The Research On Forecasting System Of High Speed Wire Rod's Temperature And Microstructure

With the advancement in modern science and technology, wire production is in pursuit of accurate control of the internal microstructure and ultimately performance. During rolling process, the wire temperature is a very important factor which can direct affect the reasonable distribution of rolling load, accuracy of the final product and microstructure performance. The arrest's influence on temperature can't be neglected either. So, accurate prediction of the rolling line in the wire temperature changes and the final microstructure is effective in improving the quality of products.Firstly, as the difference of wire rod cross-section shape, we've done some reasonable simplification, established a basic model of temperature. Differential heat conduction equations are derived in a two-dimensional and one-dimensional. And based on these, we've established the corresponding difference equations.Secondly, as the difference of rolling cases in different mills, such as rough mill, intermediate mill, pre-finishing mill and finishing mill, different models have been established. We've also done analysis of water-cooled heat transfer conditions, based on the differences of instance of running in and out water tank, determined respective heat transfer coefficients and built water cooling model.Thirdly, built a coupled model of temperature and microstructure. We've established phase equilibrium temperature of ferrite and pearlite, calculated the start temperature of each arrest, change rate, latent heat and temperature distribution.Finally, the program of forecasting system is prepared using MATLAB, with great advantage, program interface is compiled using GUI. This makes the forecasting system to achieve the function of human-computer interaction. The introduction of Instance verified the accuracy of the forecasting system's prediction...