利用数值模拟开发涡轮增压器壳体铸件

介绍了汽车发动机中涡轮增压器壳体铸件的结构及技术要求,利用自动化线壳型铸造,一型2件,水平分型,采用封闭式浇注系统,浇口比为ΣF直:ΣF横:ΣF内=2:1.5:1,其中,直浇道截面面积为1 200 mm2,横浇道截面面积为900mm2,内浇道截面面积为600 mm2。热侧冒口直径为65 mm,高度为100 mm,冒口颈尺寸为23 mm×33 mm;顶冒口直径为50 mm,高度为70 mm,冒口颈尺寸为10 mm×25 mm,并在涡轮室内部圆形平面处放置尺寸为50 mm×15 mm×15 mm的随型冷铁,使生产的铸件冒口颈区域微观缩松消除。

Developing Turbocharger Casting Case by Numerical Simulation

The structure and technical requirements of automobile turbocharger casting case were introduced. Automatic shell mold casting and vertical typing techniques were used. The casting was a choked running system with one type and two pieces. The pouring gate,runner gate and flow gate is 1 200 mm2,900 mm2 and 600 mmE,respectively. So the gating ratios are ∑Fflow： ∑Frunner=∑Fpousring=2：1.5：1. The diameter and height of hot side-riser were 65 mm and 100 mm. The size of its riser neck is 23 mmx 33 mm. The diameter and height of top-riser were 50 mm and 70 mm. The size of its riser neck was 10 mm×25 mm. A chill with the size of 50 mm×15 mm×15 mm was used on the round plane inside the turbine chamber. It eliminated the micro shrinkage on riser neck area.