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通过物理模拟对结晶器保护渣的卷渣情况进行了分析研究,得出:低粘度保护渣发生卷渣的临界表面流速为87.7 mm/s,保护渣浸入结晶器液面的临界深度为22 mm;高粘度保护渣发生卷渣的临界表面流速为101.2 mm/s,保护渣的临界浸入深度为25 mm。当表面流速大于对应的临界值,从而使得保护渣的浸入深度超过临界深度时,才可能发生卷渣现象;结晶器卷渣一般发生在距结晶器窄面1/3的位置处。
Through the physical simulation, the slag flux of mold powder was analyzed. The results showed that the critical surface velocity of flocculant with low viscosity flux was 87.7 mm / s, the critical depth of immersion powder in the mold was 22 mm ; The critical surface flow rate of entrainment slag with high viscosity powder was 101.2 mm / s, and the critical immersion depth of mold flux was 25 mm. When the surface flow rate is greater than the corresponding critical value, so that the immersion depth of the mold powder exceeds the critical depth, entrainment phenomenon may occur; the mold slag usually occurs at a position 1/3 away from the narrow side of the mold.