消失模铸造借用型腔作浇道研究

Study on the Using Mold Cavity as Runner of EPC Casting

为了减少消失模铸造浇注过程金属液带人的热量损失,简化浇注系统是有效措施之一。铸钢件排碳法浇注工艺,钢液从冒口注入,从形式上而言,无浇注系统,实际上是将型腔作为浇注系统,是借用型腔作浇道。结果表明,借用型腔作浇道,浇口从冒口或铸件的顶部直接引入实现了顶注优先工艺。金属液进入型腔后,直接落底,然后液面水平上升,实现铸件下部温度低,顶部温度高的正向热场。这是消失模铸造值得研究和推荐的工艺。

In order to reduce the heat loss of molten metal during EPC casting,simplified casting system was one of the effective measures.Casting technology of steel casting with carbon emission method,steel liquid was injected from riser,in terms of form,there was no casting system,in fact,the mold cavity was used as the casting system,and the mold cavity was used as the gate.The results show that the best technique of top injection is realized by using the mold cavity as the gate and the gate is directly connected to the top of the riser or the casting.After the gold liquid enters the mold cavity,it falls directly to the mould bottom,and then the liquid level rises,which shows the positive thermal field with low temperature at the bottom and high temperature at the top of the casting.This is a process worthy of research and recommendation.