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gas tungsten arc welding

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Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003817
EISBN: 978-1-62708-183-2
... environmental cracking resistance of the cobalt alloys. Three welding processes that are used for hardfacing with the high-carbon Co-Cr-W alloys, namely, oxyacetylene, gas tungsten arc, and plasma-transferred arc are also discussed. The article examines the effects of various modes of high-temperature corrosion...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003206
EISBN: 978-1-62708-199-3
... Abstract Arc welding methods can be classified into shielded metal arc welding, flux-cored arc welding, submerged arc welding, gas metal arc welding, gas tungsten arc welding, plasma arc welding, plasma-metal inert gas (MIG) welding, and electroslag and electrogas welding. This article provides...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003208
EISBN: 978-1-62708-199-3
... welded; weld quality in most metals is equal to or superior to that produced by gas tungsten arc welding (GTAW). Because the total kinetic energy of the electrons can be concentrated onto a small area on the workpiece, power densities as high as 10 8 W/cm 2 (10 7 W/in. 2 ) can be achieved. That is...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006663
EISBN: 978-1-62708-213-6
... Abstract Gas analysis by mass spectrometry, or gas mass spectrometry, is a general technique using a family of instrumentation that creates a charged ion from a gas phase chemical species and measures the mass-to-charge ratio. This article covers gas analysis applications that do not use...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.9781627081733
EISBN: 978-1-62708-173-3
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.9781627081740
EISBN: 978-1-62708-174-0
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005345
EISBN: 978-1-62708-187-0
... is usually limited to use on thin sections. Generally, any material that can be welded using the oxyfuel (OFW) or arc fusion processes can also be repaired using these processes. The more widely used arc fusion processes include shielded metal arc welding (SMAW), gas metal arc welding (GMAW), gas...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003166
EISBN: 978-1-62708-199-3
... filaments, high-current electrical contacts, and electrodes for arc lamps and tungsten inert gas welding (also called gas tungsten arc welding, or GTAW). While pure tungsten can be used for all these cited applications, optimum performance is generally realized in doped, alloyed, or composited forms...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006255
EISBN: 978-1-62708-169-6
... sometimes used to anneal large molybdenum and tungsten workpieces that may not fit available hydrogen furnaces. Both niobium and tantalum form hydrides, so they are typically annealed in high-vacuum (pressure less than 13.3 mPa, or 0.0001 mbar) or high-purity inert gas. Rhenium can be annealed in either...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001313
EISBN: 978-1-62708-170-2
... (150 °F), with a current density of 5 to 11 A/dm 2 (50 to 110 A/ft 2 ). The nickel-coated tungsten, after heating under vacuum at 450 to 750 °C (840 to 1380 °F) until gas evolution ceases, is cleaned and activated by strike plating in a Wood's nickel bath and then plated as desired. Recent...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003157
EISBN: 978-1-62708-199-3
... would be high enough to limit arc erosion, metal transfer, and welding or sticking, but it would also be low enough to increase resistance to reignition in switching. (When the melting point is high, contacts continue to heat gas in the contact gap after the current drops to zero, thus facilitating...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003205
EISBN: 978-1-62708-199-3
... Flux-cored arc welding Gas tungsten arc welding Plasma arc welding Electroslag welding Electrogas welding Resistance welding Flash welding Oxyfuel welding Diffusion welding Friction welding Electron beam welding Laser beam welding Torch brazing Furnace brazing Induction brazing...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001282
EISBN: 978-1-62708-170-2
... a tungsten cathode and a water-cooled copper anode. An electric arc is initiated between the two electrodes using a high-frequency discharge and then sustained using dc power. The arc ionizes the gas, creating a high-pressure gas plasma. The resulting increase in gas temperature, which may exceed...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003162
EISBN: 978-1-62708-199-3
...) Gas tungsten arc (GTA) Bare cast or tubular rod Gas metal arc (GMA) Tubular or solid wire Open arc Tubular wire (flux cored) Submerged arc Tubular or solid wire Plasma-transferred arc (PTA) Powder In choosing the process to be used, the following factors are important...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003151
EISBN: 978-1-62708-199-3
...-HfC, and W-Re-ThO 2 . The thoria dispersion enhances thermionic electron emission, which in turn improves the starting characteristics of gas tungsten arc welding electrodes. Also available are arc welding electrode materials consisting of tungsten alloyed with ceria (W-2CeO 2 ), zirconia (W...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005338
EISBN: 978-1-62708-187-0
... shrinkage voids. Unless a given casting is designed for use with these voids present, it will be necessary to remove them. Suitable excavation and weld repair then become necessary steps in the production of zirconium castings. Weld repair is performed using gas tungsten arc welding (GTAW). Welding can be...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001280
EISBN: 978-1-62708-170-2
... Molybdenum alloys 1040–1150 1900–2100 4–16 Tantalum alloys 1040–1150 1900–2100 4–12 Tungsten alloys 1040–1370 1900–2500 3–16 (a) Tolerances: ±6 °C (±10 °F) at 1040 °C (1900 °F);±14 °C (±25 °F) at 1260 °C (2300 °F). (b) Tolerance, ±10 min Table 12 Hardness of three ceramic...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004001
EISBN: 978-1-62708-185-6
... gamma aluminides with particular reference to production scaleable techniques, including vacuum arc and cold-hearth melting, isothermal forging, conventional hot forging, and extrusion. The selection and design of manufacturing methods, in the context of processing-cost trade-offs for gamma titanium...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003054
EISBN: 978-1-62708-200-6
... resistance, and other properties. This article discusses the fundamentals of sintering and its effects on pore structures and particle density. It addresses some of the more common sintering methods, including solid-state, liquid-phase, and gas pressure sintering, and presents alternative processes such as...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003116
EISBN: 978-1-62708-199-3
.... Other very commonly used processes for stainless steels are gas-tungsten arc welding (GTAW), gas-metal arc welding (GMAW), submerged arc welding (SAW), flux-cored arc welding (FCAW), and several forms of resistance welding. The plasma arc welding (PAW), laser-beam welding (LBW), and electron-beam...