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Repair welding

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930179
EISBN: 978-1-62708-359-1
... Abstract This article describes the repair of weld defects and failed structures. It provides information on three factors that must first be considered before attempting a repair, namely material weldability, nature of the failure that prompted the repair, and involvement of any code...
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Published: 01 November 2007
Fig. 12.23 Repair welding can be performed on the corroded waterwall overlay by grinding followed by overlay welding. An alloy 625 weld overlay on the waterwall after 10 years of service in a RDF unit. Shown in the photograph are two tubes and three membranes. More
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Published: 30 November 2013
Fig. 8 (a) Catastrophic brittle fracture of a 260 in. diam solid-propellant rocket motor case made of 18% Ni, grade 250, maraging steel. The case fractured at a repaired weld imperfection during a hydrostatic pressure test. Fracture occurred at about 57% of the intended proof stress. All welds More
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Published: 01 November 2012
Fig. 26 Brittle fracture of solid rocket motor case during proof test. (a) Catastrophic brittle fracture of a 660 cm (260 in.) diameter solid propellant rocket motor case made of 18% Ni, grade 250, maraging steel. The case fractured at a repaired weld imperfection during a hydrostatic pressure More
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Published: 01 December 2018
Fig. 6.74 Close-up views of (a) OD side and (b) ID side of the tube bend showing puncture and repair weld area More
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Published: 01 September 2005
Fig. 52 Overload failure of a bronze worm gear (example 4). (a) An opened crack is shown with a repair weld, a remaining casting flaw, and cracking in the base metal. (b) Electron image of decohesive rupture in the fine-grain weld metal. Scanning electron micrograph. Original magnification More
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Published: 01 November 2012
Fig. 6 Catastrophic brittle fracture of a 660 cm (260 in.) diameter solid propellant rocket motor case made of 18% Ni, grade 250, maraging steel. The case fractured at a repaired weld imperfection during a hydrostatic pressure test. Fracture occurred at approximately 57% of the intended proof More
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Published: 01 January 2017
Fig. 15.9 Schematic of weld overlay for repair of a pipe girth weld. IGSCC, intergranular stress-corrosion cracking More
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Published: 01 August 2018
Fig. 4.10 Macrograph of a radial section of a tram wheel that was repaired by welding. Deposited metal appears light while the heat affected zone (HAZ) (see Chapter 14, “Structural Steels and Steels for Pressure Vessels, Piping, and Boilers,” in this book) appears dark. Etchant: iodine More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930329
EISBN: 978-1-62708-359-1
... and for overlay cladding, service conditions during repair, and welding procedural idiosyncrasies of cobalt-base alloys. chemical composition fusion zone segregation grain boundary precipitation grain growth heat treatment heat-affected zone hot cracking nickel alloys porosity weldability...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270189
EISBN: 978-1-62708-301-0
... of the vane ( Fig. CH52.1 ). This fracture surface showed clear beach marks, indicative of delayed failure. Further, it was observed on the same runner, the vane diametrically opposite the fractured vane had developed a similar crack, about 3 in. in length, which was repair welded during the previous...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460277
EISBN: 978-1-62708-285-3
... and for providing a functionally upgraded material when a part comes in after service. Cold spray is able to perform repair and refurbishment with a faster turnaround time; it also provides solutions that do not require dealing with the thermal stresses that are a part of other repair processes, such as welding...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200369
EISBN: 978-1-62708-354-6
.... Joint welding... Production welding used to weld cast components together to obtain an integral unit. Finishing welding... Production welding carried out to ensure the agreed quality of the casting. Repair welding... Any welding carried out after delivery to the end user, i.e., after the casting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200220
EISBN: 978-1-62708-354-6
... with repairing castings that have been returned to the foundry Internal Failure Costs are expenses incurred in manufacturing castings that are scrapped in the foundry Rework Costs are the costs of welding casting discontinuities in the foundry Fig. 17-3 Quality cost report Quality costs...
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Published: 01 August 2018
Fig. 8.9 Macrograph of the transverse section of a steel casting for railway application. Presence of porosity in the thickest section of the part. A weld repair region can also be seen at the bottom and to the right of the figure. (see Chapter 14, “Structural Steels and Steels for Pressure More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480265
EISBN: 978-1-62708-318-8
... Abstract This chapter discusses the various methods used to join titanium alloy assemblies, focusing on welding processes and procedures. It explains how welding alters the structure and properties of titanium and how it is influenced by composition, surface qualities, and other factors...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930057
EISBN: 978-1-62708-359-1
... or rejection. Thus, repairs may be made unnecessarily and solely by implication, without a critical engineering assessment. Consequently, the engineering community now tends to use the word “discontinuity” or “flaw” instead of “defect.” The significance of a weld discontinuity should be viewed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820013
EISBN: 978-1-62708-339-3
.... Not recommended for quenched-and-tempered steels unless reheat treatment is to be done. Slow welds cooling allows hydrogen to escape weld area. Causes rapid cooling of HAZ. General comments Very versatile, low-cost process. Especially strong on nonroutine or repair jobs. Usually not economical on standard...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120065
EISBN: 978-1-62708-269-3
... material that has been heat treated or otherwise thermomechanically processed. Cast alloy welding generally is done for purposes of casting repair (see Chapter 6) . Joining a Reactive Metal Titanium has a strong chemical affinity for oxygen, and a stable, tenacious oxide layer forms rapidly...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930163
EISBN: 978-1-62708-359-1
... cracks. For this reason, most welding codes include clauses that cover the inspection of production welds and set acceptance standards for the discontinuities that may be found. Any flaws that are not acceptable are repaired. The acceptance standards included in the majority of codes are based...