近来,树脂砂越来越多的应用到铸造行业中。为了满足引进产品部分铸件生产需要,自八二年九月开始试验,到目前已基本达到试验目的。一、树脂种类的选择目前,铸造行业所用树脂都具有各自的特点,根据我厂情况,认为应用酚醛树脂比较合适。酚醛树脂的技术指标见表1。 Recently, resin sand more and more used in the casting industry. In order to meet the needs of the production of castings for some of the imported products, the trial started in September 1982 and has basically reached the test purpose so far. First, the choice of resin types At present, the resin used in the casting industry has its own characteristics, according to our plant situation, that the application of phenolic resin more appropriate. Phenolic resin technical indicators in Table 1.