A REVIEW OF METAL INERT GAS WELDING ON ALUMINIUM ALLOYS

Journal of emerging technologies and innovative research, 2018

Tungsten Inert Gas (TIG) welding is one of the extensively used joining process of aluminium alloy. This process is popular because it gives good weld bead and less metallurgical changes in the outside of HAZ to achieve the good mechanical properties in comparison to other arc welding process. The weld joint accuracy and quality mainly depended on the process parameter like welding speed, current, voltage, gas flow rate etc. This paper focused on process parameter of TIG welding i.e. (travel speed, and current) and other parameters have been kept constant throughout the study and enhancement of mechanical properties of weld joint and optimization of the process parameter. The present work describes the effect of a process parameter of TIG welding in respect of mechanical properties i.e. Ultimate tensile strength of weld joint and hardness of weld bead of AA5052 H32 aluminium alloy, for joining of aluminium plate, filler material AA4043 (Al-5Si (wt. %)) have been used. Keyword— TIG W...

E3S web of conferences, 2023

The review focused on the applications of tungsten inert gas a (TIG) metal inert gas (MIG) welding processes. Each of the welding process was critical studied to understand the operations and the need to maintain safety and reliable weld with adequate mechanical properties. In addition, the various applications in the aerospace, aeronautic, automotive and food packaging industries were critically highlighted. However, there potentials as well as problems highlighted have been critically reviewed and reported especially porosity which usually result into hole defects at the weld joint as well as plastic deformation due to the frictional heat induced have been reported in this study. Furthermore, the study further recommended friction stir processes integrated with TIG/MIG welding as an alternative method that will solve the problems associated with fatigue behaviour of welded joint. Thus, the study provided potential information to all stakeholders especially the professional welders on the need-to-know which method is applicable to aluminium alloy welding

Materials Today: Proceedings, 2018

This research article exhibits experimental and numerical results of TIG welding of AA6061. TIG welding process parameters like gas flow rate, welding current and welding speed was optimized using the Taguchi technique for joining AA6061 plates. The combinations of parameters were carefully selected with the objective of producing weld joint with maximum impact strength. Experimental tests were performed with four levels of parameters according to L 16 orthogonal array. Signal-to-noise (SN) ratio and ANOVA were used to evaluate the experimental results. The results indicate that the gas flow rate is the significant parameter on impact strength of weld joints, followed by welding speed and welding current.

The purpose of this research is to study the behavior of AISI 316L steel during the Metal Inert Gas (MIG) welding process. Three welding parameters are adjusted at three levels of voltage, wire feed, and shielding gas combination (6V, 8V, 10V), (3, 3.5, 4), and (G4, G5, G6). The welding properties are investigated by tensile test strength and Charpy impact test. Ordering parameters are performed based on Taguchi's orthogonal array (L9). The data was analyzed using an analysis of variance (ANOVA) and signal-to-noise (S/N) to determine the optimal welding parameter sets. According to the results of this study, the most influential welding parameter is the gas combination on tensile strength; followed by voltage, wire feed, and gas combination (10V, 3.5, G4). The most influential parameter on maximum elongation is shielding gas. The welding parameter sets the voltage, wire feed, and gas combination (10V, 3.5, G4). The voltage has the most influential parameter on toughness. The wel...

THE 4TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, HEALTH, AND MEDICAL DEVICES: Proceedings of the International Symposium of Biomedical Engineering (ISBE) 2019

Using advantages properties of metals to gate an advantages product as objective in manufacturing industries. Dissimilar welding is a height light research issues. Thermal properties of every metal were difference. It is still as problem in the welding process. This study discussed dissimilar welding join between SS 304 and ST37 steel with wire steel as filler welded by Metal Inert Gas (MIG). Dissimilar welding joint could be produce with MIG weld technology however some weld parameters fail because of growing holes in weld pool. Failure weld joints used some welding parameters combination such as welding current 1.5 ampere with 27.5 m/mint, welding current 2 ampere with 25 m/mint, and 2.5 ampere with 27.5 m/mint. The highest peaks load of tensile tested could be achieved around 2.9 kN with welding parameter combination 2.5 ampere with 22.5 m/mint of wire speed. The lowest peaks load could be joined with welding current 2 Ampere and 22.5 m/mint. Fractures on dissimilar weld joint was on ST37 steel side, and 1 specimen a weld joint fracture on weld pool when welded used 1.5 Ampere and 22.5 m/mint as specimen 7 a.

International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2022

Among the different industrial processes, Metal Inert Gas Welding is amongst the most basic and widely employed fabrication methods. Tensile strength, yield strength, and elongation are all desirable physical qualities in welded components. Because of their great strength, formability, and low density, aluminium alloy and steel sheet are generally utilized for complex parts. These disparate materials, on the other hand, are difficult to weld together. This occurs as a result of the materials' dissimilar and disparate physical properties.

The aim of our work is to study the hardness that affects the welding joint of dissimilar metals and what are the parameters that attects the welding strength of dissimilar metals. Stainless Steel 304 was welded to mild steel using a metal inert gas welding which also known as gas metal arc is welding with the help of filler wire of stainless steel and also by electric arc welding. Argon gas was used as shielding gas in this process. Dissimilar metals welding have great scope in advanced technology nowadays owing to their high hardness, high strength and corrosion resistance properties. The welding voltage had a significant effect on the welding process, as higher voltage resulted in poorer appearance of the weld joint and led to defects for both type of samples, such as porosity and incomplete fusion. The hardness values of the welded seams in all the samples range from 249 to 292 HV in Vickers hardness and 29 to 37 HV in Rockwell hardness test, respectively. The fracture in the tensile test yielded the highest tensile strength of 489.1MPa for MIG welded specimen with ER304. The tensile strength of MIG Welded test sample has higher range of tensile strength than electric arc welded specimen. Based on the investigation throughout this study, it can be concluded that the welding voltage had a significant effect on the welding process.

Gas Metal Arc Welding (GMAW) process is leading in the development in arc welding process which is higher productivity and good in quality. In this study, the effects of different parameters on welding penetration, microstructural and hardness measurement in mild steel that having the 6mm thickness of base metal by using the robotic gas metal arc welding are investigated. The variables that choose in this study are arc voltage, welding current and welding speed. The arc voltage and welding current were chosen as 22, 26 and 30 V and 90, 150 and 210 A respectively. The welding speed was chosen as 20, 40 and 60 cm/min. The penetration, microstructure and hardness were measured for each specimen after the welding process and the effect of it was studied. As a result, it obvious that increasing the parameters value of welding current increased the value of depth of penetration. Other than that, arc voltage and welding speed is another factor that influenced the value of depth of penetration. The microstructure shown the different grain boundaries of each parameters that affected of the welding parameters. Nomenclature u velocity in the direction of (m/s) A radius of (m) B position of C further nomenclature continues down the page inside the text box Greek symbols stoichiometric coefficient boundary layer thicknesses(m) Subscripts r radial coordinate 1.0 Introduction Welding techniques back in the recently years, the GMAW process leading in the development in arc welding process which is higher productivity and good in quality. A Metal Inert Gas (MIG) also called GMAW is the process that included of heating, melting and solidification of parents metals and a filler (wire electrode) material in restricted fusion zone by transient heat source to form a joint between the parents metals [2]. The continuous wire electrode from an automatic wire feeder and fed through the contact tip inside the welding torch is melted by the internal resistive power and heat transferred from the welding arc. Heat determined from the end of the melting electrode to molten weld pools and by

SAE Technical Paper Series, 2006

Welding parameters play a great significant role in determining the weld joint quality in terms of weld-bead geometry. To obtain a good quality weld, it is necessary to select the proper welding parameters. This study focuses on the optimization parameters for Metal Inert Gas (MIG) welding on AISI 1018 mild steel by Teaching-Learning Based Optimization (TLBO) algorithm. The input parameters considered are welding current, workpiece thickness, voltage and wire feed rate. Taguchi's L 27 orthogonal array have been used for design of experiment (DoE) and the mathematical models have been developed for output response using MINITAB16. Results show that welding current and voltage are statistical significance on overall MIG welding performance.

EXPERIMENTAL INVESTIGATION OF THE EFFECT OF WELDING PARAMETERS FOR METAL INERT GAS WELDING ON MILD STEEL, 2023

ABSTRACT A good quality of welding focused had been required, when joining two pieces of metals were processed. The changing chemical, physical and thermal properties in order to made joint bond robust and rigid. The problem MIG welding on mild steel improved by controlling process welding parameters such as welding current, voltage, standoff distance and arc speed. The goal of this study was to see how significantly metal inert gas (MIG) welding process parameters affected mechanical properties of A36 mild steel. Method had been used Mathematical model parameters, OA, S/N- ratio, ANOVA, 95% confidence intervals level, Regression analysis for 16 sample. The result had been investigated optimal parameters S/N ratio current 31.37%, arc voltage 18.66%, travel speed 30% and standoff distance 19.97% used S/N ratio. For ANOVA 25% contribution for each factor and regression analysis maximum predicted tensile stress was 288.9MPa, minimum percent improvement for tensile stress was 2.87% maximum value of percent improvement. The percent difference was from 250MPa original material TS and regression analysis of process parameter optimum values combinations were 115, 27.5, 21.125, and 13 for current, voltage, travel speed and standoff distance respectively it was a better hardness and tensile strength. Confirmation tests were also carried out by the welded product tested on UVT machine for design of experiment after optimum parameter determination through destructive testing to proposed optimum parameter settings. The finding of this research work was optimal use of process parameters on weld bed products had been improved tensile stress was widely applicable and valuable in manufacturing industries. S/N ratio voltage was first, current second, travel speed third and standoff distance were the fourth contribution. Keywords: - ANOVA, Design of Experiment, Destructive Test, Metal Inert Gas, Regressions.