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Leksonowati, Nur Fitria
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Mechanical Engineering

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Experimental Study : Thermal Variations and Pressure's Impact on Plastic Injection Molding Quality Leksonowati, Nur Fitria; Pamungkas, Nurman; Manurung, Meilani Mandalena
ROTASI Vol 26, No 3 (2024): VOLUME 26, NOMOR 3, JULI 2024
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.26.3.50-56

Abstract

This study investigates the effects of varying hot water temperatures (75℃, 85℃, and 95℃) and injection pressures (328 Bar and 928 Bar) on the outcomes of experimental tests in injection molding. Results indicate that at 75℃, 85℃, and 95℃ with an injection pressure of 328 Bar, the product displayed a Short Mold defect despite a slight increase in mass. At 75℃ with an increased injection pressure of 928 Bar, a White Line defect was observed, while at 85℃ and 928 Bar, a defect-free part was produced with optimal mass. However, at 95℃, a Bright Color defect was evident, leading to part rejection despite a slight mass increase. The findings highlight the significance of meticulous parameter selection, with an optimal combination identified as 85℃ hot water temperature and 928 Bar injection pressure for defect-free production in injection molding processes. 
Co-Authors Manurung, Meilani Mandalena Pamungkas, Nurman