scholarly journals Characteristic of Weld Bead By Using Flat Wire Electrode In GMAW Inline During The Process: An Experimental And Numerical Analysis

2021 ◽  
Author(s):  
K Sripri ◽  
M Ramu ◽  
P R Thyla ◽  
K Anantharuban ◽  
M Karthigha
Keyword(s):  
Steady State ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Butt Joint ◽  
Weld Bead ◽  
Wire Electrode ◽  
Molten Droplet ◽  
Metal Arc Welding ◽  
Steady State Temperature

Abstract This paper focusses on effect of flat wire electrode on gas metal arc welding (FW-GMAW) inline during the process to improve quality of weld bead. Since the flat wire electrode perimeter has enlarged, the turbulence of the molten droplet characteristics is altered due to the effect of electromagnetic force. To bring out, butt joint welding are proven with use of the flat wire electrode. The experimental results indicated that, the flat wire electrode and their orientations are significantly factors to improve the weld bead dimensions, due to the increased in steady state temperature and heat density. The end result also evident that the depth-to-width (D/W) ratio was improved on an average by 7.7 % than regular wire electrode used in GMAW. To validate, a comprehensive numerical model was developed, the result confirmed that the initial arc and steady state temperature are high for FW-GMAW. In addition, improvements in metallurgical and mechanical properties are discussed in this paper.

scholarly journals Influence of welding method on microstructural creation of welded joints  

2011 ◽  
Vol 57 (Special Issue) ◽  
pp. S50-S56 ◽  
Author(s):  
P. Čičo ◽  
D. Kalincová ◽  
M. Kotus
Keyword(s):  
Welded Joints ◽  
Arc Welding ◽  
Welded Joint ◽  
Gas Metal Arc Welding ◽  
Structural Phase ◽  
Welding Parameters ◽  
Welding Method ◽  
Welding Technology ◽  
Metal Arc Welding

This paper is focused on the analysis of the welding technology influence on the microstructure production and quality of the welded joint. Steel of class STN 41 1375 was selected for the experiment, the samples were welded by arc welding including two methods: a manual one by coated electrode and gas metal arc welding method. Macro and microstructural analyses of the experimental welded joints confirmed that the welding parameters affected the welded joint structure in terms of the grain size and character of the structural phase.

INVESTIGATION ON CORROSION RATE OF BUTT-JOINT IN GAS METAL ARC WELDING, FLUX CORE ARC WELDING AND SUBMERSIBLE ARC WELDING

2015 ◽  
Vol 76 (6) ◽  
Author(s):  
Bulan Abdullah ◽  
Syuhada Ismail ◽  
Muhammad Hafizuddin Jumadin
Keyword(s):  
Corrosion Rate ◽  
Arc Welding ◽  
Sea Water ◽  
Gas Metal Arc Welding ◽  
Butt Joint ◽  
Corrosion Process ◽  
Welding Flux ◽  
Metal Arc Welding ◽  
Current Voltage ◽  
Different Types

Corrosion can be defined as the destructive attack of a metal through interaction with its environment. Different type of welding can be factors that contribute to the corrosion and erosion problems since this type of welding will lead the material to expose with the corrosion and erosion agents like salt, air , water and material composition, dissolved oxygen content in the fluid, pH and fluid’s velocity characteristics. Research was carried out in order to investigate the corrosion rate on mild steel at 3 different types of welding which are Gas Metal Arc Welding (GMAW), Flux Core Arc Welding (FCAW) and Submersible Arc after exposed in 3 types of solution; sea water, sodium chloride and reverse osmosis (RO). In each of the types of welding, the parameters were fixed that includes of current, voltage and speed of travel. Immersion and polarisation test using Gamry instruments test were conducted to distinguish the corrosion rate. Results showed SAW had a least corrosion rate than FCAW and GMAW and morphology transformation differences occur during the corrosion process.

Analysis of weld bead characteristics on GMAW by changing wire electrode geometry

2016 ◽  
Vol 78 (2) ◽  
pp. 49-58 ◽  
Author(s):  
K. Sripriyan ◽  
M. Ramu
Keyword(s):  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Experimental Results ◽  
Manufacturing Industries ◽  
Electrode Geometry ◽  
Weld Quality ◽  
Wire Electrode ◽  
Metal Arc Welding ◽  
Manufactured Products ◽  
Welding System

Purpose: Welding is one of the important processes for the manufacture of a wide varietyof products. Most of the manufactured products have to be produced by welding due to itsgreater productivity and economical viability. Still quality has to be enhanced in the products.To attain the perfect quality in weld a new attempt has been tried out while existing processare being optimized. In this direction, the conventional Gas Metal Arc Welding (GMAW) hasbeen developed to encourage high welding performance variant. Influence of changingfiller metal geometry is one of the ways to improve the capability of giving high depositionrate and penetration. Accordingly, a flat wire arc welding system has been developed andweld bead characteristic has been investigated. The overall results show that, the proposedtechnique of changing wire electrode geometry can be used effectively to improve the weldbead characteristics. In this article, how does a change in electrode geometry contribute tothe weld quality in manufacturing industries, is well- verified by experimental results, whichare also explored here.

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