在生产线上对热轨钢板的温度进行测定,是控制产品质量的重要步骤。其中发射率——ε值的在线测定是个关键问题,同时又是实践中感觉棘手的问题。多年来,有关ε值的在线测定方法已有过不少研究报道,其中较为实用的是使用兰德(Land)表面高温计,我国武钢、宝钢都引进了它。按照该表说明书介绍,测量钢材表面的发射率,需要用镀金的反射罩和镀 In the production line on the hot rail temperature measurement, is an important step in the control of product quality. Among them, the emissivity - the online determination of the value of e is a key issue, and it is also a problem that is actually difficult to feel in practice. Over the years, there have been many reports about the on-line determination of ε value. Among them, it is more practical to use the Land surface pyrometer which has been introduced by China’s WISCO and Baosteel. In accordance with the introduction of the table manual, measuring the emissivity of the steel surface, the need to use gold-plated reflector and plating