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shielded metal arc welding

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0046911
EISBN: 978-1-62708-227-3
... thick ASTM A285, grade B, steel plate. One joint was welded using the semiautomatic submerged arc process with one pass on each side. A second joint was welded manually by the shielded metal arc process using E6010 welding rod and four passes on each side. The silicon content of the shielded metal arc...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c0048087
EISBN: 978-1-62708-231-0
... Abstract Several of the welds in a hoist carriage tram-rail assembly fabricated by shielded metal arc welding the leg of a large T-section 1020 steel beam to the leg of a smaller T-section 1050 steel rail failed in one portion of the assembly. Four weld cracks and several indefinite indications...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046535
EISBN: 978-1-62708-234-1
... of pipe were joined by shielded metal arc welding. Soundness of the welded joints was determined by water back-pressure testing after several lengths of pipe had been installed and joined. Before completion of the pipeline, a pressure drop was observed during back-pressure testing. An extreme depression...
Image
Published: 01 June 2019
Fig. 1 Microstructures of weld metals in T joints of ASTM A285, grade B, steel. (a) Submerged arc weld in a galvanizing vat that failed by molten-zinc corrosion along elongated ferrite bands such as those shown. Etched with 2% nital. 100x. (b) Multiple-pass manual shielded metal arc weld More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0047645
EISBN: 978-1-62708-229-7
... of the welding torch were overhauled to ensure that leak-in or entrainment of air was eliminated. Also, the purity of the shielding-gas supplies was rechecked to make certain that these had not become contaminated. Contaminants Gas turbine engines Shielded arc welding Thermal stresses Ti-5Al-2.5Sn UNS...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047641
EISBN: 978-1-62708-235-8
... Abstract A Ti-6Al-4V alloy pressure vessel failed during a proof-pressure test, fracturing along the center girth weld. The girth joints were welded with the automatic gas tungsten arc process utilizing an auxiliary trailing shield attached to the welding torch to provide inert-gas shielding...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048814
EISBN: 978-1-62708-229-7
... process with a backing strip. The backing was back gouged off, and the weld was completed from the inside with E8018-C3 electrodes by the shielded metal arc process. Striations of the type normally associated with progressive or fatigue-type failures including beach marks that allowed tracing the origin...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006808
EISBN: 978-1-62708-329-4
... of brittle fracture of welded ship structure. SS Schenectady , which fractured at its outfitting dock, was one of 19 Liberty ships that experienced brittle cracking of the welded structure. While shielded metal arc welding was common prior to 1940, its application during ship building was limited...
Image
Published: 30 August 2021
Fig. 35 Radiograph showing cluster porosity in gas metal arc welding process due to disruption of shielding gas. Incomplete penetration (IP) of the weld root is also shown. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0047508
EISBN: 978-1-62708-221-1
... and drilled for bolting on a heavy steel plate. The tank was filled to a record height. In mid-Jan the temperature dropped to -31 deg C (-23 deg F), with high winds. The tank split open and collapsed. The welding used the shielded metal arc process with E6010 electrodes, which could lead to weld porosity...
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
... at the weld toe Cracks—hot or cold, longitudinal or transverse, crater and at weld toe Gas porosity Arc strike Spatter Backing piece left on: failure to remove material placed at the root of a weld joint to support molten weld metal Subsurface features that are causes for rejection...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089734
EISBN: 978-1-62708-235-8
... psi) for automobile-tire curing presses, developed a number of leaks within about 4 months after 2 to 3 years of leak-free service. All the leaks were in shielded metal arc butt welds joining 200 mm (8 in.) diameter 90° elbows and pipe to 200 mm (8 in.) diameter welding-neck flanges. A flange-elbow...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.9781627081801
EISBN: 978-1-62708-180-1
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001647
EISBN: 978-1-62708-235-8
... Observations Relating to Cause Surface contamination Presence of contaminants potentially detectable before or after welding Random distribution of porosity Poor shield gas coverage Surface discoloration from oxidation Random distribution of porosity Impurities in base metal Chemistry...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0006548
EISBN: 978-1-62708-180-1
... SIMS secondary ion mass spectroscopy SLC sustained load cracking SMAW shielded metal arc welding SMIE solid metal induced embrittlement S-N stress-number of cycles SRB sulfate-reducing bacteria SSC sulfide-stress cracking tc critical thickness T thickness T throat T temperature Tc recrystallization...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0091362
EISBN: 978-1-62708-220-4
.... Second, when gas tungsten arc welding, a 19 mm (0.75 in.) diam ceramic nozzle with gas lens collect body is recommended. An argon gas flow rate of 28 L/min (60 ft 3 /min) is optimum. Smaller nozzles are not recommended. Argon back gas shielding is mandatory at a slight positive pressure to avoid...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048846
EISBN: 978-1-62708-234-1
... been fabricated by the manual shielded metal arc process. The submerged arc welds were cracked in the weld metal, but the submerged arc welds were cracked in the adjacent base metal or HAZ. The difference in the failure loci was apparently a result of the relative strengths and ductilities...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001534
EISBN: 978-1-62708-220-4
... to 241 K. It was reported that the failed pipe had been welded to the dished end by shielded metal arc welding using AWS E 6013 flux-coated electrode with a recommended moisture content of less than 1%. Before being placed in operation, the welded pipe was hydrostatically tested at a pressure of 3.2...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001667
EISBN: 978-1-62708-235-8
..., can cause a reduction in the mechanical properties of the material [ 1 ]. The potential absorption of oxygen into titanium surfaces is greatly increased during welding operations unless the environment is strictly controlled. Argon is generally used as a shielding gas in the tungsten-arc welding...
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...