Acoustic characteristics of electric arc furnaces
- 作者: Cherednichenko V.1, Bikeev R.1, Cherednichenko A.2, Ognev A.2
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隶属关系:
- Novosibirsk State Technical University
- OAO Sibelectrotherm
- 期: 卷 2016, 编号 6 (2016)
- 页面: 509-516
- 栏目: Manufacture of Ferrous and Nonferrous Metals
- URL: https://journals.rcsi.science/0036-0295/article/view/170605
- DOI: https://doi.org/10.1134/S0036029516060045
- ID: 170605
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详细
A mathematical model is constructed to describe the appearance and development of the noise characteristics of superpower electric arc furnaces. The noise formation is shown to be related to the pulsation of the axial plasma flows in arc discharges because of the electrodynamic pressure oscillations caused by the interaction of the self-magnetic field with the current passing in an arc. The pressure in the arc axis changes at a frequency of 100 Hz at the maximum operating pressure of 66 kPa for an arc current of 80 kA. The main ac arc sound frequencies are multiples of 100 Hz, which is supported in the practice of operation of electric arc furnaces. The sound intensity in the furnace laboratory reaches 160 dB and is decreased to 115–120 dB in the working furnace area due to shielding by the furnace jacket, the molten metal, and the molten slag. The appropriateness of increasing the hermetic sealing of electric furnaces and creating furnaces operating at low currents and high transformer voltages is corroborated.
作者简介
V. Cherednichenko
Novosibirsk State Technical University
编辑信件的主要联系方式.
Email: gk@therm.ru
俄罗斯联邦, pr. Karla Marksa 20, Moscow, 630073
R. Bikeev
Novosibirsk State Technical University
Email: gk@therm.ru
俄罗斯联邦, pr. Karla Marksa 20, Moscow, 630073
A. Cherednichenko
OAO Sibelectrotherm
Email: gk@therm.ru
俄罗斯联邦, ul. Petukhova 51, Novosibirsk, 630088
A. Ognev
OAO Sibelectrotherm
Email: gk@therm.ru
俄罗斯联邦, ul. Petukhova 51, Novosibirsk, 630088