树脂自硬砂铸造新工艺在我国应用已有十余年历史。在机床、泵、阀、机械、石油机械、造船等行业的铸件生产中已得到推广。到目前为止,在我国采用树脂砂工艺生产铸件或正准备采用的厂家已有数百家之多,其中规模较大、采用成套设备、形成生产的也有百余家以上。在这些厂中,购买国外成套设备的约有60余家。树脂自硬砂铸造新工艺生产过程一般包括型砂混制、造型、振动落砂、旧砂破碎、磁选筛分、旧砂再 Resin self-hardening sand casting new technology in China has more than 10 years of history. In the machine tools, pumps, valves, machinery, petroleum machinery, shipbuilding and other industries in the casting production has been promoted. So far, there are hundreds of manufacturers in China that use resin sand process to produce castings or are preparing to adopt them. Among them, the large-scale ones use complete sets of equipment to form more than one hundred homes. In these plants, about 60 sets of equipment are purchased abroad. Resin self-hardening sand casting new process The production process generally includes molding sand mixing, modeling, vibration falling sand, broken old sand, magnetic screening, old sand and then