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公开(公告)号:US06845810B2
公开(公告)日:2005-01-25
申请号:US10269659
申请日:2002-10-11
摘要: Apparatus for the gravity-cast, “lost-foam” casting of metal castings, including a fugitive, pyrolizable foam pattern forming a casting cavity in a bed of loose sand, and a hollow sprue for supplying melt to the casting cavity, wherein the sprue consists essentially of the same metal as is being cast. A high-temperature, porous vent is provided adjacent the discharge end of the metal sprue to expel air from the sprue that would otherwise be trapped therein.
摘要翻译: 用于金属铸件的重力铸造“失去泡沫”铸造的装置,包括在松散砂床中形成铸造腔的逸出的可热膨胀的泡沫图案,以及用于将熔体供应到铸造腔的中空浇道,其中浇道 基本上由与铸件相同的金属组成。 在金属浇道的排出端附近设置高温多孔的排气口,以排出否则将被截留在其中的浇口的空气。