ON THE PROBLEMS OF CONTROL AND REDUCTION OF HIGH-TEMPERATURE LOSS OF STEEL IN HEATING FURNACES
https://doi.org/10.17073/0368-0797-2016-7-470-478
Abstract
The problem of assessment of the steel loss in the thickness of scale is considered for industrial furnaces. The possibilities of different ways to reduce steel oxidation are analyzed. Particular attention is paid to the attendant diffi culties of decrease of steel loss by reducing the oxidant consumption coeffi cient (n). The reality of achievement of substantially nonoxidative steel heating in industrial furnaces at present is shown. The author has highlighted their important technological characteristics: almost molecular mixing of the primary components of combustion (natural gas at n = 0.48 – 0.5), the synchronicity of the burners work and limit n deviation at regulation of primary combustion of fuel Δn ≤ 0,01, the eff ective jet-mechanical throttling of primary gas flow precluding the reverse circulation of the primary products of incomplete combustion from the post-combustion zone to the metal heating zone. Directions of design and work options of forging and rolling furnaces are proposed with the achievement of the relevant indicators for the reduction or complete suppression of steel loss. The problems of internal high-temperature oxidation of silicon of transformer steel are particularly analyzed as well as the nondecarburization heating of ball-bearing steel
About the Author
L. A. Shul’ts
National University of Science and Technology “MISIS” (MISIS), Moscow, Russia
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor of the Chair “Energy-Efficient and Resource-Saving Industrial Technologies
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For citations:
Shul’ts L.A. ON THE PROBLEMS OF CONTROL AND REDUCTION OF HIGH-TEMPERATURE LOSS OF STEEL IN HEATING FURNACES. Izvestiya. Ferrous Metallurgy. 2016;59(7):470-478. (In Russ.) https://doi.org/10.17073/0368-0797-2016-7-470-478
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