scholarly journals Influence of Oxygen and Calcium in Titanium Welding Wire Surface on Arc Stability and Droplet Transfer in Pulsed MIG (Metal Inert Gas) Welding Process

DENKI-SEIKO ◽  
2004 ◽  
Vol 75 (4) ◽  
pp. 231-236 ◽  
Author(s):  
Hirotsugu Horio ◽  
Kazuhiro Toyoda
Keyword(s):  
Welding Process ◽  
Inert Gas ◽  
Wire Surface ◽  
Droplet Transfer ◽  
Welding Wire ◽  
Arc Stability ◽  
Titanium Welding ◽  
Metal Inert Gas Welding

Efficient Activated Metal Inert Gas Welding Procedures by Various Fluxes for Welding Process

2021 ◽  
pp. 419-427
Author(s):  
Aman Sharma ◽  
Rishabh Chaturvedi ◽  
Pradeep Kumar Singh
Keyword(s):  
Welding Process ◽  
Inert Gas ◽  
Metal Inert Gas Welding

Numerical simulation of the metal inert gas welding process that considers grain heterogeneity

2020 ◽  
pp. 146442072094991
Author(s):  
Chang Li ◽  
Zhengwei Chen ◽  
Hexin Gao ◽  
Dacheng Zhang ◽  
Xing Han
Keyword(s):  
Thermal Stress ◽  
Stress Distribution ◽  
Thermal Stresses ◽  
Statistical Significance ◽  
Voronoi Tessellation ◽  
Welding Process ◽  
Vertical Direction ◽  
Inert Gas ◽  
Mechanical Coupling ◽  
Metal Inert Gas Welding

It is of great significance to reveal the microevolution mechanism of welded structures during thermo-mechanical coupling to improve the welding quality. In this paper, a random microcrystalline structure model for welds is established by the Voronoi tessellation method. According to the nanoindentation results, heterogeneous grains are produced. A welding workpiece model with statistical significance is established. On this basis, the Python script and the birth and death element method are used to realize the transient growth of a weld, and a thermo-mechanical coupling model for the SUS301L-HT stainless steel metal inert gas welding process is established. The temperature field and thermal stress field are calculated. The calculation shows that the thermal stresses along the growth direction of the weld area are in the form of a “trapezoid,” and the stresses at both ends are small. The stress in the vertical direction of the weld has a single peak, and the peak appears in the center of the weld. The stress distribution of the model that considers heterogeneous grains is obviously inhomogeneous compared with that of the traditional model. The thermal stress distribution in the weldment is obviously inhomogeneous due to the heterogeneous grains, the stresses at the boundaries of the adjacent grains in the weldment change abruptly. It is found that the greater the difference in the mechanical properties between grains is, the more obvious the change.

scholarly journals Analisa Pengaruh Variasi Arus Listrik Pengelasan Terhadap Kekuatan Sambungan Pengelasan MIG Pada Material ST 37

2020 ◽  
Vol 5 (2) ◽  
pp. 140-144
Author(s):  
Wenny Marthiana ◽  
Yovial Mahyoedin ◽  
Duskiardi Duskiardi ◽  
Afri Rahim
Keyword(s):  
Tensile Strength ◽  
Elasticity Modulus ◽  
Welding Process ◽  
Welding Current ◽  
Inert Gas ◽  
Bead Geometry ◽  
Weld Bead Geometry ◽  
Metal Inert Gas Welding ◽  
Influential Parameters

AbstrakPada proses produksi, pengaturan parameter poses memegang peranan penting terhadap tercapainya mutu produk yang dihasilkan. Pada proses pengelasan, salah satu parameter proses pengelasan yang harus diperhatikan adalah besar arus pengelasan. Kajian ini dilakukan untuk mengetahui besar kuat arus yang sesuai pada proses pengelasan material ST 37 menggunakan proses pengelasan MIG (Metal Inert Gas).  Pengujian dilakukan dengan memvariasikan besar kuat arus pengelasan yaitu pada 90A, 100A, 110A serta 120A. Pengujian tarik dilakukan terhadap hasil pengelasan tersebut. Hasil pengujian tarik menunjukkan, pengelasan menggunakan kuat arus sebesar 110A memberikan nilai yang maksimum pada beberapa besaran pengujian.  Untuk nilai tegangan tarik, σ memiliki nilai 16.9 kg/mm2, modulus elastisitas, E, 3.14 kg/mm2 serta Regangan ε, 5.42%. Kata kunci: pengelasan, Metal Inert Gas, Tegangan Tarik, modulus elastisitas  AbstractThe appropriate production parameter process plays an important role in fulfill the quality of the products such as mechanical properties like tensile strength and percentage of elongation of MIG welded joints.  Likewise, in the welding process, one of the welding process parameters that is welding current must be considered, since the welding current is most influential parameters affecting weld penetration, deposition rate, weld bead geometry and quality of weld metal. Variation of welding current on MIG (Metal Inert Gas) welding process on ST 37 specimen   was to examine the effects on like tensile strength and percentage of elongation and elasticity modulus.  From the experiment, it is found that when welding current increased up to 110 Ampere the tensile strength tends to incline then slightly decline when welding current increased, modulus elasticity value and percentage of elongation value as well.  The maximum value of tensile strength 16.9 kg/mm2 percentage of elongation value 5.42%. and modulus of elasticity 3.14 kg/mm2 were gained at 110 ampere welding current Keywords: welding process, Metal Inert Gas, Tensile strength, elasticity modulus ,percentage of elongation

A New Direction for Optimizing the Weld Pool Geometry in Welding of HSLA Steel

2015 ◽  
Vol 4 (2) ◽  
Author(s):  
Rajesh Singh ◽  
Gaurav Yadav
Keyword(s):  
Taguchi Method ◽  
Weld Pool ◽  
Hsla Steel ◽  
Experimental Studies ◽  
Welding Process ◽  
Inert Gas ◽  
Welding Parameters ◽  
Feed Speed ◽  
Weld Pool Geometry ◽  
Metal Inert Gas Welding

This paper reports on process parameter selection for optimizing the weld pool geometry in the metal inert gas welding of High strength low alloy (HSLA) steel. The experimental studies were conducted under varying Voltage, flow rate, stick out and wire feed speed. The settings of welding parameters were determined by using the Taguchi experimental design method. The level of importance of the welding parameters on the weld pool geometry is determined by using analysis of variance (ANOVA). The optimum welding parameter combination was obtained by using the analysis of signal-to-noise (S/N) ratio. The confirmation tests indicated that it is possible to optimize the weld pool geometry significantly by using the Taguchi method. The experimental results confirmed the validity of the used Taguchi method for enhancing the welding performance and optimizing the welding parameters in the metal inert gas welding process.

scholarly journals Effect of Metal Inert Gas Welding Process Parameters to Tensile Strength on ST 37 Steel Sheet Joint

2020 ◽  
Vol 1569 ◽  
pp. 032055
Author(s):  
Hakam Muzakki ◽  
Teguh Prasetyo ◽  
M Syafi’ul Umam ◽  
Ida Lumintu ◽  
Dwi Hartanto
Keyword(s):  
Tensile Strength ◽  
Process Parameters ◽  
Steel Sheet ◽  
Welding Process ◽  
Inert Gas ◽  
Metal Inert Gas Welding

scholarly journals Optimization of Metal Inert Gas Welding Process during Joining of Structural Steels- An Overview

2020 ◽  
Vol 184 ◽  
pp. 01028
Author(s):  
Ravindra Kumar Misra ◽  
Rajesh Kumar Porwal
Keyword(s):  
Heat Treatment ◽  
Welded Joints ◽  
Experimental Studies ◽  
Welding Process ◽  
Inert Gas ◽  
Fatigue Properties ◽  
Input Parameters ◽  
Metal Inert Gas Welding ◽  
Weld Heat

Metal Inert Gas welding is a fast, reliable and cost effective technique for joining of different ferrous materials and steels used in the construction of large structures like Fe410WA, IS2062, SS304, AISI1040 and AISI316 etc. To obtain better quality and performance of the steel welded joints, parameter optimisation of metal inert gas welding procedure and weld heat treatment process is carried out. In optimization work and studies, variables of GMAW process like welding voltage and current, speed of welding, WFR (rate of wire feed), GFR (rate of gas flow), type of gas used and effect of heat treatments are kept changing to get best combinations of input parameters for best quality of welded parts. The quality of welds is evaluated in terms of mechanical properties of welded joints like ultimate tensile and yield strength, elongation, microstructure, heat affected zone and defect free weld joints etc. Model and experimental studies are done in different combinations to get best combination of input parameters for steels. Studies by authors have identified the significance of input parameters in ascending order and some of them also quantified the optimal values of the input parameters. Pre and post weld heat treatment of structures is beneficial in improvement of mechanical and fatigue properties.

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