为确定设备局部热处理工艺，建立了可提供破坏性检测的热处理试板，通过边界条件分析，确定了热处理试板与过程设备等效的边界条件，采用经过实验验证的ANSYS热分析数值模拟方法对热处理试板和对应的过程设备热处理过程进行分析，得到二者加热和保温后的温度场分布基本一致，可通过对热处理试板进行热处理实验确定热处理工艺，进而得到过程设备的热处理工艺。由于热处理试板制作工艺复杂，利用范围窄，为提高其利用率，采用热力学计算和传热计算，建立不同材料和不同厚度热处理试板热处理工艺的计算公式，经过等效使得一种材料和厚度热处理试板可模拟多种材料和厚度试板确定热处理工艺。研究结果表明，热处理试板壁厚方向温差随壁厚的增加而增加，当壁厚超过120mm后，若采用单面加热，可能无法由于内外壁温差过大导致热处理失败；不同材料热处理试板存在比热和导热系数的差别，也存在热处理温度的差别，比热越大、热导率越低、热处理温度越高的材料需要更长的热处理时间同时消耗更多能量。

To determine the local heat treatment technique, a heat treatment test plate which can provide destructive test was established. Through the boundary condition analysis, the equivalent boundary conditions of the heat treatment test plate and the process equipment were determined. The numerical thermal analysis method of ANSYS software validated by the experiment was adopted to analyze the heat treatment process of heat treatment test plate and the corresponding process equipment. The results prove that temperature distribution of the test plate after heated and holding temperature are agree with that of the equipment. Therefore, it is feasible to obtain the heat treatment technique of the equipment by using the experiment result of the test plate. However, the manufacturing processes of the test plate are complicated, and thus it is uneconomical if using one time. In order to expand its utilization rate, the thermodynamic and heat transfer calculation methods were used to establish the formulas of the test plate of different material and different thickness. By using these formulas, the heat treatment techniques of equipment with different material and different thickness can determined by one test plate. It is known from the results that the temperature difference in the thickness direction of the test plate increases with the increase in thickness. When the thickness exceeds 120mm, the heat treatment may fail because the excessive temperature difference between the two sides if single-sided heating method was used. Properties such as specific heat capacity and thermal conductivity are different for different materials, and the heat treatment temperatures are also different. The larger specific heat capacity, lower thermal conductivity and higher heat treatment temperature takes longer heat treatment time and consumes more energy.

TG156.1