材料成型与控制技术专业毕业论文 浅析缸体类铸件对造型材料性能的要求.doc

浅析缸体类铸件对造型材料性能的要求 摘要：凡是用来制作造型的原材料（如原砂、粘结剂、附加物等）以及由各种原材料所混制的混合物统称为造型材料。铸件的一些缺陷如砂眼、气孔、粘砂夹砂等，都与造型材料有直接关系，在铸造生产中80%左右的铸件是用砂型铸造生产的产生1吨铸件通常要4-5吨型砂，造型材料在铸造生产中占有非常重要的地位。 Abstract: all used to make modeling of raw materials (such as the original sand, binders, affix etc) and by various raw materials have mixing mixture collectively referred to as modeling materials. Some of the castings defect such as sand holes, porosity, adhering sand clip sand, and molding materials have immediate concer