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电极设计是电炉设计的重要内容之一。从不同的角度出发,可推导出不同的设计计算公式,设计出不同的电极以满足其预定的要求。对于碳化硅电阻炉电极来说,如果电极的轴向导热系数为λ,电阻系数为ρ,电流密度为i,电极的实际散热面积与截面积之比值为k,电极热端的温度为t_1,冷端温度为t_2,电极冷端周围空气的温度为t_f,电极冷端对空气的对流与辐射放热总系数为α_0,根据电阻炉电极的安装实况,作者曾于《碳化硅电阻炉的设计》一文中推导出电阻炉电极长度的求算公式如下:
Electrode design is an important part of EAF design. From a different perspective, different design and calculation formulas can be derived and different electrodes designed to meet their intended requirements. For the silicon carbide resistance furnace electrode, if the axial thermal conductivity of the electrode is λ, the resistivity is ρ, the current density is i, the ratio of the actual radiating area to the cross-sectional area of the electrode is k, the temperature of the hot end of the electrode is t_1, the temperature is cold The temperature of the terminal is t_2, the temperature of the air around the cold end of the electrode is t_f, the total coefficient of convection and radiant heat release of the cold end of the electrode is α_0. According to the installation actuality of the electrode of the resistance furnace, The article deduces the resistance furnace electrode length of the formula is as follows: