摘要
高质量的陶瓷铸型是精密铸造中获得燃气轮机涡轮叶片的基础,而传统的陶瓷铸型制备工艺存在型芯型壳组合的装配误差和无法制造叶片内部细小冲击孔的缺点。因此,提出了一种基于光固化原型的燃气轮机涡轮叶片整体式陶瓷铸型制备工艺。首先,在分析新工艺对光固化树脂原型功能要求的基础上,确定其结构组成;其次,利用ProCAST软件模拟了燃气轮机涡轮叶片浇注过程,避免了缩松缩孔缺陷的产生,完成了光固化树脂原型的详细设计;最后,制备出了整体式陶瓷铸型,并快速铸造出燃气轮机涡轮叶片。
High-quality ceramic molds are basis of getting gas turbine blades by investment cast- ing. Traditional process has to confront the errors which brought by combination of ceramic cores and ceramic shells, and it is unable for traditional process to manufacture hollow blades with small impacting holes. A new fabrication process of gas turbine blades integral ceramic molds based on stereo- lithography was proved. First, analyzing the function demand from new process, the structural com- position of SL prototype was determined ; then, SL prototype are designed in detail, pouring process of gas turbine blade and defect of shrinkage cavity and porosity was simulated using ProCAST software. Finally, the integral ceramic casting mold was obtained, and a gas turbine blade was rapidly cast by the proposed process.
出处
《电加工与模具》
2011年第4期64-69,共6页
Electromachining & Mould
基金
国家重点基础研究发展计划(973计划资助项目)(2007-CB707704)
中国博士后科学基金资助项目(20100471615)
关键词
光固化原型
燃气轮机涡轮叶片
整体式陶瓷铸型
设计
制备
stereolithography prototyping
gas turbine blades
integral ceramic molds
design
lab rication
