从砂处理系统改造谈型砂性能控制

Control of Sand Properties by Sand Processing System Reform

为了提高和稳定生产线的型砂质量，对砂处理系统设备进行了整体改造，分析了型砂性能的影响因素。通过严格控制型砂性能指标，提高了型砂质量，使有效膨润土与水分比、紧实率与水分比趋于合理，铸件落砂、气孔废品率大幅下降。

The sand processing equipments were reformed to improve and stabilize the sand quality of product line, and the influencing factors of sand performance were analyzed. The sand quality is improved by the control of sand properties, and the ratio of effective bentonite content and moisture content, the ratio of compactability and moisture content are more reasonable. The rejection rate of crush and blowhole is reduced greatly.