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repair welding

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460277
EISBN: 978-1-62708-285-3
... 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 or thermal spray. An...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290099
EISBN: 978-1-62708-306-5
... that must be removed or corrected. Neither construction materials nor engineered structures are free from imperfections, and welds and weld repairs are not exceptions. Weld acceptance standards are used when a discontinuity has been clearly located, identified, and sized, its orientation determined...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290079
EISBN: 978-1-62708-306-5
... successfully repaired by using the thermit welding process. Sections of this chapter were adapted from “Other Fusion Welding Processes” in Metals Handbook Desk Edition , 2nd ed., ASM International, 1998 doi: 10.31399/asm.hb.mhde2.a0003208 ; and from “Hybrid Laser-Arc Welding” by B.M. Victor in Welding...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230401
EISBN: 978-1-62708-298-3
... for aluminum, is recommended. The flux residue should be removed in a safe manner to avoid any health hazards [ ASM 1993 , American Welding Society 1998 ]. Minor defects or discontinuities in a brazed joint can be repaired by soldering. By first plating beryllium with copper and then nickel...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290023
EISBN: 978-1-62708-306-5
... rating as low as 20% may be sufficient for maintenance and repair applications. Wire feeders for constant-voltage FCAW systems are generally simple devices that provide a constant wire feed speed. The power supply provides sufficient current to maintain an arc at the voltage that is preset at the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480161
EISBN: 978-1-62708-318-8
... melting, electron beam hearth melting, rammed graphite mold casting, sand casting, investment casting, hot isostatic pressing, weld repair, and heat treatment -- along with related equipment, process challenges, and achievable properties and microstructures. It also explains how titanium parts are...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280149
EISBN: 978-1-62708-267-9
... fabrication or weld repair of an individual component. While there is a continuing trend to standardization of specifications, unique specification requirements could be encountered by designers planning to use certain superalloys. This situation may be characteristic of the more technologically sophisticated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480265
EISBN: 978-1-62708-318-8
... that the welds in the assembly are satisfactory. Also, if the welds become discolored while welding the assembly, bend-test specimens are welded to determine if the atmosphere in the chamber has become excessively contaminated. In making repair welds, defects must first be completely removed by...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030096
EISBN: 978-1-62708-282-2
... was caused by chloride SCC. The cracking probably did not happen during operation at 15 °C (60 °F) or lower. It is thought that the cracking most likely occurred while the coil was being decontaminated at 205 to 260 °C (400 to 500 °F) in preparation for weld repairing of the leak. Brine trapped in the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610263
EISBN: 978-1-62708-303-4
... Abstract This chapter discusses the fatigue behavior of bolted, riveted, and welded joints. It describes the relative strength of machined and rolled threads and the effect of thread design, preload, and clamping force on the fatigue strength of bolts made from different steels. It explains...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130503
EISBN: 978-1-62708-284-6
... psig), 205 °C (400 °F) steam to a paper machine. This line was 30 m (100 ft) downstream from a spray attemperator that cooled higher-temperature steam by spraying boiler feedwater into the line. When cracks were initially discovered, they were ground out and rewelded. The repair welds reportedly...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290279
EISBN: 978-1-62708-306-5
... producing permanent joints or allowing disassembly. The advantages of this approach are that no surface treatment is required and disassembly of the components for inspection and repair is straightforward. The main limitations are increased weight, the presence of large stress concentrations around the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280323
EISBN: 978-1-62708-267-9
... tips, new hard face has been welded in place. Some concerns about refurbishment and repair should be noted: For coatings: It is imperative for successful recoating that all the old coatings be removed. Masking may be required to prevent coating removal from certain areas, such as...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310213
EISBN: 978-1-62708-286-0
... a very consistent grit length and depth. The exception to this rule are abrasively applied or rolled-on long-grain finishes. These have very long grit lines, so grit length is easily duplicated with a belt sander, the usual tool available for field repairs. Even welds can be removed and reblended to...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030338
EISBN: 978-1-62708-282-2
... Abstract This chapter discusses the most common causes and contributing factors for external corrosion and stress-corrosion cracking on oil and natural gas pipelines, as well as describes procedures for prevention, mitigation, detection, assessment, and repair. The forms of external corrosion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460227
EISBN: 978-1-62708-285-3
... trade study reported an annual cost for H-60 main gearbox corrosion of $10.8 million to the Navy and $6.7 million to the Army, for a total of approximately $17.5 million for 600 helicopters. Conventional repair processes such as welding, plating, or patching with composite material often either...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120065
EISBN: 978-1-62708-269-3
... its alloys is on wrought material that has been heat treated or otherwise thermomechanically processed. Cast alloy welding generally is done for purposes of casting repair (see Chapter 6) . Titanium has a strong chemical affinity for oxygen, and a stable...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090359
EISBN: 978-1-62708-266-2
... service, is shown in Fig. 16.1 . Various geometric properties of the weldment make detection of intergranular SCC difficult. The weld root and the counterbore could produce ultrasonic signals that might be confused with cracking. Additionally, the large weld crown (resulting from a weld repair) could...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290001
EISBN: 978-1-62708-306-5
.... Productrelated considerations include codes and standards, fitness for service, aesthetics, manufacturability, repairability, reliability, inspectability, safety, and unit cost of fabrication. Joining process considerations include material types and thicknesses, joint geometry, joint location and accessibility...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720411
EISBN: 978-1-62708-305-8
... are preferred over destructive inspection methods. Sections can be trepanned from a joint to determine its integrity; however, the joint must be refilled, and there is no certainty that discontinuities would not be introduced during repair. Destructive inspection is usually impractical, because of the...