用氯化铵作硬化剂硬化型壳,这种方法有很多优点,但在硬化过程中放出大量铵气,使环境污染,影响工人健康,同时氯化铁水溶液对设备有严重的腐蚀性。近年来,用氯化铝代氯化铵作硬化剂,已在精铸行业被采用。为在生产中更好地掌握运用,将有关氯化铝硬化剂的性能、工艺特点等介绍如下。 Ammonium chloride as hardener hardened shell, this method has many advantages, but in the hardening process emit a large amount of ammonium gas, so that environmental pollution, affecting workers’ health, while the ferric chloride solution on the equipment has serious corrosion. In recent years, with ammonium chloride chloride as hardener, has been used in the casting industry. In order to better grasp the use of production, the performance of aluminum chloride hardener, process characteristics are described below.