介绍了用消失模铸造工艺制备液压单向阀的浇注系统与冒口设计。珠粒预发密度选取为23~26 kg/m3,采用EPS模具成型;合理控制埋型与浇注工艺参数,制得表面光洁、内壁光滑、尺寸准确的液压阀件。 The casting system and riser design of hydraulic one-way valve with lost foam casting process are introduced. The pre-densification of beads was selected as 23 ~ 26 kg / m3, and the EPS mold was used for molding. The parameters of burying and pouring were controlled reasonably, and the hydraulic valve with smooth surface, smooth inner wall and accurate size was obtained.