A-TIG Welding of a Stainless Steel

2008 ◽  
Vol 587-588 ◽  
pp. 370-374 ◽  
Author(s):  
Altino Loureiro ◽  
A. Rodrigues
Keyword(s):  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Bead Geometry ◽  
Shielding Gases ◽  
Weld Penetration ◽  
Weld Bead Geometry ◽  
Activating Flux ◽  
A Tig Welding ◽  
Δ Ferrite ◽  
Helium Mixture

The aim of this research is the development of activating fluxes to improve weld bead geometry and increase weld penetration depth in austenitic stainless steels. The effect on bead geometry of two home-made fluxes, composed of titanium and aluminium oxides, was studied, in combination with two shielding gases, respectively Argon and an Argon/Helium mixture. A significant increase in penetration was obtained in welds done with the Ti based activating flux across the whole range of welding currents for both shielding gases, which was not the case for welds performed with the Al based flux. A decrease in δ-ferrite content in the weld metal with increasing current was observed only in welds done with the Ti based flux.

A role of δ-ferrite in edge-crack formation during hot-rolling of austenitic stainless steels

1997 ◽  
Vol 37 (8) ◽  
pp. 1231-1235 ◽  
Author(s):  
F. Czerwinski ◽  
A. Brodtka ◽  
J.Y. Cho ◽  
A. Zielinska-Lipiec ◽  
J.H. Sunwoo ◽  
...  
Keyword(s):  
Stainless Steels ◽  
Hot Rolling ◽  
Edge Crack ◽  
Crack Formation ◽  
Austenitic Stainless Steels ◽  
Δ Ferrite

Effect of Activating Flux on the A356 and 6061 Aluminum Alloy GMA Welds

2016 ◽  
Vol 835 ◽  
pp. 161-166 ◽  
Author(s):  
Hsuan Liang Lin ◽  
Wun Kai Wang
Keyword(s):  
Aluminum Alloy ◽  
Gma Welding ◽  
Welding Process ◽  
Hot Cracking ◽  
Bead Geometry ◽  
Weld Bead Geometry ◽  
6061 Aluminum Alloy ◽  
Activating Flux ◽  
Dissimilar Welds ◽  
Grey Relational

The objective of this study is to investigate the effects of activating fluxes on the weld bead geometry, hot cracking susceptibility and mechanical property of A356 and 6061 aluminum alloy dissimilar welds in the gas metal arc (GMA) welding process. In this activated GMA welding process, there were nine single-component fluxes used in the initial experiment to evaluate the penetration capability of butt-joint GMA welds. The grey relational analysis (GRA) was employed to obtain the better weld bead geometry of welds that were considered with multiple quality characteristics. Based on higher grey relational grade (GRG), four single-component fluxes were selected to create mixed-component flux in the next stage. The experimental results showed that the GMA welds coated with activating flux were provided with better geometry of dissimilar welds. The experimental procedure of activated GMA welding process not only produced a significant increase in tensile strength of welds, but also improved the hot cracking susceptibility of aluminum alloy welds.

Evaluation of the occurrence of mechanical constriction of the Arc in A-TIG welding of austenitic stainless steels

2017 ◽  
Vol 32 (3) ◽  
pp. 188-199
Author(s):  
Guilherme S. Pandolfi ◽  
Felipe G. Pinheiro Rodrigues ◽  
Paulo J. Modenesi
Keyword(s):  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Tig Welding ◽  
A Tig Welding

scholarly journals Parametric Optimization of Metal Inert Gas Welding for Hot Die Steel by using Taguchi Approach

2018 ◽  
Vol 15 (1) ◽  
pp. 100-106 ◽  
Author(s):  
Vijander Kumar ◽  
Navneet Goyal
Keyword(s):  
Tensile Strength ◽  
Weld Bead ◽  
Bead Geometry ◽  
Weld Penetration ◽  
Weld Bead Geometry ◽  
Maximum Tensile Strength ◽  
Current Voltage ◽  
Result Show ◽  
Metal Inert Gas Welding ◽  
Different Levels

In present experimental study an attempt has been made to investigate the effect of three machine input parameters namely current,voltage and nozzle to plate distance (NPD) on tensile strength of weld bead and weld penetration. Three different levels (current 180, 190, 200 in ampere. Voltage 21, 24, 27 in volt and NPD 12, 16, 20 in mm) have been considered in order to evaluate the effect of these parameters on tensile strength and penetration of weld bead. Taguchi method has been employed to abate the number of experiments and analyze the effect of various parameters. Orthogonal array L9 was used for data optimization. On the basis of experimental data, the mathematical technique has been developed by using analysis of variance. Results were obtained from each parameter at different levels for tensile strength and weld bead geometry. Based on these results different parameters were identified for maximum tensile strength and maximum weld penetration. Result show that maximum tensile strength was 390.8 Mpa at 200 ampere current, 27 volt and 16 mm NPD where as maximum weld penetration was 3.20 mm at 200 ampere current, 24 volt and 12 mm NPD

Performance of weld bead profile during A-TIG welding on nitrogen alloyed stainless steel

2021 ◽  
Author(s):  
Akash Deep ◽  
Vivek Singh ◽  
Som Ashutosh ◽  
M. Chandrasekaran ◽  
Dixit Patel
Keyword(s):  
Stainless Steel ◽  
Welding Process ◽  
Weld Bead ◽  
Tig Welding ◽  
Inert Gas ◽  
Bead Geometry ◽  
Depth Of Penetration ◽  
Weld Bead Geometry ◽  
A Tig Welding ◽  
Arc Welding Process

Abstract Austenitic stainless steel (ASS) is widely fabricated by tungsten inert gas (TIG) welding for aesthetic look and superior mechanical properties while compared to other arc welding process. Hitherto, the limitation of this process is low depth of penetration and less productivity. To overcome this problem activated tungsten inert gas (A-TIG) welding process is employed as an alternative. In this investigation the welding performance of conventional TIG welding is compared with A-TIG process using TiO2 and SiO2 flux with respect to weld bead geometry. The experimental investigation on A-TIG welding of ASS-201 grade shows TiO2 flux helps in achieve higher penetration as compared to SiO2 flux. While welding with SiO2 the hardness in HAZ and weld region higher than that of TIG welding process.

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