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用精密铸造方法生产空心涡轮叶片,特别是复杂型腔的空心叶片,陶瓷型芯的制造是一个十分重要的环节。我们采用以石英玻璃为基础的热压注法成型工艺制造高压导向叶片的陶瓷型芯,利用正交设计方法进行试验,以求找到较合适的材料配比和工艺方法,使型芯具有足够的常温和高温性能,较低的线收缩率及最小的裂纹倾向。通过试验,取得了以下方案配比: 型芯成份石英玻璃粉 75％熟料 15％铝矾土陶泥 8％氧化钛 2％石英玻璃粉粒度 40小时球磨
The production of hollow turbine blades by precision casting, especially in hollow cavities with complex cavities, is a very important step in the manufacture of ceramic cores. We use the quartz glass-based hot-pressure injection molding process of manufacturing high-pressure guide vane ceramic core, the use of orthogonal design of the test, in order to find a more suitable material ratio and process methods, the core has enough Normal temperature and high temperature performance, low line shrinkage and minimum crack tendency. Through the experiment, the following programs have been made: Core Composition Quartz Glass 75% Clinker 15% Bauxite 8% Titanium Dioxide 2% Quartz Glass Size 40 hours Ball Mill