底漏包浇注泡沫单折弯缓冲浇道在圆锥破上室的应用

Application of Foam Single Bend Buffer Runner for Bottom Leakage Bag Pouring in Conical Top Chamber

消失模铸造极少使用于底漏钢液包浇注,案例中随型倾斜切入浇注系统,符合消失模铸造"三场理论"指导下"圆形件及筒管状铸件斜向切入"的內浇道切入原则。浇道折弯可有效的缓冲金属液的惯性冲击,为使用底漏钢液浇包提供有利条件。随型倾斜切入的内浇道可减缓钢液对型壁的冲击,流场合理,热量丢失少,当钢液液面和水口平行时,倾斜切入可使钢液在惯性力的作用下顺型壁旋转使顶部钢液热量均衡,更有利于提高各冒口的补缩效果。

Epc was rarely used in bottom ladle casting.In the case,the casting system was tilted with the mold,which was in accordance with the inner gate entry principle of"oblique entry of circular parts and bobbin castings"under the guidance of"three field theory"of EPC.The runner bending can effectively buffer the inertia impact of metal liquid,which provides a favorable condition for the use of bottom leakage ladle.The inner gate cut in with the inclination of the mold can reduce the impact of molten steel on the mold wall,with reasonable flow field and less heat loss.When the liquid steel level and the nozzle are parallel,the inclined cut can make the molten steel rotate in the shape of the wall under the action of inertia force to balance the heat of the molten steel at the top,which is more conducive to improving the feeding effect of each riser.