Compared with traditional counter gravity casting technique, the technique combining with appropriate gating system makes great contributions to the enhancement of mechanical property of castings.
相比传统的反重力铸造技术，该技术配合合适的浇注系统对铸件性能有明显的改善作用。
2
The casting technique with top gating system, outer shaped iron chill, compound casting mold and core assembly molding was used for producing aluminum impeller on a large scale successfully.
详细介绍了采取顶注式浇注系统、成形外冷铁、复合铸型、组芯造型的铸造工艺，成功地生产出批量铝叶轮。
3
Moreover, experiment characterization of pulses two femtosecond pulses by the frequency-resolved optical gating (FROG) characterization technique is also given.