ＡＯＤ炉炉温在线检测的研究与实现

针对AOD红外副枪测温法中多种不确定背景辐射导致的发射率波动问题，提出了基于双色测温原理和黑体等温空腔理论的底枪测温法，稳定了铁水的发射率．应用基于最小二乘法的曲线回归实现红外测温设备的现场校准，完成温度补偿．通过在样炉上的精炼实验证明底枪测温系统具有较高的精度和可重复性，可以满足实际生产的要求．

Research on and implementation of online temperature measurement for an AOD furnace

Directed at the fluctuation of the emissivity induced by several kinds of uncertain background radiations in the AOD infrared sub lance method, a kind of bottom lance method has been put forward in this paper based on the colorimetric temperature measurement theory and the blackbody isothermal cavity theory, so that the emissivity of the hot metal could be kept stable. The curvilinear regression based on the least square method is applied in a sample space to perform the field calibration and the temperature compensation of the equipment. The experiment carfled out on a prototype shows a high precision and a good reproducibility, thus the bottom lance measurement system can meet the demands of actual manufacture.