The influence of electric ARC activation on the speed of heating and the structure of metal in welds
| Autor: | M Mychailo Savytsky, R Darko Bajic, M Yuriy Shkrabalyuk, M Oleksandr Savytsky, T. Vuherer |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Heat-affected zone
Filler metal Materials science Renewable Energy Sustainability and the Environment lcsh:Mechanical engineering and machinery Gas tungsten arc welding Metallurgy Shielding gas penetration heating speed Welding arc welding Gas metal arc welding law.invention Plasma arc welding active flux law driving energy lcsh:TJ1-1570 Arc welding |
| Zdroj: | Thermal Science, Vol 20, Iss 1, Pp 239-246 (2016) |
| ISSN: | 2334-7163 0354-9836 |
| DOI: | 10.2298/tsci140530125s |
| Popis: | This paper presents the results of a research related to the impact of electric arc activation onto drive welding energy and metal weld heating speed. It is con- firmed that activated tungsten inert gas welding and activated metal inert gas welding methods, depending on metal thickness, single pass weldability and chemical composition of activating flux, enable the reduction of welding energy by 2-6 times when compared to conventional welding methods. Additionally, the- se procedures create conditions to increase metal weld heating speed up to 1,500-5,500 °Cs -1 . Steel which can be rapidly heated, allows for a hardened structure to form (with carbon content up to 0.4%), together with a released mar- tensitic structure or a mixture of bainitic-martensitic structures. Results of the re- search of effectiveness of activated tungsten inert gas welding and activated met- al inert gas welding showed that increase in the penetration capability of electric arc, which increases welding productivity, is the visible side of activated tungsten inert gas welding and activated metal inert gas welding capabilities. |
| Databáze: | OpenAIRE |
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