IGTC-69 Development of the CGT301 Ceramic Turbine Blade Using Taguchi Methods(Session C-5 EVALUATION OF CERAMIC COMPONENTS II)

概要

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Research and development of the 300kW-class recuperative industrial ceramic gas turbine (CGT), a program in the New Sunshine Project, is being conducted by the New Energy and Industrial Technology Development Organization (NEDO). Along with this program, NGK INSULATORS, LTD., (NGK) has made technical efforts in cooperation with Ishikawajima-Harima Heavy Industries Co., Ltd. (IHI) since 1988. To improve dimensional accuracy of the silicon nitride turbine blade (for ceramic gas turbine), the injection molding process was studied using Taguchi methods. It was found that dimensional accuracy can be improved by optimizing the injection molding conditions. Further, to find effect of the dimensional accuracy on performance of the ceramic turbine blades, cold-spin tests were conducted using the ceramic turbine blades prepared according to injection molding conditions. It was verified that the ceramic turbine blades with high dimensional accuracy showed a higher burst speed. Those factors contributing to high dimensional accuracy of the ceramic turbine blades in injection molding also contribute to higher burst speed.
公益社団法人日本ガスタービン学会の論文