Browse > Article

A study on the manufacturing of metal/plastic multi-components using the DSI molding  

Ha, Seok-Jae (Harang AMI Co. Ltd. R&D center)
Cha, Baeg-Soon (Shape Manufacturing R&D Department, Korea Institute of Industrial Technology)
Ko, Young-Bae (Shape Manufacturing R&D Department, Korea Institute of Industrial Technology)
Publication Information
Design & Manufacturing / v.14, no.4, 2020 , pp. 71-77 More about this Journal
Abstract
Various manufacturing technologies, including over-molding and insert-injection molding, are used to produce hybrid plastics and metals. However, there are disadvantages to these technologies, as they require several steps in manufacturing and are limited to what can be reasonably achieved within the complexities of part geometry. This study aims to determine a practical approach for producing metal/plastic hybrid components by combining plastic injection molding and metal die casting to create a new hybrid metal/plastic molding process. The integrated metal/plastic hybrid injection molding process developed in this study uses the proven method of multi-component technology as a basis to combine plastic injection molding with metal die casting into one integrated process. In this study, the electrical conductivity and ampacity were verified to qualify the new process for the production of parts used in electronic devices. The electrical conductivity was measured, contacting both sides of the test sample with constant pressure, and the resistivity was measured using a micro ohmmeter. Also, the specific conductivity was subsequently calculated from the resistivity and contact surface of the conductor path. The ampacity defines the maximum amount of current a conductive path can carry before sustaining immediate or progressive deterioration. The manufactured hybrid multi-components were loaded with increasing currents, while the temperature was recorded with an infrared camera. To compare the measured infrared images, an electro-thermal simulation was conducted using commercial CAE software to predict the maximum temperature of the power loaded parts. Overall, during the injection molding process, it was demonstrated that multifunctional parts can be produced for electric and electronic applications.
Keywords
Metal/Plastic Hybrid Components; DSI(die slide injection) mold; Low-Melting Alloy; Electrical Conductivity; Ampacity;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Leo Hoffmann, Birgit Faist, Kim Kose, Fred Eggers, hite, Laser-Supported Production. 10(1) pp. 44-49, 2017.
2 Hanna Paul, Michael Luke, Frank Henning, J. Plastics Technology. 10(4) pp. 118-141, 2014.
3 Christian Hopmann, Julian Schild, Simon Wurzbacher, A. Erman Tekkaya and Sigrid Hess, "Combination technology of deep drawing and back-moulding for plastic/metal hybrid components", J Polym Eng 2017.
4 Fuminobu Kimura, Shotaro Kadoya, and Yusuke Kajihara, "Effects of molding conditions on injection molded direct joining under various surface fine-structuring", The international Journal of Advanced Manufacturing Technology, 101, pp. 2703-2712, 2019.   DOI
5 R. Boros, P. Kannan Rajamani, J. G. Kovacs, "Combination of 3D printing and injection molding: Overmolding and overprinting", eXPRESS Polymer Letters, Vol. 13, No. 10, pp. 889-897, 2019.   DOI
6 Pan Zhang, Jing Chen, Xiumin Chen, Cha Li, Youbing Li, Chaolong Yang, and Tian Xia, "Study on integrally molded PA6/304 stainless steel by micro-nano pressing technology", Journal of Adhesion Science and Technology.
7 Walter Michaeli, Christian Hopmann, Jan Fragner, and Tobias Pfefferkorn, "Injection molding of conductor paths: integration of functionality by the use of a metal/thermoplastic hybrid material", J. Polym. Eng., 31, pp. 479-487, 2011.
8 Christian Hopmann, Kirsten Bobzin, Roman Schoeldgen, Mehmet Oete, Johannes Wunderle, Thomas F. Linke and Philipp Ochotta, "IMKS and IMMS: two methods for the production of plastic parts featuring metallic areas", J. Polym. Eng, 2015.