一种电子回焊炉的炉温曲线模型

Furnace Temperature Curve Model of an Electronic Reflow Furnace

摘要: 在实际工业生产中，回焊炉内并不是恒温，而是根据处理工件的流程划分了不同的温区。在已知某种电子回焊炉部分内部温度数据的基础上，通过数据分析，提出了“工件在炉内升温和降温速率与它和各温区的温差有关”的假设。由此得出了升温速率与温差的函数关系式。此关系式可以应用于矫正各温区交界处的实际温度。进一步地，还可以将原始数据代回，以温度变化速率为决策变量，建立线性规划模型，根据实际需要控制工件的过炉速度，达到节能的效果。

Abstract: In actual industrial production, the temperature in the reflow furnace is not constant, but different temperature zones are divided according to the process of processing workpieces. On the basis of knowing some internal temperature data of an electronic reflow furnace and through data analysis, the hypothesis that “the heating and cooling rate of workpiece in the furnace is related to the temperature difference between it and each temperature zone” is put forward. The functional relationship between heating rate and temperature difference is obtained. This relationship can be applied to correct the actual temperature at the junction of each temperature zone. Furthermore, the original data can be substituted, and the linear programming model can be established with the temperature change rate as the decision variable to control the passing speed of the workpiece according to the actual needs, so as to achieve the effect of energy saving.