Ihsanudin, Muhamad Nur and , Patna Partono, S.T., M.T. (2024) Pengaruh Variasi Luas Penampang In-Gate Pada Pengecoran Logam Alumunium Terhadap Penyusutan, Density, Kekerasan dan Struktur Mikro Dengan Metode Investment Casting. Skripsi thesis, Universitas Muhammadiyah Surakarta.
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Abstract
Casting is a manufacturing process used to make objects or components by pouring liquid material (usually metal) into a mold that has been formed, then the metal that will be used is aluminum. Aluminum is a lightweight metal that has good corrosion resistance and good electrical conductivity and other good properties as metal properties. Investment casting has advantages such as high precision and can make products with a high level of accuracy, however, casting defects can occur, one of which is due to the inlet channel. The inlet channel (In gate) is a channel that connects the down channel with the mold cavity. The purpose of this study was to determine the effect of variations in cross-sectional area on chemical composition, shrinkage, deviation, density, microstructure and hardness. The research method that will be used is investment casting with variations in cross-sectional area of 100 mm2, 150 mm2, 200 mm2 and conducting tests on chemical composition, shrinkage, deviation, density, microstructure, and hardness. The results of the chemical composition analysis, the samples studied were dominated by the element Aluminum (Al) 97.18. The presence of alloying elements such as silicon (Si) 0.735%, iron (Fe) 0.755%, copper (Cu) 0.287% and magnesium (Mg) 0.777% in small amounts indicates that this sample is an aluminum alloy. The highest average shrinkage results were found in the in gate cross-sectional area of 100 mm2 of 3.61%, followed by the in gate cross-sectional area of 150 mm2 of 2.81%, and the lowest in the in gate cross-sectional area of 200 mm2 of 1.82%. Density testing produced the highest density data, namely 3.53 g / m3 with an in gate cross-sectional area of 150 mm2 and in the microstructure test, the in gate cross-sectional area of 150 mm2 had even grains compared to the in gate cross-sectional areas of 100 mm2 and 200 mm2 so that the in gate cross-sectional area of 150 mm2 produced the highest hardness value with 84.4 VHN followed by the in gate cross-sectional area of 100 mm2 and 200 mm2 with 76,1 VHN and 76.5 VHN.
| Item Type: | Thesis (Skripsi) |
|---|---|
| Uncontrolled Keywords: | Investment Casting, Aluminum, Inlet (In gate), Shrinkage, Density, Microstructure, Hardness |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | MUHAMAD NUR IHSANUDIN |
| Date Deposited: | 19 Nov 2024 08:21 |
| Last Modified: | 19 Nov 2024 08:21 |
| URI: | http://eprints.ums.ac.id/id/eprint/129019 |
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