Analisis Simulasi Perpindahan Panas Pada Proses Injection Molding Menggunakan Autodesk Moldflow

Widodo, Joko Sri (2025) Analisis Simulasi Perpindahan Panas Pada Proses Injection Molding Menggunakan Autodesk Moldflow. Sarjana (S1) thesis, Universitas Islam 45.

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Abstract

The advancement of manufacturing technology has driven the use of injection molding as a primary method for mass-producing high-precision plastic components. One of the main challenges in this process is the control of temperature parameters, which greatly affects product quality and production efficiency. With technological progress, Computer-Aided Engineering (CAE) approaches such as Autodesk Moldflow are widely used to simulate the injection molding process virtually before actual production. This study aims to determine the most optimal process parameters for a buckle product made of Polypropylene (PP), and to analyze the rate of internal heat transfer by conduction before the cooling stage occurs. The research method includes observations of Autodesk Moldflow simulation results with fill time and quality prediction indicators, as well as literature studies related to the calculation of heat transfer rates using Fourier's law. Simulations were conducted by varying the melt temperature (200°C, 215°C, and 230°C) and mold temperature (40°C, 45°C, 50°C, 55°C, and 60°C). The results show that the combination of 230°C melt temperature and 40°C mold temperature produced the best performance, indicated by the highest combined score of 99.09%, with a fill time of 0.4284 seconds and a quality prediction of 91.5%. The heat transfer rate was calculated based on product geometry data and the temperature at flow front simulation results, yielding a constant value of 0.1568 W across all mold temperature variations. This indicates that mold temperature does not significantly affect internal heat transfer during the filling stage. This research contributes to optimizing process temperature parameters in injection molding to improve production efficiency and product quality.

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