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加热室是真空渗碳炉的核心部分。炉温均匀性及工件加热效率等参数是衡量真空炉性能的重要指标,加热室设计直接影响炉子的使用性能和生产效率。本文基于有限元计算平台,建立真空渗碳炉加热过程的数学模型,对不同加热室参数及整体输出负荷下的温度场进行模拟及预测,确定了加热管数量、加热管外径及整体输出负荷对工件温度均匀性及加热效率的影响规律。结果表明:适当地增加加热管数量、合理选择加热管外径和整体输出负荷能提高工件的加热速率,降低工件的温差。
Heating chamber is the heart of the vacuum carburizing furnace. Furnace temperature uniformity and workpiece heating efficiency and other parameters is an important indicator of the performance of the vacuum furnace, the design of the heating chamber directly affect the furnace performance and production efficiency. Based on the finite element calculation platform, the mathematical model of the heating process of vacuum carburizing furnace is established. The temperature field under different heating chamber parameters and the overall output load is simulated and predicted. The number of heating tubes, the outer diameter of the heating tube and the overall output load On the workpiece temperature uniformity and heating efficiency of the law. The results show that increasing the number of heating pipes properly, choosing reasonable heating tube outer diameter and overall output load can increase the heating rate of the workpiece and reduce the temperature difference of the workpiece.