Arc pressure and weld metal fluid flow whilst using alternating shielding gases Part 2 : arc force determination [PDF]
, 2013 The transient variation of the shielding gas present in the alternating shielding gas process produces a dynamic action within the liquid weld metal. Flow vectors opposite in direction have been reported due to the various forces acting on the weld metal
Campbell, Stuart +2 more
core +4 more sources
Hydrogen distribution and redistribution in the weld zone of constructional steels [PDF]
, 1999 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The invention of electric arc welding revolutionized the steel construction industry, but also brought some problems when the welded region has inferior ...
Smith, Richard Dominic
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An evaluation of weld metal nitrogen retention and properties in 316NL austenitic stainless steel [PDF]
, 2011 A series of tests were conducted using varying levels of nitrogen and helium in a conventional argon shielding gas when welding 316LN austenitic stainless steel. The outcome was that a 15 per cent nitrogen addition to the argon shielding gas had the most
Baker, Thomas +2 more
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Process monitoring and adaptive quality control for robotic gas metal arc welding [PDF]
, 1995 The aim of this research was to develop an adaptive quality control strategy for robotic gas metal arc welding of thin steel sheets. Statistical methods were used to monitor and control the quality of welds produced.
Ogunbiyi, T. E. B.
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High-Speed GMAW and Laser GMAW Hybrid Welding of Steel Sheet [PDF]
, 2009 Arc welding is the most widely used set of joining technologies in industry today. The automotive tier supplier network and light manufacturing are significant users of arc welding, particularly gas metal arc welding (GMAW) and pulsed GMAW (GMAW-P ...
Harris, I. D.
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Derivation of forces acting on the liquid weld metal based on arc pressure measurements produced using alternating shielding gases in the GTAW process [PDF]
, 2013 As part of an ongoing process to fully evaluate the effects of an alternating shielding gas supply on the gas tungsten arc and gas metal arc welding processes, a comparison between arc pressures produced using argon, helium, alternating gases and GTAW-P ...
Campbell, Stuart +2 more
core +3 more sources
Effect of Heat Input on Microstructure and Corrosion Behavior of High Strength Low Alloy Steel Welds
International Journal of Electrochemical Science, 2021 High strength low alloy (HSLA) steel was welded by metal active gas arc welding (MAG), and the effect of heat input on microstructure and corrosion behavior of HSLA welds was investigated by optical microscope (OM), scanning electron microscopy (SEM ...
Hua Qin, Yingchun Tang, Ping Liang
doaj +1 more source
Microstructure Characterization of SAW and TIG Welded 25Cr2Ni2MoV Rotor Steel Metal
Metals, 2020 Low pressure turbine rotors are manufactured by welding thick sections of 25Cr2Ni2MoV rotor steel using tungsten inert gas (TIG) backing weld, and submerged arc welding (SAW) filling weld.
Chaoyu Han +5 more
doaj +1 more source
Nanomodification is an effective methodfor forming the structure of the weld metal. Part II. [PDF]
Нанотехнологии в строительстве, 2020 The short-term existence of the melt in the weld pool and its overheating, a large temperature gradient near the interface and two-dimensional crystallization centers, in the form of fused grains at the weld pool boundary, reduce the probability and rate
Sizintsev Sergey Valerievich +3 more
doaj +1 more source
Metals, 2020 Dissimilar metal welds (DMWs) are a key design feature in nuclear power systems, typically involving ferritic low-alloy steels (LAS), stainless steels (SS), and nickel-base alloys. They are, however, a potential concern regarding the structural integrity
Matias Ahonen +7 more
doaj +1 more source