针对喷射成形的雾化喷嘴,在喷射小孔中引入Laval结构,同时采用双向进气设计.选用Al-Si合金和Finemet合金成分样品,进行新喷嘴应用试验.对比传统直管喷嘴,新型雾化喷嘴获得了更大的气体喷射速度,提高了喷射成形的G/M比.此外,双向进气结构获得了较为理想的气压分布,其雾化效果得到改善,收集到的坯体在形貌、性能上有所突破,特别是Finemet成分合金出现了非晶相.
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