一、前言传统观念普遍把金属看作灰体,对各波长入射辐射的反射率均很高,不存在选择性吸收,因此传统的标准电阻炉设计是以“封闭辐射”原理为依据,即只要把发热元件辐射出的热量封闭在炉内,迟早均会被金属工件所吸收,而炉墙则被当作蓄热库,采用厚壁重质耐火材料,故国产标准型号电阻炉的 First, the preface The traditional concept of the metal as a general gray metal, the incident radiation on the wavelength of the reflectivity are high, there is no selective absorption, so the traditional design of the standard resistance furnace is based on “closed radiation ” principle, That is, as long as the heating element heat radiation enclosed in the furnace, sooner or later, will be absorbed by the metal workpiece, and the furnace wall is used as a regenerator, the use of thick heavy refractory material, so the domestic standard type resistance furnace