TO INVESTIGATE THE AFFECT OF PROCESS PARAMETERS ON MECHANICAL PROPERTIES OF TIG WELDED 6351 ALUMINUM ALLOY BY ANOVA. (original) (raw)
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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...
Impact of TIG Welding Parameters on the Mechanical Properties of 6061-T6 Aluminum Alloy Joints
Advances in Science and Technology Research Journal
The most common gas-shielded arc welding method is tungsten inert gas welding, which uses shielding gas to isolate the welded area. Such technique is mostly used in the industrial domain, including steel framework fabrication and installation, plumbing systems, and other building jobs. The welding method and the implementation of a suitable welding joint based on some factors that contribute to the fusion process were studied in the present research. The research investigated the specifications and efficiency of the area to be welded in terms of the thermal effect on the welding joint shape and some significant mechanical property-related factors which that were determined during the welding process. In this paper, aluminum alloy sheets, AA 6061-T6, with a thickness of 3 mm, were used with a 60mm width and 80mm length. These sheets were prepared to be welded using welding currents of 90A, 95A, and 100A, welding speeds of 60mm/min, 80 mm/min, and100 mm/min, and gas flow rates of 8 l/ min, 9 l/min, and 10 l/min. The experiments were designed at three distinct levels. These levels were selected to create the L9 orthogonal array. Regression analysis, signal-to-noise ratio evaluation, and analysis of variance were carried out. The created model has enhanced accuracy by predicting the reinforced hardness found in the weld specimens, according to the regression study, which showed R2= 90.09%. In addition, it was discovered that the ideal welding parameters for a welded specimen were 100 A for welding current, 80 mm/min for welding speed, and 9 l/min for gas flow. The present research examined the shape of the thermal distribution of welded parts using the engineering computer program ANSYS. The experimental results clarified the proposed approach, as they showed that the welding current is the most influential factor in the hardness of the weld using the fusion process of 90.95%, followed by the welding speed of 7.48%, while the gas flow rate of 1.52% has the least effect. The authors recommend using qualified welders to ensure optimal performance. It is anticipated that these findings will serve as a foundation for analysis to optimize welding processes and reduce welding defects.
Optimization of Process Parameters by using TIG Welding on Aluminium Alloy 8011 Neetu
International Journal For Research In Applied Science & Engineering Technology, 2020
Aluminium alloys are applied in various industries because of their high strength to weight ratio. Aluminium Alloy 8011 is also lightweight, corrosion resistant and has high wettability. It is being currently used in various applications such as Storage tankers, Military equipment, high pressure containers, Air conditioning foil etc. The aim of this research is to study the effect of TIG welding using butt weld joint on microstructural and mechanical properties of Aluminium Alloy 8011. Here, we have designed an experiment using Bevel angle and welding current as variables in process parameters to study the tensile strength and hardness of weld joint of Aluminium alloy 8011. Gas flow rate, Electrode work piece distance, welding speed and welding voltage were kept constant. Then properties of samples were tested using Dye Test, Hardness test, Grain size analysis and Tensile Test. The results thus produced were then analyzed using Grey Relational analysis using Taguchi array.
Springer, Cham, 2019
Many welding processes are existent in the industry today. Stricter environmental regulations, increasing cost of power supply have made energy conservation, one of the top priorities for manufacturing industries. Selection of optimum welding parameters plays a crucial role in attaining sustainability in part manufacturing. Welding is an energy-intensive process, finding its application in different industrial operations. The stimulated growth and progress of society ensures ever-increasing demand for welding. The Tungsten Inert Gas (TIG) welding is an extensively practiced and highly energy-intensive operation. Numerous parameters play a crucial role in the achieved joint quality among which joint gap and welding current are the primary factors affecting the joint strength. The metal processing sector is a dominant energy consumer. A progressive step towards sustainability is highly dependent on the energy profile of welding processes. The current research centers around the identification of the most influential process parameter on energy efficiency and selection of most relevant welding parameters (joint gap and welding current) aiming at reduced energy cost without sacrificing the joint strength. The proposed methodology is implemented using a case study involving TIG welding for butt joint on aluminium 5182 alloy.
2013
This report is presents about the investigation towards mechanical properties property of dissimilar welding by using different welding technique and processes. The objective of this research is investigate the weld joint quality of aluminium AA6061 and galvanized iron with different types of joining those are butt and lap joint and with different of welding processes, namely Metal Inert Gas (MIG) and Tungsten Inert Gas (TIG). The experiments carried out along this research such as non-destructive test (NDT), Vickers hardness test, tensile test and microstructure optical analysis. Based on the result of experiment, there are a few defects on weld appearances such as porosity, crack, and incomplete penetration. Butt joint of TIG welding (TBAG) shows a better weld appearance compared to other groups. Microstructure analysis showed that joint of TBAG has thinner brittle intermetallic compound layer (IMC) than the other group which shows thicker IMC, indicating a weaker joint. Based on ...
Welding has wide applications in industry, so it is necessary to optimize the process parameters in order to achieve better results. In this study, effects of various welding parameters in Tungsten Inert Gas welding (TIG) of AA 6082 on tensile strength are investigated. The process parameters considered are current, filler material and shielding gas flow rate. Current is varied from 80 Amp to 120 Amp with increment of 20 Amp. A double side V butt weld joint is made with two different filler material AA 4043 and AA 4047. Argon is used as shielding gas with varied flow rate from 8 lpm to 12 lpm. The results show an average increase of 4.5% in tensile strength when current increases from 80 Amp to 120 Amp. Better results are observed with AA 4043 as compared to AA 4047.
Tungsten Inert Gas welding is the process in which heat is produced from an arc between the non-consumable tungsten electrode and the work piece. This paper deals with the study of Micro-structural and mechanical properties of the welded joints of the aluminum alloy AA-6061 welded by Tungsten Inert Gas(TIG) welding by using welding current as varying parameter. The filler wire used during the experiment of the grade as AA-4047 which has the more content of the silicon (11.0%-13.0%). Due to high content of silicon in the wire it will improve the fluidity during the welding operation. By this experiment we will examine the optimal value of the welding current. The welded specimens are to be investigated by using the optical microscopy, Vickers micro-hardness test and surface roughness testing. The optical microscopy test was used to characterize the micro-structure of the base metal and of the welded zone and the micro-hardness test was conducted to find the hardness of the welding zone and surface roughness test was conducted to check the roughness of the welded surface.
2009
The present work pertains to the improvement of mechanical properties of AA 5456 Aluminum alloy welds through pulsed tungsten inert gas (TIG) welding process. Taguchi method was employed to optimize the pulsed TIG welding process parameters of AA 5456 Aluminum alloy welds for increasing the mechanical properties. Regression models were developed. Analysis of variance was employed to check the adequacy of the developed models. The effect of planishing on mechanical properties was also studied and observed that there was improvement in mechanical properties. Microstructures of all the welds were studied and correlated with the mechanical properties.
Mapta Journal of Mechanical and Industrial Engineering (MJMIE), 2020
The 5083 aluminium alloy is one of the alloys of the 5xxx series that is widely used in defence and shipbuilding industries. In this study, the 5083 aluminium alloy plates were evaluated through two friction stir welding and tungsten inert gas welding (TIG) by a double groove weld with a 30° angle and a 2mm gap for TIG and a simple butt weld for FSW. In this study and in addition to examining the samples' mechanical properties, the microstructure changes and the hardness were also reviewed. The results show that the FSW weld has better mechanical properties than the TIG weld due to fast welding speed. However, by preparing the pieces, the mechanical properties of TIG get closer to those of FSW. In the FSW welding in the weld nugget, the grains have a fine and co-axial structure, and an increase in the advance rate will reduce the inlet heat and make the grains smaller. Nevertheless, in TIG welding at high speeds, the grains become more extensive with increased inlet heat.