Print

2021 №11 (03) DOI of Article
10.37434/tpwj2021.11.04
2021 №11 (05)

The Paton Welding Journal 2021 #11
The Paton Welding Journal, 2021, #11, 22-28 pages

Comparison of the processes of electroslag welding at power connection by mono- and bifilar circuits

yu.M. lankin, V.G. Soloviov, V.G. Tyukalov, I.yu. Romanova


E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: lankin.y.n@gmail.com

Abstract
Electroslag welding (ESW) with wire electrodes with a bifilar circuit of power connection is not applied now. There is every reason to believe that such a connection circuit has even more advantages over the monofilar ESW. Therefore, additional special investigations of the process of bifilar ESW are required. A comparison is given of the process of electroslag welding at power connection by the monofilar circuit and by the bifilar circuit with equalizing wire and doubling of secondary voltage. The results of comparison of both the ESW circuits by energy consumption are given; regularities of heat evolution in the slag pool at the change of its geometrical parameters, coordinates of the points and depth of immersion of the electrodes, value of voltage applied to the electrodes and electrode feed rate were studied.
Keywords: electroslag welding, bifilar circuit, slag pool, metal pool, electric conductivity

Received 13.09.2021
Accepted: 29.11.2021

References

1. Medovar, B.I., Stupak, L.M., Bojko, G.A. et al. (1976) Electroslag furnaces. Ed. by B.E. Paton, B.I. Medovar. Kiev, Naukova Dumka [in Russian].
2. Jing, Xie (2008) Structure advantage of a 5-t double pole series circuit electroslag furnace. Heavy Casting and Forging, 5(3), 43–45 [in Chinese].
3. Xi-min, Zang, Tian-yu, Qiu, Xin, Deng et al. (2015) Industrial test of a 6-m long bearing steel ingot by electroslag remelting with drawing process. China Foundry, 12(3), 202–207.
4. Tezuka, M., Yamamoto, S., Takahashi, F. et al. (2014) Internal quality of 2150 mm diameter ingot manufactured using new 150-ton ESR furnace. In: Proc. of 19th Int. Forgemasters Meeting (IFM). (Tokyo, Japan, 29.09–03.10), 90–94.
5. Son, I., Lee, W., Sim, Kw. et al. (2014) Installation of 150-ton new ESR facility and production of 120-ton ESR ingot for 12Cr HIP rotor forgings. Ibid., 333–337.
6. Kubin, M., Scheriau, A., Knabl, M. et al. (2013) Operational experience of large sized ESR plants and attainable quality of ESR ingots with diameter of up to 2600 mm. Proceedings of the International Symposium on Liquid Metal Processing & Casting (LMPC). Austin (Texas, USA), 22-25 September, pp. 57-64. https://doi.org/10.1007/978-3-319-48102-9_8
7. Lankin, Yu.N., Moskalenko, A.A., Tyukalov, V.G. et al. (2008) Application of electroslag welding in construction and in repair of metallurgical assemblies. Svarshchik, 1, 6–9 [in Russian].
8. Gukhman, A.A. (1973) Introduction to similarity theory. 2nd Ed. Moscow, Vysshaya Shkola [in Russian].
9. Sorokin, V.G., Volosnikova, A.V., Vyatkin, S.S. et al. (1989) Grades of steels and alloys. Ed. by V.G. Sorokin. Moscow, Mashinostroenie [in Russian].

Suggested Citation

yu.M. lankin, V.G. Soloviov, V.G. Tyukalov, I.yu. Romanova (2021) Comparison of the processes of electroslag welding at power connection by mono- and bifilar circuits. The Paton Welding J., 11, 22-28.