MECHANISM OF HIGH-TEMPERATURE CORROSION OF HEAT-RESISTANT CHROMIUM-NICKEL STEEL
https://doi.org/10.17073/0368-0797-2016-3-180-184
Abstract
Macro and micro studies of grate have been carried out at different stages of operation to determine the cause of drastically reduce of service life of the grate kiln trolleys of 40H24N12SL steel due to the changed operating conditions. The study determined the percolation mechanism of corrosion destruction of parts during operation, determined by the course of intergranular corrosion in steel during the operation period of more than 3 months. The authors defi ned surfaces of the part in which the ICC process has the greatest intensity. The estimation of the impact of operating mode of grates on the course of intergranular corrosion is determined. The ways to improve the grates quality are revealed.
Keywords
corrosion,
diff usion,
fi re bars,
steel,
defects,
microstructure,
service life,
intergranular corrosion
About the Authors
D. I. Ivanov
Lebedinskii Mining and Processing Works, Gubkin-11;
Stary Oskol Technological Institute of National University of Science and Technology “MISiS”
Russian Federation
Russian Federation
Technologist;
Postgraduate
A. A. Kozhukhov
Stary Oskol Technological Institute of National University of Science and Technology “MISiS”
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor, Head of the Chair “Metallurgy and Metal Science named after S.P. Ugarova”,
Stary Oskol
L. F. Urazova
Stary Oskol Technological Institute of National University of Science and Technology “MISiS”
Russian Federation
Russian Federation
Senior Lecturer of the Chair “Metallurgy and Metal Scien ce named after S.P. Ugarova”,
Stary Oskol
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Review
For citations:
Ivanov D.I., Kozhukhov A.A., Urazova L.F. MECHANISM OF HIGH-TEMPERATURE CORROSION OF HEAT-RESISTANT CHROMIUM-NICKEL STEEL. Izvestiya. Ferrous Metallurgy. 2016;59(3):180-184. (In Russ.) https://doi.org/10.17073/0368-0797-2016-3-180-184
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