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 display temperature 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 实验检测表明，这种利用marchingcubes算法对炉膛内空间温度场进行分段线性化处理的方法，在一定的精度范围内是有效的。炉膛内部温度场的图像显示使得对热处理炉膛内部温度场的分析更简单、直观，使我们更有效的对热处理炉的炉膛温度进行观测、控制，从而提高热处理工件的质量，具有较高的实用价值。
