湿型砂再生用于制芯的前景湿型再生砂质量必须达到新砂质量或超过新砂质量才能用于制芯。如果不完全洁净的湿型再生砂用于制芯，砂粒表面的多孔层会吸收粘结剂而使芯砂强度低甚至为零强度。湿型砂中常含碱芯砂残余物（主要为Ｎａ２Ｏ和Ｋ２Ｏ）难于用摩擦法去除，采用热法... Wet Sand Recycling Prospects for Making Core Wet reclaimed sand quality must reach new sand quality or exceed fresh sand mass for core making. If not completely clean, wet recycled sand for core making, the porous layer on the surface of the sand absorbs the binder and gives a low or even zero core sand strength. Wet sand often contain alkali sand residue (mainly Na2O and K2O) is difficult to remove friction method, the use of thermal method ...