一、前言陶瓷型精密铸造,是近十来年发展起来的,深受国内外铸造工作者重视的铸造新工艺之一。它具有铸件表面光洁,尺寸精度较好,成本低,周期短,上马快和制造方便等许多优点,所以在模具和大型精密铸件的生产中得到了较为广泛的应用。但是长期以来,在叛徒、内奸、工贼刘少奇的反革命修正主义路线的干扰下,这项新工艺一直没有得到较大的发展。它存在的许多 I. INTRODUCTION Ceramic precision casting is one of the new casting technologies that has been developed by the domestic and foreign foundry workers since it was developed in the past decade. It has many advantages such as smooth and smooth casting surface, good dimensional accuracy, low cost, short cycle, quick start and easy manufacture, so it has been widely used in the production of molds and large precision castings. However, for a long time, under the interference of the renegade, inmate, and work thief Liu Shaoqi’s counter-revolutionary revisionist line, this new process has not been greatly developed. Many of its existence