180-1
...° arc along the periphery of the end of the specimen. There was a stem on the bottom of each anvil that fitted into a radial, greased slot. This design feature allowed the anvil to move in a radial direction as the chip formed. The test fixture was placed in a mechanical testing machine, and the test...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001092
EISBN: 978-1-62708-214-3
... in.). The core hardness specified was 33 to 38 HRC. Specimen Selection A transverse slice of circular cross section was cut from the shaft, intersecting undamaged, burnished, and surface-spalled zones. The section was metallographically prepared and used for microscopic study and microhardness testing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001484
EISBN: 978-1-62708-229-7
... the periphery. The boundary line between the affected and unaffected regions indicates an isothermal corresponding to a temperature of approximately 800°C., the upper critical temperature of the material. Adjacent to the rubbed face a hard band, approximately 1 64 in. thick, was evident, this forming...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001811
EISBN: 978-1-62708-241-9
... observation revealed that the received tube (deformed tube) was highly deformed at one end, Fig. 1 , while the other end had no such deformation. In order to obtain samples, the tube was cut (1.5 mm) from the deformed side. It was observed that the tube regained its original shape after cutting. Fig. 1...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001428
EISBN: 978-1-62708-224-2
... was submitted for assessment of its suitability for the intended purpose. The eyebolt, which was marked for a safe working load of 18 cwt. at 0°, consisted of a 5 8 in. standard eyebolt welded at the periphery to an intermediate collar piece, 1 1 2 in. diameter × 1 7 8...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001329
EISBN: 978-1-62708-215-0
... Physical Features The first specimen examined ( Fig. 1 ) was an elbow fitting section that appeared to have been cut from a 25 mm (1 in.) diam elbow. There were no visible cracks on either the weld or the outside surface of the fitting. Specimens 2 and 3 were valve bodies, one of which had visible...