Andreev S.M., Akhmetov T.U., Nuzhin D.V., Parsunkin B.N. Automated Control System of Fuel Saving in Asymmetric Heating of Continuous Cast Billets Before Rolling

DOI: 10.18503/2311-8318-2016-3(32)-60-65

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Abstract

The article describes the results of theoretical and practical implementation in real industrial conditions of automatic system of fuel-efficient control, which realize the asymmetric mode of heating of continuous cast slab blanks in a continuous furnace in unsteady operating conditions of broadband hot rolling mill. Considering the significant heat losses in lower zones of heating, the system of control realizes depending on real industry situation differentiated distribution of supply of fuel in the upper and lower zones of heating of furnace in proportions 0.8-1.0 depending on the temperature of moving blanks along the length of the furnace. The coefficient of asymmetric distribution of heating loads between upper and lower zones changes from 1.0 at maximum productivity of the furnace (symmetrical heating) up to 0.8 when the productivity of the furnace is 20% of the maximum. The control of fuel-efficient mode of heating in the upper zones is carried out by the surface temperature of the heated metal, which is measured by the optical pyrometer. In the lower zones the control is executed on the temperature of the working space and measured by thermocouples in carborundum protective glasses.

Keywords

Fuel saving, asymmetric distribution of fuel, temperature of surface, guaranteed heating, surface temperature of metal.

Sergey M. Andreev

  • Ph.D. (Eng.), Associate Professor, Head of the Department, Automated Control Systems Department, Power Engineering and Automated Systems Institute, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

Timur U. Akhmetov

  • Post-graduate student, Limited Liability Company "ISC". E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

Dmitriy V. Nuzhin

  • Post-graduate student, Automated Control Systems Department, Power Engineering and Automated Systems Institute, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia.

Boris N. Parsunkin

  • D.Sc. (Eng.), Professor, Automated Control Systems Department, Power Engineering and Automated Systems Institute, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

1. Genkin A.L., Kudelin A.R. Problems of Energy-saving Control of Sheet Mill. Part 1. Problemy upravleniya [Control sciences], 2006, no.6, pp. 50-54. (In Russian).

2. Andreev S.M., Parsunkin B.N. Optimizatsiya rezhimov upravleniya nagrevom v pechakh prokhodnogo tipa: monografiya [Optimization of Control Modes of Heating Furnaces Transmission Type. Monograph]. Magnitogorsk, Nosov Magnitogorsk State Technical University Publ., 2013, 375 p.

3. Genkin A.L. Information Capacity of Power Parameters in Controlling the Temperature and Speed Mode of Hot Strip. Avtomatizatsiya v promyshlennosti [Automation in Industry], 2008, no.8, pp.45-48. (In Russian).

4. Tayts N.Yu. Tekhnologiya nagreva stali [Steel Heating Technology]. Moscow, Metallurgizdat Publ., 1962. 557 p.

5. Arutyunov V.V., Bukhmirov V.V., Krupennikov S.A. Matematicheskoe modelirovanie teplovoy raboty promyshlennykh pechey [Mathematical Modeling of Thermal Performance of Industrial Furnaces]. Moscow, Metallurgiya Publ., 1990, 239 p.

6. Makovskiy V.A., Lavrentik N.N. Algoritm upravleniya nagrevatelnymi pechami [Control Algorithm of Heating Furnaces]. Moscow, Metallurgizdat Publ., 1977, 184 p.

7. Pontryagin L.S., Boltyanskiy V.G., Gapkrelidze R.V. Matematicheskaya teoriya optimalnykh protsessov [Mathematical Theory of Optimal Processes]. Moscow, Nauka Publ., 1969, 393 p.

8. Parsunkin B.N., Andreev S.M., Investigation of Energy-efficient Heating Mode of Cast Billets. Stal [Steel], 2007, no.4, pp.53-56. (In Russian).

9. Andreev S.M., Parsunkin B.N., Nuzhin D.V. Automatic Control System of Fuel-efficient Asymmetrical Metal Heating before Rolling in Contemporary Methodological Furnaces. Avtomatizatsiya i sovremennye tekhnologii [Automation and modern technology], 2010, no.1, pp.14-20. (In Russian).

10. Bandy B. Metody optimizasii [Optimization methods], 1988, 122 p.

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