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通过理论推导及对有关文献中实验事实的分析，认为现在普遍采用的描述冶金熔体发泡能力的泡沫化指数表征的是熔体发泡能力与泡沫衰减能力的比例关系，在物理意义和数值大小上都不等同于泡沫寿命；泡沫化指数受外界几何条件的影响，并非熔体的本征物理化学性质；影响冶金熔体泡沫化的许多内禀因素没有被泡沫化指数涵盖，因此用其作为冶金熔体发泡能力的可靠判据，仍缺乏充分的理论和实验依据．
Through the theoretical derivation and the analysis of the experimental facts in the relevant literature, it is considered that the commonly used foam index, which describes the foaming ability of metallurgical melts, expresses the proportional relationship between the foaming ability of the melt and the foam decay ability. In terms of physical meaning and value Its size is not equivalent to the life of the foam; foam index by the external geometry conditions, not the intrinsic physical and chemical properties of the melt; many intrinsic factors affecting the foaming of the metallurgical melt foam index is not covered, so with its As a reliable criterion for foaming capacity of metallurgical melt, there still lacks sufficient theoretical and experimental evidence.