Abstract

Injection molding is widely used in plastic product manufacturing process. The product quality and the cost-effectiveness highly depend on the cooling step in the molding process. Thanks to the development of additive manufacturing techniques, conformal cooling channel (CCC) becomes a promising alternative for channel design. In this paper, three CCCs with different profiles and the same aspect ratio are designed for cooling a plastic product in its manufacturing process. The thermal and mechanical performance is presented by ANSYS Workbench. The simulation results are validated by the experimental data. The cooling performance under different coolant flow rate and different inlet temperature are simulated and compared. The thermal results show that compared with conventional straight channel, the designed CCCs can shorten the cooling time ranging from 10% to 57.1% and the temperature distribution of the plastic product is uniform as well. The mechanical results show that the fatigue life and von Mises stress of the designed CCCs can meet the industrial operating requirement.

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