Numerical simulation analysis of medium-low temperature heat-treating furnace

The control of temperature field uniformity of heat-treating furnace is the key to affect the whole heat treating process. Due to the change of the structure of the heat-treating furnace, the entire temperature distribution in the furnace will change, and affect the utilization efficiency of gas, and then affect the quality of the heat treatment workpiece and the economy of the hot processing process. The design of the traditional heat-treating furnace structure is based on experience, and the improvement of the temperature uniformity in the furnace can only be adjusted on the basis of practical experience, and it is impossible to systematically obtain the influence law of the structure on the temperature in the furnace. There is no reliable theoretical guidance for the design process of the heat-treating furnace structure, and the distribution of the temperature field and flow field in the furnace cannot be obtained. In this study, a finite element analysis method is proposed to coupling multiple heat transfer processes, including: fuel combustion process, convection heat transfer process of flue gas in the furnace body, heat conduction process of the furnace wall and radiation heat transfer process in the furnace body were numerically simulated and analyzed according to the EDM finite reaction model in Fluent, the standard k-ε turbulence model and the implicit coupling, and the temperature field and flow field distribution in the furnace were obtained.