下阀体的铸造工艺和生产

Casting Process and Production of Lower Valve Body

综合分析了铸钢下阀体的结构和铸造工艺.由于下阀体结构复杂,生产时必须采取预埋砂芯、分层浇注、采用铬铁矿砂和保温冒口(覆盖剂),及加强补缩等技术措施,生产出了合格的下阀体铸件,可为同类铸件的生产提供参考.

Configuration and casting process for lower valve body made of cast steel were overall analyzed. Because of the complex configuration of the lower valve body, some technical measures, such as superimposing sand core, layer-by-layer pouring ,use of both chromite sand and hot topping (coating), and strengthening feeding, must be adopted in the producing. By so doing, the qualified lower valve body castings have been fabricated, which may give a reference to production of similar castings.