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Full-Text Articles in Social and Behavioral Sciences
Investigation Into Feasibility Of Hybrid Laser-Gmaw Process For Welding High Strength Quenched And Tempered Steel, Lenka Kuzmikova, Nathan Larkin, Zengxi Pan, Mark Callaghan, Huijun Li, John Norrish
Investigation Into Feasibility Of Hybrid Laser-Gmaw Process For Welding High Strength Quenched And Tempered Steel, Lenka Kuzmikova, Nathan Larkin, Zengxi Pan, Mark Callaghan, Huijun Li, John Norrish
Faculty of Engineering and Information Sciences - Papers: Part A
In this study, the feasibility of hybrid laser-gas metal arc welding process for replacement of conventional flux-cored arc welding procedure for welding high strength quenched and tempered steel was investigated. Experimental work focused on optimisation of process parameters to produce joint with desired properties. Hardness of the weld heat affected zone produced by both processes has been measured. Productivity and cost effectiveness of both processes were compared. It was concluded that hybrid laser-gas metal arc welding process is suitable for welding high strength quenched and tempered steel.
Optimization Of Welding Parameters For Repairing Nial Bronze Components, Huijun Li, Daniel Grudgings, Nathan P. Larkin, John Norrish, Mark Callaghan, Lenka Kuzmikova
Optimization Of Welding Parameters For Repairing Nial Bronze Components, Huijun Li, Daniel Grudgings, Nathan P. Larkin, John Norrish, Mark Callaghan, Lenka Kuzmikova
Faculty of Engineering and Information Sciences - Papers: Part A
The objective of this study is to determine an optimal welding procedure that can be implemented to repair damaged Nickel Aluminium Bronze (NAB) components. NAB is commonly used in marine applications where components are subject to a constant corrosive environment and high stresses. Research into ideal NAB microstructure for a marine application, was performed in order to gain a baseline for experimental analysis of potential welding procedures. The results indicated that the welding repair can be performed with a wide range of heat input. The effect of post-weld heat treatment (PWHT) on the microstructure and mechanical properties in the heat …
Investigation On Welding Arc Interruptions In The Presence Of Magnetic Fields: Arc Length, Torch Angle And Current Pulsing Frequency Influence, Ruham Pablo Reis, Americo Scotti, John Norrish, Dominic Cuiuri
Investigation On Welding Arc Interruptions In The Presence Of Magnetic Fields: Arc Length, Torch Angle And Current Pulsing Frequency Influence, Ruham Pablo Reis, Americo Scotti, John Norrish, Dominic Cuiuri
Faculty of Engineering and Information Sciences - Papers: Part A
Arc interruptions have been observed in tandem pulsed gas metal arc welding (GMAW). This fact, which is likely related to magnetic interaction between the arcs, motivated previous study concerning the influence of the welding current on this phenomenon. In order to promote further understanding, this paper investigates the effects of arc length, torch angle, and high-frequency current pulsing on the arc resistance to extinction. To mimic the situation found in tandem GMAW (magnetic field induced by one arc acting on the other arc), external magnetic fields were applied to gas tungsten arc welding arcs. It was verified that short arc …
Bonding Of Mg-Base Metallic Glass Through Rapid Resistive Welding, Karl F. Shamlaye, Kevin J. Laws, Bob De Jong, Michael Ferry
Bonding Of Mg-Base Metallic Glass Through Rapid Resistive Welding, Karl F. Shamlaye, Kevin J. Laws, Bob De Jong, Michael Ferry
Faculty of Engineering and Information Sciences - Papers: Part A
Efficient joining of Magnesium-base bulk metallic glass can be achieved via bonding through resistance welding using rapid heating rates. Bonding of Mg-base metallic glasses (as well as regular magnesium alloys) is a process hindered by the ease of oxide formation in these materials. In this work, resistance welding of Mg65Cu25Y10 metallic glass sheets was investigated up to 627 K , below the liquidus temperature; and also within the supercooled liquid region (443-483 K) of the metallic glass; during processing times of a few seconds, creating strong joins -even when processed in air. It is seen that a fluxing pre-treatment of …