摘要
以高氟化钙渣 ANF-6 和无氟化钙渣 A_1 为例,研究了它们比电导、导热系数、粘度对电渣重熔过程电耗的影响。研究表明:在1500～1900℃时 ANF-6 渣比电导比 A_1 渣高3～10倍;A_1 渣的电效率比 ANF-6 渣提高 10.2％;A_1 渣的总热阻值比 ANF-6 渣大1倍,可减少热损失,提高热效率;在 1600℃下 ANF-6 渣粘度值比 A_1 渣小 10倍左右,渣粘度大传热慢,可提高热效率。可见,低比电导、低导热系数、高粘度渣有利于提高电效率,降低电耗。
Effects of the specific conductance.thermal conductivity and viscosity of slags,such as ANF-6 and A1 .on the powder consumption in electroslag remelting process were investigated. The results show that at 1500-1900'C the specific conductance of ANF-6 is 4-11 times higher than that of A1 .wereas the electrical efficiency of A1 is 10. 2% higher than that of ANF-6. With respect to the total thermal resistance. A, is double what ANF-6 is.thus reducing the heat loss with thermal efficiency enhanced. At 1600℃ .furthermore.the viscosity of ANF-6 is about 11 times less that of A1 so A1 will enhance thermal efficiency since high viscosity will result in slow heat-transfer. It is thus concluded that slags with low specific conductance and thermal conductivity and high viscosity are advantageous to the improvement of electrical efficiency and the reduction of power consumption.
关键词
粘度
导热系数
电耗
电渣溶炼
electroslag remelting,specific conductance,viscosity,thermal conductivity,powder consumption.
