材料期刊网

大型复杂薄壁钛合金精密铸造技术是当今世界军用与民用航空领域的尖端技术。介绍了熔模精密铸造技术的工艺流程、技术特点以及国内外研究现状。结合国际最流行的计算机数值模拟以及3D打印等新型技术，指出我国该项技术的研究趋势与发展方向是：①加强熔模铸造工艺的理论研究；②深化钛合金设计研究，探索性能更高的适合于大型复杂薄壁件铸造成形的钛合金；③深入研究纯净化技术，以及夹杂和铸造缺陷与性能之间的定量关系；④建立型壳模型库；⑤研发机器自动涂浸浆料与撒砂工艺；⑥加强全过程的质量管理与控制；⑦高度关注3D打印技术在钛合金制造领域的发展及其在钛合金熔模铸造领域的应用。

Large complex thin-walled titanium alloy precision casting is the most advanced technologies in the world of military and civil aviation field.This paper introduces its process flow, technical features and the domestic and international research frontier achievements. Combined with the most popular international computer numerical simulation and 3D print and other new technology, summarizes the research trend and development direction of this technology in China: theory research strengthen of the investment casting process, research of titanium alloy design and exploration of large thin wall complex higher performance of casting titanium alloy, construction of model library, development of automatic coating machine slurry and sanding process, better quality management and control of the whole process, more emphasis on application of 3D printing technology in the fields of the manufacture and investment casting process of titanium alloy.