Based On The Online Induction Heating Rod Wire Without Rolling Finite Element Simulation

This paper is based on an industrial production line of 45# high-speed wire with Φ6.5mm. In this paper, we transformed the traditional heating furnace to the induction heating furnace, with the purpose of saving energy and reducing environment pollution. Finite element simulation was used to establish the induction heating- rolling process model. The change of temperature in the induction heating process was simulated. And the temperature, the equivalent strain and the change of rolling force in the roughing rolling process were also simulated. The results show that, before induction heating, the temperature of the casting blank reduced gradually from the core to corner. Then the temperature of the casting blank increased when it enter the induction coil, especially in the edges and corners, reaching the finishing rolling temperature. In the rolling process, the temperature and equivalent strain in different area of the casting blank were nonuniform. The temperature was increase from the surface to the core gradually, which is opposite to the equivalent strain distribution in the the casting blank. The value of the rolling force was related to the rolling-start temperature and rolling reduction. When the rolling process was steady,the rolling force would vary in a certain range, and it would reach the least rolling force at the sixth rolling passes.Then,we analyzed the process of induction heating-roughing rolling at the temperature of 950, 1000, 1050 and 1100 ℃. The rolling temperature, equivalent strain and rolling force were different at different surface temperature. When the surface temperature was 950 ℃, the rolling force show the largest value. When the surface temperature is low, the section of the casting blank deformed relatively uniform, the core of the casting could deform easier.When the casting began to bite into the rolls, the largest equivalent strain distributed at the surface layer in the isothermal temperature rolling process, while it distributed at the surface layer and core in the non-isothermal temperature rolling process. At the end of the rolling, the equivalent strain increased from the surface to the core in the isothermal temperature rolling process. Nevertheless, for the non-isothermal temperature rolling process, the largest equivalent strain distributed at the core and the sub-surface layer. Therefore, in the non-isothermal temperature rolling process, the distribution of equivalent strain was uniform, and the deformation of casting was uniform too.