科研之友
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摘要
Roll profile electromagnetic control technology (RPECT) is a new technology for obtaining flexible roll profile curves. Based on induction heating technology and using the thermally driven and internal constraint mechanism of an electromagnetic stick, the technology cleverly converts the energy of induction heating into a thermal-mechanical hybrid power source, thus greatly improving the degree of roll profile control. However, in the process of roll profile control, during roll heating, the phenomenon of roll uniform temperature may appear, which may affect the roll profile curves. The stability of the roll profile after changing is the core problem addressed by the described technology. Therefore, based on a (empty set)270 mm x 300 mm roll profile electromagnetic control experimental platform, an electromagnetic-thermal-mechanical coupled axisymmetric model is established by using the finite element software MSC.MARC. The effect of different cooling intensities on the roll temperature and the effect of the roll temperature on the roll profile are analysed through experiments and simulations in the process of cooling after continuous heating and during periodic heating after continuous heating. The results show that roll uniform temperature appears in the roll during roll profile control, which seriously affects the roll profile curves. The phenomenon of roll uniform temperature can be effectively inhibited by controlling the temperature of the electromagnetic stick and establishing a reasonable roll surface cooling intensity, and its effect on the roll profile can be eliminated.
- 出版日期2018-5
- 单位燕山大学
