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CN107849934A 在燃气涡轮机的超合金铸件中形成冷却通道 失效 - 放弃专利权

在燃气涡轮机的超合金铸件中形成冷却通道
摘要：
在熔模铸造期间通过在铸造模具(152)内使用陶瓷壳插入件(130)在用于燃气涡轮发动机的部件比如叶片(92)、轮叶(104、106)、环区段(110)或过渡件(85)中的铸件中形成冷却通道(99、105)。形成在陶瓷壳插入件(130)中的陶瓷柱(134)的轮廓与部分完成的冷却通道(156)的对应轮廓相符合。柱(134)在超合金部件的铸件之后被移除以形成部分完成的冷却通道，随后通过沿着冷却通道路径移除剩余的超合金材料来完成部分完成的冷却通道。
摘要（英）：

Cooling passages (99, 105) are formed in components for combustion turbine engines, such as blades (92), vanes (104, 106), ring segments (110) or castings in transitions (85), during investment casting, through use of ceramic shell inserts (130) within the casting mold (152). Ceramic posts (134) formed in the ceramic shell insert (130) have profiles conforming to corresponding profiles of partially completed cooling passages (156). Posts (134) are removed after superalloy component casting, forming the partially completed cooling passages, which are subsequently completed by removing remainingsuperalloy material along the cooling passage path.

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