Abstract:The investment technologies of preparing wax moulds, mould shells and technology of centrifugal casting for titanium alloys were studied. Low priced refractory and binder materials were used in the process of preparing shell moulds, the parameters of preparing wax moulds, mould shells were optimized, and the titanium components were cast successfully using low priced shell mould materials by the centrifugal technology, in which the preheat temperature of the mould was 300℃ and the centrifugal speed was 280r/min. The surface and inside qualities of castings were tested. The results show that the diffusing thickness of aluminum is 60μm, and that of silicon is 20μm.

Key words: titanium alloys; centrifugal casting; investment casting; oxide ceramic shells