圆坯连铸结晶器温度场模拟与坯壳厚度预测

基于连铸圆坯结晶器温度与热流实测数据,建立了连铸圆坯凝固的三维传热模型,计算出结晶器和铸坯的温度场,并得到铸坯的固相率与坯壳厚度分布情况.温度计算结果与实测数据符合较好,表明此数学模型能够较为准确地反映实际情况.讨论了拉速、浇注温度等因素对坯壳厚度的影响,并对利用模型计算与经验公式计算得到的坯壳厚度进行了对比.     

神经元网络应用于圆坯连铸结晶器传热计算

以圆坯连铸结晶器温度实测数据为基础,研究应用神经元网络求解结晶器传热反问题的可行性,并尝试将神经元网络与数值计算结合用于结晶器传热计算,探索针对实测数据的结晶器传热在线计算方法.结果表明,数值计算结果与实测温度符合较好,可真实反映实际生产中圆坯结晶器传热的非均匀特性.     

基于CETOL平台的中国聚变工程实验堆真空室三维公差分析

The tolerance analysis of China Fusion Engineering Test Reactor vacuum vessel is performed using the CETOL tolerance analysis software based on the CATIA platform. Based on the three-dimensional solid model, the assembled targets of the vacuum vessel are simplified and subdivided. Tolerances are assigned according to the overall assembly requirements of the vacuum vessel, and tolerance analysis models are established. The critical dimensions affecting the target tolerances have been determined through the sensitivity and contribution, and the unreasonable tolerances have been redistributed to meet the tolerance requirements of the component, which is very useful to ensure the assembly quality of the vacuum vessel.