前言:目前,由于水玻璃砂旧砂回收利用的问题尚未妥善解决,高碱度废砂会污染环境;用于树脂砂的树脂价格偏高,难于大量应用。所以,粘土干型砂是我国铸造行业使用的重要砂种。但在生产中对影响粘上砂干强度的因素看法不一。为稳定型砂质量,了解影响粘土干型砂工艺性能的诸因素,通过正交试验,得出了置信度较高的干、湿强度回归方程和相对适宜水分回归方程,以指导本厂生产。 Preface: At present, due to the problem of recycling sodium silicate sand has not yet been properly solved, high alkalinity waste sand polluting the environment; resins for resin sand high prices, difficult to use in large quantities. Therefore, clay dry sand is an important sand used in China’s foundry industry. However, in the production of sand on the impact of sticky dry strength of different opinions. In order to stabilize the quality of sand and understand the factors that affect the process performance of clay dry sand, the regression equation of dry and wet strength with higher confidence and the relative suitable moisture regression equation were obtained by orthogonal test to guide the production of our factory.