The sand casting process of EPC equipment is as follows:

First, pre-foam

Polystyrene beads are typically pre-advanced to a suitable density by rapid heating of the steam.

Second, model molding

The pre-expanded particles are first stabilized and then fed into the mold cavity. During the sand casting process, the mold cavity passes through the steam, softens the beads, expands, and pushes all the voids and rods.

Third, the models are clustered together

Before using the model, you must save it for the appropriate amount of time (hours to days) to stabilize it before you paste it into the module.

Fourth, the model family dip coating

The model clusters were immersed in a refractory coating and then dried in an air circulating oven at about 30 to 60 °C for 2-3 hours. After drying, the model cluster is placed in a flask filled with dry sand vibration and compaction (usually vacuum negative pressure to make the sand body compact), and all model communities must be tightly supported in the pores and external dry sand.

Sand casting process

Five, pouring and melting

After pouring the metal into the mold, the model material evaporates at a high temperature, and its space is replaced by metal to form a casting.

Six, sand cleaning

After casting, the casting is solidified in a flask and cooled, then sanded and cleaned.

The sand casting process of EPC equipment will gradually replace the old black sand sand casting processing, resin sand sand casting processing and other sand casting processing methods with its high precision, low cost and good working environment, which means that there will be a good The future development, let us wait and see!