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All Journal Jurnal Rekayasa Hijau Jurnal Rekayasa Energi dan Mekanika METAL : Jurnal Sistem Mekanik dan Termal
Latief, Alfan Ekajati
Institut Teknologi Nasional Bandung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Journal : METAL : Jurnal Sistem Mekanik dan Termal

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Proses Pembuatan Mesin Injection Molding Hand-Press untuk Plastik Komposit Alfan Ekajati Latief; Nuha Desi Anggraeni; Wildhan Rhamdani
METAL: Jurnal Sistem Mekanik dan Termal Vol 4, No 2 (2020): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1217.259 KB) | DOI: 10.25077/metal.4.2.94-98.2020

Abstract

Injection molding is a method of forming thermoplastic material that is melted due to heating. The heating result is then injected by the nozzle into the mold until the thermoplastic material hardens. Plastic processing using injection molding is used to produce strong thermoplastic material quickly. The manufacture of injection molding machine hand-press is expected to help the process of plastic processing that demands material engineering and manufacturing technology. Research in the process of making injection molding machine hand-press aims to determine the manufacturing process time and temperature when the operation of injection molding hand-press. The process of making injection molding hand-press shows that the required time is 612 minutes, while in theory the time is 565.3 minutes. The operating temperature is (230-260) °C, with an optimum temperature of 250 °C.
Perancangan Cetakan Injection Molding Hand Press Untuk Produk Slide Piece CVT Menggunakan FEM Alfan Ekajati Latief; Lutfi Darusman; Wibowo Pria Fahla; Ahmad Dzilfairuz Zaidan; Nuha Desi Anggraeni
METAL: Jurnal Sistem Mekanik dan Termal Vol 5, No 2 (2021): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1292.985 KB) | DOI: 10.25077/metal.5.2.105-113.2021

Abstract

The development of composite materials in the automotive industry has reached the stage of utilizing natural fibers to pursue relatively low material prices with the same quality. One method for product formation is injection molding. This study aims to design the most efficient mold from a variety of shapes, dimensions, and runner types used with the help of SolidWorks software. The tool used to support the design of the mold is a low-pressure injection molding hand press with a barrel temperature specification of 200 C - 250 C, barrel volume of 270 cm3, and an out-of-nozzle diameter of 8 mm. The most efficient design is determined from three multi-cavity models with different shapes. This research produces a two-plate mold with multi-cavity modeling which has a low-pressure parameter of 1.89 MPa and the shrinkage factor is still within the standard range of PPHI material (< 1%).
Manufacture of Composite Plastic Pellet Seed Machine Capacity 2.5 Kg/Hour Alfan Ekajati Latief; Cahyadi Suheri
METAL: Jurnal Sistem Mekanik dan Termal Vol 7, No 1 (2023): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.7.1.34-39.2023

Abstract

Natural fibers are a material that is easily obtained from nature, both animals and plants. Using natural fibers has been commercially applied in various fields, such as automotive and construction, by mixing PPHI (Polypropylene High Impact) with injection molding and forming plastic pellets. Pellets are extruded with natural pineapple fiber for composite, which requires a composite pellet-making machine, which combines two materials that are not aligned with the material mixing method using a screw inside the barrel, then heated by a heater. The screw pushes the pellets that have been mixed and melted to the die and then dried with water, which will go to the Crusher to be chopped into composite pellet seeds. In this research, a plastic extruder machine with a capacity of 2.5 Kg/hour components used a single screw, heater, die, Crusher, barrel, and hopper, and the time delay in this study is 165º and 180º. The screw rotation is constant at 15 rpm, using a screw diameter of 20 mm x 550 mm and a pitch distance of 1D with an inclination angle of 23º.
Co-Authors Ahmad Dzilfairuz Zaidan Ahmad Dzilfairuz Zaidan Alvin Rhamdani Anggraeni, Nuha Desi Cahyadi Suheri Jaka Rahmadi Kurnia Hendriawan Lutfi Darusman M. Diaz Fajar Ismail Muhammad Azis Mahardhika Muhammad Khaidar Rachman Naufal Raihan M Nuha Desi Anggraeni Pikri Ilham Jauhari Rakean Wide Windujati Robby Rinaldi Sandi Satria Budhi Dharma Syahril Sayuti Tri Sigit Purwanto Wibowo Pria Fahla Wildhan Rhamdani