从砂型顶面压实,不能有效地紧实砂型底部,对铸件质量不利。底面压实,虽能有效地紧实底部型砂,但会产生另外的问题,例如必须改变模板或难以控制压力。作者采用了一种叫作“模板压实造型”的新方法,两面压实型砂,以消除传统方法所遇到的问题。 Compacted from the top of the sand, the sand bottom can not be effectively compacted, adversely affecting the quality of the castings. Bottom compaction, while effectively compacting the bottom sand, poses additional problems such as the need to change the template or to control the pressure. The authors adopted a new method called “template compaction modeling” that involves compacting sand on both sides to eliminate the problems encountered with traditional methods.