铸造用纸质浇道管是代替陶瓷浇道管的理想产品，属于纸浆模塑制品。 纸质浇道管包含数十种不同的材 料，对模具有特定的设计要求。研究了不同的表面处理、滤网以及排气孔的设置，结果表明不同于一般的纸浆模塑制品， 纸质浇道管的整型模具不能增加滤网，排气孔需要隐藏在加强筋内，并且模具表面粗糙度应介于1.6~3.2μm，以匹配永 久性或半永久性脱模剂的应用。

Casting paper runner pipe was an ideal substitute for ceramic runner pipe, which belongs to pulp molded products. The paper runner pipe contained dozens of different materials and had specific design requirements for the mold. Different surface treatment, filter screen and exhaust hole were studied. The results show that the finishing mold of paper runner pipe cannot add the filter mesh with different from the general pulp molding products, the vent hole needs to be hidden in the reinforcing rib, and the mold surface roughness should be within the range of 1.6~3.2, to match the application of permanent or semi-permanent release agent.