随着铸造生产机械化、自动化水平的不断提高,型砂需要量越来越大,旧砂循环时间大大缩短,在砂处理过程中出现了“热砂”问题。一般认为:高于工作环境温度20℃以上的型砂为“热砂”。大多数工厂的实践证明,型砂的适宜温度为不高于工作环境温度10℃左右。我们在总结本厂冷却热砂的经验,又参考了国内外 With the casting mechanization and continuous improvement of automation level, the requirement of molding sand is getting larger and larger, the recycling time of old sand is greatly shortened, and the problems of “hot sand” appear in the process of sand treatment. Generally believed that: higher than the working temperature of 20 ℃ above the sand as “hot sand.” The practice of most factories proves that the suitable temperature of molding sand is not higher than the working environment temperature about 10 ℃. We have summed up our experience in cooling hot sand, but also for reference at home and abroad