本文讨论垂直分型无箱湿砂造型技术及其经济性的有关问题；为此以铝质进气管铸件为例进行分析．证明湿砂铸造的成本低于其它常规铸造方法。 This article discusses the vertical sub-type box-free wet sand molding technology and its economic issues; To this end, aluminum intake pipe castings as an example for analysis. It proved that the cost of wet sand casting is lower than other conventional casting methods.