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gas tungsten arc welding

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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
... welding, gas metal arc welding, gas tungsten arc welding, plasma arc welding, plasma-GMAW welding, electroslag welding, and electrogas welding. The basic characteristics of gases used for shielding during arc welding are briefly discussed. electrogas welding electroslag welding flux cored arc...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030096
EISBN: 978-1-62708-282-2
... austenitic stainless steels as well as several forms of corrosion associated with welding. The effects of gas-tungsten arc weld shielding gas composition and heat-tint oxides on corrosion resistance are then covered. Microbiological corrosion of butt welds in water tanks is also illustrated. In addition, the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290079
EISBN: 978-1-62708-306-5
... penetrate into the workpiece on which they are impinging causes the weld-seam interface surfaces to melt and produces the weld-joint coalescence. Electron beam welding is used to weld any metal that can be arc welded. The weld quality in most metals is equal to or superior to that produced by gas tungsten...
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
..., 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...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310201
EISBN: 978-1-62708-286-0
... Argon + 3% N 2 no 150 °C None or full anneal 2507 superduplex 25Cr-10Ni-4Mo-N 5–25 Argon + 3% N 2 no 150 °C None or full anneal PH, precipitation hardenable Gas tungsten arc welding (GTAW)/tungsten inert gas (TIG) is commonly used for the automated production of stainless steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290099
EISBN: 978-1-62708-306-5
... welding speed variations on weld grain structure in gas tungsten arc welding (GTAW): (a) low heat input and low welding speed, producing an elliptical weld pool; (b) high heat input and high welding speed, producing a tear-drop shaped weld pool-Here, the heat input and welding speed are not yet sufficient...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230401
EISBN: 978-1-62708-298-3
..., beryllium surfaces can be joined to each other using silver solder [ Jacobson 1986 ]. Beryllium has been successfully welded by several processes, including gas tungsten arc and electron beam welding. The welding operations should be designed to minimize heat input, thermal stresses, grain growth, and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480265
EISBN: 978-1-62708-318-8
... assemblies include gas tungsten arc welding (also known as tungsten inert welding); gas metal arc welding; plasma arc welding; electron beam welding; resistance (spot and seam) welding; flash, diffusion, and pressure welding; and friction stir welding ( Ref 12.1 – 12.13 , 12.18 – 12.21 ). Of these processes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120065
EISBN: 978-1-62708-269-3
... cleaning of the workpiece and consumable and adequate gas shielding to prevent atmospheric contamination. Titanium and most titanium alloys can be welded by the following fusion welding techniques: Gas-tungsten arc welding (GTAW) Gas-metal arc welding (GMAW) Plasma arc welding (PAW...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480161
EISBN: 978-1-62708-318-8
... welded together by consumable arc or plasma electrode methods. All welds must be well shielded or made in an inert gas chamber to avoid contamination and formation of refractory oxides and nitrides. Tungsten-tipped electrodes can contribute refractory inclusions and must not be used. Block density...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240583
EISBN: 978-1-62708-251-8
... include additions of rhenium. Tungsten-thoria alloys have traditionally been used for gas tungsten arc welding electrodes but have fallen from favor somewhat due to their radioactive properties. However, arc welding electrodes of tungsten alloyed with ceria (W-2CeO 2 ), zirconia (W-0.25ZrO 2 ), and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170308
EISBN: 978-1-62708-297-6
..., cold working lowers the DBTT to below room temperature. Tungsten and tungsten mill products are produced primarily by P/M techniques. Tungsten sheet has also been produced by chemical vapor deposition (CVD). Tungsten and tungsten alloys may also be produced by arc casting and electron beam melting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280149
EISBN: 978-1-62708-267-9
.... Postweld heat treatment of precipitation-hardened alloys generally includes a re-solution treatment and an aging treatment. Superalloys can be welded by the following fusion welding techniques: Gas tungsten arc welding (GTAW) Gas metal arc welding (GMAW) Shielded metal arc welding (SMAW...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610263
EISBN: 978-1-62708-303-4
... geometry by removing the intrusions and, at the same time, achieving a smooth transition between the weld and the plate. Typical profiles of burr-ground and gas tungsten arc welding (GTAW)-dressed welds are illustrated in Fig. 25 . Because weld toe intrusions can be up to 0.4 mm (0.016 in.) in depth, the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740001
EISBN: 978-1-62708-308-9
... induction or electric arc furnace, sometimes under vacuum. To refine stainless steel, the argon oxygen decarburization (AOD) process is used. In AOD, an argon-oxygen gas mixture is injected through the molten steel to remove carbon without a substantial loss of chromium, the main alloying element in...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290279
EISBN: 978-1-62708-306-5
... metals. The three most popular arc welding processes utilized for joining dissimilar metals are shielded metal arc welding (SMAW), gas metal arc welding (GMAW), and gas tungsten arc welding (GTAW). Selecting the welding process to make a given dissimilar-metal joint is almost as important as...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240395
EISBN: 978-1-62708-251-8
... loss of hardness of the hard-facing alloy. The absence of a steep thermal gradient in oxyacetylene welding reduces cracking or spalling because thermal stresses are reduced. Arc welding overlays are applied by gas tungsten arc welding (GTAW), shielded metal arc welding (SMAW), and gas metal arc welding...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280117
EISBN: 978-1-62708-267-9
... Rotating disk; forced helium convective cooling (a) VIM, vacuum induction melting. (b) VAR, vacuum arc remelting; ESR, electroslag remelting. (c) RSR, rapid solidification rate The principal commercial powder-making processes are gas atomization and vacuum atomization. The most...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080005
EISBN: 978-1-62708-304-1
... Abstract Many metallic components, such as retorts in heat treat furnaces, furnace heater tubes and coils in chemical and petrochemical plants, waterwalls and reheater tubes in boilers, and combustors and transition ducts in gas turbines, are subject to oxidation. This chapter explains how...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240349
EISBN: 978-1-62708-251-8
... scrap, this process is used where local supplies of steel scrap are available and has given rise to what are known as “mini” mills. The electric arc furnace is also used for producing alloy steels that contain appreciable amounts of easily oxidized alloying elements, such as chromium, tungsten, and...