Verification of External Gas-Assisted Mold Temperature Control for Injection Molding Process

Abstract:

In this study, a hot gas is used for heating the cavity surface of a mold. Different stamp thickness were designed and insert into the cavity plate. The stamp surface temperature was heated to above the glass transition temperature of the common plastic material. The heating result show that cavity surface can be heated to 196 °C after 20 s. The highest temperature appears at the center stamp surface. The stamp thickness strongly affects the heating speed and heating uniformity. When the stamp thickness is 0.5 mm the fastest heating rate can be reached with the value of 8.3 ^oC/s. With the thicker stamp, the slower heating rate could be reached.

• Periodical: Applied Mechanics and Materials (Volumes 752-753)
• Pages: 949-954
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.752-753.949
• Online since: April 2015
• Authors: Pham Son Minh*, Do Thanh Trung
• Keywords: Dynamic Mold Temperature Control, Injection Molding, Mold Heating

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