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flash welding
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Image
Published: 01 November 2011
Fig. 3.9 Weld produced when using the flash welding process: (a) workpieces securely clamped in current-carrying dies before upsetting operation is initiated; (b) finished weld produced after upsetting operation. Source: Ref 3.4
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Image
Published: 01 November 2011
Image
Published: 01 January 2015
Fig. 12.10 Transformer capacity as a function of weld area in flash welding titanium and other materials
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Image
Published: 01 July 1997
Fig. 4 A failed flash-welded joint in a 300M steel arresting-hook stinger. Light-colored radial manganese sulfide inclusions are evident. 0.5x
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Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290061
EISBN: 978-1-62708-306-5
..., namely resistance spot welding, resistance seam welding, projection welding, flash welding, and upset welding. flash welding projection welding resistance seam welding resistance spot welding upset welding RESISTANCE WELDING is a group of processes in which the heat for welding...
Abstract
Resistance welding is a group of processes in which the heat for welding is generated by the resistance to the flow of an electrical current through the parts being joined. This chapter discusses the processes, advantages, and limitations of specific resistance welding processes, namely resistance spot welding, resistance seam welding, projection welding, flash welding, and upset welding.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930197
EISBN: 978-1-62708-359-1
... of service failures. The discussion covers various factors that may lead to the failure of arc welds, electroslag welds, electrogas welds, resistance welds, flash welds, upset butt welds, friction welds, electron beam welds, and laser beam welds. corrosion deformation fracture inspection mechanical...
Abstract
Weldment failures may be divided into two classes: those identified during inspection and mechanical testing and those discovered in service. Failures in service arise from fracture, wear, corrosion, or deformation. In this article, major attention is directed toward the analysis of service failures. The discussion covers various factors that may lead to the failure of arc welds, electroslag welds, electrogas welds, resistance welds, flash welds, upset butt welds, friction welds, electron beam welds, and laser beam welds.
Image
Published: 01 January 2015
Fig. 12.11 Maximum machine upset pressure required as a function of weld area in flash welding. The upset pressure capacity required for titanium is much less than for stainless and high-strength, low-alloy steels.
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Image
Published: 01 January 2015
Fig. 12.9 Comparison of total metal allowance as a function of stock thickness in flash welding titanium and steel. Allowances include metal loss in the flashing and upsetting operations.
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Image
Published: 01 November 2011
Fig. 3.10 Cross-sectional view of typical peaks and flow lines generated in a flash weld. Source: Ref 3.4
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Image
Published: 01 December 1984
Figure 1-25 Macroetching (solution consisting of 1.5 mL HF, 15 mL HNO 3 , and 80 mL H 2 O) was used to reveal the macrostructure of this titanium flash weld. The extent of the metal extruded from the joint and the grain refinement in the junction is clearly revealed. (Courtesy of R. D
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Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480265
EISBN: 978-1-62708-318-8
... special techniques to shield weld Gas metal arc Requires special techniques to shield weld Plasma arc Must use inert gas Electron beam Hard vacuum excellent Resistance spot and seam Excellent Flash Excellent Diffusion Excellent Pressure Excellent Friction stir welding...
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. It describes several welding processes, including arc welding, resistance welding, and friction stir welding, and addresses related issues such as welding defects, quality control, and stress relieving. The chapter also covers mechanical fastening techniques along with adhesive bonding and brazing.
Image
Published: 01 August 1999
Fig. 11.8 (Part 1) Electric-resistance flash butt weld. 0.1% C (0.12C-0.20Si-0.45Mn, wt%). (a) Weld region. 5% nital. 3×. (b) Weld region. Arrow indicates approximate position of the weld interface. 3% nital. 250×. (c) Fully austenitized zone immediately adjacent to weld. 3% nital. 250
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Image
Published: 01 August 1999
Fig. 11.9 Electric-resistance flash butt weld regions, showing oxygen enrichment at the weld plane. 0.1% C (0.12C-0.20Si-0.45Mn, wt%). (a) Satisfactory weld. Alkaline chromate. 100×. (b) Satisfactory weld. Picral. A, 100×. B, 500×. (c) Defective weld. Alkaline chromate. 100×. (d) Defective
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Image
in Structural Steels and Steels for Pressure Vessels, Piping, and Boilers
> Metallography of Steels: Interpretation of Structure and the Effects of Processing
Published: 01 August 2018
to the weld and to the bars. Fusion zone, flash protruding out of the weld, and heat-affected zones in both bars. (c) From left to right, acicular martensite, ferrite, and partially spheroidized pearlite and base material not affected by the thermal cycle. Courtesy of ArcelorMittal Aços Longos, Juiz de Fora
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Image
in Structural Steels and Steels for Pressure Vessels, Piping, and Boilers
> Metallography of Steels: Interpretation of Structure and the Effects of Processing
Published: 01 August 2018
and longitudinal section in the bottom rebar. Fusion zone, flash protruding out of the weld, and the heat-affected zones can be seen in both bars. (c) Region marked as “L” in (b). Longitudinal cross section of the bottom bar. Deformed ferrite and pearlite. (d) Fusion zone, acicular microstructure. (e) Region
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Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560309
EISBN: 978-1-62708-291-4
... weld. The probability of the weld surfaces being decarburized or internally oxidized during heating for welding, and of layers of this nature being incorporated in the weld, is also reduced. A considerable flash forms at the weld plane ( Fig. 11.5 ), although this flash usually is removed before use...
Abstract
This chapter examines the effects of welding on the structure of metal, particularly the changes induced in the isothermal regions adjacent to the weld. It presents more than 150 images identifying structures and features associated with fusion and solid-state welding processes, including electroslag, TIG, gas, electron-beam, and arc welding as well as vacuum diffusion, forge, friction, electrical-resistance, and explosive welding. It also discusses the effect of welding temperature, pressure, and composition on the transformations that occur in and around the weld, and it includes a short section on brazing and braze welding.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120065
EISBN: 978-1-62708-269-3
... Abstract This chapter covers the welding characteristics of titanium along with the factors that determine which welding method is most appropriate for a given application. It discusses the joinability of titanium alloys, the effect of heat on microstructure, the cause of various defects...
Abstract
This chapter covers the welding characteristics of titanium along with the factors that determine which welding method is most appropriate for a given application. It discusses the joinability of titanium alloys, the effect of heat on microstructure, the cause of various defects, and the need for contaminant-free surfaces and atmospheres. It describes common forms of fusion, arc, and solid-state welding along with the use of filler metals, shielding gases, and stress-relief treatments. It also discusses the practice of titanium brazing and the role of filler metals.
Book Chapter
Book: Corrosion of Weldments
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820169
EISBN: 978-1-62708-339-3
... metals as steel, stainless steel, and copper. These are made by rolling, explosion welding, friction welding, flash welding, or hot pressure welding and provide the easiest method for fusion welding aluminum to other metals. Conventional GTAW and GMAW methods, as well as resistance spot welding, are used...
Abstract
Many factors must be considered when welding dissimilar metals, and adequate procedures for the various metals and sizes of interest for a specific application must be developed and qualified. Most combinations of dissimilar metals can be joined by solid-state welding (diffusion welding, explosion welding, friction welding, or ultrasonic welding), brazing, or soldering where alloying between the metals is normally insignificant. This chapter describes the factors influencing joint integrity and discusses the corrosion behavior of dissimilar metal weldments.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280203
EISBN: 978-1-62708-267-9
..., or a retardant to further oxidation. However, other functional requirements can necessitate the removal of tarnish from parts. Tarnish should always be removed before welding or brazing. Oxide and/or Scale Oxide and scale are synonymous in some respects. The essence of superalloys...
Abstract
Superalloys are susceptible to damage from a variety of surface contaminants. They may also require special surface finishes for subsequent processing steps such as coating applications. This chapter describes some of the cleaning and finishing procedures that have been developed for superalloys and how they work. It discusses the effect of metallic contaminants, tarnish, oxide, and scale and how they can be detected and removed. It also discusses chemical and mechanical surface finishing techniques and where they are used, and presents several application examples.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930365
EISBN: 978-1-62708-359-1
..., 302) … … … … Arc welding not recommended. Flash welding possible. Austenitic stainless steel types: 303, 304 L, 304, 305, 309, 310, 314, 316, 321, 347 Not recommended 950–1150 If undertaken—or stress relieve below 650 °C (to avoid weld decay). Excellent weldability. Filler materials...
Abstract
This appendix provides reference tables listing weldability of cast irons, steels, and nonferrous metals. A process selection table for arc welding carbon steels is included, and recommended preheat and interpass temperature tables are also presented. This appendix includes information on qualification codes and standards.
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