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介绍了消失模工艺生产DN300法兰旋启式止回阀阀体浇冒口系统设计,以及消失模模样制作、埋型、浇注等主要工艺参数的合理选择。珠粒预发密度为23～26kg/m3,模具成型,采用五面抽气负压砂箱,带液压夹紧机构的变频三维震实台,浇注负压控制在0.05～0.06MPa范围内,保压5min。
Introduced the lost foam die production DN300 Flange Swing Check Valve body Riser system design, as well as the EPC production, Buried, pouring and other major process parameters reasonable choice. Bead pre-density 23 ~ 26kg / m3, mold forming, using five suction negative pressure flask, with hydraulic clamping mechanism frequency three-dimensional shock table, pouring negative pressure control in the range of 0.05 ~ 0.06MPa, Paul Pressure 5min.