Abstract
Fused deposition modeling (FDM), which is the most popular additive manufacturing technology, is widely used in numerous fields of economy and society such as aerospace, automobile, mechanical and biomedical engineering, education and sports. As the turbo-expander wheel is one of the major components of a large oxygen plant and has the enclosed structure with 20 streamline blade grooves, they are made with plaster casting process. As its efficiency is seriously affected by the profile of blade grooves, it is important to design the optimal profile and make plaster core precisely for the enhancement of the quality of products. In this paper, we designed the optimal profile by using the fluid analysis simulation tool and showed how the mold for making the plaster core mold according to this profile could be manufactured by using FDM equipment and so product manufacture period reduced and it resulted in the cost saving.
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