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flash welds

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Published: 01 June 2019
Fig. 28 Scale build up and minor attack at flash welded joint More
Image
Published: 01 June 2019
Fig. 4 Location of fracture with respect to flash weld. (×5). More
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
... welding processes. The article also describes failure origins in other welding processes, such as electroslag welds, electrogas welds, flash welds, upset butt welds, flash welds, electron and laser beam weld, and high-frequency induction welds. arc welding brittle fracture electrogas welds...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001462
EISBN: 978-1-62708-224-2
.... The contour of the surface of the link suggested that a slight depression was present in the region from which the crack started. Fig. 4 Location of fracture with respect to flash weld. (×5). The results of Brinell hardness tests showed: Link material 170–187 Heat-affected zone adjacent...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001396
EISBN: 978-1-62708-229-7
... equipment should be prevented from entering the boiler itself. Also, it is good practice to reduce as far as possible the intrusion of weld flash and other impedances to smooth flow within the boiler tubes. Boiler tubes Corrosion products Magnetite Boiler tube steel High-temperature corrosion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0048052
EISBN: 978-1-62708-224-2
... occurred in links having hardness values in the range of 375 to 444 HRB. It was revealed by the supplier that the previous hardness level of 302 to 375 HRB was increased to minimize wear which made the links were made notch sensitive and resulted in fractures that initiated at the butt-weld flash...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001820
EISBN: 978-1-62708-180-1
...-hardness region (b) (a) Electric flash welding, electric-resistance welding, or electric-induction welding without the addition of extraneous metals. (b) These arc a problem in gathering lines carrying sour gas (gas containing H 2 S). Causes of Preservice Test Failures As shown...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006822
EISBN: 978-1-62708-329-4
... Electric resistance weld flaws Flash weld flaws Furnace butt weld flaws Hook cracks Cold welds Incomplete fusion Stitching Inclusions Shielded metal arc welding flaws Gas metal arc welding flaws Submerged arc welding flaws Misalignment Porosity Incomplete fusion Incomplete...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001311
EISBN: 978-1-62708-215-0
... levels above the area of uniform corrosion, shows that the weld was dendritic, indicating either improper control of the flash-welding process or the use of filler metal. Pronounced localized dissimilar-metal corrosion occurred to a depth of about 0.38 mm (0.015 in.) in the base metal at the interface...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0047817
EISBN: 978-1-62708-233-4
... decarburized layer was found on the inner surface of the flange portion, but was not detectable in the shaft portion. The inner surface had a poor finish, and there was a sharp corner at the intersection of the sidewall and bottom of the hole. The weld flash protruded from the inner wall, producing a small...
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
... (power) Torsional fatigue 6150 UNS G61500 Fatigue fracture A unique failure developed in the central shaft of a coal pulverizer at our plant. A crack appeared in the shaft at one place and then welded by friction around the circumference while the pulverizer continued to operate. Then another...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001359
EISBN: 978-1-62708-215-0
... testing. The fatigue cracks had initiated in the vicinity of these beads and propagated through the blade material. The blades were made of titanium alloy IMI 550, with a nominal composition of 4% Al, 4% Mo, were manufactured by the closed-die forging process. Targeting bosses flash buttons...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001526
EISBN: 978-1-62708-229-7
... of the header and through the full cross-sectional thickness. The subsequent inspection of this header and the east superheater header revealed the presence of extremely severe ligament cracking. The resultant two segments of the header were held together by the remnants of several tube-to-header welds...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001124
EISBN: 978-1-62708-214-3
... cables fractured within 5 to 8 years of, service in Alaskan tundra. The cables were comprised of 19-wire strands; the wires were aluminum alloy 6201-T81. Visual and metallographic examinations of the cold-upset pressure weld joints in the wires established that the fractures were caused by fatigue...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006758
EISBN: 978-1-62708-295-2
... not have as much relevance. In other instances, a material defect, weld defect, or machining defect may turn out to be the factor in allowing the damage, and prior NDE turns out to be of high importance in determining if there was a pre-existing flaw. Nondestructive evaluation techniques allow...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001064
EISBN: 978-1-62708-214-3
... brought in by tanker. This potable water was resident in the tanks for 3 months. Leaks in the tank walls were neither noted nor found. Areas of iridescent staining and light corrosion around welds in an accessible tank were investigated. Although pitting could be found near welds in a stainless steel...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006935
EISBN: 978-1-62708-395-9
..., it is preferable to use foam inserts at the edge, unless the edge can be cut to size, because placing glass exactly to the edge is not only very difficult, but it can also lead to thick parts if it is trapped in the tool flash or in resin-rich edges. Wrapping round foam makes it easier to place the glass...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
..., visual examination, microscopic examination, chemical analysis, and mechanical tests. The article explains corrosion fatigue of tubing of heat exchangers caused by aggressive environment and cyclic stress. It also discusses the effects of design, welding practices, and elevated temperatures...
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
..., weld defects, or arc strikes. Occasionally, brittle fractures are encountered, particularly in low-temperature environments or as a result of impact or a rapidly applied overload. Brittle fracture may thus be attributable to inappropriate choice of material because of incomplete knowledge...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006810
EISBN: 978-1-62708-329-4
..., gross nonmetallic inclusions, brittle second-phase particles, weld defects, or arc strikes. Occasionally, brittle fractures are encountered, particularly in low-temperature environments or as a result of impact or a rapidly applied overload. Brittle fracture may thus be attributable to inappropriate...