壳芯砂用酚醛树脂热性能及覆膜工艺的研究

Study of Heating Properties of Resin and Coated Core-making Processes

研究了壳芯砂用酚醛树脂及覆膜砂在受热条件下性能的变化。实验确定了酚醛树脂固化、交联的温度条件，采用优化覆膜工艺，提高了覆膜砂的性能．

Properties of phenolic resin and coated sand are studied under heating conditions.Thetemperature conditions of hardening and networking are found out by testing properties andthe coated processes are presentecl。