scholarly journals ENENTUAN PARAMETER PENGELASAN RANGKA UTAMA SEPEDA MOTOR MATIC BAGIAN DEPAN MENGGUNAKAN LAS MIG OTOMATIS (PANASONIC TM-1400G3)

POROS ◽  
2018 ◽  
Vol 15 (1) ◽  
pp. 44
Author(s):  
Yusril Irwan ◽  
Gatot Pamungkas
Keyword(s):  
Structure Analysis ◽  
Gas Flow ◽  
Low Carbon Steel ◽  
Welding Parameters ◽  
Vertical Position ◽  
Automatic Welding ◽  
Low Carbon ◽  
Leg Length ◽  
Welding Machine ◽  
Main Frame

Abstract: Main frame welding at the front automatic motorcycle of PT. XXX is the stage of (trial production). The welding machine is Panasonic TM-1400G3 MIG automatic welding machine with 75% Argon and 25% Ar-CO2. Main frame material low carbon steel STAM 390G. To obtain the welding results in accordance with the standards specified by the client, weld testing parameters are varied for each test, which are ampere and voltage. The constant welding parameters in this research are travel speed, gas flow, welding direction, tip distance to workpiece, torch angle and welding angle. All test results are inspected visually and dimensionally, if passed, it will be followed by inspection of macro structure analysis. The results measured on the macro structure analysis ar : penetration (a1), penetration (a2), bead welding, throuth, leg length and crown with standard measurement values determined by the client PT.XXX. The welding results (OK) in the macro structure analysis measurement are defined as reference parameters for mass production. The best parameters for main frame welding are vertical position down (3G) with 170 Ampere current and 20 Volt voltages, and for horizontal position (2G) with 180 ampere current parameters and 17 Volt voltages. 

scholarly journals Effects of Parametric Variations on Bead Width of Gas Tungsten Arc Welding of AISI 1020 Low Carbon Steel Plate

2018 ◽  
Vol 5 (3) ◽  
pp. 1-13
Author(s):  
A.E. Ikpe ◽  
I.B. Owunna
Keyword(s):  
Carbon Steel ◽  
Gas Flow ◽  
Steel Plate ◽  
Low Carbon Steel ◽  
Weld Bead ◽  
Welding Parameters ◽  
Low Carbon ◽  
Bead Width ◽  
Gas Tungsten Arc ◽  
Solid Works

Variations of welding parameters and their effects on weld bead width of gas Tungsten Arc Weldment of 10 mm (thickness) AISI 1020 low carbon steel plate was investigated in this paper. Welding experimentation was carried out for Twenty seven (27) runs with three (3) ranges of current (120A, 150A and 190A), three (3) ranges of voltage (19V, 21V and 25V) and three (3) ranges of gas flow rate (13, 15 and 18 L/min) respectively. Applying the same range of parameters as inputs in Solid Works 2017 version, Finite Element Method (FEM) was employed to predict the weld bead width variations. To avoid wider weld bead width which can contribute to poor weld quality, a condition was established, in which the bead width values from both experimental and FEM prediction must not exceed 1.25 mm. Thermal transient flow simulation was also carried out with Solid Works 2017 version to determine the melting behavior of the material which revealed 1694 K as the solidus temperature and 1738 K as the liquidus temperature. It was observed that varying the welding current, arc voltage and the gas flow rate for the welding experimentation and finite element simulation, alternating weld bead widths of close proximity were produced. However, certain sets of parameters used for the welding experimentation met the aforementioned condition (≤1.25 mm) with the following values 1.02 mm, 1.05 mm, 1.10 mm, 1.07 mm, 1.15 mm and 1.19 mm while the same combination of parameters in the FEM met the condition with the following FEM predicted values 1.0 mm, 1.03 mm, 1.08 mm, 1.05 mm, 1.13 mm and 1.15 mm respectively. These findings are only applicable to AISI 1020 low carbon steel, therefore, melting point of materials should be adequately understood with proper knowledge of welding parameters prior to commencement of welding operation to avoid excessive increase in weld bead width.

Computational Fluid Dynamics Study of New Vacuum Degassing Process

2009 ◽  
Vol 4 (3) ◽  
Author(s):  
Manas Kumar Mondal ◽  
Govind Sharan Gupta ◽  
Shin-ya Kitamura ◽  
Nobuhiro Maruoka
Keyword(s):  
Fluid Flow ◽  
Gas Flow ◽  
Low Carbon Steel ◽  
Momentum Balance ◽  
Low Carbon ◽  
Decarburization Rate ◽  
Vacuum Degassing ◽  
Liquid Phases ◽  
New Process ◽  
Flow Phenomena

Recently, the demand of the steel having superior chemical and physical properties has increased for which the content of carbon must be in ultra low range. There are many processes which can produce low carbon steel such as tank degasser and RH (Rheinstahl-Heraeus) processes. It has been claimed that using a new process, called REDA (Revolutionary Degassing Activator), one can achieve the carbon content below 10ppm in less time. REDA process, in terms of installment cost, is in between the tank degasser and RH processes. As such, REDA process has not been studied thoroughly. Fluid flow phenomena affect the decarburization rate the most besides the chemical reaction rate. Therefore, momentum balance equations along with k-? turbulent model have been solved for gas and liquid phases in two-dimension (2D) for REDA process. The fluid flow phenomena have been studied in details for this process by varying gas flow rate, depth of immersed snorkel in the steel, diameter of the snorkel and change in vacuum pressure. It is found that the design of the snorkel affects the melt circulation of the bath significantly.

Welding Shape Control of Cross Member Backbone Assembly by Automatic Gas Metal Arc Yaskawa-MA1440 Type

2021 ◽  
Vol 877 ◽  
pp. 90-95
Author(s):  
Lydia Anggraini ◽  
Kalimi
Keyword(s):  
Shape Control ◽  
Gas Flow ◽  
Gas Metal Arc Welding ◽  
Travel Speed ◽  
Machine Construction ◽  
Weld Strength ◽  
Automatic Welding ◽  
Leg Length ◽  
Steel Coil ◽  
Cross Member

In order to prevent distortion caused by heat which affects the material deformation, the properties controlled are required. The properties changes and the placement of the mounting position will effect the weld strength that causes cracks and broken joints, therefore it affects the safety of machine construction. Thus, the objective of this paper is to control the shape of cross member backbone assembly by gas metal arc welding (GMAW). The welding is produced by an automatic robot Yaskawa-MA1440 type. In order to obtain the good quality of the result, the welding shape is controlled by a parameters combination of voltage, current, and speed. Yaskawa-MA1440 type is used as the automatic welding machine. The main material used is cold rolled steel coil sheet MJSC270D-OD with a thickness of 1.2 mm. In addition, to control the welding shape, the specified shape design standard is followed include travel speed, gas flow, welding direction, torch tip distance to the workpiece, torch angle and welding angle. The results of visual and dimensional were also examined in this research. Furthermore, the macrostructure i.e. leg length, fusion penetration, throat thickness have been analyzed and confirmed based on the standards used in the auto body vehicle part company. The appropriate parameters for the finest welding shape are defined at the horizontal position using an electric current of 120 A and the welding voltage of 18 V (± 1 V). Thus, the measurement control of macrostructure is defined as reference parameters for mass production of cross member backbone assembly.

scholarly journals Numerical Simulation Mode of Spot Contact Welding Processes

2021 ◽  
pp. 85-91
Author(s):  
А.С. Угловский ◽  
И.М. Соцкая ◽  
Е.В. Шешунова
Keyword(s):  
Spot Welding ◽  
Low Carbon Steel ◽  
Welding Process ◽  
Welding Parameters ◽  
Low Carbon ◽  
Detailed Data ◽  
Welding Quality ◽  
Welding Processes ◽  
Contact Welding

Цель рассмотрения численного метода заключалась в получении подробных данных, позволяющих оценить проведение сварочного процесса: изменение объёма сварного шва, радиуса сварного шва, радиуса зоны термического влияния. При проведении моделирования авторами выведены зависимости параметров точечной сварки низкоуглеродистой стали толщиной до 3,2 мм. Данные зависимости будут определять качество сварных швов. Соответствующее сочетание параметров точечной сварки обеспечит прочное соединение и хорошее качество сварки. The purpose of the numerical method consideration was to obtain detailed data allowing evaluating the performance of the welding process: changing the volume of the weld, the radius of the weld, the radius of the weld-affected zone. During the simulation the authors have derived dependencies of the parameters of spot welding of low-carbon steel up to 3.2 mm thick. These dependencies will determine the quality of the welds. The correct combination of spot welding parameters will ensure a firm joint and good welding quality.

Optimization of Automatic TIG Welding Parameters of AISI 304L ASS Welds Using Response Surface Methodology

2021 ◽  
Vol 406 ◽  
pp. 319-333
Author(s):  
Tahar Saadi ◽  
Mohamed Farid Benlamnouar ◽  
Nabil Bensaid ◽  
Amar Boutaghane ◽  
Mohamed Amine Soualili ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Gas Flow ◽  
Desirability Function ◽  
Welding Parameters ◽  
Automatic Welding ◽  
Aisi 304L ◽  
Rsm Optimization ◽  
Single Response

The present study, aims to investigate, under welding parameters of current, voltage and gas flow, the effects of welding parameters on tensile strength of AISI 304L ASS welds using response surface methodology (RSM). The RSM and variance analysis (ANOVA) were used to check the validity of quadratic regression model and to determine the significant parameter affecting tensile strength of welds. Hence, ANOVA clearly revealed that the contribution of each factor is 71.40% of voltage, 19.2% of current and 8.30% of gas flow. It was found that combined contributions of welding parameters contributes significantly to the metallurgical changes by varying fractions, morphology and grain size of metallic compounds. Furthermore, the optimum automatic welding conditions lead to produce the best possible weld quality in the range of our experiment using desirability function approach for single response of RSM optimization factors, in which it concluded that tensile strength components are influenced principally by voltage. Finally, the ranges for best welding conditions are proposed for serial industrial production.

scholarly journals Performance Evaluation of the Effects of Post Weld Heat Treatment on the Microstructure, Mechanical and Corrosion Potentials of Low Carbon Steel

2019 ◽  
Vol 44 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Isiaka Oluwole Oladele ◽  
Davies Babatunde Alonge ◽  
Timothy Olakunle Betiku ◽  
Emmanuel Ohiomomo Igbafen ◽  
Benjamin Omotayo Adewuyi
Keyword(s):  
Heat Treatment ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Welding Process ◽  
Post Weld Heat Treatment ◽  
Welding Parameters ◽  
Low Carbon ◽  
Corrosion Properties ◽  
Mechanical And Corrosion Properties ◽  
Weld Heat

The effect of Post Weld Heat Treatment (PWHT) on the microstructure, mechanical and corrosion properties of low carbon steel have been investigated. The welding process was conducted on butt joint using Manual Metal Arc Welding (MMAW) techniques at a welding voltage of 23 V and welding current of 110 A with the use of E6013 and 3.2 mm diameter as filler material. Heat treatment through full annealing was carried out on the welded low carbon steel. The mechanical properties (hardness, impact toughness and tensile properties) of the AW and PWHT samples were determined. The microstructure of the AW and PWHT samples was characterized by means of an optical microscopy. Corrosion behavior of the sample was studied in3.5 wt.% NaCl environment using potentiodynamic polarization method. The results showed that the AW samples has good combination of mechanical and corrosion properties. The microstructure revealed fine grains of pearlite randomly dispersed in the ferrite for the AW base metal (BM) sample while agglomerated and fine particle of epsilon carbide or cementite randomly dispersed on the ferritic phase of the heat affected zone (HAZ) and weld metal (WM), of the AW, respectively. The PWHT samples shows that the annealing process allow diffusion and growth of the fine grains into partial coarse grains of ferrite and pearlite which did not encourage improvement of the properties. Therefore, it was concluded that the welding parameters put in place during welding of the low carbon steel are optimum for quality weld.

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