低压铸造液面加压控制系统性能的好坏,直接影响铸件质量。现在有许多单位采用了针形阀式的液面加压控制系统,但在生产实践中普遍反映这种系统具有给压再现性差和压力上升线性性能不佳的缺点,并在一定程度上影响了工艺的稳定性和产品的质量。一九六九年底,我们和上海柴油机厂共同设计制造了一套随动式液面加压系统,在各有关单位协助下,于一九七○年秋季调试成功。经过八年时间的实地应用,共浇铸件达五万多 Low-pressure casting liquid pressure control system performance is good or bad, a direct impact on casting quality. Many units now use a needle valve type liquid level pressure control system, but in practice it generally reflects the poor reproducibility of pressure and pressure rise linearity of the poor performance of the shortcomings, and to some extent affected Process stability and product quality. At the end of 1969, we co-designed and manufactured a set of follow-up type liquid level pressurization system together with the Shanghai Diesel Engine Factory. With the help of all relevant units, we successfully commissioned the project in the autumn of 1970. After eight years of field application, a total of more than 50,000 castings