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Preparation method of hollow blade ceramic core mineralizer for aero-engine
The invention discloses a preparation method of a hollow blade ceramic core mineralizer for an aero-engine. The preparation method comprises the following steps: calcining zircon powder at high temperature for 4-7 hours, cooling, mechanically crushing, adding water into a wet ball mill together with round zirconium balls, carrying out ball milling, taking out the suspension, standing, precipitating, discharging the upper water, and baking the precipitated zircon powder in an oven to remove water, and uniformly stirring and storing in a closed container. According to the preparation method, themineralizer zircon powder is subjected to high-temperature calcination, so that doped oxide impurities are effectively reduced, and the state of the powder is more stable; the mineralizer zircon powder is calcined and then subjected to crushing and ball milling again through the wet ball mill, mineralizer powder matched with the granularity of the ceramic core base material is obtained, and the granularity of the mineralizer after ball milling can be well combined with the ceramic core base material; the crack phenomenon of the ceramic core after sintering is obviously improved, and meanwhile, the strength and the high-temperature creep resistance of the ceramic core are improved.
本发明公开了一种航空发动机用空心叶片陶瓷型芯矿化剂的制备方法，先将锆英粉高温煅烧4‑7h，冷却后机械破碎，在湿法球磨机中与圆锆球一起进行加水球磨，取出悬浮液静置沉淀后排出上层水，把沉淀的锆石粉置于烤箱内烘烤去除水分，搅拌均匀置于密闭容器保存，本发明将矿化剂粉料锆英粉经过了高温煅烧，有效降低参杂的氧化物杂质，让粉料的状态更加稳定；矿化剂锆英粉煅烧后经过湿法球磨机重新进行破碎球磨，获得与陶瓷型芯基体材料粒度相匹配的矿化剂粉料，球磨后矿化剂粒度能很好的和陶芯基体材料相互结合；明显的改善了陶瓷型芯烧结后裂纹现象，同时提高陶瓷型芯的强度和高温抗蠕变性能。
Preparation method of hollow blade ceramic core mineralizer for aero-engine
The invention discloses a preparation method of a hollow blade ceramic core mineralizer for an aero-engine. The preparation method comprises the following steps: calcining zircon powder at high temperature for 4-7 hours, cooling, mechanically crushing, adding water into a wet ball mill together with round zirconium balls, carrying out ball milling, taking out the suspension, standing, precipitating, discharging the upper water, and baking the precipitated zircon powder in an oven to remove water, and uniformly stirring and storing in a closed container. According to the preparation method, themineralizer zircon powder is subjected to high-temperature calcination, so that doped oxide impurities are effectively reduced, and the state of the powder is more stable; the mineralizer zircon powder is calcined and then subjected to crushing and ball milling again through the wet ball mill, mineralizer powder matched with the granularity of the ceramic core base material is obtained, and the granularity of the mineralizer after ball milling can be well combined with the ceramic core base material; the crack phenomenon of the ceramic core after sintering is obviously improved, and meanwhile, the strength and the high-temperature creep resistance of the ceramic core are improved.
本发明公开了一种航空发动机用空心叶片陶瓷型芯矿化剂的制备方法，先将锆英粉高温煅烧4‑7h，冷却后机械破碎，在湿法球磨机中与圆锆球一起进行加水球磨，取出悬浮液静置沉淀后排出上层水，把沉淀的锆石粉置于烤箱内烘烤去除水分，搅拌均匀置于密闭容器保存，本发明将矿化剂粉料锆英粉经过了高温煅烧，有效降低参杂的氧化物杂质，让粉料的状态更加稳定；矿化剂锆英粉煅烧后经过湿法球磨机重新进行破碎球磨，获得与陶瓷型芯基体材料粒度相匹配的矿化剂粉料，球磨后矿化剂粒度能很好的和陶芯基体材料相互结合；明显的改善了陶瓷型芯烧结后裂纹现象，同时提高陶瓷型芯的强度和高温抗蠕变性能。
Preparation method of hollow blade ceramic core mineralizer for aero-engine
一种航空发动机用空心叶片陶瓷型芯矿化剂的制备方法
LI CHAO (author) / DU YINGLIU (author) / YE FENG (author) / FENG SHIGE (author)
2021-04-02
Patent
Electronic Resource
Chinese
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