本文概略介绍了气流实砂原理。通过试验证明气流实砂在普通6～8kg/cm~2的压力下,不需补充压实即可制成硬度高而均匀、型板利用充分的优质铸型;紧实过程无震动,能耗低,噪音小,生产率高。本文对实砂中一些工艺因素进行了探讨,证明气流实砂适用于各种粘土型砂,是一种理想的实砂新工艺。 This article gives an overview of the airflow sand theory. It is proved through experiments that the sand of the air current can be made into a high hardness and uniform without compaction and compaction under normal pressure of 6-8 kg / cm ~ 2, and the mold plate makes full use of good quality molds; without vibration and energy consumption Low, low noise, high productivity. In this paper, some technological factors of real sand are discussed, which proves that it is suitable for all kinds of clay sand, which is an ideal new technology of solid sand.