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通过调节Li2CO3、Na2CO3以及BaCO3等助熔剂的含量,测定了不同材料组成无氟保护渣的熔化温度、粘度以及电导率,分析了无氟保护渣电导率与其它物理性能之间的关系,以此来选取实验配方最佳助熔剂加入量。结果表明:无氟保护渣的熔化状态对其导电性能有着直接影响,通过熔化温度及粘度的变化可以直接推断出保护渣电导率的变化规律,添加10%硼砂、3%碳酸锂、15%碳酸钠以及9%碳酸钡能够使实验配制的无氟保护渣具有良好的导电性能。
By adjusting the content of fluxes such as Li2CO3, Na2CO3 and BaCO3, the melting temperature, viscosity and conductivity of the fluorine-free fluxes with different materials were determined. The relationship between conductivity and other physical properties of fluorine-free fluxes was analyzed. To choose the best experimental flux formula. The results show that the melting state of FFC has a direct influence on its electrical conductivity. The variation of conductivity of the mold flux can be inferred directly by the change of melting temperature and viscosity. Adding 10% borax, 3% lithium carbonate, 15% Sodium and 9% barium carbonate can make the experimentally prepared non-fluoride mold flux have good conductivity.