Based On MSC.Marc Photovoltaic Glass Rolling Forming Numerical Simulation And Experimental Research

In the country,the state shall encourage the development of new energy,solar energy photovoltaic industry get rapid growth.The solar cell industry with the development of photovoltaic industry is also rapid development,and the photovoltaic glass is one of the raw materials of solar cells,also which is important one annulus in the photovoltaic industry.Rolling method is used to produce photovoltaic glass products,glass is easy to appear crack,air bubble,deformation and other defects,may it even has been crystal phenomenon,serious impact on the transmittance and the intensity of the photovoltaic glass,etc.Therefore,finite element MSC.Marc software is used to simulate the complex heat transfer problem in glass calendering,and the temperature variation of glass during the rolling process is analyzed.Function at the same time,the MSC.Marc software for secondary development to simulate the glass molding,the microstructure changes in research on changes of the glass crystallization.At the same time,the function of MSC.Marc software was developed twice to simulate the change of microstructure in glass forming,and the change of glass crystallization was studied.Which provides the basis for the optimization of glass calendering process parameters and the deepening of glass crystallization theory,and has important theoretical and practical significance to improve the quality of photovoltaic(pv)glass products.In view of the above problems,this paper has carried out a series of research work.In this paper,the photovoltaic glass rolling forming process and its crystallization behavior is simulated and experimental study.Firstly,the research status of glass forming is briefly introduced,and the basic process of photovoltaic glass calendering and the basic theory and method in the finite element simulation of glass calendering are introduced.Based on the basic theory of heat transfer,based on the complexity of PV glass calendering process,the glass forming process has made some assumptions.On this basis,a three-dimensional mathematical model of glass calendering process is established,the relevant data set to the solution model,the simulation of the glass in the molding process of the temperature field distribution.In the case of other process conditions unchanged,the impact of different pressure roller is on the impact of glass molding.Secondly,based on the crystallization theory of glass and the model of Unman crystal analysis,a two-dimensional model is established.The secondary development function of MSC.Marc software is used to build the relevant development environment,and the code program of glass crystallization is written in Fortran language.The crystallization behavior of glass in the glass calendering process was simulated and analyzed,and the crystallization temperature range of the glass was deduced to realize the visualization of the change of the microstructure of the glass.Glass microstructure changes in-depth study has important guiding significance.Finally,the experimental method was developed.The surface temperature of the glass ribbon during the molding process was tested by using the temperature measuring tool,and the simulation results were verified by experiments to verify the reasonable and correctness of the simulated glass heat transfer problem.