STUDY ON A-TIG WELDING ENERGY EFFICIENCY OF STAINLESS STEELS USING INDIVIDUAL FLUX-OXIDES Part 1: EVALUATION OF THE A-TIG ARC ENERGY EFFICIENCY TO THE WELD DEPTH OF PENETRATION

2019 ◽  
Vol 6 (2) ◽  
pp. 21-27
Author(s):  
RUSTAM SAIDOV ◽  
DURDONA KOMILOVA ◽  
MARIO KUSCH ◽  
PETER MAYR ◽  
KEVIN HOEFER
Keyword(s):  
Energy Efficiency ◽  
Stainless Steels ◽  
Efficiency Factor ◽  
Tig Welding ◽  
Depth Of Penetration ◽  
Welding Arc ◽  
A Tig Welding ◽  
Weld Depth ◽  
Individual Flux

This article presents the results of the study of activating oxide fluxes effects on the energy efficiency of the TIG welding arc (A-TIG) influence. This efficiency was estimated by the amount of energy spent by the arc (q) at the depth of penetration (P). It is revealed that the arc energy efficiency factor “Kepac” can be used as an indicator of the influence of arc energy on the efficiency of penetration of the welded metal, which is determined by the ratio of spent energy per unit of depth of penetration (q/P) at TIG and A-TIG welding. In accordance with the results of the research, it is observed an increase of the energy efficiency on the welding arc penetration capability of all individual oxides used as fluxes in A-TIG welding is observed. Among them, the greatest energy efficiency of the arc process on the penetration of CrNi18-10 steel is observed when oxides such as TiO2, SiO2, Cr2O3 and Co3O4 are used.

STUDY ON ENERGY EFFICIENCY OF A-TIG WELDING OF STAINLESS STEELS USING INDIVIDUAL FLUX-OXIDES. PART 2. INFLUENCE OF THERMODYNAMIC AND PHYSICO-CHEMICAL PROPERTIES OF FLUX-OXIDES

2019 ◽  
Vol 6 (3) ◽  
pp. 32-38
Author(s):  
RUSTAM MANNAPOVICH SAIDOV ◽  
DURDONA RUSTAMOVNA KOMILOVA ◽  
MARIO KUSCH ◽  
PETER MAYR ◽  
KEVIN HOEFER
Keyword(s):  
Energy Efficiency ◽  
Chemical Properties ◽  
High Energy ◽  
Tig Welding ◽  
Depth Of Penetration ◽  
Welding Arc ◽  
Physico Chemical ◽  
A Tig Welding ◽  
The Impact ◽  
Individual Flux

This paper presents the results of studies on the influence of thermodynamic and physico-chemical properties of individual flux-oxides on the energy efficiency of the arc A-TIG welding of stainless steel CrNi18-10. The obtained results of the research allowed to reveal the criteria for evaluating the energy efficiency of the arc A-TIG welding on the depth of penetration of the welded metal and to determine the impact of thermodynamic and physico-chemical properties of individual flux oxides on the energy efficiency of the penetration capability of the welding arc for different welding energies. The requirements to thermodynamic and physico-chemical properties of individual fluxes-oxides are also revealed, which provide high energy efficiency of arc penetration capability during A-TIG welding.

Heat flow to the workpiece from a TIG welding arc

1973 ◽  
Vol 6 (18) ◽  
pp. 2250-2258 ◽  
Author(s):  
M B C Quigley ◽  
P H Richards ◽  
D T Swift-Hook ◽  
A E F Gick
Keyword(s):  
Heat Flow ◽  
Tig Welding ◽  
Welding Arc ◽  
A Tig Welding

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

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.

Optimization of A-TIG welding process parameters for RAFM steel using response surface methodology

2015 ◽  
Vol 232 (2) ◽  
pp. 121-136 ◽  
Author(s):  
P Vasantharaja ◽  
M Vasudevan
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Process Parameters ◽  
Welding Process ◽  
Tig Welding ◽  
Depth Of Penetration ◽  
Bead Width ◽  
A Tig Welding ◽  
Input Variables ◽  
Haz Width

In the present work, the optimization of Activated TIG (A-TIG) welding process parameters to achieve the desired weld bead shape parameters such as depth of penetration, bead width, and heat-affected zone (HAZ) width have been carried out using response surface methodology (RSM). The main problem faced in fabrication of weld joints is the selection of optimum combination of input variables for achieving required quality of welds. This problem can be solved by development of mathematical model and execution of experiments by RSM. Central composite design of RSM has been used to generate the design matrix for generating data on the influence of A-TIG welding process parameters. The input variables considered were welding current, torch speed, electrode tip angle, and arc gap. The response variables considered were depth of penetration, bead width and HAZ width. A second-order response surface model is developed for predicting the response for the set of given input process parameters. Then, numerical and graphical optimization is performed using RSM to obtain the desired depth of penetration, bead width, and target HAZ width using desirability approach.

scholarly journals Optimization of the A-TIG welding for stainless steels

2018 ◽  
Vol 329 ◽  
pp. 012012 ◽  
Author(s):  
M Jurica ◽  
Z Kožuh ◽  
I Garašić ◽  
M Bušić
Keyword(s):  
Stainless Steels ◽  
Tig Welding ◽  
A Tig Welding
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