Evaluation Study of Induction Heat Technology Used in Mold Temperature Variation Control during Mold Compression Process

• Main Authors: Yu-Tseng Lin, 林育增
• Other Authors: Shia-Chung Chen
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/98rk3m

博士 === 中原大學 === 機械工程研究所 === 103 === In recent years, polymer composites has been grasped great attention in 3C and Automotive industries due to its advantages of relatively easy molding, high strength to weight ratio and being shaped to products of complicated geometry. Although polymer composites has a lot of advantages, there are still several bottle necks such as long cycle time, unable to provide a stable temperature duration for curing during compression molding waiting to be solved and improved. The composite induction heating technology which combines mold exterior and mold base induction heating was used to achieve dynamic mold temperature with constant temperature duration required for molding so that the current bottle necks can be solved, simulation software ANSYS® was also used for the verification with experiments. The results shows that the mold exterior induction heating time 17sec combined with mold base induction heating 20 sec with 3sec intermittence heating can achieved mold temperature 135oC and with duration time 28 sec, which were proved to have batter heating rate and longer/stable duration time. Furthermore, when the heating time increased form 20sec to 28 sec, the temperature can be raised by 24.4% and the duration time increased 3 sec, when the initial mold temperature was raised from 40oC to 80oC, the temperature can be raised by 20.9% and the duration time increased 5 sec. The results were also verified by ANSYS®. On the other hand, in the cycle time comparison between composite induction heating technology and heater heating we can found that the cycle time was reduced from 788 sec to 103sec at the same target temperature. In the experiment and analysis, the success of the internal and external induction heating with timing control on the template test, and already prove its feasibility, the success of the establishment of an internal and external 3D magnetic induction heating - thermal coupling simulation analysis techniques.