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Numerical and experimental investigations of a conformally cooled maraging steel injection molding tool fabricated by direct metal printing

  • Chil-Chyuan KuoEmail author
  • Zi-Fan Jiang
ORIGINAL ARTICLE

Abstract

Costs and time are correlated greatly in the precision mold industries. To improve the productivity in series production, significant reduction in the cooling time is required. The profiled conformal cooling channel (PCCC) is a unique approach to reduce cooling time in the injection molding process compared with a conventional straight drilled cooling channel. In this study, a maraging steel injection molding tool with PCCC was manufactured by direct metal printing. Cooling performances of the injection molding tool with different methods were investigated via low-pressure wax injection molding. The part cooling time, part temperature difference, mold surface temperature difference, and product total deformation were modeled numerically using Moldex3D simulation software. It was found that the product cooling time for the injection molding tool with PCCC was reduced greatly. The product cooling time for the injection molding tool with PCCC, with gas cooling, and without cooling channels are 27 s, 94 s, and 543 s, respectively. The molding cycle time for the injection molding tool with PCCC about 93% can be saved compared with the injection molding tool without cooling channels. The molding cycle time of the injection molding tool with PCCC about 63.2% can be saved compared with the injection molding tool with gas cooling.

Keywords

Cooling time Injection molding tool Conformal cooling channel Cooling time Molding cycle time 

Notes

Acknowledgments

The skillful technical assistance in mold making by Ding-Yang Xu and Xin-Yi Yang of Ming Chi University of Technology is highly appreciated.

Funding information

This study was financially supported by the Ministry of Science and Technology of Taiwan under contracts nos. MOST 107-2221-E-131-018, MOST 106-2221-E-131-010, MOST 106-2221-E-131-011, and MOST 105-2221-E-131-012.

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringMing Chi University of TechnologyNew Taipei CityTaiwan
  2. 2.Research Center for Intelligent Medical DevicesMing Chi University of TechnologyNew Taipei CityTaiwan

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