Construction And Performance Analysis Of Tungsten Mesh Vacuum Furnace Twins

With the current rapid development of computer technology,China’s industry is in the stage of transformation to digitalization and informationization,while China is also growing from a large industrial manufacturing country to a strong industrial manufacturing country.Vacuum heat treatment equipment is an indispensable part of the current industrial production.Vacuum heat treatment is a new type of heat treatment technology that combines heat treatment technology and vacuum technology,and heat treatment in a vacuum environment can greatly improve the quality of heat treatment.The performance of the equipment directly determines the level of heat treatment process and has a profound impact on the quality of the product.In the study of the performance of vacuum furnace,the temperature field is always the focus of research.If the distribution of the temperature field in the vacuum furnace can be mastered and applied,it is of great importance to the structural design of the furnace,the manufacturing process of the product and the production quality of the enterprise.This paper takes tungsten mesh vacuum furnace as the research object,and combines the digital twin technology to establish the digital twin model of vacuum furnace,which realistically restores the actual size of vacuum furnace,and can map the temperature distribution inside the furnace under the actual operating conditions of the physical entity,and can simulate the whole process of heating in each part of the vacuum furnace.This paper takes the tungsten mesh vacuum furnace produced by a company as the twin object,and firstly,the main components of the thermal field of the furnace are designed and described,and the design parameters of the vacuum furnace are used as the modeling basis of the twin.And the virtual verification of the thermal field components of the vacuum furnace twin was realized by finite element analysis.Subsequently,the real heating element power of the vacuum furnace physical equipment is used as the input value of the twin,and the temperature values of the temperature measuring thermocouples in each part of the vacuum furnace thermal field are used as the output value of the twin to analyze the working performance of the digital twin.And the measured data are compared with the output results of the twin to further verify the correctness of the overall twin model of the tungsten grid vacuum furnace.The main work of the article is as follows:(1)The structural design and description of the main components of the tungsten grid vacuum furnace hot field including the heating element,the metal insulation screen and the water-cooled furnace shell were carried out,and the digital twin models of the corresponding components were established in Inventor.(2)In ANSYS Workbench simulation software,the heating element is analyzed for heating,the metal heat insulation screen is analyzed for radiation heat transfer,and the water-cooled furnace shell is analyzed for structural strength,and the design rationality of the twin is verified virtually by means of finite element analysis.(3)Establish the overall twin model of the tungsten mesh vacuum furnace,and use the power of the heating element in the actual operation as the input of the twin simulation model after processing to get the temperature distribution of the vacuum furnace twin.(4)The no-load temperature test is performed on the tungsten grid vacuum furnace according to the set process curve.The measured temperature data were compared with the twin simulation temperature data,and it was verified that the twin model can highly simulate the temperature distribution of the real physical equipment and restore the whole heating process of the vacuum furnace.