介绍了用微机控制和改进配砂系统；自行设计了ＭＣＳ－５１微机系统配置及其控制电路。该系统物料采用电子秤定量，输出电信号入计算机，实现自动称重和过程控制自动化。生产实践证明，该系统工作可靠、不受干扰，稳定性好，称量准确；型砂混制时，采用ＳＳＫＪ型砂水分自动控制仪控制加入水量。投产１年多来，该仪器实现了快速检测紧实率，并根据紧实率检测值反馈，控制调节加入水量，使型砂系统的紧实率稳定在紧实率设定值±２％范围内，获得了较佳的综合性能 Introduced the use of computer control and improve the sand system; designed its own MCS-51 microcomputer system configuration and control circuit. The system uses electronic scales quantitative materials, the output signal into the computer, automatic weighing and process control automation. Production practice has proved that the system works reliably, without interference, good stability, weighing accurately; sand mixing, the use of SSKJ sand water automatic controller to control the amount of water added. Put into operation more than a year ago, the instrument to achieve a rapid test of the compaction rate, and according to the test value of the compaction rate feedback, control the amount of water added to adjust, the compaction rate of the sand system stabilized at the tightness rate set value ± 2% range , Get a better overall performance