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铸型材料 在铸造车间中用各种材料来制作外模和砂芯。它们按条件不同可分为铸型原材料、外模砂和芯砂(或混合料),以及铸型辅助混合料。铸型原材料可分为两类;基料和辅料。第一类包括耐火材料,例如构成基材的石英砂,和粘结剂,例如粘土、树脂等。第二类包括赋予外模砂和芯砂所需性质的各种附加物,例如煤粉、木屑等。外模砂和芯砂
Casting materials In the foundry, various materials are used to make the outer form and core. According to their different conditions can be divided into the mold raw materials, the outer mold sand and core sand (or mixture), and mold auxiliary mixture. Mold raw materials can be divided into two categories; base materials and accessories. The first category includes refractory materials, such as quartz sand which constitutes the substrate, and binders such as clays, resins and the like. The second category includes various appendages such as pulverized coal, sawdust and the like, which impart the desired properties to the outer molding sand and core sand. Exterior mold sand and core sand