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选取常规用保护渣和高拉速用优化保护渣研究了其高温结晶性能与玻璃质渣膜回温结晶性能.研究表明,优化后的高碱度保护渣具有较高的结晶温度和较低的脱玻化温度,同等实验条件下析晶能力更强,结晶相主要为枪晶石(3CaO.2SiO2.CaF2),并且晶粒粗大,凝固组织中有大量空隙,渣膜表面粗糙度大,有利于增加渣膜热阻,更适合于高拉速生产.
The conventional high-speed mold powder and high-speed casting slag were used to study the high-temperature crystallization performance and the crystallization performance of glass-based slag film.Research shows that the optimized high basicity mold flux has higher crystallization temperature and lower Under the same experimental conditions, the crystallization ability is stronger, the crystal phase is mainly gunite (3CaO.2SiO2.CaF2), and the crystal grains are coarse, there are a lot of voids in the solidification structure, and the surface roughness of the slag film is large. There are Help increase the thermal resistance of the slag film, more suitable for high-speed production.