download PDF
Abstract
The article discusses the solution to a practical problem of controlling the temperature gradient in a rolling roll during heat treatment in order to predict and prevent the destruction of the product in a thermal furnace. A set of technological measures is presented to eliminate cracking in a rolling roll made of high-chromium cast iron. The effect of insulation of the ends of a rolling roll during heat treatment on the temperature gradient is considered. The results of the forecast of the maximum temperature gradient depending on the insulation parameters are presented: the option of placing the insulation at the end of the product in the area where the roll neck adjoins its barrel, as well as the thickness of the thermal insulation. Calculation shows the most optimal insulation of the end of the rolling roll, leading to a decrease in the temperature gradient across the cross section of the product. It is also shown which insulation option does not have a significant effect on the temperature gradient.
Keywords:
rolling roll, working layer, temperature gradient, heat treatment, cracking
Yumabayev Azamat A. – Assistant professor of the Department, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Savinov Alexander S. – D. Sс. (Eng.), Professor, Metallurgy, Head of Mechanical Engineering and Materials Processing 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..
Feoktistov Nikolay A. – PhD (Eng), Associate Professor, Head of the Department, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Skripkin Evgeniy V. – graduate student Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Troyanov Andrey V. – student of Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia.
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Chernov Viktor P. – D. Sс. (Eng.), Professor, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Dubrovin Vitaly K. – D. Sс. (Eng.), Associate Professor, South Ural State University, Chelyabinsk, Russia.
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
