MATHEMATICAL MODELING OF THE THERMO-STRESSED CONDITION IN THE COLD WORK ROLLS DURING FAST HEATING IN THE CHAMBER FURNACE
https://doi.org/10.17073/0368-0797-2015-9-696-702
Abstract
A physical-and-mathematical pattern of calculation of the thermo-stressed condition of the cold work roll, being heated in the chamber fast (gradient) heating furnace for hardening of the working layer of the certain depth, has been demonstrated. The heating furnace consists of two sliding halves and is connected with the spraying unit. A roll subjected to heating runs on rollers and rotates during heating and hardening. Two heating conditions: forced one and more rational one, under which a speed of the roll heating is limited at the initial stage, have been compared. The authors have offered a steptype schedule of increasing the heating medium temperature during roll heating at which the maximum tensile stress does not exceed an acceptable value of 300 MPa. It is recommended to limit a heating speed at the initial stage of heat treatment to reduce the thermal stress.
About the Authors
M. D. Kazyaev
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Professor of the Chair “Thermal Physics and Informatics in Metallurgy”,
19, Mira str., Ekaterinburg, 620002
Yu. A. Samoilovich
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor, Chief Researcher of Laboratory of heating furnaces,
19, Mira str., Ekaterinburg, 620002
V. S. Paleev
“UralTermoKompleks” Scientific and Production Company
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Chief Specialis,
23, of. 306-308, Posadskaya str., Ekaterinburg, Sverdlovsk Region, 620137,
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Review
For citations:
Kazyaev M.D., Samoilovich Yu.A., Paleev V.S. MATHEMATICAL MODELING OF THE THERMO-STRESSED CONDITION IN THE COLD WORK ROLLS DURING FAST HEATING IN THE CHAMBER FURNACE. Izvestiya. Ferrous Metallurgy. 2015;58(9):696-702. (In Russ.) https://doi.org/10.17073/0368-0797-2015-9-696-702
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