(1)酚醛氨基甲酸乙脂胺冷芯盒制芯工艺法,简称三乙胺法(PUCB)。是1968年美国铸造协会年会首先作为新工艺介绍给各国铸造工业的,这是冷芯盒工艺法的起步,二十多年来有了持续不断的研究与发展并走向逐步提高与完善。①PUCB工艺方法。该工艺材料的组分包括三部分:Ⅰ是酚醛树脂;Ⅱ聚合异氰酸盐[脂]以及催化剂。在混砂过程中,使砂粒为组分Ⅰ及Ⅱ所包复,即 (1) Phenolic urethane amine cold box core making process, referred to as triethylamine method (PUCB). 1968 American Foundry Association annual meeting first introduced as a new process to all countries foundry industry, which is cold-box method of starting, more than 20 years has been a continuous research and development and to gradually improve and perfect. ① PUCB process method. The composition of the process material consists of three parts: Ⅰ is a phenolic resin; Ⅱ polymeric isocyanate [lipid] and catalyst. In the sand mixing process, the sand is made up of components I and II, ie