The Paton Welding Journal, 2019, №04



2019 №04 (04)

DOI of Article 10.15407/tpwj2019.04.05

2019 №04 (06)

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The Paton Welding Journal, 2019, #4, 23-26 pages
 
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue #4, 2019 (April)
Pages 23-26

Calculation of characteristics of alternating transverse magnetic field, having effect on drop transfer in arc welding and surfacing

A.D. Razmyshlyaev¹ and M.V. Ageeva²

¹SHEI «Priazov State Technical University» 7 Universitetskaya Str., 87500, Mariupol, Ukraine. E-mail: razmyshljaev@gmail.com
²Donbass State Mechanical Academy 72 Akademicheskaya Str., 84413, Kramatorsk, Ukraine. E-mail: maryna_ah@ukr.net

It is shown that in submerged-arc surfacing with the effect of constant transverse magnetic field the coefficient of melting of electrode wires of 3–5 mm diameter is increased by 25–30 %. It is experimentally found that at the effect of an alternating field at unchanged level of a transverse component of induction, the effect of increase in the coefficient of melting depends on frequency of this field. With increase of the field frequency up to 10–20 Hz, the increment of the coefficient of melting decreases to zero values. A procedure was developed for determination of the minimum level of transverse component of field induction in the electrode drop zone, at which the drop is detached from a melting electrode end. It is shown that the effect of decreasing the coefficient of melting at increase in the field frequency is predetermined by the reduction in duration of pulses. The paper gives the calculated data, allowing determination of optimum values of induction and frequency of the alternating field, at which the coefficient of wire melting at submerged-arc surfacing (welding) is increased. 8 Ref., 4 Figures.
Keywords: arc surfacing (welding), transverse magnetic field, induction, electrode melting coefficient, frequency, calculation procedure

 
Received: 06.03.19
Published: 16.05.19

References

1. Razmyshlyaev, A.D. Ahieieva, M.V. (2018) Effect of transverse magnetic field on weld geometry in repair of products. Visnyk Pryazov. DTU, 44, 77-79 [in Russian].
2. Razmyshlyaev, A.D., Ahieieva, M.V. (2018) TMF influence on weld structure at the welding of 12Kh18NT. Mat. Sci. Forum, 927, 1-5. https://doi.org/10.4028/www.scientific.net/MSF.927.1
3. Razmyshlyaev, A.D., Ageeva, M.V. (2018) On mechanism of weld metal structure refinement in arc welding under action of magnetic fields (Review). The Paton Welding J., 3, 25-28. https://doi.org/10.15407/tpwj2018.03.05
4. Morozov, V.P. (2006) Analysis of conditions of refined structure formation in crystallization of weld pool metal under superposition of external periodic perturbations. Izv. Vuzov. Mashinostroenie, 8, 41-54 [in Russian].
5. Razmyshlyaev, A.D., Vydmysh, P.A., Ahieieva, M.V. (2018) Automatic submerged-arc welding under action of external magnetic field. Mariupol, PGTU [in Russian].
6. Razmyshlyaev, A.D., Serenko, A.N., Vydmysh, P.A., Ahieieva, M.V. (2015) Calculation of transverse magnetic field providing drop detachment from electrode tip in arc surfacing. Visnyk Pryazov. DTU, 30, 7-14 [in Russian].
7. Razmyshlyaev, A.D., Ahieieva, M.V. (2018) To calculation of numerical values of induction of transverse control magnetic field in head part of welding pool. Nauka ta Vyrobnytstvo: Transact., 19, 51-59 [in Russian]. https://doi.org/10.15407/tpwj2018.07.03
8. Akulov, A.I., Belchuk, G.A., Demyantsevich, V.P. (1977) Technology and equipment of fusion welding: Manual for students of higher education institutes. Moscow, Mashinostroenie [in Russian].

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