Calculation of the characteristics of electric-arc heating of a gas

I. I. Suksov

doi:10.1007/bf00913582

Strategy of automation of electric arc heating of steel melt in ladle-furnaceStrategy of automation of electric arc heating of steel melt in ladle-furnaceStrategy of automation of electric arc heating of steel melt in ladle-furnace

Ferrous Metallurgy Bulletin of Scientific Technical and Economic Information ◽

10.32339/0135-5910-2021-1-20-27 ◽

2021 ◽

Vol 77 (1) ◽

pp. 20-27

Author(s):

E. B. Agapitov ◽

M. A. Lemeshko ◽

M. S. Sokolova

Keyword(s):

New Technology ◽

Electric Energy ◽

Ladle Treatment ◽

Electric Arc ◽

Ladle Furnace ◽

Energy Supply System ◽

Heating Efficiency ◽

Melt Treatment ◽

Electric Arc Heating ◽

Arc Heating

Prices hike for consumable materials and energy carriers, increase of requirements to steel quality stipulate the items of intensification of ladle treatment processes and decrease of their energy- and material capacity. Analysis of energy losses in ladlefurnace accomplished, as well as basic factors effecting the energy costs during treatment analyzed. A methodology elaborated for making thermal balance of ladle-furnace: it was proposed to present the melt treatment process in ladle-furnace as a series of separate operations, each having specific features of the process (heating, desulphurization, alloying) and their combination. Based on analysis of 20 thousand heats passports at ladle-furnace of MMK BOF shop, a mathematical model of energy supply system of ladle-furnace was elaborated. Based on the analysis made, a strategy of heating automation was proposed. In particular, electric losses were emphasized, t. e. total losses of electric arc energy, in which provisionally losses at arc open part radiation were included. Control of those flows creates conditions for heating efficiency increase. Conclusions were made that decrease of electric losses is observed at prolonged (about 8−12 min) heating periods and sufficient amount of slag, as well as at injection of additives after heating. Such a mode provides decrease of thermal losses by 4−5%. A new technology of steel melt treatment in ladle-furnace was proposed, characterized by decreased consumption of electric energy.

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Stimulated emission at 18.4μfrom a gasdynamic CO2laser with electric-arc heating

Soviet Journal of Quantum Electronics ◽

10.1070/qe1981v011n06abeh007052 ◽

1981 ◽

Vol 11 (6) ◽

pp. 784-786 ◽

Cited By ~ 1

Author(s):

D G Bakanov ◽

A A Vedeneev ◽

A Yu Volkov ◽

A I Demin ◽

A A Infimovskaya ◽

...

Keyword(s):

Electric Arc ◽

Stimulated Emission ◽

Electric Arc Heating ◽

Arc Heating

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Use of electric-arc heating of steel in oxygen-converter production

Metallurgist ◽

10.1007/s11015-008-9001-7 ◽

2008 ◽

Vol 52 (1-2) ◽

pp. 14-16

Author(s):

O. A. Nikolaev ◽

D. N. Chigasov ◽

S. V. Meshcherov ◽

A. A. Stepanova ◽

M. V. Kosarev

Keyword(s):

Oxygen Converter ◽

Electric Arc ◽

Converter Production ◽

Electric Arc Heating ◽

Arc Heating

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Effect of Taper Angle of the Optical Fiber Microprobe in Power Collection

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.403-408.3387 ◽

2011 ◽

Vol 403-408 ◽

pp. 3387-3391 ◽

Cited By ~ 2

Author(s):

Wan Maisarah Mukhtar ◽

P. Susthitha Menon ◽

Sahbudin Shaari

Keyword(s):

Optical Fiber ◽

Optical Power ◽

Electric Arc ◽

Maximum Power ◽

Taper Angle ◽

Electric Arc Heating ◽

Arc Heating ◽

Angle Probe

The objective of this experiment is to study the effect of taper angle of the optical fiber microprobe in power collection. Optical fiber microprobes with taper angle from 10° to 23° were fabricated using the automatic fusion splicer by applying one-sided pulling and electric arc heating technique. It was found that the maximum power detected by a small taper angle probe was only -34.22dBm. The highest optical power collected by the optical fiber microprobe in this study was -25.01dBm with taper angle of 22.9°. Large taper angle probe receives more light at the tip which increases the sensitivity of the probe.

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