适用于湿砂工艺的陶瓷铸造砂

Green Sand Castings are castings made using wet sand or “green sand” molds. The sand is not green in color nor do the molds use “greensand,” a greenish color sandstone. Instead of the sand is called “green” because it has moisture in it (like green wood) before the sand dries out when molten metal is poured in the mold.

What gives the sand moisture and helps the sand stick together when making molds is the clay that is mixed in the sand. Bentonite clay and the sand mixed together provide strong molds that can be created on an automated assembly line.

烧结陶瓷砂是以含Al2O3、SiO2等矿物为主要原料，添加其他矿物材料，经制粉、制粒、烧结、级配等工序制成的球形铸造砂。其主要晶体结构为莫来石和刚玉，具有颗粒圆整、耐火度高、热化学稳定性好、热膨胀系数小、抗冲击、耐磨、破碎性强等特点。陶瓷砂在湿砂工艺中的应用，可以增加原砂的重复利用次数，减少废砂的排放，提高铸件的成品率。