对覆膜砂主要原材料性能的研究分析

Research on Properties of Main Raw Material of Coated Sand

通过对覆膜砂主要原材料酚醛树脂及原砂性能分析，为深入研究覆膜砂性能提供参考，以求进一步提高覆膜砂的质量、降低成本，不断扩大覆膜砂的应用范围。

Analysis of phenol-formaldehyde resin and base sand, main raw material of coated sand, is made reference to forther work on its property for an improvement of qualily, reduction of cost and increasingly enlarged application.