The structure of EPC mold is a mold with two cavities and one piece for the first mock examination. EPC mold can basically meet the requirements of EPC casting. At the same time, it is possible to cast castings with multiple cavity shapes, but do not always assume that the disappearing mold is integrally formed. In fact, in order to meet the needs of disappearing mold casting, the mold can be divided into blocks and then bonded and combined. Therefore, we can say that the shape of disappearing mold is basically not limited by any conditions.

Lost foam casting is a new process technology with nearly no allowance and accurate forming. It does not need to close the box and take the mold. It uses dry sand molding without binder to reduce pollution. It is made of foam plastic into a full mold with the same structure and size as the parts. The manufacturing process is to dip the foam plastic mold with fire-resistant adhesive coating, dry the mold after drying, vibrate and compact it, and then pour the metal liquid into the mold to make it evaporate when heated. After * * *, the metal parts with the same shape can be obtained.

Lost foam casting is characterized by low cost of foam plastic pattern material, convenient bonding and combination of patterns, and easy gasification and disappearance, which overcomes the problem of investment deformation caused by easy softening of investment casting pattern material. It can significantly reduce casting defects such as shrinkage, porosity, and porosity in castings, improve casting density, and improve mechanical properties of castings.