目前型砂湿度的自动检测和自动控制的方法颇多,但这些方法都不能反映型砂实际的造型性能。我们根据型砂的过筛原理设计了一种型砂成型性自动控制器(简称控制器),用来达到检测和控制型砂性能的目的(即筛法水控)。该控制器已使用近一年,对控制型砂的性能起到了良好的作用。本文介绍了控制器的原理与结构,并着重介绍了在调试和使用中的情况。 At present, there are many methods for automatic detection and automatic control of mold sand humidity, but none of these methods can reflect the actual molding performance of molding sand. According to the principle of sifting of sand, we designed a sand forming automatic controller (controller) to achieve the purpose of testing and controlling sand properties (ie, sieve water control). The controller has been in use for nearly a year and has played a good role in controlling the performance of sand. This article introduced the principle and structure of the controller, and emphatically introduced the situation in debugging and using.