Reaction-Kinetic Model for the Calculation of the Chemical Composition of Weld Metals in Shielding Gas Arc Welding Processes

1998 ◽  
pp. 257-262
Author(s):  
N. Meyendorf
Keyword(s):  
Chemical Composition ◽  
Kinetic Model ◽  
Arc Welding ◽  
Reaction Kinetic ◽  
Shielding Gas ◽  
Reaction Kinetic Model ◽  
Weld Metals ◽  
Welding Processes

Limitations of the Schlieren technique for shielding gas flow visualization in arc welding processes

2021 ◽  
Author(s):  
Mateus Barancelli Schwedersky ◽  
Álisson Fernandes da Rosa ◽  
Marcelo Pompermaier Okuyama ◽  
Régis Henrique Gonçalves e Silva
Keyword(s):  
Flow Visualization ◽  
Arc Welding ◽  
Gas Flow ◽  
Shielding Gas ◽  
Schlieren Technique ◽  
Welding Processes

A Detailed Reaction Kinetic Model of Heavy Naphtha Reforming

2020 ◽  
Vol 45 (9) ◽  
pp. 7361-7370
Author(s):  
Zaidoon M. Shakor ◽  
Adnan A. AbdulRazak ◽  
Khalid A. Sukkar
Keyword(s):  
Kinetic Model ◽  
Reaction Kinetic ◽  
Reaction Kinetic Model ◽  
Naphtha Reforming

Effect of Shielding Gas Mixture on Gas Metal Arc Welding (GMAW) of Low Carbon Steel (LR Grade A)

2016 ◽  
Vol 705 ◽  
pp. 250-254 ◽  
Author(s):  
Yustiasih Purwaningrum ◽  
Triyono ◽  
M. Wirawan Pu ◽  
Fandi Alfarizi
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Carbon Steel ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Shielding Gas ◽  
Weld Metals ◽  
Metal Arc Welding

The aimed of this research is to determine the feasibility and effect of the mixture of the shielding gas in the physical and mechanical properties. Low carbon steel LR grade A in a thickness 12 mm were joined in butt joint types using GMAW (Gas Metal Arc Welding) with groove’s gap 5 mm and groove angle’s 400 with variation of shielding gas composition. The composition of shielding gas that used were 100% Ar, 100 % CO2 and 50% Ar + 50 % CO2. The measured of mechanical properties with regard to strength, hardness and toughness using, tensile test, bending test, Vickers hardness Test, and Charpy impact test respectively. The physical properties examined with optical microscope. Results show that tensile strength of welding metals are higher than raw materials. Welds metal with mixing Ar + CO shielding gas has the highest tensile strength. Hardness of weld metals with the shielding gas 100% Ar, 100 % CO2 and 50% Ar + 50 % CO2 are 244.9; 209.4; and 209.4 VHN respectively. The temperature of Charpy test was varied to find the transition temperature of the materials. The temperature that used were –60°C, -40°C, -20°C, 0°C, 20°C , and room temperature. Weld metals with various shielding gas have similar trends of toughness flux that was corellated with the microstructure of weld .

Chemical disinfection with H2O2 − The proposal of a reaction kinetic model

2012 ◽  
Vol 198-199 ◽  
pp. 388-396 ◽  
Author(s):  
Marina J. Flores ◽  
Rodolfo J. Brandi ◽  
Alberto E. Cassano ◽  
Marisol D. Labas
Keyword(s):  
Kinetic Model ◽  
Reaction Kinetic ◽  
Reaction Kinetic Model ◽  
Chemical Disinfection
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