无公害精炼剂变质剂问世以来,在我国许多工厂被用于铸造铝合金的除气变质处理。然而随着研究工作的不断深入以及生产实践的积累,人们对该精炼变质剂提出了不同的看法。为此我们也进行了这方面的探讨。结果如下。 Pollution-free refining agent since the advent of the advent of many factories in our country is used for the degassing treatment of aluminum casting. However, with the deepening of research work and the accumulation of production practices, different opinions have been put forward on the refined modifier. To this end, we also conducted this discussion. The result is as follows.