Research on bead width and penetration depth of multicomponent flux-aided arc welding of grade 316 L stainless steel

2017 ◽  
Vol 311 ◽  
pp. 514-521 ◽  
Author(s):  
Kuang-Hung Tseng ◽  
Nai-Shien Wang
Keyword(s):  
Stainless Steel ◽  
Penetration Depth ◽  
Arc Welding ◽  
Bead Width ◽  
316 L Stainless Steel

scholarly journals Experimental and Numerical Analysis on TIG Arc Welding of Stainless Steel Using RSM Approach

Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1659
Author(s):  
Sasan Sattarpanah Karganroudi ◽  
Mahmoud Moradi ◽  
Milad Aghaee Attar ◽  
Seyed Alireza Rasouli ◽  
Majid Ghoreishi ◽  
...  
Keyword(s):  
Heat Flux ◽  
Stainless Steel ◽  
Welding Speed ◽  
Arc Welding ◽  
Welding Process ◽  
Weld Bead ◽  
Bead Geometry ◽  
Depth Of Penetration ◽  
Weld Bead Geometry ◽  
Bead Width

This study involves the validating of thermal analysis during TIG Arc welding of 1.4418 steel using finite element analyses (FEA) with experimental approaches. 3D heat transfer simulation of 1.4418 stainless steel TIG arc welding is implemented using ABAQUS software (6.14, ABAQUS Inc., Johnston, RI, USA), based on non-uniform Goldak’s Gaussian heat flux distribution, using additional DFLUX subroutine written in the FORTRAN (Formula Translation). The influences of the arc current and welding speed on the heat flux density, weld bead geometry, and temperature distribution at the transverse direction are analyzed by response surface methodology (RSM). Validating numerical simulation with experimental dimensions of weld bead geometry consists of width and depth of penetration with an average of 10% deviation has been performed. Results reveal that the suggested numerical model would be appropriate for the TIG arc welding process. According to the results, as the welding speed increases, the residence time of arc shortens correspondingly, bead width and depth of penetration decrease subsequently, whilst simultaneously, the current has the reverse effect. Finally, multi-objective optimization of the process is applied by Derringer’s desirability technique to achieve the proper weld. The optimum condition is obtained with 2.7 mm/s scanning speed and 120 A current to achieve full penetration weld with minimum fusion zone (FZ) and heat-affected zone (HAZ) width.

Studies on the Parametric Effects of Plasma Arc Welding of 2205 Duplex Stainless Steel

2018 ◽  
Vol 37 (3) ◽  
pp. 219-232 ◽  
Author(s):  
R. Selva Bharathi ◽  
N. Siva Shanmugam ◽  
R. Murali Kannan ◽  
S. Arungalai Vendan
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Welding Speed ◽  
Arc Welding ◽  
Welding Current ◽  
Plasma Arc Welding ◽  
Plasma Arc ◽  
Arc Length ◽  
Depth Of Penetration ◽  
Bead Width

AbstractThis research study attempts to create an optimized parametric window by employing Taguchi algorithm for Plasma Arc Welding (PAW) of 2 mm thick 2205 duplex stainless steel. The parameters considered for experimentation and optimization are the welding current, welding speed and pilot arc length respectively. The experimentation involves the parameters variation and subsequently recording the depth of penetration and bead width. Welding current of 60–70 A, welding speed of 250–300 mm/min and pilot arc length of 1–2 mm are the range between which the parameters are varied. Design of experiments is used for the experimental trials. Back propagation neural network, Genetic algorithm and Taguchi techniques are used for predicting the bead width, depth of penetration and validated with experimentally achieved results which were in good agreement. Additionally, micro-structural characterizations are carried out to examine the weld quality. The extrapolation of these optimized parametric values yield enhanced weld strength with cost and time reduction.

Effect of Microstructure and Mechanical Properties of Austenitic Stainless Steel 1.6mm Butt Welded by Plasma Arc Welding

2019 ◽  
Vol 969 ◽  
pp. 619-624
Author(s):  
S. Ramesh Kumar ◽  
S. Senthil Kumaran ◽  
M. Sree Arravind ◽  
D. Venkateswarlu
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Arc Welding ◽  
Laser Beam Welding ◽  
Plasma Arc Welding ◽  
Plasma Arc ◽  
Bead Width ◽  
Butt Weld ◽  
Microscopic Images ◽  
Metal Joint

Plasma Arc Welding (PAW) is more tolerant to joint misalignment than Laser Beam Welding (LBW) at a lower cost [1]. The present study deals with the assessment of mechanical and metallurgical properties of butt welded 1.6 mm thick austenitic stainless steel similar (SS304 and SS304) by using plasma arc welding technique. Similar butt-Welded joints were analyzed by using mechanical (Bend test, Erichsen cup test, tensile test) and metallurgical (Optical macroscopic and microscopic images) characterization methods. The bead width and depth of the butt welded 1.6mm thick butt joined SS304 was analyzed by macroscopic and microscopic images [2]. The Erichsen cup test was conducted on the weld specimens. The indentation was made on the weld specimens. In the similar metal joint the depth of indentation is high, which shows that the similar metal joint has better formability. This makes them appropriate for practicing in the aircraft industries (engine parts), automotive sector (engine-parts and assemblies) chemical processing, food processing, turbine buckets, pumps and valve parts [3]. Keywords: SS304, PAW, Butt weld, Erichsen Cup Test, Microstructure

scholarly journals Manufacturing of a Bimetallic Structure of Stainless Steel and Mild Steel through Wire Arc Additive Manufacturing – A Critical Review

2020 ◽  
Vol 5 (6) ◽  
pp. 679-685
Author(s):  
Anirudhan B T ◽  
Jithin Devasia ◽  
Tejaswin Krishna ◽  
Mebin T Kuruvila
Keyword(s):  
Stainless Steel ◽  
Additive Manufacturing ◽  
Mild Steel ◽  
Arc Welding ◽  
Bulk Material ◽  
Arc Discharge ◽  
Metal Wire ◽  
Layer By Layer ◽  
Bead Width ◽  
Wire Arc Additive Manufacturing

Wire and Arc based Additive Manufacturing, shortly known as WAAM, is one of the most prominent tech- nologies, under Additive Manufacturing, used for extensive production of complex and intricate shapes. This layer by layer deposition method avails arc welding technology; Gas Metal Arc Welding (GMAW), a competitive method in WAAM, is the conducted manufacturing process. It is a sum of heat source, originated from the electric arc, and metal wire as feedstock. The metal wire from the feedstock, melted by arc discharge, is deposited layer by layer. Another material can be added on to the top of deposited layer by replacing the feed wire from the stock, to fabricate a bimetallic structure. The purpose of this study is to collect the salient datum from the joining of two dissimilar metals. A combination of stainless steel and mild steel are considered. Proper deposition parameters, welding current along with voltage, bead width efficiency for both the metals were acquired. As a result, the physical properties of the dissimilar joint were approximate to the bulk material.

Gas Tungsten Arc Welding of Stainless Steel 304 and 202 Grades for Optimum Weld Bead Width and Hardness Value

2021 ◽  
Vol 13 (2) ◽  
Author(s):  
Debashis Mishra ◽  
L. Mangesh
Keyword(s):  
Stainless Steel ◽  
Welded Joints ◽  
Heat Input ◽  
Arc Welding ◽  
Travel Speed ◽  
Weld Bead ◽  
Bead Width ◽  
Gas Tungsten Arc ◽  
Weld Current ◽  
Gas Tungsten

Gas tungsten arc welding of two different stainless steel grades of 304 and 202 of 3 mm thickness is attempted through this experimentation to produce the weld joint without any weld defects. The pure argon is supplied to protect the molten weld pool from any form of contaminations. The welding factors like weld current and travel speed are chosen to prepare the welded joints. The response surface central composite experimental design is used to draw 10 numbers of welding conditions. The gas tungsten arc welded butt joint is produced in a single pass manually for complete penetration. The ranges of weld current are chosen as 86, 90, 100, 110, and 114amps. The welding speed is set as 1.54, 2.05, 4.64, 5.09, and 7.5mm/min. The welded sheets are evaluated for weld bead width which is measured with the help of a Vernier caliper. The hardness of the welded joints is also measured. The chosen factors and measured width of the weld bead and hardness value of the weld joints are analyzed by the use of different statistical terms such as R square, ANOVA analysis, lack of fit, t-test, F-test, and effect tests to state a regression expression at 95% assurance level. It is thus understood from the regression analysis that the welding current and travel speed having major influences upon the weld bead width and hardness of the welded joints. In the manual welding technique, both factors are supposed to be carefully matched by the welder otherwise the penetration depth and proper formation of weld bead width are quite difficult to obtain which further increases the total heat input leading to the degradation of mechanical properties. The current experiment is performed to get an optimum condition by optimizing the weld current and speed to get a well-formed weld bead structure by controlling the total heat input. Thus the experiment will be useful to get the desired quality gas tungsten arc welded joints which are most essential in particular for aerospace and automotive industries for various structural applications.

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