Analisis Pengaruh Waktu Injeksi dan Temperatur Cetakan Proses Metal Injection Molding Terhadap Densitas Kekerasan Mikrostruktur Pada Komposit FeNi

Aini, Daffa Marshandi (2025) Analisis Pengaruh Waktu Injeksi dan Temperatur Cetakan Proses Metal Injection Molding Terhadap Densitas Kekerasan Mikrostruktur Pada Komposit FeNi. Other thesis, Institut Teknologi Sepuluh Nopember Surabaya.

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Abstract

Proyektil frangible adalah jenis amunisi yang dirancang untuk pecah menjadi fragmen kecil saat terkena target keras, mengurangi risiko ricochet dan over-penetration. Penelitian ini bertujuan untuk menyelidiki pengaruh variasi waktu dan temperatur cetakan dalam proses injection molding terhadap kekerasan, mikrostruktur, dan frangibility dari komposit feronikel (Fe-Ni). Komposit feronikel merupakan material yang banyak digunakan dalam berbagai aplikasi industri karena kombinasi sifat mekanik dan ketahanan korosinya. Dalam penelitian ini, feedstock FeNi yang digunakan sudah tersedia dalam bentuk pelet yang nantinya akan diinjeksikan ke dalam mesin MIM dan dilakukan variasi waktu injeksi 5,10,15 detik dan temperature cetakan 30,40, dan 50°C. Sampel yang dihasilkan kemudian mengalami proses debinding pada 600°C dan sintering pada temperatur 1050 °C
selama 1 jam. Variasi waktu injeksi dan temperatur cetakan diatur untuk memahami pengaruhnya terhadap sifat akhir material. Adapun beberapa pengujian yang dilakukan pada penelitian ini ialah uji densitas, uji kekerasan, uji kekuatan tekan, FTIR, SEM, TGA, dan XRD. Berdasarkan pengujian densitas didapat nilai densitas terendah pada waktu injeksi 5 detik dan temperatur cetakan 30 sebesar 5.1 g/cm3 dan nilai densitas tertinggi pada variasi waktu injeksi 15 detik dan temperatur cetakan 50°C yaitu sebesar 7.89 g/cm3. Berdasarkan pengujian kekerasan didapat nilai kekerasan terendah pada waktu injeksi 5 detik dan temperatur cetakan 30 sebesar 104.8 HV dan nilai kekerasan tertinggi pada variasi waktu injeksi 15 detik dan °C yaitu temperatur cetakan 50 °C yaitu sebesar 127.6 HV.
Berdasarkan pengujian tekan didapat nilai kekuatan tekan terendah pada waktu injeksi 5 detik dan temperatur cetakan 30 sebesar 223.6 MPa dan nilai kekuatan tekan tertinggi pada variasi waktu injeksi 15 detik dan °C yaitu temperatur cetakan 50°C yaitu sebesar 312.5 MPa. Hasil FTIR menunjukkan kesesuaian pada gugus fungsi yang dimiliki oleh poliamida 6. Pada pengujian XRD terlihat fasa yang terbentuk adalah Fe dan Fe3C.
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A frangible bullet is a type of ammunition designed to break into small fragments when hit by a hard target, reducing the risk of ricochet and over-penetration. This study aims to investigate the effect of mold time and temperature variations in the injection molding process on the hardness, microstructure, and flammability of ferronickel composites (Fe-Ni). Ferronickel composites are widely used in a variety of industrial applications due to their combination of mechanical properties and corrosion resistance. In this study, the FeNi feedstock used is available in the form of pellets which will later be injected into the MIM machine and variations in injection time of 5, 10, 15 seconds and mold temperature of 30, 40, and 50 °C. The resulting sample then underwent a debinding process at 600 °C and sintering at a temperature of 1050 °C for 1 hour. Variations in injection time and mold temperature are set to understand their effect on the final properties of the material. Some of the tests carried out in this study are density test, hardness test, compressive strength test, FTIR, SEM, TGA, and XRD. Based on the density test, the lowest density value was obtained at 5 seconds injection time and mold temperature of 30 °C, which was 5.1 g/cm3 and the highest density value at the variation of injection time of 15 seconds and mold temperature of 50 °C, which was 7.89 g/cm3. Based on the hardness test, the lowest hardness value was obtained at 5 seconds injection time and 30 °C mold temperature which was 104.8 HV and the highest hardness value at 15 seconds injection time variation and mold temperature 50 °C was 127.6 HV. Based on the compression test, the lowest compressive strength value was obtained at the injection time of 5 seconds and the mold temperature of 30 °C, which was 223.6 MPa and the highest compressive strength value at the variation of injection time of 15 seconds and mold temperature of 50 °C, which is 312.5 MPa. The FTIR results show that the conformity with the functional group possessed by polyamide 6. In the XRD test, it can be seen that the phase formed is Fe and Fe3C.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Injection Molding, Feronikel, Kekerasan, Injection Molding, Feronickel, Hardness
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA418.9 Composite materials. Laminated materials.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Daffa Marshandi Aini
Date Deposited:	30 Jan 2025 07:44
Last Modified:	30 Jan 2025 07:44
URI:	http://repository.its.ac.id/id/eprint/116916

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