Study Of Measuring And Displaying Temperature Field In The Space Of Hearth

As the development of science and technology, more and more workpieces need heat treatment in the manufacture field of metallurgy, mechanism, spaceflight, aviation . Furnace of heat treatment is the important equipment to achieve heat treatment technics. It's necessary to measure and control the temperature of furnace .In the past, temperature instrument could only display the temperature of some points during heat treatment. However, it is needed to display temperature in the space of hearth. A new perfect system should be researched to measure and display the space temperature of hearth. The thesis did for this purpose.In this thesis, used thermocouple to sense the temperature in the space of the hearth, attributed the thermocouple based on calorifics and scientific arithmetic, acquired data by data acquiring card, processed data according to the demand of setting up temperature model and drawing graphics and then caculated the coordinates of isothermal points and normals of isothermal facets, ascertained the order of connecting points and the model of construct ,drawed the isothermal facet of temperature field with OpenGL at last.The method of linearizing the temperature field in the space of hearth based on the arithmetic of Marching Cube is proved to be available within the analytical precision by experiment and testing result .It is valuable to measure and displaytemperature field in the space of hearth and to put it into practice .It is propitious to observe and control the temperature in the space of hearth efficiently. As a result, the quality of workpiece to be heat treated will be improved.