Effect of MIG Welding Parameters on the Mechanical Properties of AISI 304 Austenitic Stainless Steels (original) (raw)
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Nigerian Journal of Technology, 2017
The purpose of the present study is to investigate the effects of metal inert gas (MIG) welding parameters on the mechanical properties (hardness, tensile and impact) of type 304 austenitic stainless steel (ASS) immersed in 0.5M hydrochloric acid at ambient temperature. The MIG welding was applied to 3mm thick ASS. The dimensions of the samples were 50mm x 15mm x 3mm and 120mm x 15mm x 3mm rectangular bars each for impact, hardness and tensile tests and for immersion in the medium. Design Expert Software, Scanning Electron Microscopy (SEM), Rockwell Hardness Test, Monsanto Tensometer and Izod Impact Test were used to determine the interactions of parameters, microstructural analysis and optimal performances of the parameters respectively. Experimental results indicate that tensile strength increased with increase in welding parameters from 120MN/m2 to 133MN/m2 at speed of 40cm/min and current of 110. when the properties are compared with varying weld parameters adopted in joint’s ...
Strojnícky casopis – Journal of Mechanical Engineering
Weld quality mainly depends on the weld bead geometry and mechanical-metallurgical characteristics of the welded joint which has a direct relationship with the type of welding process being used and its input process parameters i.e. welding current, arc voltage, travel speed etc. In the present study, determination of tungsten inert gas (TIG) welding input parameters for achieving maximum tensile strength of 316L austenitic stainless steel is investigated. Box-Behnken design of response surface methodology has been employed to formulate the experimental plan to identify the effect of process parameters on tensile strength. Square butt joint configuration has been made using three factors - three levels of welding input parameters. Joint strength has been evaluated by notch tensile strength (NTS) and Unnotch tensile strength (UTS) method and correlated with microstructure and micro hardness of the weld. The results indicate that gas flow rate has greater influence on both NTS and UTS...
Review Paper on Optimization of Metal Inert Gas Welding on Stainless Steel AISI 410by Taguchi Method
International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2023
Austenitic stainless steel is widely used materials in the current industrial area including higher and lower temperature applications such as storage tanks, pressure cups, furnace equipment etc. Using ratio of those materials are increasing constantly due to having superior corrosion resistance and mechanical properties, GTAW process are widely used for stainless steel welding, especially for full penetration welds in thin gage materials. Selection of shielding gas and filler material is crucial parameter for the quality, the micro structure and properties of weldments. The weldment properties strongly depended on the shielding gas, since it dominates the mode of metal transfer. Shielding gas not only affects the properties of weld but also determines weldability, the appearance, the shape and penetration of bead as well. Pure argon is mainly used for GTAW as shielding gas at present. The most common shielding gases are argon riches mixtures, such as argon with a few percent helium, carbon dioxide, hydrogen, oxygen, nitrogen for GTAW process. In this project we will be made many attempts for made test pieces(SS410) to predict the process parameter of MIG for getting maximum weldment, best mechanical properties and min HAZ. The planned experiments are conducted in the MIG are welding machine; the test piece examination is carried out by following process I.
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...
Tungsten inert gas (TIG) welding is a fusion welding process having side range of applications in current industry. The TIG welding process parameters plays a very significant role in estimating the quality of a welded joint. So appropriate selection of welding process parameters is very much necessary to attain weld joint with increased tensile strength value. In the work, experiments were carried out on Austenitic Stainless Steel (AISI 304L) using Tungsten inert gas (TIG) welding process. In this study Butt welded joints have been made by using three levels of current, gas flow rate and nozzle to work piece distance. The quality of the weld has been estimated in terms of ultimate tensile strength of the welded specimens L9 orthogonal array of Taguchi`s experimental design method was utilized for optimization of welding current, gas flow rate and nozzle to work piece distance on welded joints.
To Study The Effects of Welding Parameters on MIG Welding of Stainless Steel Alloy-202
AISI 202 SS (Stainless Steel) has similar mechanical property as compare to AISI 304 SS grade, but its ability to resist corrosion is somewhat less as compare to AISI 304 SS grade in chloride environment. But it is very inexpensive so we can use it in indoor applications like indoor fabrication, automobile trim and application where atmosphere is not a considerable factor. But there is very less research reported on welding of AISI 202 SS grade. In order to find out the weakest locations of the joints and determine the optimum MIG welding parameters, this present work aims to demonstrate its MIG weldability and the emphasis is placed on the relations of the tensile properties and hardness to the welding parameters. To improve welding quality of Stainless Steel 202 (SS-202) is welded with MIG welding system by changing different welding parameters. Effect of welding current, gas flow rate (CO2) and welding speed on the tensile strength and hardness of the weld joint has been investigated. Optical microscopic analysis has been done on the weld zone to evaluate the effect of welding parameters on welding quality. Micro-hardness value of the welded zone has been measured at the cross section to understand the change in mechanical property of the welded zone.
Polytechnic Journal, 2020
The aim of this study is to investigate the influence of different heat inputs on mechanical properties and microstructure of dissimilar electrical arc welded austenitic stainless steel AISI 304 and low-carbon steel (CS) joints. The mechanical properties of welded austenitic stainless steel type AISI 304 and low-CS are studied. Five different heat inputs 0.5, 0.9, 1.41, 2, and 2.5 KJ/min were applied to investigate the microstructure of the welded zone and mechanical properties. The results showed that the efficiency of the joints and tensile strength increased with increasing heat inputs, while excess heat input reduces the efficiency. Furthermore, changes in microstructure with excess heat input cause failure at the heat-affected zone.
Experimental Investigation of Similar & Dissimilar Joints on Stainless Steel with TIG & MIG Welded
International Journal for Research in Applied Science and Engineering Technology (IJRASET) i, 2021
Now days, most of the structural fabrications possess welded joints that are produced using suitable welding technique. However, the joining of thick plates in a single pass welding is a cumbersome task to many fabricators. Likewise, the selection of welding technique, filler wire and welding condition for the similar and dissimilar welding of several metals is at the development stage. The similar and dissimilar metal joints of have been emerged as a structural material for various industrial applications which provides good combination of mechanical properties like strength, corrosion resistance with lower cost. Selections of joining process for such a material are difficult because of their physical and chemical properties. The stainless steel of similar and dissimilar material joints are very common structural applications joining of stainless steel is very critical because of carbon precipitation and loss of chromium leads to increase in porosity affects the quality of joint leads deteriorate strength. In the present study, stainless steel of grades 310 and 316 were welded by Tungsten Inert Gas (TIG) and Metal Inert Gas (MIG) welding with compound flux of 50 % SiO 2 + 50 % TiO 2 processes. The mechanical behavior like hardness, tensile strength and bending properties of similar and dissimilar metal joints were investigated.
2014
Dipartimento di Ingegneria Industriale, Padova University, Via Marzolo 9, Padua, Italy Stainless steels (SS) in automobile sector were previously incorporated mainly due to their decorative applications. Nowadays, their functional and specific characteristics make them more required and employed in this sector. Especially attention from automotive manufacturers has been paid in order to improve the engine efficiency and reduce weight of the vehicle, stainless steels result to be enabled due to their high strength mechanical characteristics, energy absorption capability, fatigue and corrosion resistance; besides their ductility which is traduced to an easy manufacturability. When welding is applied some of their characteristics may be affected and could decrease their mechanical properties. In attempt to avoid these circumstances, welding experimental practices must be carried out. In this study plates of 308 austenitic and 409 ferritic stainless steels were welded by Gas Tungsten Ar...
International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2019
The successful weld between dissimilar metal is one that is as strong as the weaker of the two metals being joined. Bimetallic combinations of SS 316L and IS 2062 are used widely in the heat exchangers, super heaters employed in the oil gasification plants, chemical processing equipments, and nuclear sector. However effective welding of dissimilar metals has represented a major challenge in thermal and mechanical properties of the material to be joined under a common welding condition. Over the years the lifespan of many machines have been reduced or have not matched its estimated lifespan due to poor joints. The poor joints may be due to the improper welding joints. And variety of problems come up in dissimilar welding like cracking, large weld residual stresses, migration of atoms during welding causing stress concentration, stress corrosion cracking etc. To overcome these problems, it is required to study the effect of welding process parameters. The main purpose of this project is to study the mechanical properties of SS 316L and IS 2062 alloys welded by TIG welding and to achieve the optimized process parameters using Taguchi and ANOVA techniques. And lastly micro structural properties of the jointed materials were investigated. This process provides a purer and cleaner high volume weldment. The effect of different welding Current (110, 120,130Amp), different Voltage (40, 50,60V) and different Gas flow rate (8, 9,10Lit/min) on ultimate tensile strength and Hardness of dissimilar welding, are used to find out the significance of input parameter by DOE.