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本文介绍一种吸气少,除渣性能好和变质效果优良的多功能变质剂-SR-HD。铝硅合金经SR-HD变质后,除共晶组织显著改善外,α(AI)亦得到明显的细化。对厚大铸件变质效果稳定,合金机械性能提高,变质保持时间比普通钠盐变质剂增加。
In this paper, we introduce a multifunctional modifier -SR-HD with less suction, good slag removal performance and excellent metamorphism. Al-Si alloy by SR-HD metamorphism, in addition to significantly improve the eutectic structure, α (AI) has also been significantly refined. On the thick castings metamorphic effect is stable, improve the mechanical properties of alloys, metamorphic retention time than the average sodium salt modifier increased.