Avtomaticheskaya Svarka (Automatic Welding), #6, 2019, pp.60-64
Peculiarities of welding process using metal flux-cored wire of grade TMV5-MK
A.A. Golyakevich1, L.N. Orlov1, S.Yu. Maximov2
LLC «ТМ.VELTEK». 15 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: firstname.lastname@example.org
E.O. Paton Electric Welding Institute of the NAS of Ukraine.
11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: email@example.com
Currently, in the world market of welding consumables there is a steady trend in growing consumption of flux-cored wires. One of the rapidly developing technologies for manufacture of metal structures is arc welding in shielding gases using flux-cored wire with a metal core. The metal flux-cored wires as to the technology of application do not differ from the wires of solid section, and as to the number of technological characteristics they even surpass them. Taking into account the global trends in the development of mechanized welding and the lack of domestic analogues, LLC «TM.VELTEK» developed and mastered the production of high-performance metal flux-cored wire TMV5-MK for welding in a mixture of 82% Ar + 18% CO2
. It was established that metal flux-cored wire provides a high stability of arc burning in a wide range of welding conditions. Using the wire of solid section Sv-08G2S in welding at the same modes in the optimal range, the value of stability of arc burning is 3 times lower as compared to the metal flux-cored wire TMV5-MK. It is shown that the stability of welding process is significantly influenced by electrodynamic properties of the power source and this factor should be taken into account during evaluation of welding and technological properties of welding wires and development of recommendations for their application. 8 Ref., 1 Tabl., 4 Fig.
Key words: metal flux-cored wire, wire of solid section, power source, stability of arc burning, short circuit
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