用超声波加速砂芯的干燥是众所周知的,但是目前最吸引入的还是干芯砂。于芯砂就是包复上水玻璃、纸浆废液、KBC、酚醛树脂、木沥青、煤的造型材料混合物。这样的芯砂用超声波来硬化制芯能减少粘结剂的用量,提高砂芯的表面和整体强度,改善劳动条件。将实验用的砂子包复上含有残留水量为0.1～0.5%的水玻璃、ССБ、КВС,同时把砂子与 It is well known to accelerate the drying of sand cores with ultrasonic waves, but the most attractive one is dry sand sand. The core sand is coated with water glass, pulp waste, KBC, phenolic resin, wood asphalt, coal molding material mixture. Such core sand with ultrasonic hardening core can reduce the amount of binder to improve the core surface and overall strength, improve working conditions. The experimental sand coated with water on the residual water content of 0.1 to 0.5% of water glass, ССБ, КВС, while the sand and